diff --git a/.github/releases/v0.3.0.md b/.github/releases/v0.3.0.md
new file mode 100644
index 0000000..f83d2a9
--- /dev/null
+++ b/.github/releases/v0.3.0.md
@@ -0,0 +1,46 @@
+0.3.0 keeps the Device panel usable while a device starts. The platform buttons, device picker, and refresh stay available during discovery and boot. If a device is already attached, you can still use its screen and revoke agent access while another starts. Choosing another target cancels the pending attachment; a failed switch keeps the previous device.
+
+In 0.2.0, Android could show a blank panel without an error. The hub announced that its HTTP listener was ready before it started capture. Its default capture path then tried to launch ffmpeg, which could fail with `spawn ffmpeg ENOENT`. The viewer treated the closed video connection as a pause and showed no error. Android now explicitly uses scrcpy and the device's H.264 encoder, so it no longer needs ffmpeg on the desktop PATH. Startup checks capture readiness, and connection, decoder, and drawing failures appear in the panel. A missing first frame, including after a video reset, fails after 15 seconds instead of waiting indefinitely.
+
+Switching also used to wait for the old attachment to finish its work and close its helpers before showing the new device. Now the new attachment becomes active when it is ready, and the old one cleans up in the background. Already-dispatched work stays bound to the old device; queued input is rejected rather than replayed on the new one. Ownership stays reserved until cleanup completes, so another session cannot take a device that is still being released.
+
+The video path does less work per frame. H.264 packets now share one inspection for the keyframe marker and codec instead of separate scans. A keyframe that begins with an SPS stops inspection at its header. MJPEG parsing returns byte views instead of copying every JPEG, and the viewer decodes only the newest complete frame in each received chunk. If a chunk contains several frames, the older ones no longer cost a bitmap decode and canvas draw.
+
+A local macOS capture-only check against already-running Android emulators and iOS Simulators produced first frames in about 0.8 to 1.9 seconds. This excludes boot, helper downloads, and automation-session setup. It is not a before-and-after benchmark of full device switching, and stopped devices still need time to boot.
+
+## Changed
+
+- **Panel:** Android and iOS have separate platform and device pickers. Each session owns its attachment; tabs and windows showing the same session share that device and its access setting. Android and iOS can run side by side in separate sessions.
+- **Startup:** Device selections use cancellation and latest-selection-wins handling. New targets do not wait for cancelled boots on different devices. A return to the same target waits for the old startup or cleanup to release ownership.
+- **Discovery:** Android resolves running AVD names in batches of four instead of one at a time. Cancelled refreshes stop their native commands rather than leaving discovery processes running.
+- **Video:** Reduce H.264 scans and MJPEG copies, skip outdated frames, and keep the current screen visible while the next device prepares. No extra warm capture processes are kept solely to make switching appear instant.
+- **Process output:** Retain up to 4 MiB per command output stream as byte chunks and decode once at completion. This avoids repeatedly copying large strings and preserves UTF-8 across chunk boundaries.
+
+## Fixed
+
+- **Android:** Fix the silent blank screen when ffmpeg is unavailable by selecting scrcpy explicitly and checking the capture session before reporting startup success.
+- **Viewer:** Report unexpected connection closure, unsupported codecs, decoder setup errors, and unavailable canvases. Refresh can retry a failed viewer without changing the attachment.
+- **Cancellation:** Terminate cancelled command processes and interrupt boot-status and screen-readiness waits. Rollback shuts down only devices started by that operation, never a pre-existing emulator or simulator.
+- **Pipes and streams:** Drain unused helper stdout and stderr so full pipes cannot stall a child. Cancel MJPEG readers and upstream fetches on failure or closure, and release their tracking entries.
+- **Input:** Keep manual tap and swipe tied to the current rendered frame and native stream capability, rather than depending on the automation engine's capability report.
+- **Privacy:** Create private session directories, remove screenshot files on failure as well as success, reject oversized screenshots before reading them, and avoid an extra full-size copy of screenshot bytes.
+- **Handles:** Use one identity check for token, generation, platform, and device ID across the controller, registry, runtime, and server. Forged metadata cannot release a valid attachment.
+- **Stream proxy:** Redact hub credentials from forwarded text, cap upstream WebSocket messages, and reject redirects from the fixed video route.
+- **Development:** Replace the recursive TypeScript shim that exited successfully without checking code with the real pinned TypeScript 6.0.2 compiler. Consolidate overlapping tests while retaining cancellation, ownership, and resource-lifecycle coverage.
+
+## Update
+
+Update the plugin pin in your global OpenCode configuration, preserving your other settings:
+
+```json
+{
+  "$schema": "https://opencode.ai/config.json",
+  "plugins": ["github:viralcodex/opencode-demul#v0.3.0"]
+}
+```
+
+The published plugin exports and tool names are unchanged. Android still needs SDK Platform-Tools, Emulator, and a configured AVD. iOS still needs Xcode and an iOS Simulator runtime on macOS. Both need a supported Node installation with npm; ffmpeg is no longer required for Android video.
+
+Validation includes lint, formatting, the real typecheck, 192 passing tests, bundle generation, and installed-package verification.
+
+Full changelog: https://github.com/viralcodex/opencode-demul/compare/v0.2.0...v0.3.0
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index ff333ba..5476296 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -47,6 +47,7 @@ jobs:
           assert.match(version, /^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-[0-9A-Za-z.-]+)?$/);
           const manifest = JSON.parse(readFileSync('package.json', 'utf8'));
           assert.equal(version, manifest.version, 'Commit the package version before releasing.');
+          assert.ok(readFileSync(`.github/releases/v${version}.md`, 'utf8').trim(), 'Commit nonempty release notes before releasing.');
           appendFileSync(process.env.GITHUB_OUTPUT, `tag=v${version}\n`);
           NODE
       - uses: actions/github-script@v7
@@ -80,6 +81,10 @@ jobs:
       actions: read
       contents: write
     steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.sha }}
+          persist-credentials: false
       - uses: actions/download-artifact@v4
         with:
           name: release-package
@@ -92,7 +97,7 @@ jobs:
           RELEASE_COMMIT: ${{ github.sha }}
           PRERELEASE: ${{ inputs.prerelease }}
         run: |
-          args=(--target "$RELEASE_COMMIT" --title "$RELEASE_TAG" --generate-notes)
+          args=(--target "$RELEASE_COMMIT" --title "$RELEASE_TAG" --notes-file ".github/releases/$RELEASE_TAG.md")
           if [ "$PRERELEASE" = true ]; then
             args+=(--prerelease)
           fi
diff --git a/README.md b/README.md
index e8a2662..e66a96d 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,6 @@ simulators on macOS.
 - OpenCode Desktop compatible with plugin SDK 2.2.2, using a local server.
 - Node 22.19+ on the 22.x line, or Node 24+, with npm.
 - Android SDK Platform-Tools and Emulator, a configured Android Virtual Device, and hardware virtualization enabled.
-- ffmpeg with libx264 on the desktop process's PATH.
 - For iOS (macOS only): Xcode with an iOS Simulator runtime, selected with `xcode-select`.
 
 Set `ANDROID_HOME` or `ANDROID_SDK_ROOT` if your SDK is outside the standard Android Studio location.
@@ -28,9 +27,9 @@ Add this entry to your OpenCode configuration.
 }
 ```
 
-Restart OpenCode Desktop, then open **Add tab > Device** in a session.
+Open **Add tab > Device** in a session.
 First use downloads the pinned device helpers from npm.
-Android SDK tools, Node and ffmpeg must already be installed.
+Android SDK tools and Node must already be installed. Android video uses the device's H.264 encoder through scrcpy.
 
 ## Use
 
@@ -39,10 +38,13 @@ and starts it if needed. Use the platform and device pickers to switch between A
 emulators and iOS simulators, and refresh to rescan. Either platform's toolchain may be
 missing; the picker lists what the host can run.
 
+Discovery and startup run in the background. The controls remain available while a device
+boots; selecting another device cancels the pending attachment.
+
 Each session controls its own device. Run iOS and Android side by side in separate sessions;
 a device already controlled by another session cannot be attached. Tabs and windows showing
 the same session share its device and agent-access setting. Closing a viewer stops its video
-without detaching the device, so agents can keep working. Detach the device in the panel to
+without detaching the device, so agents can keep working. Use `device.close` to
 release it; deleting or moving the session also releases it. A failed device switch keeps the
 previous attachment.
 
@@ -58,6 +60,8 @@ The first iOS automation command builds the agent's XCTest runner, which can tak
 
 Prebuilt plugin files are included.
 
+[Release notes for v0.3.0](https://github.com/viralcodex/opencode-demul/releases/tag/v0.3.0).
+
 ## Development
 
 Use Bun 1.3.6 and a supported Node version to build and test it.
diff --git a/bun.lock b/bun.lock
index 0edb02a..91f0907 100644
--- a/bun.lock
+++ b/bun.lock
@@ -19,7 +19,7 @@
         "oxfmt": "0.75.0",
         "oxlint": "1.90.0",
         "solid-js": "1.9.17",
-        "typescript": "npm:@typescript/typescript6@6.0.2",
+        "typescript": "6.0.2",
         "vite": "7.3.7",
         "vite-plugin-solid": "2.11.10",
       },
@@ -460,8 +460,6 @@
 
     "@types/ws": ["@types/ws@8.18.2", "", { "dependencies": { "@types/node": "*" } }, "sha512-67MQl+fpWKVTT1NYdnmo3U4sc/xPo/zQBncVnI74qmQa0z/b+1g6iYqNmGCPbxO+zz2aklb08a0oHfegiVd0/w=="],
 
-    "@typescript/old": ["@typescript/typescript6@6.0.2", "", { "dependencies": { "@typescript/old": "npm:typescript@^6" }, "bin": { "tsc6": "bin/tsc6" } }, "sha512-mbCddXd+jm7hfx7w2YU64/Av4/NqqeG3GoRZgxPcgoTxYjhrcfJRw9ULch71SS4G+Q3bOXFhRvPqjguN0Hyp5w=="],
-
     "abbrev": ["abbrev@4.0.0", "", {}, "sha512-a1wflyaL0tHtJSmLSOVybYhy22vRih4eduhhrkcjgrWGnRfrZtovJ2FRjxuTtkkj47O/baf0R86QU5OuYpz8fA=="],
 
     "agent-base": ["agent-base@7.1.4", "", {}, "sha512-MnA+YT8fwfJPgBx3m60MNqakm30XOkyIoH1y6huTQvC0PwZG7ki8NacLBcrPbNoo8vEZy7Jpuk7+jMO+CUovTQ=="],
@@ -810,7 +808,7 @@
 
     "tuf-js": ["tuf-js@4.1.0", "", { "dependencies": { "@tufjs/models": "4.1.0", "debug": "^4.4.3", "make-fetch-happen": "^15.0.1" } }, "sha512-50QV99kCKH5P/Vs4E2Gzp7BopNV+KzTXqWeaxrfu5IQJBOULRsTIS9seSsOVT8ZnGXzCyx55nYWAi4qJzpZKEQ=="],
 
-    "typescript": ["@typescript/typescript6@6.0.2", "", { "dependencies": { "@typescript/old": "npm:typescript@^6" }, "bin": { "tsc6": "bin/tsc6" } }, "sha512-mbCddXd+jm7hfx7w2YU64/Av4/NqqeG3GoRZgxPcgoTxYjhrcfJRw9ULch71SS4G+Q3bOXFhRvPqjguN0Hyp5w=="],
+    "typescript": ["typescript@6.0.2", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-bGdAIrZ0wiGDo5l8c++HWtbaNCWTS4UTv7RaTH/ThVIgjkveJt83m74bBHMJkuCbslY8ixgLBVZJIOiQlQTjfQ=="],
 
     "undici": ["undici@7.30.1", "", {}, "sha512-03KrMbjIFDWQR5RNPrSw3bd1r12JpyFQl9/yxjUbJtqkjmllqC5lFjZh6ujeuJCKr8EOQvRW872Oy/az+nLYxg=="],
 
diff --git a/dist/gui.cjs b/dist/gui.cjs
index 3b10df1..ee878fd 100644
--- a/dist/gui.cjs
+++ b/dist/gui.cjs
@@ -1,24 +1,23 @@
-"use strict";Object.defineProperties(exports,{__esModule:{value:!0},[Symbol.toStringTag]:{value:"Module"}});const X=require("solid-js/web"),ie=require("solid-js"),yt=require("@opencode/plugin/gui"),bo=require("@opencode/schema/rpc"),u=require("effect"),_o=8*1024*1024,Fe=u.Schema.optional,_e=u.Schema.String.check(u.Schema.isMaxLength(2048)),zr=u.Schema.String.check(u.Schema.isMaxLength(1e5)),bt=u.Schema.Int.check(u.Schema.isGreaterThanOrEqualTo(0)),Vr=u.Schema.Int.check(u.Schema.isBetween({minimum:0,maximum:1e6})),We=u.Schema.Literals(["ios","android"]).annotate({identifier:"Device.Platform"}),ko=u.Schema.Literals(["shutdown","booting","booted","unavailable"]).annotate({identifier:"Device.DeviceState"}),xo=u.Schema.Literals(["available","owned-by-this-host","owned-by-other","unknown"]).annotate({identifier:"Device.Ownership"}),Gr=u.Schema.Literals(["apps","launch","install","snapshot","press","fill","swipe","key","screenshot","stream"]).annotate({identifier:"Device.Capability"}),Eo=u.Schema.Literals(["home","back","recents","lock","volumeUp","volumeDown"]).annotate({identifier:"Device.NavigationKey"}),kn=bt.annotate({identifier:"Device.Generation"}),xn=u.Schema.String.check(u.Schema.isPattern(/^dh_[a-f0-9-]{36}$/u)).pipe(u.Schema.brand("Device.HandleToken")).annotate({identifier:"Device.HandleToken"}),De=u.Schema.Struct({token:xn,platform:We,deviceId:_e,generation:kn}).annotate({identifier:"Device.DeviceHandle"}),Zr=u.Schema.String.check(u.Schema.isPattern(/^@?e[1-9][0-9]*$/u)).pipe(u.Schema.brand("Device.ElementRef")).annotate({identifier:"Device.ElementRef"}),qr=u.Schema.Struct({token:xn,generation:kn,revision:bt,ref:Zr}).annotate({identifier:"Device.SnapshotReference"}),Do=u.Schema.Struct({ref:Fe(Zr),role:_e,name:Fe(zr),value:Fe(zr),enabled:Fe(u.Schema.Boolean),focused:Fe(u.Schema.Boolean)}).annotate({identifier:"Device.AccessibilityNode"}),Lo=u.Schema.Struct({token:xn,generation:kn,revision:bt,interactiveOnly:u.Schema.Boolean,complete:u.Schema.Boolean,nodes:u.Schema.Array(Do)}).annotate({identifier:"Device.Snapshot"}),wn=u.Schema.Struct({x:Vr,y:Vr}).annotate({identifier:"Device.LogicalPoint"}),Io=u.Schema.Struct({id:_e,name:_e,platform:We,osVersion:Fe(_e),state:ko,ownership:xo}).annotate({identifier:"Device.DeviceInfo"}),Oo=u.Schema.Struct({supported:u.Schema.Array(Gr),unsupported:u.Schema.Array(u.Schema.Struct({capability:Gr,reason:_e}))}).annotate({identifier:"Device.Capabilities"}),To=u.Schema.Struct({id:_e,name:Fe(_e)}).annotate({identifier:"Device.AppInfo"}),Co=u.Schema.Struct({app:_e,state:u.Schema.Literals(["launched","foreground","unknown"])}).annotate({identifier:"Device.LaunchResult"}),Po=u.Schema.Struct({installed:u.Schema.Boolean,app:Fe(_e)}).annotate({identifier:"Device.InstallResult"}),Bo=u.Schema.Struct({data:u.Schema.Uint8ArrayFromBase64.check(u.Schema.isMaxLength(_o)),width:bt,height:bt,deviceId:_e,platform:We}).annotate({identifier:"Device.Screenshot"}),Mo=u.Schema.Literals(["mjpeg","h264"]).annotate({identifier:"Device.StreamProtocol"}),No=u.Schema.Struct({platform:We,deviceId:_e,baseUrl:_e,token:_e,protocol:Mo,loopback:u.Schema.Literal(!0)}).annotate({identifier:"Device.StreamDescriptor"}),Uo=u.Schema.Literals(["missing-prerequisite","permission-denied","device-busy","detached","stale-reference","unsupported","not-found","invalid-artifact","timeout","helper-failed","internal"]).annotate({identifier:"Device.DeviceErrorCode"}),En=u.Schema.Struct({code:Uo,message:_e,mayHaveExecuted:u.Schema.Boolean}).annotate({identifier:"Device.DeviceError"}),st=u.Schema.optional,Ue=u.Schema.String.check(u.Schema.isMaxLength(2048)),ei=Ue.check(u.Schema.isMinLength(1)),_n={sessionID:ei,connectionID:u.Schema.String},Hr={..._n,requestID:u.Schema.String},Jr=u.Schema.Number.check(u.Schema.isInt(),u.Schema.isBetween({minimum:1,maximum:1e6})),Kr=u.Schema.optional(u.Schema.Struct({width:Jr,height:Jr})),ot=u.Schema.Struct({sessionID:ei,serverID:Ue,location:u.Schema.optionalKey(u.Schema.Struct({directory:Ue}))}),At=u.Schema.Struct({handle:De,selection:u.Schema.optionalKey(u.Schema.Struct({platform:We,deviceId:Ue})),capabilities:Oo,agentAccess:u.Schema.Boolean}).annotate({identifier:"DeviceBridge.Attachment"}),ti=u.Schema.Union([u.Schema.Struct({type:u.Schema.Literal("list"),platform:st(We)}),u.Schema.Struct({type:u.Schema.Literal("state")}),u.Schema.Struct({type:u.Schema.Literal("open"),platform:We,deviceId:Ue,boot:st(u.Schema.Boolean)}),u.Schema.Struct({type:u.Schema.Literal("apps"),handle:De}),u.Schema.Struct({type:u.Schema.Literal("launch"),handle:De,app:Ue,deepLink:st(Ue),relaunch:st(u.Schema.Boolean)}),u.Schema.Struct({type:u.Schema.Literal("install"),handle:De,artifactPath:Ue}),u.Schema.Struct({type:u.Schema.Literal("snapshot"),handle:De,interactiveOnly:st(u.Schema.Boolean)}),u.Schema.Struct({type:u.Schema.Literal("press"),handle:De,reference:qr}),u.Schema.Struct({type:u.Schema.Literal("tap"),handle:De,point:wn,viewport:Kr}),u.Schema.Struct({type:u.Schema.Literal("fill"),handle:De,reference:qr,text:Ue}),u.Schema.Struct({type:u.Schema.Literal("swipe"),handle:De,from:wn,to:wn,viewport:Kr}),u.Schema.Struct({type:u.Schema.Literal("key"),handle:De,key:Eo}),u.Schema.Struct({type:u.Schema.Literal("screenshot"),handle:De}),u.Schema.Struct({type:u.Schema.Literal("close"),handle:De,shutdown:st(u.Schema.Boolean)})]).pipe(u.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Operation"}),Ro=u.Schema.Union([u.Schema.Struct({type:u.Schema.Literal("devices"),devices:u.Schema.Array(Io)}),u.Schema.Struct({type:u.Schema.Literal("state"),state:u.Schema.NullOr(At)}),u.Schema.Struct({type:u.Schema.Literal("attachment"),attachment:At}),u.Schema.Struct({type:u.Schema.Literal("apps"),apps:u.Schema.Array(To)}),u.Schema.Struct({type:u.Schema.Literal("launch"),result:Co}),u.Schema.Struct({type:u.Schema.Literal("install"),result:Po}),u.Schema.Struct({type:u.Schema.Literal("snapshot"),snapshot:Lo}),u.Schema.Struct({type:u.Schema.Literal("screenshot"),screenshot:Bo}),u.Schema.Struct({type:u.Schema.Literal("done")})]).pipe(u.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Value"}),Rt=u.Schema.Union([u.Schema.Struct({type:u.Schema.Literal("success"),value:Ro}),u.Schema.Struct({type:u.Schema.Literal("failure"),error:En})]).pipe(u.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Outcome"}),Ao=u.Schema.Union([u.Schema.Struct({type:u.Schema.Literal("success"),stream:No}),u.Schema.Struct({type:u.Schema.Literal("failure"),error:En})]).pipe(u.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.StreamOutcome"}),$o=u.Schema.Union([u.Schema.Struct({type:u.Schema.Literal("attached"),connectionID:u.Schema.String,version:u.Schema.Literal(1)}),u.Schema.Struct({type:u.Schema.Literal("command"),connectionID:u.Schema.String,requestID:u.Schema.String}),u.Schema.Struct({type:u.Schema.Literal("cancel"),connectionID:u.Schema.String,requestID:u.Schema.String})]).pipe(u.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Control"}),Pe=u.Schema.toStandardSchemaV1,Nt={unavailable:Pe(En)};bo.Rpc.define({id:"device.control",methods:{attach:{input:Pe(u.Schema.Struct({..._n,version:u.Schema.Literal(1)})),output:Pe(u.Schema.Literals(["closed","replaced"])),errors:Nt},state:{input:Pe(u.Schema.Struct({..._n,state:u.Schema.NullOr(At)})),output:Pe(u.Schema.Void),errors:Nt},command:{input:Pe(u.Schema.Struct(Hr)),output:Pe(ti),errors:Nt},result:{input:Pe(u.Schema.Struct({...Hr,outcome:Rt})),output:Pe(u.Schema.Void),errors:Nt}},events:{control:{schema:Pe($o)}}});const Xr=u.Schema.String.check(u.Schema.isMaxLength(2048)),jo=yt.Ipc.define({id:"demul.device.bridge.v2",state:u.Schema.Array(u.Schema.Struct({scope:ot,state:u.Schema.NullOr(At)})),methods:{connect:{input:ot},disconnect:{input:ot},list:{input:u.Schema.Struct({platform:u.Schema.optional(We),serverID:Xr,sessionID:u.Schema.optionalKey(Xr)}),output:Rt},access:{input:u.Schema.Struct({scope:ot,enabled:u.Schema.Boolean}),output:Rt},manual:{input:u.Schema.Struct({scope:ot,operation:ti}),output:Rt},stream:{input:u.Schema.Struct({scope:ot,handle:De}),output:Ao}}});function Fo(g,L,_,M){if(!(!g||g!==L||_!=="playing"||!Number.isSafeInteger(M.width)||!Number.isSafeInteger(M.height)||M.width<=0||M.height<=0))return{token:g,width:M.width,height:M.height}}function Wo(g,L){return!!L&&g.token===L.token&&g.width===L.width&&g.height===L.height}const zo=1397050709,ni=16*1024*1024;function Vo(g){let L=!1,_;const M=()=>{const r=L&&document.visibilityState==="visible";if(r&&!_){_=g.stream.protocol==="h264"?Xo(g):Qo(g);return}r||!_||(_(),_=void 0,g.onState(L?"paused":"idle"))},q=()=>M();return document.addEventListener("visibilitychange",q),{active(r){L=r,M()},destroy(){L=!1,document.removeEventListener("visibilitychange",q),_?.(),_=void 0,g.canvas.width=0,g.canvas.height=0,g.onState("idle")}}}function Go(g){const L=new Uint8Array(g),_=new DataView(g);if(L.byteLength<4)return;if(_.getUint32(0)!==zo)return Qr(L)?{bytes:L,key:Ut(L,5)||Ut(L,7),timestamp:performance.now()*1e3}:void 0;if(L.byteLength<16)return;const M=_.getUint8(4),q=M===1?16:M===2?24:0;if(!q||L.byteLength<=q)return;const r=_.getBigUint64(8);if(r>BigInt(Number.MAX_SAFE_INTEGER))return;const ee=L.subarray(q);if(Qr(ee))return{bytes:ee,key:(_.getUint8(5)&1)===1||Ut(ee,5)||Ut(ee,7),timestamp:Number(r),serverTimestamp:M===2?Number(_.getBigUint64(16))/1e3:void 0}}function qo(g){const 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r=_("effect"),ee=_("@opencode/schema/rpc"),V=_("@opencode/plugin/gui"),W=_("node:fs/promises"),se=_("node:os"),$=_("node:path"),de=_("node:child_process"),he=_("node:net"),oe=_("node:timers/promises"),ae=_("events"),ce=_("https"),ue=_("http"),ze=_("net"),Le=_("tls"),pe=_("crypto"),fe=_("stream"),Re=_("url"),at=_("zlib"),_t=_("buffer"),$t=_("util"),Ve=_("node:crypto"),kt=_("node:events"),xt=_("node:http"),Ae=8*1024*1024,Oe=r.Schema.optional,re=r.Schema.String.check(r.Schema.isMaxLength(2048)),ke=r.Schema.String.check(r.Schema.isMaxLength(1e5)),Be=r.Schema.Int.check(r.Schema.isGreaterThanOrEqualTo(0)),Je=r.Schema.Int.check(r.Schema.isBetween({minimum:0,maximum:1e6})),we=r.Schema.Literals(["ios","android"]).annotate({identifier:"Device.Platform"}),ct=r.Schema.Literals(["shutdown","booting","booted","unavailable"]).annotate({identifier:"Device.DeviceState"}),Ke=r.Schema.Literals(["available","owned-by-this-host","owned-by-other","unknown"]).annotate({identifier:"Device.Ownership"}),Xe=r.Schema.Literals(["apps","launch","install","snapshot","press","fill","swipe","key","screenshot","stream"]).annotate({identifier:"Device.Capability"}),jt=r.Schema.Literals(["home","back","recents","lock","volumeUp","volumeDown"]).annotate({identifier:"Device.NavigationKey"}),Ge=Be.annotate({identifier:"Device.Generation"}),Qe=r.Schema.String.check(r.Schema.isPattern(/^dh_[a-f0-9-]{36}$/u)).pipe(r.Schema.brand("Device.HandleToken")).annotate({identifier:"Device.HandleToken"}),ve=r.Schema.Struct({token:Qe,platform:we,deviceId:re,generation:Ge}).annotate({identifier:"Device.DeviceHandle"}),lt=r.Schema.String.check(r.Schema.isPattern(/^@?e[1-9][0-9]*$/u)).pipe(r.Schema.brand("Device.ElementRef")).annotate({identifier:"Device.ElementRef"}),Et=r.Schema.Struct({token:Qe,generation:Ge,revision:Be,ref:lt}).annotate({identifier:"Device.SnapshotReference"}),z=r.Schema.Struct({ref:Oe(lt),role:re,name:Oe(ke),value:Oe(ke),enabled:Oe(r.Schema.Boolean),focused:Oe(r.Schema.Boolean)}).annotate({identifier:"Device.AccessibilityNode"}),Q=r.Schema.Struct({token:Qe,generation:Ge,revision:Be,interactiveOnly:r.Schema.Boolean,complete:r.Schema.Boolean,nodes:r.Schema.Array(z)}).annotate({identifier:"Device.Snapshot"}),H=r.Schema.Struct({x:Je,y:Je}).annotate({identifier:"Device.LogicalPoint"}),le=r.Schema.Struct({id:re,name:re,platform:we,osVersion:Oe(re),state:ct,ownership:Ke}).annotate({identifier:"Device.DeviceInfo"}),me=r.Schema.Struct({supported:r.Schema.Array(Xe),unsupported:r.Schema.Array(r.Schema.Struct({capability:Xe,reason:re}))}).annotate({identifier:"Device.Capabilities"}),xe=r.Schema.Struct({id:re,name:Oe(re)}).annotate({identifier:"Device.AppInfo"}),Ye=r.Schema.Struct({app:re,state:r.Schema.Literals(["launched","foreground","unknown"])}).annotate({identifier:"Device.LaunchResult"}),Z=r.Schema.Struct({installed:r.Schema.Boolean,app:Oe(re)}).annotate({identifier:"Device.InstallResult"}),ge=r.Schema.Struct({data:r.Schema.Uint8ArrayFromBase64.check(r.Schema.isMaxLength(Ae)),width:Be,height:Be,deviceId:re,platform:we}).annotate({identifier:"Device.Screenshot"}),Te=r.Schema.Literals(["mjpeg","h264"]).annotate({identifier:"Device.StreamProtocol"}),qe=r.Schema.Struct({platform:we,deviceId:re,baseUrl:re,token:re,protocol:Te,loopback:r.Schema.Literal(!0)}).annotate({identifier:"Device.StreamDescriptor"}),Dt=r.Schema.Literals(["missing-prerequisite","permission-denied","device-busy","detached","stale-reference","unsupported","not-found","invalid-artifact","timeout","helper-failed","internal"]).annotate({identifier:"Device.DeviceErrorCode"}),Ft=r.Schema.Struct({code:Dt,message:re,mayHaveExecuted:r.Schema.Boolean}).annotate({identifier:"Device.DeviceError"}),Ze=r.Schema.optional,Me=r.Schema.String.check(r.Schema.isMaxLength(2048)),Dn=Me.check(r.Schema.isMinLength(1)),Wt={sessionID:Dn,connectionID:r.Schema.String},Ln={...Wt,requestID:r.Schema.String},In=r.Schema.Number.check(r.Schema.isInt(),r.Schema.isBetween({minimum:1,maximum:1e6})),On=r.Schema.optional(r.Schema.Struct({width:In,height:In})),et=r.Schema.Struct({sessionID:Dn,serverID:Me,location:r.Schema.optionalKey(r.Schema.Struct({directory:Me}))}),Lt=r.Schema.Struct({handle:ve,selection:r.Schema.optionalKey(r.Schema.Struct({platform:we,deviceId:Me})),capabilities:me,agentAccess:r.Schema.Boolean}).annotate({identifier:"DeviceBridge.Attachment"}),Tn=r.Schema.Union([r.Schema.Struct({type:r.Schema.Literal("list"),platform:Ze(we)}),r.Schema.Struct({type:r.Schema.Literal("state")}),r.Schema.Struct({type:r.Schema.Literal("open"),platform:we,deviceId:Me,boot:Ze(r.Schema.Boolean)}),r.Schema.Struct({type:r.Schema.Literal("apps"),handle:ve}),r.Schema.Struct({type:r.Schema.Literal("launch"),handle:ve,app:Me,deepLink:Ze(Me),relaunch:Ze(r.Schema.Boolean)}),r.Schema.Struct({type:r.Schema.Literal("install"),handle:ve,artifactPath:Me}),r.Schema.Struct({type:r.Schema.Literal("snapshot"),handle:ve,interactiveOnly:Ze(r.Schema.Boolean)}),r.Schema.Struct({type:r.Schema.Literal("press"),handle:ve,reference:Et}),r.Schema.Struct({type:r.Schema.Literal("tap"),handle:ve,point:H,viewport:On}),r.Schema.Struct({type:r.Schema.Literal("fill"),handle:ve,reference:Et,text:Me}),r.Schema.Struct({type:r.Schema.Literal("swipe"),handle:ve,from:H,to:H,viewport:On}),r.Schema.Struct({type:r.Schema.Literal("key"),handle:ve,key:jt}),r.Schema.Struct({type:r.Schema.Literal("screenshot"),handle:ve}),r.Schema.Struct({type:r.Schema.Literal("close"),handle:ve,shutdown:Ze(r.Schema.Boolean)})]).pipe(r.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Operation"}),si=r.Schema.Union([r.Schema.Struct({type:r.Schema.Literal("devices"),devices:r.Schema.Array(le)}),r.Schema.Struct({type:r.Schema.Literal("state"),state:r.Schema.NullOr(Lt)}),r.Schema.Struct({type:r.Schema.Literal("attachment"),attachment:Lt}),r.Schema.Struct({type:r.Schema.Literal("apps"),apps:r.Schema.Array(xe)}),r.Schema.Struct({type:r.Schema.Literal("launch"),result:Ye}),r.Schema.Struct({type:r.Schema.Literal("install"),result:Z}),r.Schema.Struct({type:r.Schema.Literal("snapshot"),snapshot:Q}),r.Schema.Struct({type:r.Schema.Literal("screenshot"),screenshot:ge}),r.Schema.Struct({type:r.Schema.Literal("done")})]).pipe(r.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Value"}),dt=r.Schema.Union([r.Schema.Struct({type:r.Schema.Literal("success"),value:si}),r.Schema.Struct({type:r.Schema.Literal("failure"),error:Ft})]).pipe(r.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Outcome"}),oi=r.Schema.Union([r.Schema.Struct({type:r.Schema.Literal("success"),stream:qe}),r.Schema.Struct({type:r.Schema.Literal("failure"),error:Ft})]).pipe(r.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.StreamOutcome"}),ai=r.Schema.Union([r.Schema.Struct({type:r.Schema.Literal("attached"),connectionID:r.Schema.String,version:r.Schema.Literal(1)}),r.Schema.Struct({type:r.Schema.Literal("command"),connectionID:r.Schema.String,requestID:r.Schema.String}),r.Schema.Struct({type:r.Schema.Literal("cancel"),connectionID:r.Schema.String,requestID:r.Schema.String})]).pipe(r.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Control"}),Ce=r.Schema.toStandardSchemaV1,It={unavailable:Ce(Ft)},zt=ee.Rpc.define({id:"device.control",methods:{attach:{input:Ce(r.Schema.Struct({...Wt,version:r.Schema.Literal(1)})),output:Ce(r.Schema.Literals(["closed","replaced"])),errors:It},state:{input:Ce(r.Schema.Struct({...Wt,state:r.Schema.NullOr(Lt)})),output:Ce(r.Schema.Void),errors:It},command:{input:Ce(r.Schema.Struct(Ln)),output:Ce(Tn),errors:It},result:{input:Ce(r.Schema.Struct({...Ln,outcome:dt})),output:Ce(r.Schema.Void),errors:It}},events:{control:{schema:Ce(ai)}}}),Cn=r.Schema.String.check(r.Schema.isMaxLength(2048)),ci=V.Ipc.define({id:"demul.device.bridge.v2",state:r.Schema.Array(r.Schema.Struct({scope:et,state:r.Schema.NullOr(Lt)})),methods:{connect:{input:et},disconnect:{input:et},list:{input:r.Schema.Struct({platform:r.Schema.optional(we),serverID:Cn,sessionID:r.Schema.optionalKey(Cn)}),output:dt},access:{input:r.Schema.Struct({scope:et,enabled:r.Schema.Boolean}),output:dt},manual:{input:r.Schema.Struct({scope:et,operation:Tn}),output:dt},stream:{input:r.Schema.Struct({scope:et,handle:ve}),output:oi}}});class Pn extends Error{code;mayHaveExecuted;constructor(t){super(t.message),this.name="DeviceFailure",this.code=t.code,this.mayHaveExecuted=t.mayHaveExecuted}get data(){return{code:this.code,message:this.message,mayHaveExecuted:this.mayHaveExecuted}}}function N(e,t,s=!1){return new Pn({code:e,message:t,mayHaveExecuted:s})}function li(e){return e instanceof Pn}function di(e){const t=new Map,s=new Map,i=new Set,a=new Map,d=new Map;let c=!1;const f=o=>JSON.stringify([o.serverID,o.sessionID]),p=(o,h)=>JSON.stringify([o,h]),v=o=>({handle:o.device.handle,selection:{platform:o.selection.platform,deviceId:o.selection.deviceId},capabilities:o.device.capabilities,agentAccess:o.agentAccess}),y=o=>{if(c)throw N("detached","The device controller has stopped.");const h=t.get(f(o));if(!h)throw N("detached","Attach a device in the Device panel first.");if(h.closing)throw N("device-busy","This session is changing its device.");return h},O=(o,h,n)=>{const l=y(o),m=l.device.handle;if(m.token!==h.token||m.generation!==h.generation||m.platform!==h.platform||m.deviceId!==h.deviceId)throw N("permission-denied","This handle does not belong to this session's attached device.");if(n==="agent"&&!l.agentAccess)throw N("permission-denied","Enable agent access in the Device panel first.");return l},I=(o,h)=>{const n=f(o),l=(d.get(n)??Promise.resolve()).then(h),m=l.then(()=>{},()=>{});return d.set(n,m),m.then(()=>{d.get(n)===m&&d.delete(n)}),l},S=o=>{s.forEach((h,n)=>{h===o&&s.delete(n)})},w=async(o,h,n)=>{o.closing=!0;try{await o.pending,n?.throwIfAborted(),await e.close({handle:o.device.handle,...h?{shutdown:h}:{}}),S(o)}catch(l){throw o.closing=!1,l}},k=async(o,h)=>{a.set(o,h),await e.close({handle:h.handle,shutdown:!0}),a.delete(o)},T=async o=>{try{await k(p(o.selection.platform,o.selection.deviceId),o.device)}finally{S(o)}},x=async(o,h)=>{const n=p(o.platform,o.deviceId);if(s.has(n)||i.has(n))throw N("device-busy","This device is controlled by another session.");i.add(n);try{const l=a.get(n)??await e.open(o),m=p(l.handle.platform,l.handle.deviceId);if(s.has(m))throw await e.close({handle:l.handle}),N("device-busy","This device is controlled by another session.");if(h?.aborted||c)throw await k(n,l),h?.throwIfAborted(),N("detached","The device controller has stopped.");const E={selection:o,device:l,pending:Promise.resolve(),agentAccess:!0,closing:!1};return a.delete(n),s.set(n,E),s.set(m,E),E}finally{i.delete(n)}},C=(o,h,n,l,m)=>{m?.throwIfAborted();const E=O(o,h,n),B=E.pending.then(()=>(m?.throwIfAborted(),O(o,h,n),l(E)));return E.pending=B.then(()=>{},()=>{}),B},P=async o=>{switch(o.type){case"apps":return{type:"apps",apps:await e.apps(o.handle)};case"snapshot":return{type:"snapshot",snapshot:await e.snapshot(o)};case"screenshot":return{type:"screenshot",screenshot:await e.screenshot(o.handle)}}},R=async o=>{switch(o.type){case"launch":return{type:"launch",result:await e.launch(o)};case"install":return{type:"install",result:await e.install(o)};case"press":await e.press(o);break;case"tap":await e.tap(o);break;case"fill":await e.fill(o);break;case"swipe":await e.swipe(o);break;case"key":await e.key(o)}return{type:"done"}};return{async list(o,h){if(c)throw N("detached","The device controller has stopped.");const n=h?t.get(f(h)):void 0;return(await e.list(o)).map(l=>{const m=p(l.platform,l.id),E=s.get(m);return E?{...l,ownership:E===n?"owned-by-this-host":"owned-by-other"}:i.has(m)?{...l,ownership:"owned-by-other"}:l})},state(o){const h=t.get(f(o));return h?v(h):null},access(o,h){const n=y(o);return n.agentAccess=h,v(n)},async open(o,h,n,l){return I(o,async()=>{if(l?.throwIfAborted(),c)throw N("detached","The device controller has stopped.");const m=t.get(f(o));if(m&&s.get(p(h.platform,h.deviceId))===m)return O(o,m.device.handle,n),v(m);if(n==="agent")throw N("permission-denied","Attach a device and enable agent access in the Device panel first.");const E=await x(h,l);try{m&&await w(m,void 0,l)}catch(B){throw await T(E),B}return E.agentAccess=m?.agentAccess??!0,t.set(f(o),E),v(E)})},async stream(o,h){return C(o,h,"manual",n=>e.stream(n.device.handle))},async run(o,h,n,l){return C(o,h.handle,n,()=>{switch(h.type){case"apps":case"snapshot":case"screenshot":return P(h);default:return R(h)}},l)},async close(o,h,n,l){return I(o,async()=>{l?.throwIfAborted();const m=O(o,h.handle,n);await w(m,h.shutdown,l),t.delete(f(o))})},async detach(o){return I(o,async()=>{const h=t.get(f(o));h&&(await w(h),t.delete(f(o)))})},async dispose(){c=!0,await Promise.all(d.values()),await Promise.all([...new Set(s.values())].map(o=>o.pending)),t.clear(),s.clear();for(const[o,h]of a)await e.close({handle:h.handle,shutdown:!0}),a.delete(o);await e.dispose()}}}function He(e,t){return r.Schema.decodeUnknownOption(r.Schema.fromJsonString(e))(t)}const Bn=4*1024*1024;function ht(e,t,s){const i=e+t;return i.length<=s?i:i.slice(i.length-s)}function ye(e){const t=e.maxBytes??Bn;return new Promise(s=>{const i=de.spawn(e.command,[...e.args],{cwd:e.cwd,env:e.env?{...process.env,...e.env}:process.env,stdio:["pipe","pipe","pipe"]});let a="",d="",c=!1,f=!1;const p=setTimeout(()=>{c=!0,i.kill("SIGKILL")},e.timeoutMs),v=y=>{f||(f=!0,clearTimeout(p),s(y))};i.stdout?.on("data",y=>a=ht(a,y.toString("utf8"),t)),i.stderr?.on("data",y=>d=ht(d,y.toString("utf8"),t)),i.on("error",y=>v({code:null,signal:null,stdout:a,stderr:d,timedOut:c,spawnError:y.message})),i.on("close",(y,O)=>v({code:y,signal:O,stdout:a,stderr:d,timedOut:c})),e.input!==void 0?i.stdin?.end(e.input):i.stdin?.end()})}const hi=2e3,ui=2e3,Mn=new WeakMap;function Nn(e,t=hi,s=ui){const i=Mn.get(e);if(i)return i;const a=(async()=>{try{e.stop("SIGTERM")}catch{}if(!await Un(e,t)){try{e.stop("SIGKILL")}catch{}if(!await Un(e,s))throw e.release?.(),N("timeout","The device helper did not exit after SIGTERM and SIGKILL within the cleanup deadline.")}})();return Mn.set(e,a),a}async function Un(e,t){let s;try{return await Promise.race([e.exited.then(()=>!0,()=>!1),new Promise(i=>{s=setTimeout(()=>i(!1),t)})])}finally{clearTimeout(s)}}function Rn(e){const t=de.spawn(e.command,[...e.args],{cwd:e.cwd,env:e.env?{...process.env,...e.env}:process.env,stdio:["ignore","pipe","pipe"]});An(t.stdout,e.onStdoutLine,e.maxBytes),An(t.stderr,e.onStderrLine,e.maxBytes);const s=new Promise(i=>{t.on("error",a=>{e.onStderrLine?.(a.message),i({code:null,signal:null})}),t.on("close",(a,d)=>i({code:a,signal:d}))});return{pid:t.pid,exited:s,stop:(i="SIGTERM")=>{t.exitCode===null&&t.signalCode===null&&t.kill(i)},release:()=>{t.stdout?.destroy(),t.stderr?.destroy(),t.unref()}}}function An(e,t,s=Bn){if(!e||!t)return;let i="";e.on("data",a=>{i+=a.toString("utf8");let d=i.indexOf(`
-`);for(;d!==-1;)t(ht("",i.slice(0,d).replace(/\r$/u,""),s)),i=i.slice(d+1),d=i.indexOf(`
-`);i=ht("",i,s)}),e.on("close",()=>{i.length>0&&t(i.replace(/\r$/u,""))})}function fi(e,t,s){const i=t?["open",e,t]:["open",e];return s?[...i,"--relaunch"]:i}function mi(e){return e?["snapshot","-i","--json"]:["snapshot","--json"]}function pi(e){return["press",e,"--settle"]}function Si(e){return["press",String(e.x),String(e.y),"--settle"]}function gi(e,t){return["fill",e,t,"--settle"]}function vi(e,t){return["swipe",String(e.x),String(e.y),String(t.x),String(t.y)]}const wi={home:["home"],back:["back","--settle"],recents:["app-switcher"],lock:["hardware-button","sleep"],volumeUp:["hardware-button","volume-up"],volumeDown:["hardware-button","volume-down"]};function yi(e){return[...wi[e]]}function bi(e){return["screenshot",e]}function _i(){return["apps","--all","--json"]}function ki(e){return["install",e]}function xi(){return["capabilities","--json"]}function $n(){return["close"]}const Ei=r.Schema.Struct({ref:r.Schema.optional(r.Schema.String),kind:r.Schema.optional(r.Schema.String),type:r.Schema.optional(r.Schema.String),label:r.Schema.optional(r.Schema.String),value:r.Schema.optional(r.Schema.String),enabled:r.Schema.optional(r.Schema.Boolean),focused:r.Schema.optional(r.Schema.Boolean)}),Di=r.Schema.Struct({data:r.Schema.Struct({nodes:r.Schema.Array(Ei),truncated:r.Schema.optional(r.Schema.Boolean)})}),Li=r.Schema.decodeUnknownOption(lt);function Ii(e){const t=He(Di,e);return r.Option.isNone(t)?null:{nodes:t.value.data.nodes.flatMap(s=>{const i=s.kind??s.type;if(!i)return[];const a=s.ref?Li(s.ref.startsWith("@")?s.ref:`@${s.ref}`):r.Option.none();return[{role:i,...r.Option.isSome(a)?{ref:a.value}:{},...s.label?{name:s.label}:{},...s.value!==void 0?{value:s.value}:{},...s.enabled!==void 0?{enabled:s.enabled}:{},...s.focused!==void 0?{focused:s.focused}:{}}]}),complete:!(t.value.data.truncated??!1)}}const Oi=r.Schema.Struct({data:r.Schema.Struct({apps:r.Schema.Array(r.Schema.Union([r.Schema.String,r.Schema.Struct({id:r.Schema.optional(r.Schema.String),bundleId:r.Schema.optional(r.Schema.String),packageName:r.Schema.optional(r.Schema.String),name:r.Schema.optional(r.Schema.String),label:r.Schema.optional(r.Schema.String)})]))})}),Ti=/^(.+?)\s+\(([^()]+)\)\s*$/u;function Ci(e){const t=He(Oi,e);return r.Option.isNone(t)?null:t.value.data.apps.flatMap(s=>{if(typeof s=="string"){const d=s.match(Ti);return d?[{id:d[2],name:d[1]}]:s.trim()?[{id:s.trim()}]:[]}const i=s.id??s.bundleId??s.packageName;if(!i)return[];const a=s.name??s.label;return[a?{id:i,name:a}:{id:i}]})}const Pi=r.Schema.Struct({data:r.Schema.Struct({availableCommands:r.Schema.optional(r.Schema.Array(r.Schema.String))})}),jn={apps:"apps",launch:"open",install:"install",snapshot:"snapshot",press:"press",fill:"fill",swipe:"swipe",key:"home",screenshot:"screenshot"};function Bi(e){const t=He(Pi,e);if(r.Option.isNone(t))return null;const s=new Set(t.value.data.availableCommands??[]);return Object.keys(jn).filter(i=>s.has(jn[i]))}const Mi=r.Schema.Struct({success:r.Schema.Literal(!1),error:r.Schema.Struct({code:r.Schema.String,message:r.Schema.String,hint:r.Schema.optional(r.Schema.String),details:r.Schema.optional(r.Schema.Struct({reason:r.Schema.optional(r.Schema.String),dispatched:r.Schema.optional(r.Schema.String)}))})});function Fn(e,t,s){const i=He(Mi,e.trim());if(r.Option.isNone(i))return null;const{code:a,message:d,hint:c,details:f}=i.value.error,p=f?.dispatched==="no"?!1:s;if(f?.reason==="ios_app_session_required")return N("missing-prerequisite",`${t} needs an app session on iOS; launch the app under test first.`,p);const v=`${t} failed: ${d}${c?` ${c}`:""}`;return a==="UNSUPPORTED_OPERATION"?N("unsupported",v,p):a.includes("TIMEOUT")||/timed out/iu.test(d)?N("timeout",v,p):N("helper-failed",v,p)}function Ni(e){const t=e.timeoutMs??12e4,s=["--platform",e.platform,e.platform==="android"?"--serial":"--udid",e.deviceId];return{run:(i,a)=>ye({command:e.externalNode,args:[e.agentDeviceBin,...i,...i.includes("--json")?[]:["--json"],...s],cwd:e.stateDir,env:e.env,timeoutMs:a??t}),require:(i,a,d=!1)=>{if(i.timedOut)throw N("timeout",`${a} timed out.`,d);if(i.spawnError)throw N("helper-failed",`${a} could not start: ${i.spawnError}`);if(i.code!==0){const c=Fn(i.stdout,a,d)??Fn(i.stderr,a,d);if(c)throw c;const f=i.stderr.split(`
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C.serverMaxWindowBits=="number"&&(P.server_max_window_bits=C.serverMaxWindowBits),typeof C.clientMaxWindowBits=="number"?P.client_max_window_bits=C.clientMaxWindowBits:(P.client_max_window_bits===!0||C.clientMaxWindowBits===!1)&&delete P.client_max_window_bits,P}acceptAsClient(x){const C=x[0];if(this._options.clientNoContextTakeover===!1&&C.client_no_context_takeover)throw new Error('Unexpected parameter "client_no_context_takeover"');if(!C.client_max_window_bits)typeof this._options.clientMaxWindowBits=="number"&&(C.client_max_window_bits=this._options.clientMaxWindowBits);else if(this._options.clientMaxWindowBits===!1||typeof this._options.clientMaxWindowBits=="number"&&C.client_max_window_bits>this._options.clientMaxWindowBits)throw new Error('Unexpected or invalid parameter "client_max_window_bits"');return C}normalizeParams(x){return x.forEach(C=>{Object.keys(C).forEach(P=>{let R=C[P];if(R.length>1)throw new Error(`Parameter "${P}" must have only a single value`);if(R=R[0],P==="client_max_window_bits"){if(R!==!0){const o=+R;if(!Number.isInteger(o)||o<8||o>15)throw new TypeError(`Invalid value for parameter "${P}": ${R}`);R=o}else if(!this._isServer)throw new TypeError(`Invalid value for parameter "${P}": ${R}`)}else if(P==="server_max_window_bits"){const o=+R;if(!Number.isInteger(o)||o<8||o>15)throw new TypeError(`Invalid value for parameter "${P}": ${R}`);R=o}else if(P==="client_no_context_takeover"||P==="server_no_context_takeover"){if(R!==!0)throw new TypeError(`Invalid value for parameter "${P}": ${R}`)}else throw new Error(`Unknown parameter "${P}"`);C[P]=R})}),x}decompress(x,C,P){O.add(R=>{this._decompress(x,C,(o,h)=>{R(),P(o,h)})})}compress(x,C,P){O.add(R=>{this._compress(x,C,(o,h)=>{R(),P(o,h)})})}_decompress(x,C,P){const R=this._isServer?"client":"server";if(!this._inflate){const o=`${R}_max_window_bits`,h=typeof this.params[o]!="number"?e.Z_DEFAULT_WINDOWBITS:this.params[o];this._inflate=e.createInflateRaw({...this._options.zlibInflateOptions,windowBits:h}),this._inflate[c]=this,this._inflate[f]=0,this._inflate[v]=[],this._inflate.on("error",k),this._inflate.on("data",w)}this._inflate[p]=P,this._inflate.write(x),C&&this._inflate.write(d),this._inflate.flush(()=>{const o=this._inflate[y];if(o){this._inflate.close(),this._inflate=null,P(o);return}const h=t.concat(this._inflate[v],this._inflate[f]);this._inflate._readableState.endEmitted?(this._inflate.close(),this._inflate=null):(this._inflate[f]=0,this._inflate[v]=[],C&&this.params[`${R}_no_context_takeover`]&&this._inflate.reset()),P(null,h)})}_compress(x,C,P){const R=this._isServer?"server":"client";if(!this._deflate){const o=`${R}_max_window_bits`,h=typeof this.params[o]!="number"?e.Z_DEFAULT_WINDOWBITS:this.params[o];this._deflate=e.createDeflateRaw({...this._options.zlibDeflateOptions,windowBits:h}),this._deflate[f]=0,this._deflate[v]=[],this._deflate.on("data",S)}this._deflate[p]=P,this._deflate.write(x),this._deflate.flush(e.Z_SYNC_FLUSH,()=>{if(!this._deflate)return;let o=t.concat(this._deflate[v],this._deflate[f]);C&&(o=new a(o.buffer,o.byteOffset,o.length-4)),this._deflate[p]=null,this._deflate[f]=0,this._deflate[v]=[],C&&this.params[`${R}_no_context_takeover`]&&this._deflate.reset(),P(null,o)})}}Ht=I;function S(T){this[v].push(T),this[f]+=T.length}function w(T){if(this[f]+=T.length,this[c]._maxPayload<1||this[f]<=this[c]._maxPayload){this[v].push(T);return}this[y]=new RangeError("Max payload size exceeded"),this[y].code="WS_ERR_UNSUPPORTED_MESSAGE_LENGTH",this[y][i]=1009,this.removeListener("data",w),this.reset()}function k(T){if(this[c]._inflate=null,this[y]){this[p](this[y]);return}T[i]=1007,this[p](T)}return Ht}var Ct={exports:{}},er;function ft(){if(er)return Ct.exports;er=1;const{isUtf8:e}=_t,{hasBlob:t}=$e(),s=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,1,1,0,0,1,1,0,1,1,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,0,1,0];function i(c){return c>=1e3&&c<=1014&&c!==1004&&c!==1005&&c!==1006||c>=3e3&&c<=4999}function a(c){const f=c.length;let p=0;for(;p<f;)if((c[p]&128)===0)p++;else if((c[p]&224)===192){if(p+1===f||(c[p+1]&192)!==128||(c[p]&254)===192)return!1;p+=2}else if((c[p]&240)===224){if(p+2>=f||(c[p+1]&192)!==128||(c[p+2]&192)!==128||c[p]===224&&(c[p+1]&224)===128||c[p]===237&&(c[p+1]&224)===160)return!1;p+=3}else if((c[p]&248)===240){if(p+3>=f||(c[p+1]&192)!==128||(c[p+2]&192)!==128||(c[p+3]&192)!==128||c[p]===240&&(c[p+1]&240)===128||c[p]===244&&c[p+1]>143||c[p]>244)return!1;p+=4}else return!1;return!0}function d(c){return t&&typeof c=="object"&&typeof c.arrayBuffer=="function"&&typeof c.type=="string"&&typeof c.stream=="function"&&(c[Symbol.toStringTag]==="Blob"||c[Symbol.toStringTag]==="File")}return Ct.exports={isBlob:d,isValidStatusCode:i,isValidUTF8:a,tokenChars:s},e&&(Ct.exports.isValidUTF8=function(c){return c.length<24?a(c):e(c)}),Ct.exports}var Jt,tr;function nr(){if(tr)return Jt;tr=1;const{Writable:e}=fe,t=ut(),{BINARY_TYPES:s,EMPTY_BUFFER:i,kStatusCode:a,kWebSocket:d}=$e(),{concat:c,toArrayBuffer:f,unmask:p}=Tt(),{isValidStatusCode:v,isValidUTF8:y}=ft(),O=Buffer[Symbol.species],I=0,S=1,w=2,k=3,T=4,x=5,C=6;class P extends e{constructor(o={}){super(),this._allowSynchronousEvents=o.allowSynchronousEvents!==void 0?o.allowSynchronousEvents:!0,this._binaryType=o.binaryType||s[0],this._extensions=o.extensions||{},this._isServer=!!o.isServer,this._maxBufferedChunks=o.maxBufferedChunks|0,this._maxFragments=o.maxFragments|0,this._maxPayload=o.maxPayload|0,this._skipUTF8Validation=!!o.skipUTF8Validation,this[d]=void 0,this._bufferedBytes=0,this._buffers=[],this._compressed=!1,this._payloadLength=0,this._mask=void 0,this._fragmented=0,this._masked=!1,this._fin=!1,this._opcode=0,this._totalPayloadLength=0,this._messageLength=0,this._numFragments=0,this._fragments=[],this._errored=!1,this._loop=!1,this._state=I}_write(o,h,n){if(this._opcode===8&&this._state==I)return n();if(this._maxBufferedChunks>0&&this._buffers.length>=this._maxBufferedChunks){n(this.createError(RangeError,"Too many buffered chunks",!1,1008,"WS_ERR_TOO_MANY_BUFFERED_PARTS"));return}this._bufferedBytes+=o.length,this._buffers.push(o),this.startLoop(n)}consume(o){if(this._bufferedBytes-=o,o===this._buffers[0].length)return this._buffers.shift();if(o<this._buffers[0].length){const n=this._buffers[0];return this._buffers[0]=new O(n.buffer,n.byteOffset+o,n.length-o),new O(n.buffer,n.byteOffset,o)}const h=Buffer.allocUnsafe(o);do{const n=this._buffers[0],l=h.length-o;o>=n.length?h.set(this._buffers.shift(),l):(h.set(new Uint8Array(n.buffer,n.byteOffset,o),l),this._buffers[0]=new O(n.buffer,n.byteOffset+o,n.length-o)),o-=n.length}while(o>0);return h}startLoop(o){this._loop=!0;do switch(this._state){case I:this.getInfo(o);break;case S:this.getPayloadLength16(o);break;case w:this.getPayloadLength64(o);break;case k:this.getMask();break;case T:this.getData(o);break;case x:case C:this._loop=!1;return}while(this._loop);this._errored||o()}getInfo(o){if(this._bufferedBytes<2){this._loop=!1;return}const h=this.consume(2);if((h[0]&48)!==0){const l=this.createError(RangeError,"RSV2 and RSV3 must be clear",!0,1002,"WS_ERR_UNEXPECTED_RSV_2_3");o(l);return}const n=(h[0]&64)===64;if(n&&!this._extensions[t.extensionName]){const l=this.createError(RangeError,"RSV1 must be clear",!0,1002,"WS_ERR_UNEXPECTED_RSV_1");o(l);return}if(this._fin=(h[0]&128)===128,this._opcode=h[0]&15,this._payloadLength=h[1]&127,this._opcode===0){if(n){const l=this.createError(RangeError,"RSV1 must be clear",!0,1002,"WS_ERR_UNEXPECTED_RSV_1");o(l);return}if(!this._fragmented){const l=this.createError(RangeError,"invalid opcode 0",!0,1002,"WS_ERR_INVALID_OPCODE");o(l);return}this._opcode=this._fragmented}else if(this._opcode===1||this._opcode===2){if(this._fragmented){const l=this.createError(RangeError,`invalid opcode ${this._opcode}`,!0,1002,"WS_ERR_INVALID_OPCODE");o(l);return}this._compressed=n}else if(this._opcode>7&&this._opcode<11){if(!this._fin){const l=this.createError(RangeError,"FIN must be set",!0,1002,"WS_ERR_EXPECTED_FIN");o(l);return}if(n){const l=this.createError(RangeError,"RSV1 must be clear",!0,1002,"WS_ERR_UNEXPECTED_RSV_1");o(l);return}if(this._payloadLength>125||this._opcode===8&&this._payloadLength===1){const l=this.createError(RangeError,`invalid payload length ${this._payloadLength}`,!0,1002,"WS_ERR_INVALID_CONTROL_PAYLOAD_LENGTH");o(l);return}}else{const l=this.createError(RangeError,`invalid opcode ${this._opcode}`,!0,1002,"WS_ERR_INVALID_OPCODE");o(l);return}if(!this._fin&&!this._fragmented&&(this._fragmented=this._opcode),this._masked=(h[1]&128)===128,this._isServer){if(!this._masked){const l=this.createError(RangeError,"MASK must be set",!0,1002,"WS_ERR_EXPECTED_MASK");o(l);return}}else if(this._masked){const l=this.createError(RangeError,"MASK must be clear",!0,1002,"WS_ERR_UNEXPECTED_MASK");o(l);return}this._payloadLength===126?this._state=S:this._payloadLength===127?this._state=w:this.haveLength(o)}getPayloadLength16(o){if(this._bufferedBytes<2){this._loop=!1;return}this._payloadLength=this.consume(2).readUInt16BE(0),this.haveLength(o)}getPayloadLength64(o){if(this._bufferedBytes<8){this._loop=!1;return}const h=this.consume(8),n=h.readUInt32BE(0);if(n>Math.pow(2,21)-1){const l=this.createError(RangeError,"Unsupported WebSocket frame: payload length > 2^53 - 1",!1,1009,"WS_ERR_UNSUPPORTED_DATA_PAYLOAD_LENGTH");o(l);return}this._payloadLength=n*Math.pow(2,32)+h.readUInt32BE(4),this.haveLength(o)}haveLength(o){if(this._payloadLength&&this._opcode<8&&(this._totalPayloadLength+=this._payloadLength,this._totalPayloadLength>this._maxPayload&&this._maxPayload>0)){const h=this.createError(RangeError,"Max payload size exceeded",!1,1009,"WS_ERR_UNSUPPORTED_MESSAGE_LENGTH");o(h);return}this._masked?this._state=k:this._state=T}getMask(){if(this._bufferedBytes<4){this._loop=!1;return}this._mask=this.consume(4),this._state=T}getData(o){let h=i;if(this._payloadLength){if(this._bufferedBytes<this._payloadLength){this._loop=!1;return}h=this.consume(this._payloadLength),this._masked&&(this._mask[0]|this._mask[1]|this._mask[2]|this._mask[3])!==0&&p(h,this._mask)}if(this._opcode>7){this.controlMessage(h,o);return}if(this._maxFragments>0&&++this._numFragments>this._maxFragments){const n=this.createError(RangeError,"Too many message fragments",!1,1008,"WS_ERR_TOO_MANY_BUFFERED_PARTS");o(n);return}if(this._compressed){this._state=x,this.decompress(h,o);return}h.length&&(this._messageLength=this._totalPayloadLength,this._fragments.push(h)),this.dataMessage(o)}decompress(o,h){this._extensions[t.extensionName].decompress(o,this._fin,(n,l)=>{if(n)return h(n);if(l.length){if(this._messageLength+=l.length,this._messageLength>this._maxPayload&&this._maxPayload>0){const m=this.createError(RangeError,"Max payload size exceeded",!1,1009,"WS_ERR_UNSUPPORTED_MESSAGE_LENGTH");h(m);return}this._fragments.push(l)}this.dataMessage(h),this._state===I&&this.startLoop(h)})}dataMessage(o){if(!this._fin){this._state=I;return}const h=this._messageLength,n=this._fragments;if(this._totalPayloadLength=0,this._messageLength=0,this._fragmented=0,this._numFragments=0,this._fragments=[],this._opcode===2){let l;this._binaryType==="nodebuffer"?l=c(n,h):this._binaryType==="arraybuffer"?l=f(c(n,h)):this._binaryType==="blob"?l=new Blob(n):l=n,this._allowSynchronousEvents?(this.emit("message",l,!0),this._state=I):(this._state=C,setImmediate(()=>{this.emit("message",l,!0),this._state=I,this.startLoop(o)}))}else{const l=c(n,h);if(!this._skipUTF8Validation&&!y(l)){const m=this.createError(Error,"invalid UTF-8 sequence",!0,1007,"WS_ERR_INVALID_UTF8");o(m);return}this._state===x||this._allowSynchronousEvents?(this.emit("message",l,!1),this._state=I):(this._state=C,setImmediate(()=>{this.emit("message",l,!1),this._state=I,this.startLoop(o)}))}}controlMessage(o,h){if(this._opcode===8){if(o.length===0)this._loop=!1,this.emit("conclude",1005,i),this.end();else{const n=o.readUInt16BE(0);if(!v(n)){const m=this.createError(RangeError,`invalid status code ${n}`,!0,1002,"WS_ERR_INVALID_CLOSE_CODE");h(m);return}const l=new O(o.buffer,o.byteOffset+2,o.length-2);if(!this._skipUTF8Validation&&!y(l)){const m=this.createError(Error,"invalid UTF-8 sequence",!0,1007,"WS_ERR_INVALID_UTF8");h(m);return}this._loop=!1,this.emit("conclude",n,l),this.end()}this._state=I;return}this._allowSynchronousEvents?(this.emit(this._opcode===9?"ping":"pong",o),this._state=I):(this._state=C,setImmediate(()=>{this.emit(this._opcode===9?"ping":"pong",o),this._state=I,this.startLoop(h)}))}createError(o,h,n,l,m){this._loop=!1,this._errored=!0;const E=new o(n?`Invalid WebSocket frame: ${h}`:h);return Error.captureStackTrace(E,this.createError),E.code=m,E[a]=l,E}}return Jt=P,Jt}var Kt,rr;function ir(){if(rr)return Kt;rr=1;const{Duplex:e}=fe,{randomFillSync:t}=pe,{types:{isUint8Array:s}}=$t,i=ut(),{EMPTY_BUFFER:a,kWebSocket:d,NOOP:c}=$e(),{isBlob:f,isValidStatusCode:p}=ft(),{mask:v,toBuffer:y}=Tt(),O=Symbol("kByteLength"),I=Buffer.alloc(4),S=8*1024;let w,k=S;const T=0,x=1,C=2;class P{constructor(n,l,m){this._extensions=l||{},m&&(this._generateMask=m,this._maskBuffer=Buffer.alloc(4)),this._socket=n,this._firstFragment=!0,this._compress=!1,this._bufferedBytes=0,this._queue=[],this._state=T,this.onerror=c,this[d]=void 0}static frame(n,l){let m,E=!1,B=2,G=!1;l.mask&&(m=l.maskBuffer||I,l.generateMask?l.generateMask(m):(k===S&&(w===void 0&&(w=Buffer.alloc(S)),t(w,0,S),k=0),m[0]=w[k++],m[1]=w[k++],m[2]=w[k++],m[3]=w[k++]),G=(m[0]|m[1]|m[2]|m[3])===0,B=6);let K;typeof n=="string"?(!l.mask||G)&&l[O]!==void 0?K=l[O]:(n=Buffer.from(n),K=n.length):(K=n.length,E=l.mask&&l.readOnly&&!G);let J=K;K>=65536?(B+=8,J=127):K>125&&(B+=2,J=126);const Y=Buffer.allocUnsafe(E?K+B:B);return Y[0]=l.fin?l.opcode|128:l.opcode,l.rsv1&&(Y[0]|=64),Y[1]=J,J===126?Y.writeUInt16BE(K,2):J===127&&(Y[2]=Y[3]=0,Y.writeUIntBE(K,4,6)),l.mask?(Y[1]|=128,Y[B-4]=m[0],Y[B-3]=m[1],Y[B-2]=m[2],Y[B-1]=m[3],G?[Y,n]:E?(v(n,m,Y,B,K),[Y]):(v(n,m,n,0,K),[Y,n])):[Y,n]}close(n,l,m,E){let B;if(n===void 0)B=a;else{if(typeof n!="number"||!p(n))throw new TypeError("First argument must be a valid error code number");if(l===void 0||!l.length)B=Buffer.allocUnsafe(2),B.writeUInt16BE(n,0);else{const K=Buffer.byteLength(l);if(K>123)throw new RangeError("The message must not be greater than 123 bytes");if(B=Buffer.allocUnsafe(2+K),B.writeUInt16BE(n,0),typeof l=="string")B.write(l,2);else if(s(l))B.set(l,2);else throw new TypeError("Second argument must be a string or a Uint8Array")}}const G={[O]:B.length,fin:!0,generateMask:this._generateMask,mask:m,maskBuffer:this._maskBuffer,opcode:8,readOnly:!1,rsv1:!1};this._state!==T?this.enqueue([this.dispatch,B,!1,G,E]):this.sendFrame(P.frame(B,G),E)}ping(n,l,m){let E,B;if(typeof n=="string"?(E=Buffer.byteLength(n),B=!1):f(n)?(E=n.size,B=!1):(n=y(n),E=n.length,B=y.readOnly),E>125)throw new RangeError("The data size must not be greater than 125 bytes");const G={[O]:E,fin:!0,generateMask:this._generateMask,mask:l,maskBuffer:this._maskBuffer,opcode:9,readOnly:B,rsv1:!1};f(n)?this._state!==T?this.enqueue([this.getBlobData,n,!1,G,m]):this.getBlobData(n,!1,G,m):this._state!==T?this.enqueue([this.dispatch,n,!1,G,m]):this.sendFrame(P.frame(n,G),m)}pong(n,l,m){let E,B;if(typeof n=="string"?(E=Buffer.byteLength(n),B=!1):f(n)?(E=n.size,B=!1):(n=y(n),E=n.length,B=y.readOnly),E>125)throw new RangeError("The data size must not be greater than 125 bytes");const G={[O]:E,fin:!0,generateMask:this._generateMask,mask:l,maskBuffer:this._maskBuffer,opcode:10,readOnly:B,rsv1:!1};f(n)?this._state!==T?this.enqueue([this.getBlobData,n,!1,G,m]):this.getBlobData(n,!1,G,m):this._state!==T?this.enqueue([this.dispatch,n,!1,G,m]):this.sendFrame(P.frame(n,G),m)}send(n,l,m){const E=this._extensions[i.extensionName];let B=l.binary?2:1,G=l.compress,K,J;typeof n=="string"?(K=Buffer.byteLength(n),J=!1):f(n)?(K=n.size,J=!1):(n=y(n),K=n.length,J=y.readOnly),this._firstFragment?(this._firstFragment=!1,G&&E&&E.params[E._isServer?"server_no_context_takeover":"client_no_context_takeover"]&&(G=K>=E._threshold),this._compress=G):(G=!1,B=0),l.fin&&(this._firstFragment=!0);const Y={[O]:K,fin:l.fin,generateMask:this._generateMask,mask:l.mask,maskBuffer:this._maskBuffer,opcode:B,readOnly:J,rsv1:G};f(n)?this._state!==T?this.enqueue([this.getBlobData,n,this._compress,Y,m]):this.getBlobData(n,this._compress,Y,m):this._state!==T?this.enqueue([this.dispatch,n,this._compress,Y,m]):this.dispatch(n,this._compress,Y,m)}getBlobData(n,l,m,E){this._bufferedBytes+=m[O],this._state=C,n.arrayBuffer().then(B=>{if(this._socket.destroyed){const K=new Error("The socket was closed while the blob was being read");process.nextTick(R,this,K,E);return}this._bufferedBytes-=m[O];const G=y(B);l?this.dispatch(G,l,m,E):(this._state=T,this.sendFrame(P.frame(G,m),E),this.dequeue())}).catch(B=>{process.nextTick(o,this,B,E)})}dispatch(n,l,m,E){if(!l){this.sendFrame(P.frame(n,m),E);return}const B=this._extensions[i.extensionName];this._bufferedBytes+=m[O],this._state=x,B.compress(n,m.fin,(G,K)=>{if(this._socket.destroyed){const J=new Error("The socket was closed while data was being compressed");R(this,J,E);return}this._bufferedBytes-=m[O],this._state=T,m.readOnly=!1,this.sendFrame(P.frame(K,m),E),this.dequeue()})}dequeue(){for(;this._state===T&&this._queue.length;){const n=this._queue.shift();this._bufferedBytes-=n[3][O],Reflect.apply(n[0],this,n.slice(1))}}enqueue(n){this._bufferedBytes+=n[3][O],this._queue.push(n)}sendFrame(n,l){n.length===2?(this._socket.cork(),this._socket.write(n[0]),this._socket.write(n[1],l),this._socket.uncork()):this._socket.write(n[0],l)}}Kt=P;function R(h,n,l){typeof l=="function"&&l(n);for(let m=0;m<h._queue.length;m++){const E=h._queue[m],B=E[E.length-1];typeof B=="function"&&B(n)}}function o(h,n,l){R(h,n,l),h.onerror(n)}return Kt}var Xt,sr;function ss(){if(sr)return Xt;sr=1;const{kForOnEventAttribute:e,kListener:t}=$e(),s=Symbol("kCode"),i=Symbol("kData"),a=Symbol("kError"),d=Symbol("kMessage"),c=Symbol("kReason"),f=Symbol("kTarget"),p=Symbol("kType"),v=Symbol("kWasClean");class y{constructor(T){this[f]=null,this[p]=T}get target(){return this[f]}get type(){return this[p]}}Object.defineProperty(y.prototype,"target",{enumerable:!0}),Object.defineProperty(y.prototype,"type",{enumerable:!0});class O extends y{constructor(T,x={}){super(T),this[s]=x.code===void 0?0:x.code,this[c]=x.reason===void 0?"":x.reason,this[v]=x.wasClean===void 0?!1:x.wasClean}get code(){return this[s]}get reason(){return this[c]}get wasClean(){return 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y({...U.perMessageDeflate,isServer:!1,maxPayload:U.maxPayload}),U.headers["Sec-WebSocket-Extensions"]=m({[y.extensionName]:St.offer()})),A.length){for(const te of A){if(typeof te!="string"||!Y.test(te)||pt.has(te))throw new SyntaxError("An invalid or duplicated subprotocol was specified");pt.add(te)}U.headers["Sec-WebSocket-Protocol"]=A.join(",")}if(U.origin&&(U.protocolVersion<13?U.headers["Sec-WebSocket-Origin"]=U.origin:U.headers.Origin=U.origin),(ne.username||ne.password)&&(U.auth=`${ne.username}:${ne.password}`),rt){const te=U.path.split(":");U.socketPath=te[0],U.path=te[1]}let Se;if(U.followRedirects){if(b._redirects===0){b._originalIpc=rt,b._originalSecure=nt,b._originalHostOrSocketPath=rt?U.socketPath:ne.host;const te=F&&F.headers;if(F={...F,headers:{}},te)for(const[Ee,it]of Object.entries(te))F.headers[Ee.toLowerCase()]=it}else if(b.listenerCount("redirect")===0){const te=rt?b._originalIpc?U.socketPath===b._originalHostOrSocketPath:!1:b._originalIpc?!1:ne.host===b._originalHostOrSocketPath;(!te||b._originalSecure&&!nt)&&(delete U.headers.authorization,delete U.headers.cookie,te||delete U.headers.host,U.auth=void 0)}U.auth&&!F.headers.authorization&&(F.headers.authorization="Basic "+Buffer.from(U.auth).toString("base64")),Se=b._req=jr(U),b._redirects&&b.emit("redirect",b.url,Se)}else Se=b._req=jr(U);U.timeout&&Se.on("timeout",()=>{be(b,Se,"Opening handshake has timed out")}),Se.on("error",te=>{Se===null||Se[G]||(Se=b._req=null,Ne(b,te))}),Se.on("response",te=>{const Ee=te.headers.location,it=te.statusCode;if(Ee&&U.followRedirects&&it>=300&&it<400){if(++b._redirects>U.maxRedirects){be(b,Se,"Maximum redirects exceeded");return}Se.abort();let gt;try{gt=new v(Ee,D)}catch{const gn=new SyntaxError(`Invalid URL: ${Ee}`);Ne(b,gn);return}je(b,gt,A,F)}else b.emit("unexpected-response",Se,te)||be(b,Se,`Unexpected server response: ${te.statusCode}`)}),Se.on("upgrade",(te,Ee,it)=>{if(b.emit("upgrade",te),b.readyState!==j.CONNECTING)return;Se=b._req=null;const gt=te.headers.upgrade;if(gt===void 0||gt.toLowerCase()!=="websocket"){be(b,Ee,"Invalid Upgrade header");return}const gn=c("sha1").update($r+x).digest("base64");if(te.headers["sec-websocket-accept"]!==gn){be(b,Ee,"Invalid Sec-WebSocket-Accept header");return}const Mt=te.headers["sec-websocket-protocol"];let vt;if(Mt!==void 0?pt.size?pt.has(Mt)||(vt="Server sent an invalid subprotocol"):vt="Server sent a subprotocol but none was requested":pt.size&&(vt="Server sent no subprotocol"),vt){be(b,Ee,vt);return}Mt&&(b._protocol=Mt);const Fr=te.headers["sec-websocket-extensions"];if(Fr!==void 0){if(!St){be(b,Ee,"Server sent a Sec-WebSocket-Extensions header but no extension was requested");return}let vn;try{vn=E(Fr)}catch{be(b,Ee,"Invalid Sec-WebSocket-Extensions header");return}const Wr=Object.keys(vn);if(Wr.length!==1||Wr[0]!==y.extensionName){be(b,Ee,"Server indicated an extension that was not requested");return}try{St.accept(vn[y.extensionName])}catch{be(b,Ee,"Invalid Sec-WebSocket-Extensions header");return}b._extensions[y.extensionName]=St}b.setSocket(Ee,it,{allowSynchronousEvents:U.allowSynchronousEvents,generateMask:U.generateMask,maxBufferedChunks:U.maxBufferedChunks,maxFragments:U.maxFragments,maxPayload:U.maxPayload,skipUTF8Validation:U.skipUTF8Validation})}),U.finishRequest?U.finishRequest(Se,b):Se.end()}function Ne(b,D){b._readyState=j.CLOSING,b._errorEmitted=!0,b.emit("error",D),b.emitClose()}function mn(b){return b.path=b.socketPath,i.connect(b)}function pn(b){return b.path=void 0,!b.servername&&b.servername!==""&&(b.servername=i.isIP(b.host)?"":b.host),a.connect(b)}function be(b,D,A){b._readyState=j.CLOSING;const F=new Error(A);Error.captureStackTrace(F,be),D.setHeader?(D[G]=!0,D.abort(),D.socket&&!D.socket.destroyed&&D.socket.destroy(),process.nextTick(Ne,b,F)):(D.destroy(F),D.once("error",b.emit.bind(b,"error")),D.once("close",b.emitClose.bind(b)))}function Sn(b,D,A){if(D){const F=S(D)?D.size:B(D).length;b._socket?b._sender._bufferedBytes+=F:b._bufferedAmount+=F}if(A){const F=new Error(`WebSocket is not open: readyState ${b.readyState} (${J[b.readyState]})`);process.nextTick(A,F)}}function mo(b,D){const A=this[o];A._closeFrameReceived=!0,A._closeMessage=D,A._closeCode=b,A._socket[o]!==void 0&&(A._socket.removeListener("data",Bt),process.nextTick(Br,A._socket),b===1005?A.close():A.close(b,D))}function po(){const b=this[o];b.isPaused||b._socket.resume()}function So(b){const D=this[o];D._socket[o]!==void 0&&(D._socket.removeListener("data",Bt),process.nextTick(Br,D._socket),D.close(b[R])),D._errorEmitted||(D._errorEmitted=!0,D.emit("error",b))}function Pr(){this[o].emitClose()}function go(b,D){this[o].emit("message",b,D)}function vo(b){const D=this[o];D._autoPong&&D.pong(b,!this._isServer,h),D.emit("ping",b)}function wo(b){this[o].emit("pong",b)}function Br(b){b.resume()}function yo(b){const D=this[o];D.readyState!==j.CLOSED&&(D.readyState===j.OPEN&&(D._readyState=j.CLOSING,Mr(D)),this._socket.end(),D._errorEmitted||(D._errorEmitted=!0,D.emit("error",b)))}function Mr(b){b._closeTimer=setTimeout(b._socket.destroy.bind(b._socket),b._closeTimeout)}function Nr(){const b=this[o];if(this.removeListener("close",Nr),this.removeListener("data",Bt),this.removeListener("end",Ur),b._readyState=j.CLOSING,!this._readableState.endEmitted&&!b._closeFrameReceived&&!b._receiver._writableState.errorEmitted&&this._readableState.length!==0){const D=this.read(this._readableState.length);b._receiver.write(D)}b._receiver.end(),this[o]=void 0,clearTimeout(b._closeTimer),b._receiver._writableState.finished||b._receiver._writableState.errorEmitted?b.emitClose():(b._receiver.on("error",Pr),b._receiver.on("finish",Pr))}function Bt(b){this[o]._receiver.write(b)||this.pause()}function Ur(){const b=this[o];b._readyState=j.CLOSING,b._receiver.end(),this.end()}function Rr(){const b=this[o];this.removeListener("error",Rr),this.on("error",h),b&&(b._readyState=j.CLOSING,this.destroy())}return Zt}var tn,cr;function os(){if(cr)return tn;cr=1,en();const{Duplex:e}=fe;function t(d){d.emit("close")}function s(){!this.destroyed&&this._writableState.finished&&this.destroy()}function i(d){this.removeListener("error",i),this.destroy(),this.listenerCount("error")===0&&this.emit("error",d)}function a(d,c){let f=!0;const p=new e({...c,autoDestroy:!1,emitClose:!1,objectMode:!1,writableObjectMode:!1});return d.on("message",function(v,y){const O=!y&&p._readableState.objectMode?v.toString():v;p.push(O)||d.pause()}),d.once("error",function(v){p.destroyed||(f=!1,p.destroy(v))}),d.once("close",function(){p.destroyed||p.push(null)}),p._destroy=function(v,y){if(d.readyState===d.CLOSED){y(v),process.nextTick(t,p);return}let O=!1;d.once("error",function(I){O=!0,y(I)}),d.once("close",function(){O||y(v),process.nextTick(t,p)}),f&&d.terminate()},p._final=function(v){if(d.readyState===d.CONNECTING){d.once("open",function(){p._final(v)});return}d._socket!==null&&(d._socket._writableState.finished?(v(),p._readableState.endEmitted&&p.destroy()):(d._socket.once("finish",function(){v()}),d.close()))},p._read=function(){d.isPaused&&d.resume()},p._write=function(v,y,O){if(d.readyState===d.CONNECTING){d.once("open",function(){p._write(v,y,O)});return}d.send(v,O)},p.on("end",s),p.on("error",i),p}return tn=a,tn}var nn,lr;function dr(){if(lr)return nn;lr=1;const{tokenChars:e}=ft();function t(s){const i=new Set;let a=-1,d=-1,c=0;for(c;c<s.length;c++){const p=s.charCodeAt(c);if(d===-1&&e[p]===1)a===-1&&(a=c);else if(c!==0&&(p===32||p===9))d===-1&&a!==-1&&(d=c);else if(p===44){if(a===-1)throw new SyntaxError(`Unexpected character at index ${c}`);d===-1&&(d=c);const v=s.slice(a,d);if(i.has(v))throw new SyntaxError(`The "${v}" subprotocol is duplicated`);i.add(v),a=d=-1}else throw new SyntaxError(`Unexpected character at index ${c}`)}if(a===-1||d!==-1)throw new SyntaxError("Unexpected end of input");const f=s.slice(a,c);if(i.has(f))throw new SyntaxError(`The "${f}" subprotocol is duplicated`);return i.add(f),i}return nn={parse:t},nn}var rn,hr;function as(){if(hr)return rn;hr=1;const e=ae,t=ue,{Duplex:s}=fe,{createHash:i}=pe,a=Yt(),d=ut(),c=dr(),f=en(),{CLOSE_TIMEOUT:p,GUID:v,kWebSocket:y}=$e(),O=/^[+/0-9A-Za-z]{22}==$/,I=0,S=1,w=2;class k extends e{constructor(h,n){if(super(),h={allowSynchronousEvents:!0,autoPong:!0,maxBufferedChunks:262144,maxFragments:16384,maxPayload:104857600,skipUTF8Validation:!1,perMessageDeflate:!1,handleProtocols:null,clientTracking:!0,closeTimeout:p,verifyClient:null,noServer:!1,backlog:null,server:null,host:null,path:null,port:null,WebSocket:f,...h},h.port==null&&!h.server&&!h.noServer||h.port!=null&&(h.server||h.noServer)||h.server&&h.noServer)throw new TypeError('One and only one of the "port", "server", or "noServer" options must be specified');if(h.port!=null?(this._server=t.createServer((l,m)=>{const E=t.STATUS_CODES[426];m.writeHead(426,{"Content-Length":E.length,"Content-Type":"text/plain"}),m.end(E)}),this._server.listen(h.port,h.host,h.backlog,n)):h.server&&(this._server=h.server),this._server){const l=this.emit.bind(this,"connection");this._removeListeners=T(this._server,{listening:this.emit.bind(this,"listening"),error:this.emit.bind(this,"error"),upgrade:(m,E,B)=>{this.handleUpgrade(m,E,B,l)}})}h.perMessageDeflate===!0&&(h.perMessageDeflate={}),h.clientTracking&&(this.clients=new Set,this._shouldEmitClose=!1),this.options=h,this._state=I}address(){if(this.options.noServer)throw new Error('The server is operating in "noServer" mode');return this._server?this._server.address():null}close(h){if(this._state===w){h&&this.once("close",()=>{h(new Error("The server is not running"))}),process.nextTick(x,this);return}if(h&&this.once("close",h),this._state!==S)if(this._state=S,this.options.noServer||this.options.server)this._server&&(this._removeListeners(),this._removeListeners=this._server=null),this.clients?this.clients.size?this._shouldEmitClose=!0:process.nextTick(x,this):process.nextTick(x,this);else{const n=this._server;this._removeListeners(),this._removeListeners=this._server=null,n.close(()=>{x(this)})}}shouldHandle(h){if(this.options.path){const n=h.url.indexOf("?");if((n!==-1?h.url.slice(0,n):h.url)!==this.options.path)return!1}return!0}handleUpgrade(h,n,l,m){n.on("error",C);const E=h.headers["sec-websocket-key"],B=h.headers.upgrade,G=+h.headers["sec-websocket-version"];if(h.method!=="GET"){R(this,h,n,405,"Invalid HTTP method");return}if(B===void 0||B.toLowerCase()!=="websocket"){R(this,h,n,400,"Invalid Upgrade header");return}if(E===void 0||!O.test(E)){R(this,h,n,400,"Missing or invalid Sec-WebSocket-Key header");return}if(G!==13&&G!==8){R(this,h,n,400,"Missing or invalid Sec-WebSocket-Version header",{"Sec-WebSocket-Version":"13, 8"});return}if(!this.shouldHandle(h)){P(n,400);return}const K=h.headers["sec-websocket-protocol"];let J=new Set;if(K!==void 0)try{J=c.parse(K)}catch{R(this,h,n,400,"Invalid Sec-WebSocket-Protocol header");return}const Y=h.headers["sec-websocket-extensions"],j={};if(this.options.perMessageDeflate&&Y!==void 0){const je=new d({...this.options.perMessageDeflate,isServer:!0,maxPayload:this.options.maxPayload});try{const Ne=a.parse(Y);Ne[d.extensionName]&&(je.accept(Ne[d.extensionName]),j[d.extensionName]=je)}catch{R(this,h,n,400,"Invalid or unacceptable Sec-WebSocket-Extensions header");return}}if(this.options.verifyClient){const je={origin:h.headers[`${G===8?"sec-websocket-origin":"origin"}`],secure:!!(h.socket.authorized||h.socket.encrypted),req:h};if(this.options.verifyClient.length===2){this.options.verifyClient(je,(Ne,mn,pn,be)=>{if(!Ne)return P(n,mn||401,pn,be);this.completeUpgrade(j,E,J,h,n,l,m)});return}if(!this.options.verifyClient(je))return P(n,401)}this.completeUpgrade(j,E,J,h,n,l,m)}completeUpgrade(h,n,l,m,E,B,G){if(!E.readable||!E.writable)return E.destroy();if(E[y])throw new Error("server.handleUpgrade() was called more than once with the same socket, possibly due to a misconfiguration");if(this._state>I)return P(E,503);const K=["HTTP/1.1 101 Switching Protocols","Upgrade: websocket","Connection: Upgrade",`Sec-WebSocket-Accept: ${i("sha1").update(n+v).digest("base64")}`],J=new this.options.WebSocket(null,void 0,this.options);if(l.size){const Y=this.options.handleProtocols?this.options.handleProtocols(l,m):l.values().next().value;Y&&(K.push(`Sec-WebSocket-Protocol: ${Y}`),J._protocol=Y)}if(h[d.extensionName]){const Y=h[d.extensionName].params,j=a.format({[d.extensionName]:[Y]});K.push(`Sec-WebSocket-Extensions: ${j}`),J._extensions=h}this.emit("headers",K,m),E.write(K.concat(`\r
+"use strict";Object.defineProperties(exports,{__esModule:{value:!0},[Symbol.toStringTag]:{value:"Module"}});const X=require("solid-js/web"),re=require("solid-js"),Et=require("@opencode/plugin/gui"),Ma=require("@opencode/schema/rpc"),f=require("effect"),Ra=8*1024*1024,Ke=f.Schema.optional,Le=f.Schema.String.check(f.Schema.isMaxLength(2048)),zr=f.Schema.String.check(f.Schema.isMaxLength(1e5)),Lt=f.Schema.Int.check(f.Schema.isGreaterThanOrEqualTo(0)),Hr=f.Schema.Int.check(f.Schema.isBetween({minimum:0,maximum:1e6})),Je=f.Schema.Literals(["ios","android"]).annotate({identifier:"Device.Platform"}),ja=f.Schema.Literals(["shutdown","booting","booted","unavailable"]).annotate({identifier:"Device.DeviceState"}),Ua=f.Schema.Literals(["available","owned-by-this-host","owned-by-other","unknown"]).annotate({identifier:"Device.Ownership"}),Kr=f.Schema.Literals(["apps","launch","install","snapshot","press","fill","swipe","key","screenshot","stream"]).annotate({identifier:"Device.Capability"}),$a=f.Schema.Literals(["home","back","recents","lock","volumeUp","volumeDown"]).annotate({identifier:"Device.NavigationKey"}),In=Lt.annotate({identifier:"Device.Generation"}),Dn=f.Schema.String.check(f.Schema.isPattern(/^dh_[a-f0-9-]{36}$/u)).pipe(f.Schema.brand("Device.HandleToken")).annotate({identifier:"Device.HandleToken"}),Oe=f.Schema.Struct({token:Dn,platform:Je,deviceId:Le,generation:In}).annotate({identifier:"Device.DeviceHandle"}),ni=f.Schema.String.check(f.Schema.isPattern(/^@?e[1-9][0-9]*$/u)).pipe(f.Schema.brand("Device.ElementRef")).annotate({identifier:"Device.ElementRef"}),Jr=f.Schema.Struct({token:Dn,generation:In,revision:Lt,ref:ni}).annotate({identifier:"Device.SnapshotReference"}),Fa=f.Schema.Struct({ref:Ke(ni),role:Le,name:Ke(zr),value:Ke(zr),enabled:Ke(f.Schema.Boolean),focused:Ke(f.Schema.Boolean)}).annotate({identifier:"Device.AccessibilityNode"}),Wa=f.Schema.Struct({token:Dn,generation:In,revision:Lt,interactiveOnly:f.Schema.Boolean,complete:f.Schema.Boolean,nodes:f.Schema.Array(Fa)}).annotate({identifier:"Device.Snapshot"}),xn=f.Schema.Struct({x:Hr,y:Hr}).annotate({identifier:"Device.LogicalPoint"}),Va=f.Schema.Struct({id:Le,name:Le,platform:Je,osVersion:Ke(Le),state:ja,ownership:Ua}).annotate({identifier:"Device.DeviceInfo"}),Ga=f.Schema.Struct({supported:f.Schema.Array(Kr),unsupported:f.Schema.Array(f.Schema.Struct({capability:Kr,reason:Le}))}).annotate({identifier:"Device.Capabilities"}),qa=f.Schema.Struct({id:Le,name:Ke(Le)}).annotate({identifier:"Device.AppInfo"}),za=f.Schema.Struct({app:Le,state:f.Schema.Literals(["launched","foreground","unknown"])}).annotate({identifier:"Device.LaunchResult"}),Ha=f.Schema.Struct({installed:f.Schema.Boolean,app:Ke(Le)}).annotate({identifier:"Device.InstallResult"}),Ka=f.Schema.Struct({data:f.Schema.Uint8ArrayFromBase64.check(f.Schema.isMaxLength(Ra)),width:Lt,height:Lt,deviceId:Le,platform:Je}).annotate({identifier:"Device.Screenshot"}),Ja=f.Schema.Literals(["mjpeg","h264"]).annotate({identifier:"Device.StreamProtocol"}),Xa=f.Schema.Struct({platform:Je,deviceId:Le,baseUrl:Le,token:Le,protocol:Ja,loopback:f.Schema.Literal(!0)}).annotate({identifier:"Device.StreamDescriptor"}),Ya=f.Schema.Literals(["missing-prerequisite","permission-denied","device-busy","detached","stale-reference","unsupported","not-found","invalid-artifact","timeout","helper-failed","internal"]).annotate({identifier:"Device.DeviceErrorCode"}),Tn=f.Schema.Struct({code:Ya,message:Le,mayHaveExecuted:f.Schema.Boolean}).annotate({identifier:"Device.DeviceError"}),st=f.Schema.optional,je=f.Schema.String.check(f.Schema.isMaxLength(2048)),ri=je.check(f.Schema.isMinLength(1)),Ln={sessionID:ri,connectionID:f.Schema.String},Xr={...Ln,requestID:f.Schema.String},Yr=f.Schema.Number.check(f.Schema.isInt(),f.Schema.isBetween({minimum:1,maximum:1e6})),Qr=f.Schema.optional(f.Schema.Struct({width:Yr,height:Yr})),ct=f.Schema.Struct({sessionID:ri,serverID:je,location:f.Schema.optionalKey(f.Schema.Struct({directory:je}))}),zt=f.Schema.Struct({handle:Oe,selection:f.Schema.optionalKey(f.Schema.Struct({platform:Je,deviceId:je})),capabilities:Ga,agentAccess:f.Schema.Boolean}).annotate({identifier:"DeviceBridge.Attachment"}),ii=f.Schema.Union([f.Schema.Struct({type:f.Schema.Literal("list"),platform:st(Je)}),f.Schema.Struct({type:f.Schema.Literal("state")}),f.Schema.Struct({type:f.Schema.Literal("open"),platform:Je,deviceId:je,boot:st(f.Schema.Boolean)}),f.Schema.Struct({type:f.Schema.Literal("apps"),handle:Oe}),f.Schema.Struct({type:f.Schema.Literal("launch"),handle:Oe,app:je,deepLink:st(je),relaunch:st(f.Schema.Boolean)}),f.Schema.Struct({type:f.Schema.Literal("install"),handle:Oe,artifactPath:je}),f.Schema.Struct({type:f.Schema.Literal("snapshot"),handle:Oe,interactiveOnly:st(f.Schema.Boolean)}),f.Schema.Struct({type:f.Schema.Literal("press"),handle:Oe,reference:Jr}),f.Schema.Struct({type:f.Schema.Literal("tap"),handle:Oe,point:xn,viewport:Qr}),f.Schema.Struct({type:f.Schema.Literal("fill"),handle:Oe,reference:Jr,text:je}),f.Schema.Struct({type:f.Schema.Literal("swipe"),handle:Oe,from:xn,to:xn,viewport:Qr}),f.Schema.Struct({type:f.Schema.Literal("key"),handle:Oe,key:$a}),f.Schema.Struct({type:f.Schema.Literal("screenshot"),handle:Oe}),f.Schema.Struct({type:f.Schema.Literal("close"),handle:Oe,shutdown:st(f.Schema.Boolean)})]).pipe(f.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Operation"}),Qa=f.Schema.Union([f.Schema.Struct({type:f.Schema.Literal("devices"),devices:f.Schema.Array(Va)}),f.Schema.Struct({type:f.Schema.Literal("state"),state:f.Schema.NullOr(zt)}),f.Schema.Struct({type:f.Schema.Literal("attachment"),attachment:zt}),f.Schema.Struct({type:f.Schema.Literal("apps"),apps:f.Schema.Array(qa)}),f.Schema.Struct({type:f.Schema.Literal("launch"),result:za}),f.Schema.Struct({type:f.Schema.Literal("install"),result:Ha}),f.Schema.Struct({type:f.Schema.Literal("snapshot"),snapshot:Wa}),f.Schema.Struct({type:f.Schema.Literal("screenshot"),screenshot:Ka}),f.Schema.Struct({type:f.Schema.Literal("done")})]).pipe(f.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Value"}),qt=f.Schema.Union([f.Schema.Struct({type:f.Schema.Literal("success"),value:Qa}),f.Schema.Struct({type:f.Schema.Literal("failure"),error:Tn})]).pipe(f.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Outcome"}),Za=f.Schema.Union([f.Schema.Struct({type:f.Schema.Literal("success"),stream:Xa}),f.Schema.Struct({type:f.Schema.Literal("failure"),error:Tn})]).pipe(f.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.StreamOutcome"}),es=f.Schema.Union([f.Schema.Struct({type:f.Schema.Literal("attached"),connectionID:f.Schema.String,version:f.Schema.Literal(1)}),f.Schema.Struct({type:f.Schema.Literal("command"),connectionID:f.Schema.String,requestID:f.Schema.String}),f.Schema.Struct({type:f.Schema.Literal("cancel"),connectionID:f.Schema.String,requestID:f.Schema.String})]).pipe(f.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Control"}),Me=f.Schema.toStandardSchemaV1,Gt={unavailable:Me(Tn)};Ma.Rpc.define({id:"device.control",methods:{attach:{input:Me(f.Schema.Struct({...Ln,version:f.Schema.Literal(1)})),output:Me(f.Schema.Literals(["closed","replaced"])),errors:Gt},state:{input:Me(f.Schema.Struct({...Ln,state:f.Schema.NullOr(zt)})),output:Me(f.Schema.Void),errors:Gt},command:{input:Me(f.Schema.Struct(Xr)),output:Me(ii),errors:Gt},result:{input:Me(f.Schema.Struct({...Xr,outcome:qt})),output:Me(f.Schema.Void),errors:Gt}},events:{control:{schema:Me(es)}}});const Zr=f.Schema.String.check(f.Schema.isMaxLength(2048)),ts=Et.Ipc.define({id:"demul.device.bridge.v2",state:f.Schema.Array(f.Schema.Struct({scope:ct,state:f.Schema.NullOr(zt)})),methods:{connect:{input:ct},disconnect:{input:ct},list:{input:f.Schema.Struct({platform:f.Schema.optional(Je),serverID:Zr,sessionID:f.Schema.optionalKey(Zr)}),output:qt},access:{input:f.Schema.Struct({scope:ct,enabled:f.Schema.Boolean}),output:qt},manual:{input:f.Schema.Struct({scope:ct,operation:ii}),output:qt},stream:{input:f.Schema.Struct({scope:ct,handle:Oe}),output:Za}}});function ei(h){let I;return{async run(E,A){I?.abort();const H=new AbortController;I=H,h.pending(!0);try{const n=await E(H.signal);I===H&&A(n)}catch(n){I===H&&!H.signal.aborted&&h.error(n)}finally{I===H&&(I=void 0,h.pending(!1))}},cancel(){I?.abort(),I=void 0,h.pending(!1)}}}function ns(h,I,E,A){if(!(!h||h!==I||E!=="playing"||!Number.isSafeInteger(A.width)||!Number.isSafeInteger(A.height)||A.width<=0||A.height<=0))return{token:h,width:A.width,height:A.height}}function rs(h,I){return!!I&&h.token===I.token&&h.width===I.width&&h.height===I.height}const is=1397050709,os={1:16,2:24},oi=16*1024*1024;function as(h){let I=!1,E;const A=()=>{try{return h.stream.protocol==="h264"?ms(h):gs(h)}catch(ee){return h.onState("paused"),h.onError(ee instanceof Error?ee.message:String(ee)),()=>{}}},H=()=>{const ee=I&&document.visibilityState==="visible";if(ee&&!E){E=A();return}ee||!E||(E(),E=void 0,h.onState(I?"paused":"idle"))},n=()=>H();return document.addEventListener("visibilitychange",n),{active(ee){I=ee,H()},destroy(){I=!1,document.removeEventListener("visibilitychange",n),E?.(),E=void 0,h.canvas.width=0,h.canvas.height=0,h.onState("idle")}}}function ss(h){const I=new Uint8Array(h);if(I.byteLength<4)return;const E=new DataView(h);return E.getUint32(0)===is?cs(I,E):ai(I,performance.now()*1e3,!1)}function cs(h,I){if(h.byteLength<16)return;const E=os[I.getUint8(4)];if(!E||h.byteLength<=E)return;const A=I.getBigUint64(8);if(!(A>BigInt(Number.MAX_SAFE_INTEGER)))return ai(h.subarray(E),Number(A),(I.getUint8(5)&1)===1,E===24?Number(I.getBigUint64(16))/1e3:void 0)}function ai(h,I,E,A){const H=li(h,0);if(H===void 0||H>=h.byteLength)return;const n=ys(h);return{bytes:h,key:E||n.key,codec:n.codec,timestamp:I,serverTimestamp:A}}function ls(h,I,E){if(![h.left,h.top,h.width,h.height,I.width,I.height,E.x,E.y].every(Number.isFinite)||h.width<=0||h.height<=0||!ci(I))return;const A=Math.min(h.width/I.width,h.height/I.height),H=I.width*A,n=I.height*A,ee=E.x-h.left-(h.width-H)/2,q=E.y-h.top-(h.height-n)/2;if(!(ee<0||q<0||ee>=H||q>=n))return{x:Math.min(I.width-1,Math.floor(ee/A)),y:Math.min(I.height-1,Math.floor(q/A))}}function ds(h){if(!h||/[\r\n]/.test(h))return;const 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Z.$$click=()=>{ut()},X.insert(Z,X.createComponent(h.ui.Icon,{name:"refresh",size:"small"})),X.effect(()=>X.setAttribute(Z,"aria-busy",ye())),Z}}),null),X.insert(te,X.createComponent(h.ui.Tooltip,{get value(){return De()?.agentAccess?"Revoke agent access for this session":"Allow agent access for this session"},get children(){return X.createComponent(h.ui.Switch,{label:"Agent device access",hideLabel:!0,get checked(){return De()?.agentAccess??!1},get disabled(){return!De()},onChange:Z=>{Pt(()=>E.access({scope:Se(),enabled:Z}))}})}}),null),X.effect(Z=>{var ce=!!Qe(),Ge=We()?"visible":"hidden",Re=Be().length===0;return ce!==Z.e&&X.setAttribute(Y,"aria-busy",Z.e=ce),Ge!==Z.t&&X.setStyleProperty(Q,"visibility",Z.t=Ge),Re!==Z.a&&(xe.disabled=Z.a=Re),Z},{e:void 0,t:void 0,a:void 0}),X.effect(()=>xe.value=Be().find(Z=>Z.id===ue())?.id??""),$})()};h.add(Et.MenuItem,{menu:"session.panel",id:kt,title:"Device",icon:"monitor",run:()=>{const q=h.sessions.current();q&&h.layout.open(`${h.id}:${kt}:${crypto.randomUUID()}`,q,{tab:"select"})}}),h.add(Et.Panel,{id:kt,region:"side",wide:!0,mobile:{title:"Device",order:40,kind:"menu",icon:"monitor",cached:!0},list:q=>q.open.filter(K=>K===kt||K.startsWith(`${kt}:`)).map(K=>({id:K,title:"Device"})),render:q=>X.createComponent(ee,{get sessionID(){return q.session.id},get serverID(){return q.session.server.id},get location(){return q.session.location}})})},main(h){return Promise.resolve().then(()=>Cs).then(I=>I.default(h))}});function xt(h){return h instanceof Error?h.message:typeof h!="object"||h===null?String(h):"message"in h&&typeof h.message=="string"?h.message:"code"in h&&typeof h.code=="string"?h.code:String(h)}X.delegateEvents(["pointerdown","pointerup","click"]);function Bs(h){return(E=>{const A={exports:{}},H=A.exports;Object.defineProperties(H,{__esModule:{value:!0},[Symbol.toStringTag]:{value:"Module"}});const n=E("effect"),ee=E("@opencode/schema/rpc"),q=E("@opencode/plugin/gui"),K=E("node:fs/promises"),ae=E("node:os"),J=E("node:path"),ue=E("node:child_process"),me=E("node:string_decoder"),fe=E("node:net"),Ie=E("node:timers/promises"),Xe=E("events"),Be=E("https"),ne=E("http"),de=E("net"),ye=E("tls"),Ue=E("crypto"),ke=E("stream"),be=E("url"),_e=E("zlib"),$e=E("buffer"),Ze=E("util"),Fe=E("node:crypto"),Ht=E("node:events"),It=E("node:http"),lt=8*1024*1024,Ce=n.Schema.optional,pe=n.Schema.String.check(n.Schema.isMaxLength(2048)),Dt=n.Schema.String.check(n.Schema.isMaxLength(1e5)),Ye=n.Schema.Int.check(n.Schema.isGreaterThanOrEqualTo(0)),Tt=n.Schema.Int.check(n.Schema.isBetween({minimum:0,maximum:1e6})),Se=n.Schema.Literals(["ios","android"]).annotate({identifier:"Device.Platform"}),De=n.Schema.Literals(["shutdown","booting","booted","unavailable"]).annotate({identifier:"Device.DeviceState"}),et=n.Schema.Literals(["available","owned-by-this-host","owned-by-other","unknown"]).annotate({identifier:"Device.Ownership"}),Ot=n.Schema.Literals(["apps","launch","install","snapshot","press","fill","swipe","key","screenshot","stream"]).annotate({identifier:"Device.Capability"}),Kt=n.Schema.Literals(["home","back","recents","lock","volumeUp","volumeDown"]).annotate({identifier:"Device.NavigationKey"}),dt=Ye.annotate({identifier:"Device.Generation"}),Qe=n.Schema.String.check(n.Schema.isPattern(/^dh_[a-f0-9-]{36}$/u)).pipe(n.Schema.brand("Device.HandleToken")).annotate({identifier:"Device.HandleToken"}),ge=n.Schema.Struct({token:Qe,platform:Se,deviceId:pe,generation:dt}).annotate({identifier:"Device.DeviceHandle"}),We=n.Schema.String.check(n.Schema.isPattern(/^@?e[1-9][0-9]*$/u)).pipe(n.Schema.brand("Device.ElementRef")).annotate({identifier:"Device.ElementRef"}),tt=n.Schema.Struct({token:Qe,generation:dt,revision:Ye,ref:We}).annotate({identifier:"Device.SnapshotReference"}),Pt=n.Schema.Struct({ref:Ce(We),role:pe,name:Ce(Dt),value:Ce(Dt),enabled:Ce(n.Schema.Boolean),focused:Ce(n.Schema.Boolean)}).annotate({identifier:"Device.AccessibilityNode"}),Bt=n.Schema.Struct({token:Qe,generation:dt,revision:Ye,interactiveOnly:n.Schema.Boolean,complete:n.Schema.Boolean,nodes:n.Schema.Array(Pt)}).annotate({identifier:"Device.Snapshot"}),Ve=n.Schema.Struct({x:Tt,y:Tt}).annotate({identifier:"Device.LogicalPoint"}),ht=n.Schema.Struct({id:pe,name:pe,platform:Se,osVersion:Ce(pe),state:De,ownership:et}).annotate({identifier:"Device.DeviceInfo"}),ut=n.Schema.Struct({supported:n.Schema.Array(Ot),unsupported:n.Schema.Array(n.Schema.Struct({capability:Ot,reason:pe}))}).annotate({identifier:"Device.Capabilities"}),Jt=n.Schema.Struct({id:pe,name:Ce(pe)}).annotate({identifier:"Device.AppInfo"}),ft=n.Schema.Struct({app:pe,state:n.Schema.Literals(["launched","foreground","unknown"])}).annotate({identifier:"Device.LaunchResult"}),Ct=n.Schema.Struct({installed:n.Schema.Boolean,app:Ce(pe)}).annotate({identifier:"Device.InstallResult"}),At=n.Schema.Struct({data:n.Schema.Uint8ArrayFromBase64.check(n.Schema.isMaxLength(lt)),width:Ye,height:Ye,deviceId:pe,platform:Se}).annotate({identifier:"Device.Screenshot"}),Xt=n.Schema.Literals(["mjpeg","h264"]).annotate({identifier:"Device.StreamProtocol"}),Yt=n.Schema.Struct({platform:Se,deviceId:pe,baseUrl:pe,token:pe,protocol:Xt,loopback:n.Schema.Literal(!0)}).annotate({identifier:"Device.StreamDescriptor"}),$=n.Schema.Literals(["missing-prerequisite","permission-denied","device-busy","detached","stale-reference","unsupported","not-found","invalid-artifact","timeout","helper-failed","internal"]).annotate({identifier:"Device.DeviceErrorCode"});function Y(e,t){return e.token===t.token&&e.generation===t.generation&&e.platform===t.platform&&e.deviceId===t.deviceId}const Q=n.Schema.Struct({code:$,message:pe,mayHaveExecuted:n.Schema.Boolean}).annotate({identifier:"Device.DeviceError"}),te=n.Schema.optional,ie=n.Schema.String.check(n.Schema.isMaxLength(2048)),xe=ie.check(n.Schema.isMinLength(1)),Pe={sessionID:xe,connectionID:n.Schema.String},Z={...Pe,requestID:n.Schema.String},ce=n.Schema.Number.check(n.Schema.isInt(),n.Schema.isBetween({minimum:1,maximum:1e6})),Ge=n.Schema.optional(n.Schema.Struct({width:ce,height:ce})),Re=n.Schema.Struct({sessionID:xe,serverID:ie,location:n.Schema.optionalKey(n.Schema.Struct({directory:ie}))}),Nt=n.Schema.Struct({handle:ge,selection:n.Schema.optionalKey(n.Schema.Struct({platform:Se,deviceId:ie})),capabilities:ut,agentAccess:n.Schema.Boolean}).annotate({identifier:"DeviceBridge.Attachment"}),On=n.Schema.Union([n.Schema.Struct({type:n.Schema.Literal("list"),platform:te(Se)}),n.Schema.Struct({type:n.Schema.Literal("state")}),n.Schema.Struct({type:n.Schema.Literal("open"),platform:Se,deviceId:ie,boot:te(n.Schema.Boolean)}),n.Schema.Struct({type:n.Schema.Literal("apps"),handle:ge}),n.Schema.Struct({type:n.Schema.Literal("launch"),handle:ge,app:ie,deepLink:te(ie),relaunch:te(n.Schema.Boolean)}),n.Schema.Struct({type:n.Schema.Literal("install"),handle:ge,artifactPath:ie}),n.Schema.Struct({type:n.Schema.Literal("snapshot"),handle:ge,interactiveOnly:te(n.Schema.Boolean)}),n.Schema.Struct({type:n.Schema.Literal("press"),handle:ge,reference:tt}),n.Schema.Struct({type:n.Schema.Literal("tap"),handle:ge,point:Ve,viewport:Ge}),n.Schema.Struct({type:n.Schema.Literal("fill"),handle:ge,reference:tt,text:ie}),n.Schema.Struct({type:n.Schema.Literal("swipe"),handle:ge,from:Ve,to:Ve,viewport:Ge}),n.Schema.Struct({type:n.Schema.Literal("key"),handle:ge,key:Kt}),n.Schema.Struct({type:n.Schema.Literal("screenshot"),handle:ge}),n.Schema.Struct({type:n.Schema.Literal("close"),handle:ge,shutdown:te(n.Schema.Boolean)})]).pipe(n.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Operation"}),di=n.Schema.Union([n.Schema.Struct({type:n.Schema.Literal("devices"),devices:n.Schema.Array(ht)}),n.Schema.Struct({type:n.Schema.Literal("state"),state:n.Schema.NullOr(Nt)}),n.Schema.Struct({type:n.Schema.Literal("attachment"),attachment:Nt}),n.Schema.Struct({type:n.Schema.Literal("apps"),apps:n.Schema.Array(Jt)}),n.Schema.Struct({type:n.Schema.Literal("launch"),result:ft}),n.Schema.Struct({type:n.Schema.Literal("install"),result:Ct}),n.Schema.Struct({type:n.Schema.Literal("snapshot"),snapshot:Bt}),n.Schema.Struct({type:n.Schema.Literal("screenshot"),screenshot:At}),n.Schema.Struct({type:n.Schema.Literal("done")})]).pipe(n.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Value"}),pt=n.Schema.Union([n.Schema.Struct({type:n.Schema.Literal("success"),value:di}),n.Schema.Struct({type:n.Schema.Literal("failure"),error:Q})]).pipe(n.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Outcome"}),hi=n.Schema.Union([n.Schema.Struct({type:n.Schema.Literal("success"),stream:Yt}),n.Schema.Struct({type:n.Schema.Literal("failure"),error:Q})]).pipe(n.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.StreamOutcome"}),ui=n.Schema.Union([n.Schema.Struct({type:n.Schema.Literal("attached"),connectionID:n.Schema.String,version:n.Schema.Literal(1)}),n.Schema.Struct({type:n.Schema.Literal("command"),connectionID:n.Schema.String,requestID:n.Schema.String}),n.Schema.Struct({type:n.Schema.Literal("cancel"),connectionID:n.Schema.String,requestID:n.Schema.String})]).pipe(n.Schema.toTaggedUnion("type")).annotate({identifier:"DeviceBridge.Control"}),Ne=n.Schema.toStandardSchemaV1,Mt={unavailable:Ne(Q)},Qt=ee.Rpc.define({id:"device.control",methods:{attach:{input:Ne(n.Schema.Struct({...Pe,version:n.Schema.Literal(1)})),output:Ne(n.Schema.Literals(["closed","replaced"])),errors:Mt},state:{input:Ne(n.Schema.Struct({...Pe,state:n.Schema.NullOr(Nt)})),output:Ne(n.Schema.Void),errors:Mt},command:{input:Ne(n.Schema.Struct(Z)),output:Ne(On),errors:Mt},result:{input:Ne(n.Schema.Struct({...Z,outcome:pt})),output:Ne(n.Schema.Void),errors:Mt}},events:{control:{schema:Ne(ui)}}}),Pn=n.Schema.String.check(n.Schema.isMaxLength(2048)),fi=q.Ipc.define({id:"demul.device.bridge.v2",state:n.Schema.Array(n.Schema.Struct({scope:Re,state:n.Schema.NullOr(Nt)})),methods:{connect:{input:Re},disconnect:{input:Re},list:{input:n.Schema.Struct({platform:n.Schema.optional(Se),serverID:Pn,sessionID:n.Schema.optionalKey(Pn)}),output:pt},access:{input:n.Schema.Struct({scope:Re,enabled:n.Schema.Boolean}),output:pt},manual:{input:n.Schema.Struct({scope:Re,operation:On}),output:pt},stream:{input:n.Schema.Struct({scope:Re,handle:ge}),output:hi}}});class Bn extends Error{code;mayHaveExecuted;constructor(t){super(t.message),this.name="DeviceFailure",this.code=t.code,this.mayHaveExecuted=t.mayHaveExecuted}get data(){return{code:this.code,message:this.message,mayHaveExecuted:this.mayHaveExecuted}}}function U(e,t,r=!1){return new Bn({code:e,message:t,mayHaveExecuted:r})}function pi(e){return e instanceof Bn}function mi(e){const t=new Map,r=new Map,i=new Set,a=new Map,c=new Map,s=new Map,p=new Map,l=new Map;let v=!1;const w=u=>JSON.stringify([u.serverID,u.sessionID]),B=(u,k)=>JSON.stringify([u,k]),O=u=>({handle:u.device.handle,selection:{platform:u.selection.platform,deviceId:u.selection.deviceId},capabilities:u.device.capabilities,agentAccess:u.agentAccess}),m=u=>{if(v)throw U("detached","The device controller has stopped.");const k=t.get(w(u));if(!k)throw U("detached","Attach a device in the Device panel first.");if(k.closing)throw U("device-busy","This session is changing its device.");return k},S=(u,k,T)=>{const M=m(u),V=M.device.handle;if(!Y(V,k))throw U("permission-denied","This handle does not belong to this session's attached device.");if(T==="agent"&&!M.agentAccess)throw U("permission-denied","Enable agent access in the Device panel first.");return M},x=(u,k)=>{const T=w(u),M=(c.get(T)??Promise.resolve()).then(k),V=M.then(()=>{},()=>{});return c.set(T,V),V.then(()=>{c.get(T)===V&&c.delete(T)}),M},C=(u,k,T,M)=>{const V=w(u),j=B(k.platform,k.deviceId);s.get(V)?.abort();const le=new AbortController,he=AbortSignal.any([le.signal,...T?[T]:[]]);s.set(V,le);const St=[...p].filter(([,He])=>He.session===V&&He.device===j).map(([He])=>He),rt=Promise.all(St).then(()=>(he.throwIfAborted(),M(he))),ve=rt.then(()=>{},()=>{});return p.set(ve,{session:V,device:j}),ve.then(()=>{p.delete(ve),s.get(V)===le&&s.delete(V)}),rt},L=u=>{r.forEach((k,T)=>{k===u&&r.delete(T)})},N=async(u,k,T)=>{u.closing=!0;try{await u.pending,T?.throwIfAborted(),await e.close({handle:u.device.handle,...k?{shutdown:k}:{}}),L(u)}catch(M){throw u.closing=!1,M}},R=(u,k)=>{const T=N(k).then(()=>{l.delete(k)},()=>{});l.set(k,{session:w(u),pending:T})},W=async(u,k)=>{const T=r.get(B(k.platform,k.deviceId)),M=T&&l.get(T);!T||!M||M.session!==w(u)||(await M.pending,l.has(T)&&(await N(T),l.delete(T)))},g=async(u,k)=>{a.set(u,k),await e.close({handle:k.handle,shutdown:!0}),a.delete(u)},b=async u=>{try{await g(B(u.selection.platform,u.selection.deviceId),u.device)}finally{L(u)}},o=async(u,k)=>{const T=B(u.platform,u.deviceId);if(r.has(T)||i.has(T))throw U("device-busy","This device is controlled by another session.");i.add(T);try{const M=a.get(T)??await e.open(u,k),V=B(M.handle.platform,M.handle.deviceId);if(r.has(V))throw await e.close({handle:M.handle}),U("device-busy","This device is controlled by another session.");if(k?.aborted||v)throw await g(T,M),k?.throwIfAborted(),U("detached","The device controller has stopped.");const j={selection:u,device:M,pending:Promise.resolve(),agentAccess:!0,closing:!1};return a.delete(T),r.set(T,j),r.set(V,j),j}finally{i.delete(T)}},d=(u,k,T,M,V)=>{V?.throwIfAborted();const j=S(u,k,T),le=j.pending.then(()=>(V?.throwIfAborted(),S(u,k,T),M(j)));return j.pending=le.then(()=>{},()=>{}),le},y=async u=>{switch(u.type){case"apps":return{type:"apps",apps:await e.apps(u.handle)};case"snapshot":return{type:"snapshot",snapshot:await e.snapshot(u)};case"screenshot":return{type:"screenshot",screenshot:await e.screenshot(u.handle)}}},P=async u=>{switch(u.type){case"launch":return{type:"launch",result:await e.launch(u)};case"install":return{type:"install",result:await e.install(u)};case"press":await e.press(u);break;case"tap":await e.tap(u);break;case"fill":await e.fill(u);break;case"swipe":await e.swipe(u);break;case"key":await e.key(u)}return{type:"done"}};return{async list(u,k,T){if(v)throw U("detached","The device controller has stopped.");const M=k?t.get(w(k)):void 0,V=await e.list(u,T);return T?.throwIfAborted(),V.map(j=>{const le=B(j.platform,j.id),he=r.get(le);return he?{...j,ownership:he===M||k&&l.get(he)?.session===w(k)?"owned-by-this-host":"owned-by-other"}:i.has(le)?{...j,ownership:"owned-by-other"}:j})},state(u){const k=t.get(w(u));return k?O(k):null},access(u,k){const T=m(u);return T.agentAccess=k,O(T)},async open(u,k,T,M){if(M?.throwIfAborted(),v)throw U("detached","The device controller has stopped.");const V=t.get(w(u));if(V&&r.get(B(k.platform,k.deviceId))===V)return S(u,V.device.handle,T),T==="manual"&&s.get(w(u))?.abort(),O(V);if(T==="agent")throw U("permission-denied","Attach a device and enable agent access in the Device panel first.");return C(u,k,M,async j=>{await W(u,k),j.throwIfAborted();const le=await o(k,j);try{return await x(u,async()=>{j.throwIfAborted();const he=t.get(w(u));return le.agentAccess=he?.agentAccess??!0,t.set(w(u),le),he&&R(u,he),O(le)})}catch(he){throw await b(le),he}})},async stream(u,k){return d(u,k,"manual",T=>e.stream(T.device.handle))},async run(u,k,T,M){return d(u,k.handle,T,()=>{switch(k.type){case"apps":case"snapshot":case"screenshot":return y(k);default:return P(k)}},M)},async close(u,k,T,M){return M?.throwIfAborted(),S(u,k.handle,T),s.get(w(u))?.abort(),x(u,async()=>{M?.throwIfAborted();const V=S(u,k.handle,T);await N(V,k.shutdown,M),t.delete(w(u))})},async detach(u){return s.get(w(u))?.abort(),x(u,async()=>{const k=t.get(w(u));k&&(await N(k),t.delete(w(u)))})},async dispose(){v=!0;for(const u of s.values())u.abort();await Promise.all(p.keys()),await Promise.all(c.values()),await Promise.all([...l.values()].map(u=>u.pending)),await Promise.allSettled([...l.keys()].map(u=>N(u))),l.clear(),await Promise.all([...new Set(r.values())].map(u=>u.pending)),t.clear(),r.clear();for(const[u,k]of a)await e.close({handle:k.handle,shutdown:!0}),a.delete(u);await e.dispose()}}}function qe(e,t){return n.Schema.decodeUnknownOption(n.Schema.fromJsonString(e))(t)}const Cn=4*1024*1024;function Rt(e,t,r){const i=e+t;return i.length<=r?i:i.slice(i.length-r)}function Ee(e){if(e.signal?.aborted)return Promise.reject(e.signal.reason);const t=Math.max(0,e.maxBytes??Cn);return new Promise((r,i)=>{const a=ue.spawn(e.command,[...e.args],{cwd:e.cwd,env:e.env?{...process.env,...e.env}:process.env,stdio:["pipe","pipe","pipe"]}),c=An(t),s=An(t);let p=!1,l=!1;const v=setTimeout(()=>{p=!0,a.kill("SIGKILL")},e.timeoutMs),w=()=>a.kill("SIGKILL");e.signal?.addEventListener("abort",w,{once:!0});const B=O=>{l||(l=!0,clearTimeout(v),e.signal?.removeEventListener("abort",w),e.signal?.aborted?i(e.signal.reason):r({...O,stdout:c.text(),stderr:s.text()}))};a.stdout?.on("data",O=>c.append(O)),a.stderr?.on("data",O=>s.append(O)),a.on("error",O=>B({code:null,signal:null,timedOut:p,spawnError:O.message})),a.on("close",(O,m)=>B({code:O,signal:m,timedOut:p})),e.input!==void 0?a.stdin?.end(e.input):a.stdin?.end()})}function An(e){const t=[];let r=0;return{append(i){for(t.push(i),r+=i.byteLength;r>e;){const a=t[0],c=Math.min(a.byteLength,r-e);c===a.byteLength?t.shift():t[0]=a.subarray(c),r-=c}},text:()=>Buffer.concat(t,r).toString("utf8")}}const gi=2e3,Si=2e3,Nn=new WeakMap;function Mn(e,t=gi,r=Si){const i=Nn.get(e);if(i)return i;const a=(async()=>{try{e.stop("SIGTERM")}catch{}if(!await Rn(e,t)){try{e.stop("SIGKILL")}catch{}if(!await Rn(e,r))throw e.release?.(),U("timeout","The device helper did not exit after SIGTERM and SIGKILL within the cleanup deadline.")}})();return Nn.set(e,a),a}async function Rn(e,t){let r;try{return await Promise.race([e.exited.then(()=>!0,()=>!1),new Promise(i=>{r=setTimeout(()=>i(!1),t)})])}finally{clearTimeout(r)}}function jn(e){const t=ue.spawn(e.command,[...e.args],{cwd:e.cwd,env:e.env?{...process.env,...e.env}:process.env,stdio:["ignore","pipe","pipe"]});Un(t.stdout,e.onStdoutLine,e.maxBytes),Un(t.stderr,e.onStderrLine,e.maxBytes);const r=new Promise(i=>{t.on("error",a=>{e.onStderrLine?.(a.message),i({code:null,signal:null})}),t.on("close",(a,c)=>i({code:a,signal:c}))});return{pid:t.pid,exited:r,stop:(i="SIGTERM")=>{t.exitCode===null&&t.signalCode===null&&t.kill(i)},release:()=>{t.stdout?.destroy(),t.stderr?.destroy(),t.unref()}}}function Un(e,t,r=Cn){if(!e)return;if(!t){e.resume();return}let i="";const a=new me.StringDecoder("utf8");e.on("data",c=>{i+=a.write(c);let s=i.indexOf(`
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L=this.normalizeParams(L),this.params=this._isServer?this.acceptAsServer(L):this.acceptAsClient(L),this.params}cleanup(){if(this._inflate&&(this._inflate.close(),this._inflate=null),this._deflate){const L=this._deflate[l];this._deflate.close(),this._deflate=null,L&&L(new Error("The deflate stream was closed while data was being processed"))}}acceptAsServer(L){const N=this._options,R=L.find(W=>!(N.serverNoContextTakeover===!1&&W.server_no_context_takeover||W.server_max_window_bits&&(N.serverMaxWindowBits===!1||typeof N.serverMaxWindowBits=="number"&&N.serverMaxWindowBits>W.server_max_window_bits)||typeof N.clientMaxWindowBits=="number"&&(typeof W.client_max_window_bits=="number"?N.clientMaxWindowBits>W.client_max_window_bits:!W.client_max_window_bits)));if(!R)throw new Error("None of the extension offers can be accepted");return N.serverNoContextTakeover&&(R.server_no_context_takeover=!0),N.clientNoContextTakeover&&(R.client_no_context_takeover=!0),typeof N.serverMaxWindowBits=="number"&&(R.server_max_window_bits=N.serverMaxWindowBits),typeof N.clientMaxWindowBits=="number"?R.client_max_window_bits=N.clientMaxWindowBits:(R.client_max_window_bits===!0||N.clientMaxWindowBits===!1)&&delete R.client_max_window_bits,R}acceptAsClient(L){const N=L[0];if(this._options.clientNoContextTakeover===!1&&N.client_no_context_takeover)throw new Error('Unexpected parameter "client_no_context_takeover"');if(!N.client_max_window_bits)typeof this._options.clientMaxWindowBits=="number"&&(N.client_max_window_bits=this._options.clientMaxWindowBits);else if(this._options.clientMaxWindowBits===!1||typeof this._options.clientMaxWindowBits=="number"&&N.client_max_window_bits>this._options.clientMaxWindowBits)throw new Error('Unexpected or invalid parameter "client_max_window_bits"');return N}normalizeParams(L){return L.forEach(N=>{Object.keys(N).forEach(R=>{let W=N[R];if(W.length>1)throw new Error(`Parameter "${R}" must have only a single value`);if(W=W[0],R==="client_max_window_bits"){if(W!==!0){const g=+W;if(!Number.isInteger(g)||g<8||g>15)throw new TypeError(`Invalid value for parameter "${R}": ${W}`);W=g}else if(!this._isServer)throw new TypeError(`Invalid value for parameter "${R}": ${W}`)}else if(R==="server_max_window_bits"){const g=+W;if(!Number.isInteger(g)||g<8||g>15)throw new TypeError(`Invalid value for parameter "${R}": ${W}`);W=g}else if(R==="client_no_context_takeover"||R==="server_no_context_takeover"){if(W!==!0)throw new TypeError(`Invalid value for parameter "${R}": ${W}`)}else throw new Error(`Unknown parameter "${R}"`);N[R]=W})}),L}decompress(L,N,R){B.add(W=>{this._decompress(L,N,(g,b)=>{W(),R(g,b)})})}compress(L,N,R){B.add(W=>{this._compress(L,N,(g,b)=>{W(),R(g,b)})})}_decompress(L,N,R){const W=this._isServer?"client":"server";if(!this._inflate){const g=`${W}_max_window_bits`,b=typeof this.params[g]!="number"?e.Z_DEFAULT_WINDOWBITS:this.params[g];this._inflate=e.createInflateRaw({...this._options.zlibInflateOptions,windowBits:b}),this._inflate[s]=this,this._inflate[p]=0,this._inflate[v]=[],this._inflate.on("error",x),this._inflate.on("data",S)}this._inflate[l]=R,this._inflate.write(L),N&&this._inflate.write(c),this._inflate.flush(()=>{const g=this._inflate[w];if(g){this._inflate.close(),this._inflate=null,R(g);return}const b=t.concat(this._inflate[v],this._inflate[p]);this._inflate._readableState.endEmitted?(this._inflate.close(),this._inflate=null):(this._inflate[p]=0,this._inflate[v]=[],N&&this.params[`${W}_no_context_takeover`]&&this._inflate.reset()),R(null,b)})}_compress(L,N,R){const W=this._isServer?"server":"client";if(!this._deflate){const g=`${W}_max_window_bits`,b=typeof this.params[g]!="number"?e.Z_DEFAULT_WINDOWBITS:this.params[g];this._deflate=e.createDeflateRaw({...this._options.zlibDeflateOptions,windowBits:b}),this._deflate[p]=0,this._deflate[v]=[],this._deflate.on("data",m)}this._deflate[l]=R,this._deflate.write(L),this._deflate.flush(e.Z_SYNC_FLUSH,()=>{if(!this._deflate)return;let g=t.concat(this._deflate[v],this._deflate[p]);N&&(g=new a(g.buffer,g.byteOffset,g.length-4)),this._deflate[l]=null,this._deflate[p]=0,this._deflate[v]=[],N&&this.params[`${W}_no_context_takeover`]&&this._deflate.reset(),R(null,g)})}}nn=O;function m(C){this[v].push(C),this[p]+=C.length}function S(C){if(this[p]+=C.length,this[s]._maxPayload<1||this[p]<=this[s]._maxPayload){this[v].push(C);return}this[w]=new RangeError("Max payload size exceeded"),this[w].code="WS_ERR_UNSUPPORTED_MESSAGE_LENGTH",this[w][i]=1009,this.removeListener("data",S),this.reset()}function x(C){if(this[s]._inflate=null,this[w]){this[l](this[w]);return}C[i]=1007,this[l](C)}return nn}var $t={exports:{}},nr;function gt(){if(nr)return $t.exports;nr=1;const{isUtf8:e}=$e,{hasBlob:t}=ze(),r=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,1,1,0,0,1,1,0,1,1,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,0,1,0];function i(s){return s>=1e3&&s<=1014&&s!==1004&&s!==1005&&s!==1006||s>=3e3&&s<=4999}function a(s){const p=s.length;let l=0;for(;l<p;)if((s[l]&128)===0)l++;else if((s[l]&224)===192){if(l+1===p||(s[l+1]&192)!==128||(s[l]&254)===192)return!1;l+=2}else if((s[l]&240)===224){if(l+2>=p||(s[l+1]&192)!==128||(s[l+2]&192)!==128||s[l]===224&&(s[l+1]&224)===128||s[l]===237&&(s[l+1]&224)===160)return!1;l+=3}else if((s[l]&248)===240){if(l+3>=p||(s[l+1]&192)!==128||(s[l+2]&192)!==128||(s[l+3]&192)!==128||s[l]===240&&(s[l+1]&240)===128||s[l]===244&&s[l+1]>143||s[l]>244)return!1;l+=4}else return!1;return!0}function c(s){return t&&typeof s=="object"&&typeof s.arrayBuffer=="function"&&typeof s.type=="string"&&typeof s.stream=="function"&&(s[Symbol.toStringTag]==="Blob"||s[Symbol.toStringTag]==="File")}return $t.exports={isBlob:c,isValidStatusCode:i,isValidUTF8:a,tokenChars:r},e&&($t.exports.isValidUTF8=function(s){return s.length<24?a(s):e(s)}),$t.exports}var rn,rr;function ir(){if(rr)return rn;rr=1;const{Writable:e}=ke,t=mt(),{BINARY_TYPES:r,EMPTY_BUFFER:i,kStatusCode:a,kWebSocket:c}=ze(),{concat:s,toArrayBuffer:p,unmask:l}=Ut(),{isValidStatusCode:v,isValidUTF8:w}=gt(),B=Buffer[Symbol.species],O=0,m=1,S=2,x=3,C=4,L=5,N=6;class R extends e{constructor(g={}){super(),this._allowSynchronousEvents=g.allowSynchronousEvents!==void 0?g.allowSynchronousEvents:!0,this._binaryType=g.binaryType||r[0],this._extensions=g.extensions||{},this._isServer=!!g.isServer,this._maxBufferedChunks=g.maxBufferedChunks|0,this._maxFragments=g.maxFragments|0,this._maxPayload=g.maxPayload|0,this._skipUTF8Validation=!!g.skipUTF8Validation,this[c]=void 0,this._bufferedBytes=0,this._buffers=[],this._compressed=!1,this._payloadLength=0,this._mask=void 0,this._fragmented=0,this._masked=!1,this._fin=!1,this._opcode=0,this._totalPayloadLength=0,this._messageLength=0,this._numFragments=0,this._fragments=[],this._errored=!1,this._loop=!1,this._state=O}_write(g,b,o){if(this._opcode===8&&this._state==O)return o();if(this._maxBufferedChunks>0&&this._buffers.length>=this._maxBufferedChunks){o(this.createError(RangeError,"Too many buffered chunks",!1,1008,"WS_ERR_TOO_MANY_BUFFERED_PARTS"));return}this._bufferedBytes+=g.length,this._buffers.push(g),this.startLoop(o)}consume(g){if(this._bufferedBytes-=g,g===this._buffers[0].length)return this._buffers.shift();if(g<this._buffers[0].length){const o=this._buffers[0];return this._buffers[0]=new B(o.buffer,o.byteOffset+g,o.length-g),new B(o.buffer,o.byteOffset,g)}const b=Buffer.allocUnsafe(g);do{const o=this._buffers[0],d=b.length-g;g>=o.length?b.set(this._buffers.shift(),d):(b.set(new Uint8Array(o.buffer,o.byteOffset,g),d),this._buffers[0]=new B(o.buffer,o.byteOffset+g,o.length-g)),g-=o.length}while(g>0);return b}startLoop(g){this._loop=!0;do switch(this._state){case O:this.getInfo(g);break;case m:this.getPayloadLength16(g);break;case S:this.getPayloadLength64(g);break;case x:this.getMask();break;case C:this.getData(g);break;case L:case N:this._loop=!1;return}while(this._loop);this._errored||g()}getInfo(g){if(this._bufferedBytes<2){this._loop=!1;return}const b=this.consume(2);if((b[0]&48)!==0){const d=this.createError(RangeError,"RSV2 and RSV3 must be clear",!0,1002,"WS_ERR_UNEXPECTED_RSV_2_3");g(d);return}const o=(b[0]&64)===64;if(o&&!this._extensions[t.extensionName]){const d=this.createError(RangeError,"RSV1 must be clear",!0,1002,"WS_ERR_UNEXPECTED_RSV_1");g(d);return}if(this._fin=(b[0]&128)===128,this._opcode=b[0]&15,this._payloadLength=b[1]&127,this._opcode===0){if(o){const d=this.createError(RangeError,"RSV1 must be clear",!0,1002,"WS_ERR_UNEXPECTED_RSV_1");g(d);return}if(!this._fragmented){const d=this.createError(RangeError,"invalid opcode 0",!0,1002,"WS_ERR_INVALID_OPCODE");g(d);return}this._opcode=this._fragmented}else if(this._opcode===1||this._opcode===2){if(this._fragmented){const d=this.createError(RangeError,`invalid opcode ${this._opcode}`,!0,1002,"WS_ERR_INVALID_OPCODE");g(d);return}this._compressed=o}else if(this._opcode>7&&this._opcode<11){if(!this._fin){const d=this.createError(RangeError,"FIN must be set",!0,1002,"WS_ERR_EXPECTED_FIN");g(d);return}if(o){const d=this.createError(RangeError,"RSV1 must be clear",!0,1002,"WS_ERR_UNEXPECTED_RSV_1");g(d);return}if(this._payloadLength>125||this._opcode===8&&this._payloadLength===1){const d=this.createError(RangeError,`invalid payload length ${this._payloadLength}`,!0,1002,"WS_ERR_INVALID_CONTROL_PAYLOAD_LENGTH");g(d);return}}else{const d=this.createError(RangeError,`invalid opcode ${this._opcode}`,!0,1002,"WS_ERR_INVALID_OPCODE");g(d);return}if(!this._fin&&!this._fragmented&&(this._fragmented=this._opcode),this._masked=(b[1]&128)===128,this._isServer){if(!this._masked){const d=this.createError(RangeError,"MASK must be set",!0,1002,"WS_ERR_EXPECTED_MASK");g(d);return}}else if(this._masked){const d=this.createError(RangeError,"MASK must be clear",!0,1002,"WS_ERR_UNEXPECTED_MASK");g(d);return}this._payloadLength===126?this._state=m:this._payloadLength===127?this._state=S:this.haveLength(g)}getPayloadLength16(g){if(this._bufferedBytes<2){this._loop=!1;return}this._payloadLength=this.consume(2).readUInt16BE(0),this.haveLength(g)}getPayloadLength64(g){if(this._bufferedBytes<8){this._loop=!1;return}const b=this.consume(8),o=b.readUInt32BE(0);if(o>Math.pow(2,21)-1){const d=this.createError(RangeError,"Unsupported WebSocket frame: payload length > 2^53 - 1",!1,1009,"WS_ERR_UNSUPPORTED_DATA_PAYLOAD_LENGTH");g(d);return}this._payloadLength=o*Math.pow(2,32)+b.readUInt32BE(4),this.haveLength(g)}haveLength(g){if(this._payloadLength&&this._opcode<8&&(this._totalPayloadLength+=this._payloadLength,this._totalPayloadLength>this._maxPayload&&this._maxPayload>0)){const b=this.createError(RangeError,"Max payload size exceeded",!1,1009,"WS_ERR_UNSUPPORTED_MESSAGE_LENGTH");g(b);return}this._masked?this._state=x:this._state=C}getMask(){if(this._bufferedBytes<4){this._loop=!1;return}this._mask=this.consume(4),this._state=C}getData(g){let b=i;if(this._payloadLength){if(this._bufferedBytes<this._payloadLength){this._loop=!1;return}b=this.consume(this._payloadLength),this._masked&&(this._mask[0]|this._mask[1]|this._mask[2]|this._mask[3])!==0&&l(b,this._mask)}if(this._opcode>7){this.controlMessage(b,g);return}if(this._maxFragments>0&&++this._numFragments>this._maxFragments){const o=this.createError(RangeError,"Too many message fragments",!1,1008,"WS_ERR_TOO_MANY_BUFFERED_PARTS");g(o);return}if(this._compressed){this._state=L,this.decompress(b,g);return}b.length&&(this._messageLength=this._totalPayloadLength,this._fragments.push(b)),this.dataMessage(g)}decompress(g,b){this._extensions[t.extensionName].decompress(g,this._fin,(o,d)=>{if(o)return b(o);if(d.length){if(this._messageLength+=d.length,this._messageLength>this._maxPayload&&this._maxPayload>0){const y=this.createError(RangeError,"Max payload size exceeded",!1,1009,"WS_ERR_UNSUPPORTED_MESSAGE_LENGTH");b(y);return}this._fragments.push(d)}this.dataMessage(b),this._state===O&&this.startLoop(b)})}dataMessage(g){if(!this._fin){this._state=O;return}const b=this._messageLength,o=this._fragments;if(this._totalPayloadLength=0,this._messageLength=0,this._fragmented=0,this._numFragments=0,this._fragments=[],this._opcode===2){let d;this._binaryType==="nodebuffer"?d=s(o,b):this._binaryType==="arraybuffer"?d=p(s(o,b)):this._binaryType==="blob"?d=new Blob(o):d=o,this._allowSynchronousEvents?(this.emit("message",d,!0),this._state=O):(this._state=N,setImmediate(()=>{this.emit("message",d,!0),this._state=O,this.startLoop(g)}))}else{const d=s(o,b);if(!this._skipUTF8Validation&&!w(d)){const y=this.createError(Error,"invalid UTF-8 sequence",!0,1007,"WS_ERR_INVALID_UTF8");g(y);return}this._state===L||this._allowSynchronousEvents?(this.emit("message",d,!1),this._state=O):(this._state=N,setImmediate(()=>{this.emit("message",d,!1),this._state=O,this.startLoop(g)}))}}controlMessage(g,b){if(this._opcode===8){if(g.length===0)this._loop=!1,this.emit("conclude",1005,i),this.end();else{const o=g.readUInt16BE(0);if(!v(o)){const y=this.createError(RangeError,`invalid status code ${o}`,!0,1002,"WS_ERR_INVALID_CLOSE_CODE");b(y);return}const d=new B(g.buffer,g.byteOffset+2,g.length-2);if(!this._skipUTF8Validation&&!w(d)){const y=this.createError(Error,"invalid UTF-8 sequence",!0,1007,"WS_ERR_INVALID_UTF8");b(y);return}this._loop=!1,this.emit("conclude",o,d),this.end()}this._state=O;return}this._allowSynchronousEvents?(this.emit(this._opcode===9?"ping":"pong",g),this._state=O):(this._state=N,setImmediate(()=>{this.emit(this._opcode===9?"ping":"pong",g),this._state=O,this.startLoop(b)}))}createError(g,b,o,d,y){this._loop=!1,this._errored=!0;const P=new g(o?`Invalid WebSocket frame: ${b}`:b);return Error.captureStackTrace(P,this.createError),P.code=y,P[a]=d,P}}return rn=R,rn}var on,or;function ar(){if(or)return on;or=1;const{Duplex:e}=ke,{randomFillSync:t}=Ue,{types:{isUint8Array:r}}=Ze,i=mt(),{EMPTY_BUFFER:a,kWebSocket:c,NOOP:s}=ze(),{isBlob:p,isValidStatusCode:l}=gt(),{mask:v,toBuffer:w}=Ut(),B=Symbol("kByteLength"),O=Buffer.alloc(4),m=8*1024;let S,x=m;const C=0,L=1,N=2;class R{constructor(o,d,y){this._extensions=d||{},y&&(this._generateMask=y,this._maskBuffer=Buffer.alloc(4)),this._socket=o,this._firstFragment=!0,this._compress=!1,this._bufferedBytes=0,this._queue=[],this._state=C,this.onerror=s,this[c]=void 0}static frame(o,d){let y,P=!1,u=2,k=!1;d.mask&&(y=d.maskBuffer||O,d.generateMask?d.generateMask(y):(x===m&&(S===void 0&&(S=Buffer.alloc(m)),t(S,0,m),x=0),y[0]=S[x++],y[1]=S[x++],y[2]=S[x++],y[3]=S[x++]),k=(y[0]|y[1]|y[2]|y[3])===0,u=6);let T;typeof o=="string"?(!d.mask||k)&&d[B]!==void 0?T=d[B]:(o=Buffer.from(o),T=o.length):(T=o.length,P=d.mask&&d.readOnly&&!k);let M=T;T>=65536?(u+=8,M=127):T>125&&(u+=2,M=126);const V=Buffer.allocUnsafe(P?T+u:u);return V[0]=d.fin?d.opcode|128:d.opcode,d.rsv1&&(V[0]|=64),V[1]=M,M===126?V.writeUInt16BE(T,2):M===127&&(V[2]=V[3]=0,V.writeUIntBE(T,4,6)),d.mask?(V[1]|=128,V[u-4]=y[0],V[u-3]=y[1],V[u-2]=y[2],V[u-1]=y[3],k?[V,o]:P?(v(o,y,V,u,T),[V]):(v(o,y,o,0,T),[V,o])):[V,o]}close(o,d,y,P){let u;if(o===void 0)u=a;else{if(typeof o!="number"||!l(o))throw new TypeError("First argument must be a valid error code number");if(d===void 0||!d.length)u=Buffer.allocUnsafe(2),u.writeUInt16BE(o,0);else{const T=Buffer.byteLength(d);if(T>123)throw new RangeError("The message must not be greater than 123 bytes");if(u=Buffer.allocUnsafe(2+T),u.writeUInt16BE(o,0),typeof d=="string")u.write(d,2);else if(r(d))u.set(d,2);else throw new TypeError("Second argument must be a string or a Uint8Array")}}const k={[B]:u.length,fin:!0,generateMask:this._generateMask,mask:y,maskBuffer:this._maskBuffer,opcode:8,readOnly:!1,rsv1:!1};this._state!==C?this.enqueue([this.dispatch,u,!1,k,P]):this.sendFrame(R.frame(u,k),P)}ping(o,d,y){let P,u;if(typeof o=="string"?(P=Buffer.byteLength(o),u=!1):p(o)?(P=o.size,u=!1):(o=w(o),P=o.length,u=w.readOnly),P>125)throw new RangeError("The data size must not be greater than 125 bytes");const k={[B]:P,fin:!0,generateMask:this._generateMask,mask:d,maskBuffer:this._maskBuffer,opcode:9,readOnly:u,rsv1:!1};p(o)?this._state!==C?this.enqueue([this.getBlobData,o,!1,k,y]):this.getBlobData(o,!1,k,y):this._state!==C?this.enqueue([this.dispatch,o,!1,k,y]):this.sendFrame(R.frame(o,k),y)}pong(o,d,y){let P,u;if(typeof o=="string"?(P=Buffer.byteLength(o),u=!1):p(o)?(P=o.size,u=!1):(o=w(o),P=o.length,u=w.readOnly),P>125)throw new RangeError("The data size must not be greater than 125 bytes");const k={[B]:P,fin:!0,generateMask:this._generateMask,mask:d,maskBuffer:this._maskBuffer,opcode:10,readOnly:u,rsv1:!1};p(o)?this._state!==C?this.enqueue([this.getBlobData,o,!1,k,y]):this.getBlobData(o,!1,k,y):this._state!==C?this.enqueue([this.dispatch,o,!1,k,y]):this.sendFrame(R.frame(o,k),y)}send(o,d,y){const P=this._extensions[i.extensionName];let u=d.binary?2:1,k=d.compress,T,M;typeof o=="string"?(T=Buffer.byteLength(o),M=!1):p(o)?(T=o.size,M=!1):(o=w(o),T=o.length,M=w.readOnly),this._firstFragment?(this._firstFragment=!1,k&&P&&P.params[P._isServer?"server_no_context_takeover":"client_no_context_takeover"]&&(k=T>=P._threshold),this._compress=k):(k=!1,u=0),d.fin&&(this._firstFragment=!0);const V={[B]:T,fin:d.fin,generateMask:this._generateMask,mask:d.mask,maskBuffer:this._maskBuffer,opcode:u,readOnly:M,rsv1:k};p(o)?this._state!==C?this.enqueue([this.getBlobData,o,this._compress,V,y]):this.getBlobData(o,this._compress,V,y):this._state!==C?this.enqueue([this.dispatch,o,this._compress,V,y]):this.dispatch(o,this._compress,V,y)}getBlobData(o,d,y,P){this._bufferedBytes+=y[B],this._state=N,o.arrayBuffer().then(u=>{if(this._socket.destroyed){const T=new Error("The socket was closed while the blob was being read");process.nextTick(W,this,T,P);return}this._bufferedBytes-=y[B];const k=w(u);d?this.dispatch(k,d,y,P):(this._state=C,this.sendFrame(R.frame(k,y),P),this.dequeue())}).catch(u=>{process.nextTick(g,this,u,P)})}dispatch(o,d,y,P){if(!d){this.sendFrame(R.frame(o,y),P);return}const u=this._extensions[i.extensionName];this._bufferedBytes+=y[B],this._state=L,u.compress(o,y.fin,(k,T)=>{if(this._socket.destroyed){const M=new Error("The socket was closed while data was being compressed");W(this,M,P);return}this._bufferedBytes-=y[B],this._state=C,y.readOnly=!1,this.sendFrame(R.frame(T,y),P),this.dequeue()})}dequeue(){for(;this._state===C&&this._queue.length;){const o=this._queue.shift();this._bufferedBytes-=o[3][B],Reflect.apply(o[0],this,o.slice(1))}}enqueue(o){this._bufferedBytes+=o[3][B],this._queue.push(o)}sendFrame(o,d){o.length===2?(this._socket.cork(),this._socket.write(o[0]),this._socket.write(o[1],d),this._socket.uncork()):this._socket.write(o[0],d)}}on=R;function W(b,o,d){typeof d=="function"&&d(o);for(let y=0;y<b._queue.length;y++){const 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Promise((l,v)=>{p.once("error",v),p.listen(0,Sn,()=>{p.removeListener("error",v);const w=p.address();if(!w||typeof w=="string"){p.close(),v(new Error("The stream proxy did not bind a TCP port."));return}l({descriptor:{platform:e.platform,deviceId:e.deviceId,baseUrl:`http://${Sn}:${w.port}`,token:t,protocol:e.protocol,loopback:!0},stop:()=>ka(p,s,i,a,c)})})})}function Sa(e){const t=new URL(e.baseUrl).origin;if(e.protocol==="h264"){const i=new URL("/vendor/serve-emu/ws",t);return i.protocol=i.protocol==="https:"?"wss:":"ws:",i.searchParams.set("device",e.deviceId),i.searchParams.set("video","1"),i.searchParams.set("frame-meta","1"),{kind:"ws",url:i.toString(),subprotocol:`serve-emu.token.${e.token}`}}const r=new URL("/vendor/serve-sim/helper/stream.mjpeg",t);return r.searchParams.set("device",e.deviceId),{kind:"mjpeg",url:r.toString(),authorization:`Bearer ${e.token}`}}function vn(e,t){if(e!=="GET")return 405;const r=new URL(t??"/",`http://${Sn}`);if(r.pathname!==fa)return 404;for(const i of r.searchParams.keys())if(i!==pa)return 400}function va(e,t){const r=/^Bearer (.+)$/u.exec(e??"");return r?Br(r[1],t):!1}function ya(e,t){const r=ma+t;return xa(e).some(i=>Br(i,r))}async function wa(e,t,r){const i=new AbortController;r.add(i),t.on("close",()=>i.abort());let a;try{const c=await fetch(e.url,{method:"GET",headers:{authorization:e.authorization},redirect:"error",signal:i.signal});if(!c.ok||!c.body)return Ft(t,502);for(t.writeHead(200,{"content-type":c.headers.get("content-type")??"multipart/x-mixed-replace; boundary=frame","cache-control":"no-store"}),a=c.body.getReader();!i.signal.aborted;){const s=await a.read();if(s.done)break;s.value.byteLength&&!t.write(s.value)&&await Ht.once(t,"drain",{signal:i.signal})}}finally{r.delete(i),i.abort(),await a?.cancel().catch(()=>{}),t.destroyed||t.end()}}const ba=n.Schema.Struct({type:n.Schema.Literal("reset-video")});function _a(e,t,r){const i=new Ae.WebSocket(e.url,[e.subprotocol],{maxPayload:Or}),a=e.subprotocol.slice(16);let c=!1;r.add(t),r.add(i);const s=()=>{r.delete(t),r.delete(i),t.readyState!==Ae.WebSocket.CLOSED&&t.terminate(),i.readyState!==Ae.WebSocket.CLOSED&&i.terminate()};i.on("message",(p,l)=>{t.readyState===Ae.WebSocket.OPEN&&(l&&t.bufferedAmount>Or||t.send(l?p:Pr(p).replaceAll(a,"[redacted]"),{binary:l}))}),i.on("close",s),i.on("error",s),i.on("open",()=>{c&&i.send(JSON.stringify({type:"reset-video",ack:!1})),c=!1}),t.on("message",(p,l)=>{if(!(l||n.Schema.decodeUnknownOption(n.Schema.fromJsonString(ba))(Pr(p))._tag==="None")){if(i.readyState===Ae.WebSocket.CONNECTING){c=!0;return}i.readyState===Ae.WebSocket.OPEN&&i.send(JSON.stringify({type:"reset-video",ack:!1}))}}),t.on("close",s),t.on("error",s)}function Pr(e){return(Array.isArray(e)?Buffer.concat(e):Buffer.isBuffer(e)?e:Buffer.from(e)).toString("utf8")}async function ka(e,t,r,i,a){for(const c of i)c.abort();for(const c of r)c.destroyed||c.destroy();await Promise.all([...a].map(c=>new Promise(s=>{if(c.readyState===Ae.WebSocket.CLOSED)return s();c.once("close",()=>s()),c.terminate()}))),t&&await new Promise(c=>t.close(()=>c())),e.closeAllConnections(),await new Promise(c=>e.close(()=>c()))}function xa(e){return(Array.isArray(e)?e.join(","):e??"").split(",").map(t=>t.trim()).filter(Boolean)}function Br(e,t){const r=Buffer.from(e),i=Buffer.from(t);return r.length===i.length&&Fe.timingSafeEqual(r,i)}function Ft(e,t){e.writeHead(t).end()}function Ea(e,t){if(t)return Ft(e,t);e.writeHead(204,{"access-control-allow-origin":"*","access-control-allow-methods":"GET","access-control-allow-headers":"authorization","access-control-max-age":"600"}).end()}function La(e){e.writeHead(401,{"www-authenticate":"Bearer"}).end()}function Cr(e,t){const r=t===401?"Unauthorized":"Bad Request";e.write(`HTTP/1.1 ${t} ${r}\r
 Connection: close\r
 \r
-`),e.destroy()}function Cr(e=Js){return t=>{let s;const i=new Map,a=new Map,d=new AbortController;let c=!1;const f=n=>JSON.stringify([n.serverID,n.sessionID]),p=()=>s??=di(e()),v=n=>{if(!t.serverEndpoints.get(n)?.sameMachine)throw N("unsupported","Device control requires this desktop app's own local server.")},y=n=>({serverID:n.serverID,sessionID:n.sessionID}),O=(n,l)=>{v(n.serverID);const m=i.get(f(n));if(!m||m.closed||!m.windows.has(l))throw new Error("device.bridge.disconnected");return m},I=n=>n.windows.forEach(l=>h.changed(l)),S=async n=>{const l=n.proxy;n.proxy=void 0,await l?.pending.then(m=>m.stop()).catch(()=>{})},w=n=>{const l=n.reporting.then(async()=>{if(n.closed)return;const m=p().state(y(n));n.proxy&&n.proxy.token!==m?.handle.token&&await S(n),I(n),await t.client.rpc(zt).state({sessionID:n.sessionID,connectionID:n.connectionID,state:m},{signal:n.abort.signal,location:n.location})});return n.reporting=l.catch(()=>{}),l},k=async(n,l=!1)=>{const m=f(n);n.closed||i.get(m)!==n||(n.closed=!0,i.delete(m),n.stopEvents(),n.abort.abort(),n.requests.forEach(E=>E.abort()),await S(n),l&&await s?.detach(y(n)),s?.state(y(n))||a.delete(m),I(n))},T=()=>{c||(c=!0,(async()=>{for await(const n of t.client.event.subscribe({signal:d.signal}))if(!(n.type!=="session.deleted"&&n.type!=="session.moved"))for(const[l,m]of a){if(m.sessionID!==n.data.sessionID)continue;a.delete(l);const E=i.get(l);E?await k(E,!0):await s?.detach(m)}})().catch(n=>{d.signal.aborted||t.log.write("warn","device session events failed",{error:String(n)})}))},x=async(n,l)=>{n.windows.delete(l),h.changed(l),!n.windows.size&&(await S(n),s?.state(y(n))||await k(n))},C=async(n,l)=>{if(n.closed||n.requests.has(l))return;const m=new AbortController;n.requests.set(l,m);const E=t.client.rpc(zt);try{const B=await E.command({sessionID:n.sessionID,connectionID:n.connectionID,requestID:l},{signal:AbortSignal.any([n.abort.signal,m.signal]),location:n.location}).then(G=>hn(p(),y(n),G,"agent",AbortSignal.any([n.abort.signal,m.signal])),G=>({type:"failure",error:fn(G)}));if(n.closed||m.signal.aborted)return;await E.result({sessionID:n.sessionID,connectionID:n.connectionID,requestID:l,outcome:r.Schema.encodeSync(dt)(B)},{signal:n.abort.signal,location:n.location}),await w(n)}catch(B){!n.closed&&!m.signal.aborted&&t.log.write("warn","device command failed",{requestID:l,error:String(B)})}finally{n.requests.delete(l)}},P=n=>{const{sessionID:l,serverID:m,location:E}=n;p(),T();const B=crypto.randomUUID(),G=new AbortController,K=Promise.withResolvers(),J={windows:new Set,ready:K.promise,reporting:Promise.resolve(),sessionID:l,serverID:m,location:E,connectionID:B,abort:G,requests:new Map,stopEvents:()=>{},closed:!1};J.ready=K.promise.then(()=>w(J)),i.set(f(J),J),a.set(f(J),y(J));const Y=t.client.rpc(zt);return J.stopEvents=Y.events.on("control",j=>{if(!(j.data.connectionID!==B||J.closed)){if(j.data.type==="attached")return K.resolve();if(j.data.type==="cancel"){J.requests.get(j.data.requestID)?.abort();return}C(J,j.data.requestID)}},{signal:G.signal}),(async()=>{for await(const j of t.client.event.subscribe({signal:G.signal}))if(j.type==="server.connected")return Y.attach({sessionID:l,connectionID:B,version:1},{signal:G.signal,location:E});throw new Error("The device event stream closed before it connected.")})().then(()=>(K.reject(new Error("The device connection closed before it was ready.")),k(J)),j=>(K.reject(j),k(J))),J},R=async(n,l,m)=>{m.throwIfAborted(),v(n.serverID);const E=i.get(f(n))??P(n);E.windows.add(l);const B=Promise.withResolvers(),G=()=>{B.reject(m.reason),x(E,l)};m.addEventListener("abort",G,{once:!0});try{m.aborted&&G(),await Promise.race([E.ready,B.promise]),m.throwIfAborted(),h.changed(l)}finally{m.removeEventListener("abort",G)}},o=(n,l,m,E)=>{if(E.throwIfAborted(),O(l.scope,m)!==n||p().state(y(n))?.handle.token!==l.handle.token)throw N("detached","The device stream has changed; reconnect the viewer.")},h=t.provide(ci,{state:n=>[...i.values()].filter(l=>l.windows.has(n)).map(l=>({scope:{sessionID:l.sessionID,serverID:l.serverID,location:l.location},state:s?.state(y(l))??null})),connect:(n,l)=>R(n,l.window,l.signal),disconnect:(n,l)=>{const m=i.get(f(n));return m?x(m,l.window):Promise.resolve()},list:async n=>un(async()=>{v(n.serverID);const l=n.sessionID?{serverID:n.serverID,sessionID:n.sessionID}:void 0;return{type:"devices",devices:await p().list(n.platform,l)}}),access:async(n,l)=>{const m=O(n.scope,l.window),E=await un(()=>({type:"attachment",attachment:p().access(y(m),n.enabled)}));return await w(m).catch(()=>{}),E},manual:async(n,l)=>{const m=O(n.scope,l.window),E=await hn(p(),y(m),n.operation,"manual",AbortSignal.any([m.abort.signal,l.signal]));return await w(m).catch(()=>{}),E},stream:async(n,l)=>{const m=O(n.scope,l.window);return uo(async()=>{const E=await p().stream(y(m),n.handle);if(o(m,n,l.window,l.signal),m.proxy&&m.proxy.token!==n.handle.token&&await S(m),!m.proxy){const K={token:n.handle.token,pending:eo(E)};m.proxy=K,K.pending.catch(()=>{m.proxy===K&&(m.proxy=void 0)})}const B=m.proxy,G=await B.pending;if(o(m,n,l.window,l.signal),m.proxy!==B)throw N("detached","The device stream has changed; reconnect the viewer.");return G.descriptor})}});t.onCleanup(t.windows.on("close",n=>{Promise.all([...i.values()].filter(l=>l.windows.has(n.id)).map(l=>x(l,n.id)))})),t.onCleanup(async()=>{d.abort(),await Promise.all([...i.values()].map(n=>k(n))),a.clear(),await s?.dispose()})}}async function hn(e,t,s,i,a){return un(async()=>{switch(a?.throwIfAborted(),s.type){case"list":return{type:"devices",devices:await e.list(s.platform,t)};case"state":return{type:"state",state:e.state(t)};case"open":return{type:"attachment",attachment:await e.open(t,s,i,a)};case"close":return await e.close(t,s,i,a),{type:"done"};default:return e.run(t,s,i,a)}})}async function un(e){try{return{type:"success",value:await e()}}catch(t){return{type:"failure",error:fn(t)}}}async function uo(e){try{return{type:"success",stream:await e()}}catch(t){return{type:"failure",error:fn(t)}}}function fn(e){return li(e)?e.data:{code:"internal",message:String(e).slice(0,2048),mayHaveExecuted:!1}}const fo=Cr();return q.createMainSetup=Cr,q.default=fo,q.runOperation=hn,M.exports})(require).default(g)}const ha=Object.freeze(Object.defineProperty({__proto__:null,default:da},Symbol.toStringTag,{value:"Module"}));exports.default=la;
+`),e.destroy()}function Ar(e=da){return t=>{let r;const i=new Map,a=new Map,c=new AbortController;let s=!1;const p=o=>JSON.stringify([o.serverID,o.sessionID]),l=()=>r??=mi(e()),v=o=>{if(!t.serverEndpoints.get(o)?.sameMachine)throw U("unsupported","Device control requires this desktop app's own local server.")},w=o=>({serverID:o.serverID,sessionID:o.sessionID}),B=(o,d)=>{v(o.serverID);const y=i.get(p(o));if(!y||y.closed||!y.windows.has(d))throw new Error("device.bridge.disconnected");return y},O=o=>o.windows.forEach(d=>b.changed(d)),m=async o=>{const d=o.proxy;o.proxy=void 0,await d?.pending.then(y=>y.stop()).catch(()=>{})},S=o=>{const d=o.reporting.then(async()=>{if(o.closed)return;const y=l().state(w(o));o.proxy&&o.proxy.token!==y?.handle.token&&await m(o),O(o),await t.client.rpc(Qt).state({sessionID:o.sessionID,connectionID:o.connectionID,state:y},{signal:o.abort.signal,location:o.location})});return o.reporting=d.catch(()=>{}),d},x=async(o,d=!1)=>{const y=p(o);o.closed||i.get(y)!==o||(o.closed=!0,i.delete(y),o.stopEvents(),o.abort.abort(),o.requests.forEach(P=>P.abort()),await m(o),d&&await r?.detach(w(o)),r?.state(w(o))||a.delete(y),O(o))},C=()=>{s||(s=!0,(async()=>{for await(const o of t.client.event.subscribe({signal:c.signal}))if(!(o.type!=="session.deleted"&&o.type!=="session.moved"))for(const[d,y]of a){if(y.sessionID!==o.data.sessionID)continue;a.delete(d);const P=i.get(d);P?await x(P,!0):await r?.detach(y)}})().catch(o=>{c.signal.aborted||t.log.write("warn","device session events failed",{error:String(o)})}))},L=async(o,d)=>{o.windows.delete(d),b.changed(d),!o.windows.size&&(await m(o),r?.state(w(o))||await x(o))},N=async(o,d)=>{if(o.closed||o.requests.has(d))return;const y=new AbortController;o.requests.set(d,y);const P=t.client.rpc(Qt);try{const u=await P.command({sessionID:o.sessionID,connectionID:o.connectionID,requestID:d},{signal:AbortSignal.any([o.abort.signal,y.signal]),location:o.location}).then(k=>yn(l(),w(o),k,"agent",AbortSignal.any([o.abort.signal,y.signal])),k=>({type:"failure",error:bn(k)}));if(o.closed||y.signal.aborted)return;await P.result({sessionID:o.sessionID,connectionID:o.connectionID,requestID:d,outcome:n.Schema.encodeSync(pt)(u)},{signal:o.abort.signal,location:o.location}),await S(o)}catch(u){!o.closed&&!y.signal.aborted&&t.log.write("warn","device command failed",{requestID:d,error:String(u)})}finally{o.requests.delete(d)}},R=o=>{const{sessionID:d,serverID:y,location:P}=o;l(),C();const u=crypto.randomUUID(),k=new AbortController,T=Promise.withResolvers(),M={windows:new Set,ready:T.promise,reporting:Promise.resolve(),sessionID:d,serverID:y,location:P,connectionID:u,abort:k,requests:new Map,stopEvents:()=>{},closed:!1};M.ready=T.promise.then(()=>S(M)),i.set(p(M),M),a.set(p(M),w(M));const V=t.client.rpc(Qt);return M.stopEvents=V.events.on("control",j=>{if(!(j.data.connectionID!==u||M.closed)){if(j.data.type==="attached")return T.resolve();if(j.data.type==="cancel"){M.requests.get(j.data.requestID)?.abort();return}N(M,j.data.requestID)}},{signal:k.signal}),(async()=>{for await(const j of t.client.event.subscribe({signal:k.signal}))if(j.type==="server.connected")return V.attach({sessionID:d,connectionID:u,version:1},{signal:k.signal,location:P});throw new Error("The device event stream closed before it connected.")})().then(()=>(T.reject(new Error("The device connection closed before it was ready.")),x(M)),j=>(T.reject(j),x(M))),M},W=async(o,d,y)=>{y.throwIfAborted(),v(o.serverID);const P=i.get(p(o))??R(o);P.windows.add(d);const u=Promise.withResolvers(),k=()=>{u.reject(y.reason),L(P,d)};y.addEventListener("abort",k,{once:!0});try{y.aborted&&k(),await Promise.race([P.ready,u.promise]),y.throwIfAborted(),b.changed(d)}finally{y.removeEventListener("abort",k)}},g=(o,d,y,P)=>{if(P.throwIfAborted(),B(d.scope,y)!==o||l().state(w(o))?.handle.token!==d.handle.token)throw U("detached","The device stream has changed; reconnect the viewer.")},b=t.provide(fi,{state:o=>[...i.values()].filter(d=>d.windows.has(o)).map(d=>({scope:{sessionID:d.sessionID,serverID:d.serverID,location:d.location},state:r?.state(w(d))??null})),connect:(o,d)=>W(o,d.window,d.signal),disconnect:(o,d)=>{const y=i.get(p(o));return y?L(y,d.window):Promise.resolve()},list:async(o,d)=>wn(async()=>{v(o.serverID);const y=o.sessionID?{serverID:o.serverID,sessionID:o.sessionID}:void 0;return{type:"devices",devices:await l().list(o.platform,y,d.signal)}}),access:async(o,d)=>{const y=B(o.scope,d.window),P=await wn(()=>({type:"attachment",attachment:l().access(w(y),o.enabled)}));return await S(y).catch(()=>{}),P},manual:async(o,d)=>{const y=B(o.scope,d.window),P=await yn(l(),w(y),o.operation,"manual",AbortSignal.any([y.abort.signal,d.signal]));return await S(y).catch(()=>{}),P},stream:async(o,d)=>{const y=B(o.scope,d.window);return Ia(async()=>{const P=await l().stream(w(y),o.handle);if(g(y,o,d.window,d.signal),y.proxy&&y.proxy.token!==o.handle.token&&await m(y),!y.proxy){const T={token:o.handle.token,pending:ga(P)};y.proxy=T,T.pending.catch(()=>{y.proxy===T&&(y.proxy=void 0)})}const u=y.proxy,k=await u.pending;if(g(y,o,d.window,d.signal),y.proxy!==u)throw U("detached","The device stream has changed; reconnect the viewer.");return k.descriptor})}});t.onCleanup(t.windows.on("close",o=>{Promise.all([...i.values()].filter(d=>d.windows.has(o.id)).map(d=>L(d,o.id)))})),t.onCleanup(async()=>{c.abort(),await Promise.all([...i.values()].map(o=>x(o))),a.clear(),await r?.dispose()})}}async function yn(e,t,r,i,a){return wn(async()=>{switch(a?.throwIfAborted(),r.type){case"list":return{type:"devices",devices:await e.list(r.platform,t,a)};case"state":return{type:"state",state:e.state(t)};case"open":return{type:"attachment",attachment:await e.open(t,r,i,a)};case"close":return await e.close(t,r,i,a),{type:"done"};default:return e.run(t,r,i,a)}})}async function wn(e){try{return{type:"success",value:await e()}}catch(t){return{type:"failure",error:bn(t)}}}async function Ia(e){try{return{type:"success",stream:await e()}}catch(t){return{type:"failure",error:bn(t)}}}function bn(e){return pi(e)?e.data:e instanceof Error&&e.name==="AbortError"?{code:"detached",message:"The pending device request was cancelled.",mayHaveExecuted:!1}:{code:"internal",message:String(e).slice(0,2048),mayHaveExecuted:!1}}const Da=Ar();return H.createMainSetup=Ar,H.default=Da,H.runOperation=yn,A.exports})(require).default(h)}const Cs=Object.freeze(Object.defineProperty({__proto__:null,default:Bs},Symbol.toStringTag,{value:"Module"}));exports.default=Ps;
diff --git a/dist/server.js b/dist/server.js
index c489010..98ac588 100644
--- a/dist/server.js
+++ b/dist/server.js
@@ -42,6 +42,7 @@ import { Schema as Schema2 } from "effect";
 // src/rpc.ts
 var exports_rpc = {};
 __export(exports_rpc, {
+  sameHandle: () => sameHandle,
   StreamProtocol: () => StreamProtocol,
   StreamDescriptor: () => StreamDescriptor,
   SnapshotReference: () => SnapshotReference,
@@ -206,6 +207,9 @@ var DeviceErrorCode = Schema.Literals([
   "helper-failed",
   "internal"
 ]).annotate({ identifier: "Device.DeviceErrorCode" });
+function sameHandle(expected, actual) {
+  return expected.token === actual.token && expected.generation === actual.generation && expected.platform === actual.platform && expected.deviceId === actual.deviceId;
+}
 var DeviceError = Schema.Struct({
   code: DeviceErrorCode,
   message: short,
@@ -356,6 +360,7 @@ var ControlRpc = Rpc.define({
 });
 
 // src/server.ts
+var unavailable = (call, code, message) => call.error("unavailable", message, { code, message, mayHaveExecuted: false });
 var make = Effect.fn("DeviceServer.make")(function* (ctx) {
   const attachments = new Map;
   let active = true;
@@ -374,30 +379,14 @@ var make = Effect.fn("DeviceServer.make")(function* (ctx) {
     attach: (input, call) => Effect.gen(function* () {
       const decoded = Schema3.decodeUnknownOption(Session.ID)(input.sessionID);
       if (Option.isNone(decoded))
-        return yield* Effect.fail(call.error("unavailable", "Invalid session id.", {
-          code: "not-found",
-          message: "Invalid session id.",
-          mayHaveExecuted: false
-        }));
+        return yield* Effect.fail(unavailable(call, "not-found", "Invalid session id."));
       const sessionID2 = decoded.value;
-      const session = yield* ctx.session.get({ sessionID: sessionID2 }).pipe(Effect.mapError(() => call.error("unavailable", "Session not found.", {
-        code: "not-found",
-        message: "Session not found.",
-        mayHaveExecuted: false
-      })));
+      const session = yield* ctx.session.get({ sessionID: sessionID2 }).pipe(Effect.mapError(() => unavailable(call, "not-found", "Session not found.")));
       if (session.location.directory !== ctx.location.directory)
-        return yield* Effect.fail(call.error("unavailable", "Session belongs to another location.", {
-          code: "not-found",
-          message: "Session belongs to another location.",
-          mayHaveExecuted: false
-        }));
+        return yield* Effect.fail(unavailable(call, "not-found", "Session belongs to another location."));
       const attachment = yield* Effect.acquireRelease(Effect.gen(function* () {
         if (!active)
-          return yield* Effect.fail(call.error("unavailable", "Device server is shutting down.", {
-            code: "internal",
-            message: "Device server is shutting down.",
-            mayHaveExecuted: false
-          }));
+          return yield* Effect.fail(unavailable(call, "internal", "Device server is shutting down."));
         yield* close(input.sessionID, "replaced");
         const attachment2 = {
           connectionID: input.connectionID,
@@ -415,33 +404,21 @@ var make = Effect.fn("DeviceServer.make")(function* (ctx) {
     state: (input, call) => Effect.gen(function* () {
       const attachment = attachments.get(input.sessionID);
       if (!attachment || attachment.connectionID !== input.connectionID)
-        return yield* Effect.fail(call.error("unavailable", "Device connection is unavailable.", {
-          code: "detached",
-          message: "Device connection is unavailable.",
-          mayHaveExecuted: false
-        }));
+        return yield* Effect.fail(unavailable(call, "detached", "Device connection is unavailable."));
       attachment.state = input.state;
     }),
     command: (input, call) => Effect.gen(function* () {
       const attachment = attachments.get(input.sessionID);
       const pending = attachment?.connectionID === input.connectionID ? attachment.pending.get(input.requestID) : undefined;
       if (!pending || pending.claimed)
-        return yield* Effect.fail(call.error("unavailable", "Device request is no longer available.", {
-          code: "detached",
-          message: "Device request is no longer available.",
-          mayHaveExecuted: false
-        }));
+        return yield* Effect.fail(unavailable(call, "detached", "Device request is no longer available."));
       pending.claimed = true;
       return pending.operation;
     }),
     result: (input, call) => Effect.gen(function* () {
       const attachment = attachments.get(input.sessionID);
       if (!attachment || attachment.connectionID !== input.connectionID)
-        return yield* Effect.fail(call.error("unavailable", "Device connection is unavailable.", {
-          code: "detached",
-          message: "Device connection is unavailable.",
-          mayHaveExecuted: false
-        }));
+        return yield* Effect.fail(unavailable(call, "detached", "Device connection is unavailable."));
       const pending = attachment.pending.get(input.requestID);
       if (!pending)
         return;
@@ -497,7 +474,7 @@ var make = Effect.fn("DeviceServer.make")(function* (ctx) {
           });
         return { type: "attachment", attachment: device };
       }
-      if (device.handle.token !== operation.handle.token || device.handle.generation !== operation.handle.generation)
+      if (!exports_rpc.sameHandle(device.handle, operation.handle))
         return yield* new Tool.Error({
           message: "[device.detached] This device handle no longer matches the attached device. Call the state tool to read the current handle, then retry with it."
         });
diff --git a/package.json b/package.json
index 11e679f..8cb84e7 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "fmt": "oxfmt --write --ignore-path .oxfmtignore .",
     "fmt:check": "oxfmt --check --ignore-path .oxfmtignore .",
     "bundle": "node node_modules/vite/bin/vite.js build --configLoader runner && bun build src/index.ts --target=node --format=esm --packages=external --outfile=dist/server.js",
-    "typecheck": "tsc6 --noEmit -p tsconfig.test.json",
+    "typecheck": "tsc --noEmit -p tsconfig.test.json",
     "test": "bun test",
     "check": "bun run lint && bun run fmt:check && bun run typecheck && bun test",
     "verify:package": "node script/verify-package.mjs",
@@ -61,7 +61,7 @@
     "oxfmt": "0.75.0",
     "oxlint": "1.90.0",
     "solid-js": "1.9.17",
-    "typescript": "npm:@typescript/typescript6@6.0.2",
+    "typescript": "6.0.2",
     "vite": "7.3.7",
     "vite-plugin-solid": "2.11.10"
   },
diff --git a/src/controller.test.ts b/src/controller.test.ts
index df23773..b44c0c0 100644
--- a/src/controller.test.ts
+++ b/src/controller.test.ts
@@ -433,3 +433,136 @@ test("cancelling a queued action prevents dispatch while preserving the active a
   expect(item.calls).toEqual(["open", "key"]);
   await item.controller.dispose();
 });
+
+test("switches show the new device immediately, preserve ownership, and allow switching back during cleanup", async () => {
+  const item = fixture();
+  const first = await item.controller.open(caller, selection, "manual");
+  item.controller.access(caller, false);
+  const close = item.runtime.close;
+  item.runtime.close = async (input) => {
+    if (input.handle.token === first.handle.token) {
+      item.started.resolve();
+      await item.release.promise;
+    }
+    await close(input);
+  };
+  const second = await item.controller.open(
+    caller,
+    { platform: "ios", deviceId: "iphone" },
+    "manual",
+  );
+  await item.started.promise;
+  expect(item.controller.state(caller)?.handle).toEqual(second.handle);
+  expect(second.agentAccess).toBe(false);
+  expect(await item.controller.stream(caller, second.handle)).toMatchObject({ deviceId: "iphone" });
+  await expect(item.controller.stream(caller, first.handle)).rejects.toMatchObject({
+    code: "permission-denied",
+  });
+  await expect(
+    item.controller.open({ ...caller, sessionID: "other" }, selection, "manual"),
+  ).rejects.toMatchObject({ code: "device-busy" });
+  const returning = item.controller.open(caller, selection, "manual");
+  item.release.resolve();
+  const returned = await returning;
+  expect(returned.handle.platform).toBe("android");
+  expect(returned.handle.token).not.toBe(first.handle.token);
+  expect(returned.agentAccess).toBe(false);
+  await item.controller.dispose();
+  expect(item.calls).toEqual(["open", "open", "close", "open", "close", "dispose"]);
+});
+
+test("a failed switch preserves the current screen and attachment", async () => {
+  const item = fixture();
+  const first = await item.controller.open(caller, selection, "manual");
+  item.runtime.open = async () => {
+    throw deviceError("helper-failed", "capture failed");
+  };
+  await expect(
+    item.controller.open(caller, { platform: "ios", deviceId: "iphone" }, "manual"),
+  ).rejects.toMatchObject({ code: "helper-failed" });
+  expect(item.controller.state(caller)?.handle).toEqual(first.handle);
+  expect(await item.controller.stream(caller, first.handle)).toMatchObject({ deviceId: "phone" });
+  await item.controller.dispose();
+});
+
+test("failed retired cleanup is retried on disposal without reverting the active device", async () => {
+  const item = fixture();
+  const first = await item.controller.open(caller, selection, "manual");
+  const close = item.runtime.close;
+  let failures = 0;
+  item.runtime.close = async (input) => {
+    if (input.handle.token === first.handle.token && failures++ === 0)
+      throw deviceError("timeout", "cleanup failed");
+    await close(input);
+  };
+  const second = await item.controller.open(
+    caller,
+    { platform: "ios", deviceId: "iphone" },
+    "manual",
+  );
+  expect(item.controller.state(caller)?.handle).toEqual(second.handle);
+  await item.controller.dispose();
+  expect(item.calls).toEqual(["open", "open", "close", "dispose"]);
+});
+
+test("a switch does not wait for an old in-flight action and never replays queued input on the new device", async () => {
+  const item = fixture();
+  const first = await item.controller.open(caller, selection, "manual");
+  const active = item.controller.run(
+    caller,
+    { type: "key", handle: first.handle, key: "home" },
+    "agent",
+  );
+  await item.started.promise;
+  const queued = item.controller
+    .run(caller, { type: "key", handle: first.handle, key: "back" }, "agent")
+    .catch((error: unknown) => error);
+  const second = await item.controller.open(
+    caller,
+    { platform: "ios", deviceId: "iphone" },
+    "manual",
+  );
+  expect(await item.controller.stream(caller, second.handle)).toMatchObject({ deviceId: "iphone" });
+  expect(item.calls).toEqual(["open", "key", "open"]);
+  item.release.resolve();
+  await active;
+  expect(await queued).toMatchObject({ code: "permission-denied" });
+  await item.controller.dispose();
+  expect(item.calls).toEqual(["open", "key", "open", "close", "dispose"]);
+});
+
+test("a newer selection does not wait for a cancelled boot's cleanup and the cancelled device never becomes active", async () => {
+  const item = fixture();
+  await item.controller.open(caller, selection, "manual");
+  const open = item.runtime.open;
+  let cancelled: AbortSignal | undefined;
+  item.runtime.open = async (input, signal) => {
+    if (input.platform === "ios") {
+      cancelled = signal;
+      item.started.resolve();
+      await item.release.promise;
+    }
+    return open(input);
+  };
+  const previous = item.controller
+    .open(caller, { platform: "ios", deviceId: "iphone" }, "manual")
+    .catch((error: unknown) => error);
+  await item.started.promise;
+  item.controller.access(caller, false);
+  expect(await item.controller.list()).toEqual([]);
+  const latest = await item.controller.open(
+    caller,
+    { ...selection, deviceId: "other-phone" },
+    "manual",
+  );
+  expect(cancelled?.aborted).toBe(true);
+  expect(latest.agentAccess).toBe(false);
+  expect(await item.controller.stream(caller, latest.handle)).toMatchObject({
+    deviceId: "other-phone",
+  });
+  item.release.resolve();
+  expect(await previous).toMatchObject({ name: "AbortError" });
+  expect(item.controller.state(caller)?.handle).toEqual(latest.handle);
+  expect(item.closes.find((input) => input.handle.deviceId === "iphone")?.shutdown).toBe(true);
+  await item.controller.dispose();
+});
diff --git a/src/controller.ts b/src/controller.ts
index c041ee3..87b05b5 100644
--- a/src/controller.ts
+++ b/src/controller.ts
@@ -30,6 +30,9 @@ export function createDeviceController(runtime: DeviceRuntime) {
   const reservations = new Set<string>();
   const rollbacks = new Map<string, OpenResult>();
   const transitions = new Map<string, Promise<void>>();
+  const opening = new Map<string, AbortController>();
+  const preparing = new Map<Promise<void>, { session: string; device: string }>();
+  const retiring = new Map<Attachment, { session: string; pending: Promise<void> }>();
   let disposed = false;
 
   const sessionKey = (caller: DeviceCaller) => JSON.stringify([caller.serverID, caller.sessionID]);
@@ -55,12 +58,7 @@ export function createDeviceController(runtime: DeviceRuntime) {
   ) => {
     const entry = requireSession(caller);
     const expected = entry.device.handle;
-    if (
-      expected.token !== handle.token ||
-      expected.generation !== handle.generation ||
-      expected.platform !== handle.platform ||
-      expected.deviceId !== handle.deviceId
-    )
+    if (!Device.sameHandle(expected, handle))
       throw deviceError(
         "permission-denied",
         "This handle does not belong to this session's attached device.",
@@ -83,6 +81,36 @@ export function createDeviceController(runtime: DeviceRuntime) {
     });
     return result;
   };
+  const prepare = <Result>(
+    caller: DeviceCaller,
+    input: OpenInput,
+    signal: AbortSignal | undefined,
+    action: (signal: AbortSignal) => Promise<Result>,
+  ) => {
+    const session = sessionKey(caller);
+    const device = deviceKey(input.platform, input.deviceId);
+    opening.get(session)?.abort();
+    const abort = new AbortController();
+    const combined = AbortSignal.any([abort.signal, ...(signal ? [signal] : [])]);
+    opening.set(session, abort);
+    const cleanup = [...preparing]
+      .filter(([, previous]) => previous.session === session && previous.device === device)
+      .map(([pending]) => pending);
+    const result = Promise.all(cleanup).then(() => {
+      combined.throwIfAborted();
+      return action(combined);
+    });
+    const pending = result.then(
+      () => undefined,
+      () => undefined,
+    );
+    preparing.set(pending, { session, device });
+    void pending.then(() => {
+      preparing.delete(pending);
+      if (opening.get(session) === abort) opening.delete(session);
+    });
+    return result;
+  };
   const forget = (entry: Attachment) => {
     devices.forEach((value, key) => {
       if (value === entry) devices.delete(key);
@@ -100,6 +128,25 @@ export function createDeviceController(runtime: DeviceRuntime) {
       throw error;
     }
   };
+  const retire = (caller: DeviceCaller, entry: Attachment) => {
+    const pending = release(entry).then(
+      () => {
+        retiring.delete(entry);
+      },
+      // Keep ownership until reopening or disposal retries failed cleanup.
+      () => undefined,
+    );
+    retiring.set(entry, { session: sessionKey(caller), pending });
+  };
+  const finishRetirement = async (caller: DeviceCaller, input: OpenInput) => {
+    const entry = devices.get(deviceKey(input.platform, input.deviceId));
+    const cleanup = entry && retiring.get(entry);
+    if (!entry || !cleanup || cleanup.session !== sessionKey(caller)) return;
+    await cleanup.pending;
+    if (!retiring.has(entry)) return;
+    await release(entry);
+    retiring.delete(entry);
+  };
   const rollback = async (key: string, device: OpenResult) => {
     rollbacks.set(key, device);
     await runtime.close({ handle: device.handle, shutdown: true });
@@ -118,7 +165,7 @@ export function createDeviceController(runtime: DeviceRuntime) {
       throw deviceError("device-busy", "This device is controlled by another session.");
     reservations.add(key);
     try {
-      const device = rollbacks.get(key) ?? (await runtime.open(input));
+      const device = rollbacks.get(key) ?? (await runtime.open(input, signal));
       const physicalKey = deviceKey(device.handle.platform, device.handle.deviceId);
       if (devices.has(physicalKey)) {
         await runtime.close({ handle: device.handle });
@@ -199,17 +246,21 @@ export function createDeviceController(runtime: DeviceRuntime) {
   };
 
   return {
-    async list(platform?: Device.Platform, caller?: DeviceCaller) {
+    async list(platform?: Device.Platform, caller?: DeviceCaller, signal?: AbortSignal) {
       if (disposed) throw deviceError("detached", "The device controller has stopped.");
       const own = caller ? sessions.get(sessionKey(caller)) : undefined;
-      return (await runtime.list(platform)).map((device) => {
+      const listed = await runtime.list(platform, signal);
+      signal?.throwIfAborted();
+      return listed.map((device) => {
         const key = deviceKey(device.platform, device.id);
         const owner = devices.get(key);
         if (owner)
           return {
             ...device,
             ownership:
-              owner === own ? ("owned-by-this-host" as const) : ("owned-by-other" as const),
+              owner === own || (caller && retiring.get(owner)?.session === sessionKey(caller))
+                ? ("owned-by-this-host" as const)
+                : ("owned-by-other" as const),
           };
         return reservations.has(key) ? { ...device, ownership: "owned-by-other" as const } : device;
       });
@@ -224,29 +275,36 @@ export function createDeviceController(runtime: DeviceRuntime) {
       return report(entry);
     },
     async open(caller: DeviceCaller, input: OpenInput, origin: DeviceOrigin, signal?: AbortSignal) {
-      return transition(caller, async () => {
-        signal?.throwIfAborted();
-        if (disposed) throw deviceError("detached", "The device controller has stopped.");
-        const current = sessions.get(sessionKey(caller));
-        if (current && devices.get(deviceKey(input.platform, input.deviceId)) === current) {
-          requireHandle(caller, current.device.handle, origin);
-          return report(current);
-        }
-        if (origin === "agent")
-          throw deviceError(
-            "permission-denied",
-            "Attach a device and enable agent access in the Device panel first.",
-          );
+      signal?.throwIfAborted();
+      if (disposed) throw deviceError("detached", "The device controller has stopped.");
+      const current = sessions.get(sessionKey(caller));
+      if (current && devices.get(deviceKey(input.platform, input.deviceId)) === current) {
+        requireHandle(caller, current.device.handle, origin);
+        if (origin === "manual") opening.get(sessionKey(caller))?.abort();
+        return report(current);
+      }
+      if (origin === "agent")
+        throw deviceError(
+          "permission-denied",
+          "Attach a device and enable agent access in the Device panel first.",
+        );
+      return prepare(caller, input, signal, async (signal) => {
+        await finishRetirement(caller, input);
+        signal.throwIfAborted();
         const entry = await acquire(input, signal);
         try {
-          if (current) await release(current, undefined, signal);
+          return await transition(caller, async () => {
+            signal.throwIfAborted();
+            const current = sessions.get(sessionKey(caller));
+            entry.agentAccess = current?.agentAccess ?? true;
+            sessions.set(sessionKey(caller), entry);
+            if (current) retire(caller, current);
+            return report(entry);
+          });
         } catch (error) {
           await discard(entry);
           throw error;
         }
-        entry.agentAccess = current?.agentAccess ?? true;
-        sessions.set(sessionKey(caller), entry);
-        return report(entry);
       });
     },
     async stream(caller: DeviceCaller, handle: Device.DeviceHandle) {
@@ -281,6 +339,9 @@ export function createDeviceController(runtime: DeviceRuntime) {
       origin: DeviceOrigin,
       signal?: AbortSignal,
     ) {
+      signal?.throwIfAborted();
+      requireHandle(caller, input.handle, origin);
+      opening.get(sessionKey(caller))?.abort();
       return transition(caller, async () => {
         signal?.throwIfAborted();
         const entry = requireHandle(caller, input.handle, origin);
@@ -289,6 +350,7 @@ export function createDeviceController(runtime: DeviceRuntime) {
       });
     },
     async detach(caller: DeviceCaller) {
+      opening.get(sessionKey(caller))?.abort();
       return transition(caller, async () => {
         const entry = sessions.get(sessionKey(caller));
         if (!entry) return;
@@ -298,7 +360,12 @@ export function createDeviceController(runtime: DeviceRuntime) {
     },
     async dispose() {
       disposed = true;
+      for (const abort of opening.values()) abort.abort();
+      await Promise.all(preparing.keys());
       await Promise.all(transitions.values());
+      await Promise.all([...retiring.values()].map((cleanup) => cleanup.pending));
+      await Promise.allSettled([...retiring.keys()].map((entry) => release(entry)));
+      retiring.clear();
       await Promise.all([...new Set(devices.values())].map((entry) => entry.pending));
       sessions.clear();
       devices.clear();
diff --git a/src/gui.css b/src/gui.css
index 4984d55..33dfbe3 100644
--- a/src/gui.css
+++ b/src/gui.css
@@ -151,3 +151,10 @@
   overflow-wrap: anywhere;
   pointer-events: none;
 }
+
+.device-panel__viewer-state--pending {
+  inset: 12px auto auto;
+  padding: 8px 12px;
+  border-radius: 4px;
+  background: var(--background-base);
+}
diff --git a/src/gui.tsx b/src/gui.tsx
index afe7eaa..b21a603 100644
--- a/src/gui.tsx
+++ b/src/gui.tsx
@@ -3,6 +3,7 @@ import { MenuItem, Panel, Plugin, usePanel } from "@opencode/plugin/gui";
 import { DeviceBridge } from "./bridge.js";
 import { DeviceIpc } from "./ipc.js";
 import { Device } from "./rpc.js";
+import { createLatestRequest } from "./latest-request.js";
 import {
   contentPoint,
   createViewer,
@@ -97,16 +98,19 @@ export default Plugin.define({
       const [devices, setDevices] = createSignal<readonly Device.DeviceInfo[]>([]);
       const [selectedDevice, setSelectedDevice] = createSignal("");
       const [selectedPlatform, setSelectedPlatform] = createSignal<Device.Platform>("android");
+      let platformChosen = false;
       const platformDevices = createMemo(() =>
         devices().filter((device) => device.platform === selectedPlatform()),
       );
-      const [busy, setBusy] = createSignal<string>();
+      const [opening, setOpening] = createSignal(false);
+      const [listing, setListing] = createSignal(false);
       const [error, setError] = createSignal<string>();
       const [connectionError, setConnectionError] = createSignal<string>();
       const [viewerState, setViewerState] = createSignal<ViewerState>("idle");
       const [renderedToken, setRenderedToken] = createSignal<string>();
       const [viewer, setViewer] = createSignal<ReturnType<typeof createViewer>>();
       const [canvas, setCanvas] = createSignal<HTMLCanvasElement>();
+      const [viewerRevision, setViewerRevision] = createSignal(0);
       const scope = () => ({
         sessionID: props.sessionID,
         serverID: props.serverID,
@@ -117,34 +121,42 @@ export default Plugin.define({
         undefined;
       const attachmentToken = createMemo(() => attachment()?.handle.token);
       createEffect(() => {
-        const current = attachment();
+        attachmentToken();
+        if (untrack(opening)) return;
+        const current = untrack(attachment);
         if (!current) return;
         setSelectedPlatform(current.handle.platform);
         setSelectedDevice(current.selection?.deviceId ?? current.handle.deviceId);
       });
-      const startupMessage = createMemo(() => {
-        if (connectionError() || error()) return;
-        if (busy() === "list") return "Finding devices...";
-        if (!busy() && !attachment() && devices().length === 0)
+      const discoveryMessage = () => {
+        if (listing() && !opening() && !attachment()) return "Finding devices...";
+        if (!listing() && !opening() && !attachment() && devices().length === 0)
           return "No emulators or simulators found.";
-        if (busy() === "open") {
-          return devices().find((device) => device.id === selectedDevice())?.state === "shutdown"
-            ? "Booting up device..."
-            : "Connecting to device...";
-        }
+      };
+      const openingMessage = () => {
+        if (!opening()) return;
+        return devices().find((device) => device.id === selectedDevice())?.state === "shutdown"
+          ? "Booting up device..."
+          : "Connecting to device...";
+      };
+      const screenMessage = () => {
         if (
           attachment()?.capabilities.supported.includes("stream") &&
           (viewerState() === "idle" || viewerState() === "connecting")
         ) {
           return "Almost done, preparing the screen...";
         }
+      };
+      const startupMessage = createMemo(() => {
+        if (connectionError() || error()) return;
+        return openingMessage() ?? discoveryMessage() ?? screenMessage();
       });
       let pointerStart:
         | { point: Device.LogicalPoint; frame: ScreenFrame; pointerId: number }
         | undefined;
-      const currentFrame = () => {
+      const displayedFrame = () => {
         const surface = canvas();
-        if (!surface || busy() === "open" || busy() === "close") return;
+        if (!surface) return;
         return screenFrame(attachmentToken(), renderedToken(), viewerState(), surface);
       };
 
@@ -167,82 +179,117 @@ export default Plugin.define({
           });
       });
 
-      const outcome = async (name: string, action: () => Promise<DeviceBridge.Outcome>) => {
-        setBusy(name);
+      const value = (result: DeviceBridge.Outcome) => {
+        if (result.type === "failure")
+          throw new Error(`${result.error.code}: ${result.error.message}`);
+        return result.value;
+      };
+      const outcome = async (action: () => Promise<DeviceBridge.Outcome>) => {
         setError(undefined);
         try {
-          const result = await action();
-          if (result.type === "failure") {
-            setError(`${result.error.code}: ${result.error.message}`);
-            return;
-          }
-          return result.value;
+          return value(await action());
         } catch (cause) {
           setError(message(cause));
-        } finally {
-          setBusy(undefined);
         }
       };
+      const restoreSelection = () => {
+        const current = attachment();
+        setSelectedDevice(current?.selection?.deviceId ?? current?.handle.deviceId ?? "");
+        if (current) setSelectedPlatform(current.handle.platform);
+      };
+      const selection = createLatestRequest({
+        pending: setOpening,
+        error(cause) {
+          setError(message(cause));
+          restoreSelection();
+        },
+      });
+      const discovery = createLatestRequest({
+        pending: setListing,
+        error: (cause) => setError(message(cause)),
+      });
+      onCleanup(() => {
+        selection.cancel();
+        discovery.cancel();
+      });
 
       const refresh = async () => {
-        const value = await outcome("list", () =>
-          bridge.list({ serverID: props.serverID, sessionID: props.sessionID }),
+        setError(undefined);
+        const input = { serverID: props.serverID, sessionID: props.sessionID };
+        await discovery.run(
+          (signal) => bridge.list(input, { signal }),
+          (result) => {
+            const listed = value(result);
+            if (listed.type !== "devices") return;
+            setDevices(listed.devices);
+            if (opening()) return;
+            if (attachment()) {
+              if (viewerState() === "paused") setViewerRevision((revision) => revision + 1);
+              return;
+            }
+            const first =
+              firstDevice(platformDevices()) ??
+              (!platformChosen && !selectedDevice() ? firstDevice(listed.devices) : undefined);
+            if (first) {
+              setSelectedPlatform(first.platform);
+              void selectDevice(first.id);
+            }
+          },
         );
-        if (value?.type !== "devices") return;
-        setDevices(value.devices);
-        const current = attachment();
-        if (current) {
-          setSelectedPlatform(current.handle.platform);
-          setSelectedDevice(current.selection?.deviceId ?? current.handle.deviceId);
-          return;
-        }
-        const first =
-          firstDevice(platformDevices()) ??
-          (!selectedDevice() ? firstDevice(value.devices) : undefined);
-        if (first) {
-          setSelectedPlatform(first.platform);
-          await selectDevice(first.id);
-        }
       };
 
       const selectPlatform = async (platform: Device.Platform) => {
+        platformChosen = true;
         if (platform === selectedPlatform()) return;
+        selection.cancel();
         setSelectedPlatform(platform);
         const first =
           platformDevices().find((device) => device.id === selectedDevice()) ??
           firstDevice(platformDevices());
         if (first) await selectDevice(first.id);
+        else setSelectedDevice("");
       };
 
       const selectDevice = async (id: string) => {
+        if (opening() && id === selectedDevice()) return;
         setSelectedDevice(id);
-        const value = await outcome("open", async () => {
-          await connect(scope());
-          const device = devices().find((item) => item.id === id);
-          if (!device) throw new Error("The selected device is no longer available.");
-          return bridge.manual({
-            scope: scope(),
-            operation: {
-              type: "open",
-              platform: device.platform,
-              deviceId: device.id,
-              boot: device.state === "shutdown",
-            },
-          });
-        });
-        if (!value) {
-          const current = attachment();
-          setSelectedDevice(current?.selection?.deviceId ?? current?.handle.deviceId ?? "");
-          if (current) setSelectedPlatform(current.handle.platform);
-        }
+        setError(undefined);
+        const target = scope();
+        await selection.run(
+          async (signal) => {
+            const device = devices().find((item) => item.id === id);
+            if (!device) throw new Error("The selected device is no longer available.");
+            await connect(target);
+            signal.throwIfAborted();
+            return bridge.manual(
+              {
+                scope: target,
+                operation: {
+                  type: "open",
+                  platform: device.platform,
+                  deviceId: device.id,
+                  boot: device.state === "shutdown",
+                },
+              },
+              { signal },
+            );
+          },
+          (result) => {
+            if (result.type === "failure" && result.error.code === "detached") restoreSelection();
+            else value(result);
+          },
+        );
       };
 
       createEffect(() => {
         scope();
+        selection.cancel();
+        discovery.cancel();
         void refresh();
       });
 
       createEffect(() => {
+        viewerRevision();
         const token = attachmentToken();
         const surface = canvas();
         const current = untrack(attachment);
@@ -260,36 +307,43 @@ export default Plugin.define({
           !current.capabilities.supported.includes("stream")
         )
           return;
+        setError(undefined);
         const abort = new AbortController();
-        void bridge
-          .stream({ scope: scope(), handle: current.handle }, { signal: abort.signal })
-          .then(
-            (result) => {
-              if (abort.signal.aborted) return;
-              if (result.type === "failure") {
-                setError(`${result.error.code}: ${result.error.message}`);
-                return;
-              }
-              setViewer(
-                createViewer({
-                  canvas: surface,
-                  stream: result.stream,
-                  onState: (state) => {
-                    if (abort.signal.aborted || attachmentToken() !== token) return;
-                    setRenderedToken(state === "playing" ? token : undefined);
-                    setViewerState(state);
-                  },
-                  onError: setError,
-                }),
-              );
-            },
-            (cause) => {
-              if (!abort.signal.aborted) setError(message(cause));
-            },
-          );
+        let currentViewer: ReturnType<typeof createViewer> | undefined;
+        const isCurrent = () => !abort.signal.aborted && attachmentToken() === token;
+        const fail = (cause: unknown) => {
+          if (!isCurrent()) return;
+          setViewerState("paused");
+          setError(message(cause));
+        };
+        const start = async () => {
+          try {
+            const result = await bridge.stream(
+              { scope: scope(), handle: current.handle },
+              { signal: abort.signal },
+            );
+            if (!isCurrent()) return;
+            if (result.type === "failure")
+              return fail(`${result.error.code}: ${result.error.message}`);
+            currentViewer = createViewer({
+              canvas: surface,
+              stream: result.stream,
+              onState: (state) => {
+                if (!isCurrent()) return;
+                setRenderedToken(state === "playing" ? token : undefined);
+                setViewerState(state);
+              },
+              onError: fail,
+            });
+            setViewer(currentViewer);
+          } catch (cause) {
+            fail(cause);
+          }
+        };
+        void start();
         onCleanup(() => {
           abort.abort();
-          viewer()?.destroy();
+          currentViewer?.destroy();
           setViewer(undefined);
         });
       });
@@ -297,7 +351,7 @@ export default Plugin.define({
       createEffect(() => viewer()?.active(panel.visible()));
 
       const manual = (operation: DeviceBridge.Operation) =>
-        outcome(operation.type, () => bridge.manual({ scope: scope(), operation }));
+        outcome(() => bridge.manual({ scope: scope(), operation }));
       const point = (event: PointerEvent) => {
         const surface = canvas();
         if (!surface) return;
@@ -308,7 +362,7 @@ export default Plugin.define({
       };
       const pointerDown = (event: PointerEvent) => {
         pointerStart = undefined;
-        const frame = currentFrame();
+        const frame = displayedFrame();
         if (event.button !== 0 || !frame) return;
         const start = point(event);
         const surface = canvas();
@@ -331,7 +385,7 @@ export default Plugin.define({
           !to ||
           !surface ||
           start.pointerId !== event.pointerId ||
-          !sameScreenFrame(start.frame, currentFrame())
+          !sameScreenFrame(start.frame, displayedFrame())
         )
           return;
         const viewport = { width: surface.width, height: surface.height };
@@ -349,7 +403,7 @@ export default Plugin.define({
             <canvas
               ref={setCanvas}
               aria-label="Live device screen"
-              style={{ visibility: currentFrame() ? "visible" : "hidden" }}
+              style={{ visibility: displayedFrame() ? "visible" : "hidden" }}
               tabIndex={0}
               onPointerDown={pointerDown}
               onPointerUp={pointerUp}
@@ -358,6 +412,7 @@ export default Plugin.define({
             <Show when={startupMessage()}>
               <div
                 class="device-panel__viewer-state"
+                classList={{ "device-panel__viewer-state--pending": !!displayedFrame() }}
                 role="status"
                 aria-live="polite"
                 aria-atomic="true"
@@ -381,7 +436,6 @@ export default Plugin.define({
                     type="button"
                     class="device-panel__platform"
                     aria-pressed={selectedPlatform() === platform}
-                    disabled={!!busy()}
                     onClick={() => void selectPlatform(platform)}
                   >
                     {platform === "android" ? "Android" : "iOS"}
@@ -394,7 +448,7 @@ export default Plugin.define({
               aria-label="Device"
               value={platformDevices().find((device) => device.id === selectedDevice())?.id ?? ""}
               onChange={(event) => void selectDevice(event.currentTarget.value)}
-              disabled={!!busy() || platformDevices().length === 0}
+              disabled={platformDevices().length === 0}
             >
               <option value="" disabled>
                 {platformDevices().length ? "Select device" : "No devices"}
@@ -408,7 +462,7 @@ export default Plugin.define({
                 type="button"
                 class="device-panel__action"
                 aria-label="Refresh devices"
-                disabled={!!busy()}
+                aria-busy={listing()}
                 onClick={() => void refresh()}
               >
                 <ctx.ui.Icon name="refresh" size="small" />
@@ -425,9 +479,9 @@ export default Plugin.define({
                 label="Agent device access"
                 hideLabel
                 checked={attachment()?.agentAccess ?? false}
-                disabled={!attachment() || !!busy()}
+                disabled={!attachment()}
                 onChange={(enabled) =>
-                  void outcome("access", () => bridge.access({ scope: scope(), enabled }))
+                  void outcome(() => bridge.access({ scope: scope(), enabled }))
                 }
               />
             </ctx.ui.Tooltip>
diff --git a/src/index.ts b/src/index.ts
index 5613ac4..4cd692c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,10 +3,7 @@ import { Effect } from "effect";
 import { DeviceServer } from "./server.js";
 import { DeviceTools } from "./tools.js";
 
-// The server half of the device plugin. It makes the per-session device broker over the frozen control RPC, then
-// registers the `device` tools that dispatch through it. It drives no device itself: the broker forwards
-// every operation to the desktop connection the user attached, and the tools own only schema selection and the
-// conversion of a backend result into tool output and content.
+// Register tools and the session broker. Device operations run only in the desktop connection the user attached.
 export default define({
   id: "demul.device",
   effect: Effect.fn("DevicePlugin.effect")(function* (ctx) {
diff --git a/src/latest-request.test.ts b/src/latest-request.test.ts
new file mode 100644
index 0000000..9827562
--- /dev/null
+++ b/src/latest-request.test.ts
@@ -0,0 +1,62 @@
+import { expect, test } from "bun:test";
+import { createLatestRequest } from "./latest-request.js";
+
+test("refresh stays independent of selection and superseded selections cannot update the panel", async () => {
+  const states: boolean[] = [];
+  const errors: unknown[] = [];
+  const values: string[] = [];
+  const selection = createLatestRequest({
+    pending: (state) => states.push(state),
+    error: (error) => errors.push(error),
+  });
+  const discovery = createLatestRequest({
+    pending: () => undefined,
+    error: (error) => errors.push(error),
+  });
+  const first = Promise.withResolvers<string>();
+  let signal: AbortSignal | undefined;
+  const previous = selection.run(
+    (current) => {
+      signal = current;
+      return first.promise;
+    },
+    (value) => values.push(value),
+  );
+  await discovery.run(
+    async () => "devices",
+    (value) => values.push(value),
+  );
+  expect(signal?.aborted).toBe(false);
+  expect(states).toEqual([true]);
+  await selection.run(
+    async () => "latest device",
+    (value) => values.push(value),
+  );
+  expect(signal?.aborted).toBe(true);
+  first.reject(new Error("obsolete boot failure"));
+  await previous;
+  expect(values).toEqual(["devices", "latest device"]);
+  expect(states).toEqual([true, true, false]);
+  expect(errors).toEqual([]);
+});
+
+test("closing a panel cancels pending work and ignores late success", async () => {
+  const values: string[] = [];
+  const states: boolean[] = [];
+  const request = createLatestRequest({
+    pending: (state) => states.push(state),
+    error: () => {
+      throw new Error("cancelled work reported an error");
+    },
+  });
+  const result = Promise.withResolvers<string>();
+  const pending = request.run(
+    () => result.promise,
+    (value) => values.push(value),
+  );
+  request.cancel();
+  result.resolve("old device");
+  await pending;
+  expect(values).toEqual([]);
+  expect(states).toEqual([true, false]);
+});
diff --git a/src/latest-request.ts b/src/latest-request.ts
new file mode 100644
index 0000000..06097e8
--- /dev/null
+++ b/src/latest-request.ts
@@ -0,0 +1,33 @@
+export function createLatestRequest(callbacks: {
+  pending(value: boolean): void;
+  error(cause: unknown): void;
+}) {
+  let current: AbortController | undefined;
+  return {
+    async run<Value>(
+      action: (signal: AbortSignal) => Promise<Value>,
+      apply: (value: Value) => void,
+    ) {
+      current?.abort();
+      const request = new AbortController();
+      current = request;
+      callbacks.pending(true);
+      try {
+        const value = await action(request.signal);
+        if (current === request) apply(value);
+      } catch (cause) {
+        if (current === request && !request.signal.aborted) callbacks.error(cause);
+      } finally {
+        if (current === request) {
+          current = undefined;
+          callbacks.pending(false);
+        }
+      }
+    },
+    cancel() {
+      current?.abort();
+      current = undefined;
+      callbacks.pending(false);
+    },
+  };
+}
diff --git a/src/main.test.ts b/src/main.test.ts
index c53d715..c6369ed 100644
--- a/src/main.test.ts
+++ b/src/main.test.ts
@@ -129,6 +129,15 @@ test("routes every operation through the controller and returns typed failures",
     ),
   ).toMatchObject({ type: "success", value: { type: "apps", apps: [] } });
   expect(item.calls).toEqual(["open", "apps"]);
+  await expect(
+    runOperation(
+      controller,
+      caller,
+      { type: "open", platform: "ios", deviceId: "iphone" },
+      "manual",
+      AbortSignal.abort(),
+    ),
+  ).resolves.toMatchObject({ type: "failure", error: { code: "detached" } });
   await controller.dispose();
 });
 
diff --git a/src/main.ts b/src/main.ts
index b7387fd..daa427e 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -279,13 +279,16 @@ export function createMainSetup(
         const connection = connections.get(connectionKey(input));
         return connection ? unsubscribe(connection, ipcCaller.window) : Promise.resolve();
       },
-      list: async (input) =>
+      list: async (input, ipcCaller) =>
         deviceOutcome(async () => {
           requireLocal(input.serverID);
           const owner = input.sessionID
             ? { serverID: input.serverID, sessionID: input.sessionID }
             : undefined;
-          return { type: "devices", devices: await getController().list(input.platform, owner) };
+          return {
+            type: "devices",
+            devices: await getController().list(input.platform, owner, ipcCaller.signal),
+          };
         }),
       access: async (input, ipcCaller) => {
         const connection = current(input.scope, ipcCaller.window);
@@ -364,7 +367,10 @@ export async function runOperation(
     signal?.throwIfAborted();
     switch (operation.type) {
       case "list":
-        return { type: "devices", devices: await controller.list(operation.platform, caller) };
+        return {
+          type: "devices",
+          devices: await controller.list(operation.platform, caller, signal),
+        };
       case "state":
         return { type: "state", state: controller.state(caller) };
       case "open":
@@ -403,6 +409,12 @@ async function deviceStreamOutcome(
 
 function failure(error: unknown) {
   if (isDeviceFailure(error)) return error.data;
+  if (error instanceof Error && error.name === "AbortError")
+    return {
+      code: "detached" as const,
+      message: "The pending device request was cancelled.",
+      mayHaveExecuted: false,
+    };
   return {
     code: "internal" as const,
     message: String(error).slice(0, 2_048),
diff --git a/src/native/adb.ts b/src/native/adb.ts
new file mode 100644
index 0000000..da90702
--- /dev/null
+++ b/src/native/adb.ts
@@ -0,0 +1,24 @@
+import type { Device } from "../rpc.js";
+
+export interface AdbDevice {
+  serial: string;
+  state: string;
+}
+
+export function parseAdbDevices(output: string): AdbDevice[] {
+  return output
+    .split("\n")
+    .slice(1)
+    .map((line) => line.trim())
+    .filter((line) => line.length > 0 && !line.startsWith("*"))
+    .flatMap((line) => {
+      const [serial, state] = line.split(/\s+/u);
+      return serial && state ? [{ serial, state }] : [];
+    });
+}
+
+export function adbState(state: string): Device.DeviceState {
+  if (state === "device") return "booted";
+  if (state === "offline" || state === "connecting" || state === "authorizing") return "booting";
+  return "unavailable";
+}
diff --git a/src/native/android.ts b/src/native/android.ts
index 8516fe9..eeff824 100644
--- a/src/native/android.ts
+++ b/src/native/android.ts
@@ -2,6 +2,7 @@ import { homedir } from "node:os";
 import { createServer, type Socket } from "node:net";
 import { posix, win32 } from "node:path";
 import { deviceError } from "./errors.js";
+import { parseAdbDevices } from "./adb.js";
 import {
   appendBounded,
   runCommand,
@@ -10,9 +11,7 @@ import {
   type LongRunningProcess,
 } from "./process.js";
 
-// Android emulator lifecycle. Discovery names an AVD; attachment must turn that into a booted adb serial. Booting is
-// explicit and only happens when the caller asked for it, and the runtime records whether it booted the emulator so it
-// can shut down only what it started and never a device the user was already running.
+// Resolve AVD names to adb serials. Booting is explicit, and cancellation stops only the emulator this call started.
 
 export interface AndroidOptions {
   androidSdkRoot?: string;
@@ -40,6 +39,14 @@ export function resolveAndroidSdkRoot(
   const home = options.home ?? homedir();
   const configured = options.root ?? (env["ANDROID_HOME"] || env["ANDROID_SDK_ROOT"]);
   if (configured) return configured;
+  return defaultSdkRoot(platform, env, home);
+}
+
+function defaultSdkRoot(
+  platform: NodeJS.Platform,
+  env: NodeJS.ProcessEnv,
+  home: string,
+): string | undefined {
   if (platform === "darwin") return posix.join(home, "Library", "Android", "sdk");
   if (platform === "linux") return posix.join(home, "Android", "Sdk");
   if (platform === "win32")
@@ -94,12 +101,9 @@ async function resolveRunningSerial(
   const timeoutMs = options.timeoutMs ?? 20_000;
   const adb = androidToolPath("adb", options.androidSdkRoot);
   const devices = await run({ command: adb, args: ["devices"], timeoutMs });
-  const serials = devices.stdout
-    .split("\n")
-    .slice(1)
-    .map((line) => line.trim().split(/\s+/u))
-    .filter(([serial, state]) => serial?.startsWith("emulator-") && state === "device")
-    .map(([serial]) => serial);
+  const serials = parseAdbDevices(devices.stdout)
+    .filter((device) => device.serial.startsWith("emulator-") && device.state === "device")
+    .map((device) => device.serial);
   for (const serial of serials) {
     if (expectedSerial && serial !== expectedSerial) continue;
     const name = await run({
@@ -120,10 +124,15 @@ export async function ensureBooted(
     run?: typeof runCommand;
     spawn?: typeof spawnProcess;
     pollIntervalMs?: number;
+    signal?: AbortSignal;
   } = {},
 ): Promise<BootedDevice> {
   const run = dependencies.run ?? runCommand;
-  const existing = await resolveRunningSerial(options, avdName, run);
+  dependencies.signal?.throwIfAborted();
+  const existing = await resolveRunningSerial(options, avdName, (spec) =>
+    run({ ...spec, signal: dependencies.signal }),
+  );
+  dependencies.signal?.throwIfAborted();
   if (existing) return { serial: existing, bootedByUs: false };
   if (!bootIntent) {
     throw deviceError(
@@ -134,9 +143,14 @@ export async function ensureBooted(
   const bootTimeoutMs = options.timeoutMs ?? 180_000;
   const report = await consoleReport();
   const abort = new AbortController();
+  const signal = dependencies.signal
+    ? AbortSignal.any([abort.signal, dependencies.signal])
+    : abort.signal;
+  const bootRun: typeof runCommand = (spec) => run({ ...spec, signal });
   let child: LongRunningProcess | undefined;
   let stderr = "";
   try {
+    signal.throwIfAborted();
     child = (dependencies.spawn ?? spawnProcess)({
       command: androidToolPath("emulator", options.androidSdkRoot),
       args: ["-avd", avdName, "-no-window", "-no-boot-anim", "-report-console", report.address],
@@ -158,11 +172,11 @@ export async function ensureBooted(
       const serial = await poll(
         () =>
           report.serial
-            ? resolveRunningSerial(options, avdName, run, report.serial)
+            ? resolveRunningSerial(options, avdName, bootRun, report.serial)
             : Promise.resolve(null),
         (value) => value !== null,
         bootTimeoutMs,
-        abort.signal,
+        signal,
         dependencies.pollIntervalMs,
       );
       if (!serial)
@@ -171,8 +185,8 @@ export async function ensureBooted(
         options,
         serial,
         bootTimeoutMs,
-        run,
-        abort.signal,
+        bootRun,
+        signal,
         dependencies.pollIntervalMs,
       );
       return { serial, bootedByUs: true, process };
@@ -290,7 +304,9 @@ async function poll<T>(
   intervalMs = 2_000,
 ): Promise<T> {
   const deadline = Date.now() + timeoutMs;
+  signal?.throwIfAborted();
   let value = await produce();
+  signal?.throwIfAborted();
   while (!done(value) && Date.now() < deadline) {
     signal?.throwIfAborted();
     await new Promise<void>((resolve, reject) => {
@@ -309,6 +325,7 @@ async function poll<T>(
     });
     signal?.throwIfAborted();
     value = await produce();
+    signal?.throwIfAborted();
   }
   return value;
 }
diff --git a/src/native/automation.ts b/src/native/automation.ts
index 0b9a1e1..9d8ff03 100644
--- a/src/native/automation.ts
+++ b/src/native/automation.ts
@@ -88,6 +88,8 @@ const SnapshotReport = Schema.Struct({
 
 // Decode agent-device's bare `e<n>` ref into the contract's branded, `@`-prefixed {@link Device.ElementRef}.
 const decodeRef = Schema.decodeUnknownOption(Device.ElementRef);
+const parseRef = (ref: string | undefined) =>
+  ref ? decodeRef(ref.startsWith("@") ? ref : `@${ref}`) : Option.none();
 
 export function parseSnapshotJson(
   output: string,
@@ -97,9 +99,7 @@ export function parseSnapshotJson(
   const nodes = parsed.value.data.nodes.flatMap((node) => {
     const role = node.kind ?? node.type;
     if (!role) return [];
-    const decoded = node.ref
-      ? decodeRef(node.ref.startsWith("@") ? node.ref : `@${node.ref}`)
-      : Option.none();
+    const decoded = parseRef(node.ref);
     const result: Device.AccessibilityNode = {
       role,
       ...(Option.isSome(decoded) ? { ref: decoded.value } : {}),
@@ -218,7 +218,7 @@ export function parseFailure(
 }
 
 export interface Automation {
-  run(args: readonly string[], timeoutMs?: number): Promise<CommandResult>;
+  run(args: readonly string[], timeoutMs?: number, signal?: AbortSignal): Promise<CommandResult>;
   // Map a non-zero result to a typed device error. `mayHaveExecuted` marks a mutation that was already dispatched.
   require(result: CommandResult, action: string, mayHaveExecuted?: boolean): CommandResult;
 }
@@ -233,7 +233,7 @@ export function createAutomation(options: AutomationOptions): Automation {
     options.platform === "android" ? "--serial" : "--udid",
     options.deviceId,
   ];
-  const run: Automation["run"] = (args, timeoutMs) =>
+  const run: Automation["run"] = (args, timeoutMs, signal) =>
     runCommand({
       command: options.externalNode,
       // `--json` makes failures structured, so their code and dispatch certainty survive.
@@ -246,6 +246,7 @@ export function createAutomation(options: AutomationOptions): Automation {
       cwd: options.stateDir,
       env: options.env,
       timeoutMs: timeoutMs ?? timeout,
+      signal,
     });
   const require: Automation["require"] = (result, action, mayHaveExecuted = false) => {
     if (result.timedOut) throw deviceError("timeout", `${action} timed out.`, mayHaveExecuted);
diff --git a/src/native/backends.ts b/src/native/backends.ts
index cc8db94..e0a6ce7 100644
--- a/src/native/backends.ts
+++ b/src/native/backends.ts
@@ -4,19 +4,24 @@ import { androidDevices } from "./discovery.js";
 import { sendGesture } from "./hub.js";
 import { ensureSimulatorBooted, iosDevices, shutdownSimulator } from "./ios.js";
 import * as ServeSim from "./serve-sim.js";
+import * as ServeEmu from "./serve-emu.js";
 import type { ScreenPoint } from "./serve-sim.js";
 
 // Everything that differs between Android emulators and iOS simulators. The runtime owns helpers, the hub, handles,
 // and automation the same way for both platforms and delegates only these steps to the device's backend.
 export interface PlatformBackend {
-  list(): Promise<Device.DeviceInfo[]>;
+  list(signal?: AbortSignal): Promise<Device.DeviceInfo[]>;
   // Resolve a discovery id to the booted device id the helpers pin to, booting only when asked.
-  ensureBooted(id: string, boot: boolean): Promise<{ deviceId: string; bootedByUs: boolean }>;
+  ensureBooted(
+    id: string,
+    boot: boolean,
+    signal?: AbortSignal,
+  ): Promise<{ deviceId: string; bootedByUs: boolean }>;
   shutdown(deviceId: string): Promise<void>;
   // Extra environment for the hub and automation helpers.
   readonly env: Record<string, string> | undefined;
   // Resolves once the hub serves the device's screen.
-  streamReady(stream: Device.StreamDescriptor): Promise<void>;
+  streamReady(stream: Device.StreamDescriptor, signal?: AbortSignal): Promise<void>;
   tap(stream: Device.StreamDescriptor, point: ScreenPoint): Promise<void>;
   swipe(stream: Device.StreamDescriptor, from: ScreenPoint, to: ScreenPoint): Promise<void>;
   // Press a key through the hub, resolving false when the automation engine should handle it instead.
@@ -26,14 +31,14 @@ export interface PlatformBackend {
 export function androidBackend(androidSdkRoot: string | undefined): PlatformBackend {
   const options = { androidSdkRoot };
   return {
-    list: () => androidDevices(options),
-    ensureBooted: async (id, boot) => {
-      const { serial, bootedByUs } = await ensureBooted(options, id, boot);
+    list: (signal) => androidDevices({ ...options, signal }),
+    ensureBooted: async (id, boot, signal) => {
+      const { serial, bootedByUs } = await ensureBooted(options, id, boot, { signal });
       return { deviceId: serial, bootedByUs };
     },
     shutdown: (serial) => shutdownEmulator(options, serial),
     env: androidHelperEnv(androidSdkRoot),
-    streamReady: async () => undefined,
+    streamReady: (stream, signal) => ServeEmu.waitForScreen(stream, { signal }),
     tap: (stream, point) => sendGesture(stream, { type: "tap", ...point }),
     swipe: (stream, from, to) =>
       sendGesture(stream, {
@@ -50,11 +55,11 @@ export function androidBackend(androidSdkRoot: string | undefined): PlatformBack
 
 export function iosBackend(): PlatformBackend {
   return {
-    list: () => iosDevices(),
-    ensureBooted: (udid, boot) => ensureSimulatorBooted({}, udid, boot),
+    list: (signal) => iosDevices({ signal }),
+    ensureBooted: (udid, boot, signal) => ensureSimulatorBooted({ signal }, udid, boot),
     shutdown: (udid) => shutdownSimulator({}, udid),
     env: undefined,
-    streamReady: (stream) => ServeSim.waitForScreen(stream),
+    streamReady: (stream, signal) => ServeSim.waitForScreen(stream, { signal }),
     tap: ServeSim.tap,
     swipe: ServeSim.swipe,
     // The automation engine cannot press lock or volume on a simulator, so hardware buttons go through the hub.
diff --git a/src/native/discovery.ts b/src/native/discovery.ts
index e7e5bc5..cbd8ab2 100644
--- a/src/native/discovery.ts
+++ b/src/native/discovery.ts
@@ -2,38 +2,16 @@ import type { Device } from "../rpc.js";
 import { deviceError } from "./errors.js";
 import { runCommand } from "./process.js";
 import { androidToolPath } from "./android.js";
+import { adbState, parseAdbDevices, type AdbDevice } from "./adb.js";
+export { adbState, parseAdbDevices } from "./adb.js";
+export type { AdbDevice } from "./adb.js";
 
 // Listing reads `adb` and `emulator` directly, so it never boots a device or starts the hub.
 
 export interface DiscoveryOptions {
   androidSdkRoot?: string;
   timeoutMs?: number;
-}
-
-// One line of `adb devices`: a serial and its connection state.
-export interface AdbDevice {
-  serial: string;
-  state: string;
-}
-
-// Parse `adb devices` output into serial/state pairs, skipping its header and blank lines.
-export function parseAdbDevices(output: string): AdbDevice[] {
-  return output
-    .split("\n")
-    .slice(1)
-    .map((line) => line.trim())
-    .filter((line) => line.length > 0 && !line.startsWith("*"))
-    .flatMap((line) => {
-      const [serial, state] = line.split(/\s+/u);
-      return serial && state ? [{ serial, state }] : [];
-    });
-}
-
-// Map an adb connection state to the contract's device state.
-export function adbState(state: string): Device.DeviceState {
-  if (state === "device") return "booted";
-  if (state === "offline" || state === "connecting" || state === "authorizing") return "booting";
-  return "unavailable";
+  signal?: AbortSignal;
 }
 
 // List Android devices: every AVD as a discovery entry, marked booted when a running emulator reports that AVD name.
@@ -43,8 +21,8 @@ export async function androidDevices(options: DiscoveryOptions): Promise<Device.
   const adb = androidToolPath("adb", options.androidSdkRoot);
   const emulator = androidToolPath("emulator", options.androidSdkRoot);
   const [avdList, deviceList] = await Promise.all([
-    runCommand({ command: emulator, args: ["-list-avds"], timeoutMs }),
-    runCommand({ command: adb, args: ["devices"], timeoutMs }),
+    runCommand({ command: emulator, args: ["-list-avds"], timeoutMs, signal: options.signal }),
+    runCommand({ command: adb, args: ["devices"], timeoutMs, signal: options.signal }),
   ]);
   if (avdList.code !== 0)
     throw deviceError(
@@ -64,14 +42,20 @@ export async function androidDevices(options: DiscoveryOptions): Promise<Device.
     device.serial.startsWith("emulator-"),
   );
   const runningAvds = new Map<string, AdbDevice>();
-  for (const device of running) {
-    const name = await runCommand({
-      command: adb,
-      args: ["-s", device.serial, "emu", "avd", "name"],
-      timeoutMs,
-    });
-    const avd = name.stdout.split("\n")[0]?.trim();
-    if (avd) runningAvds.set(avd, device);
+  // Resolve names concurrently without spawning an unbounded fleet of adb processes.
+  for (let offset = 0; offset < running.length; offset += 4) {
+    await Promise.all(
+      running.slice(offset, offset + 4).map(async (device) => {
+        const name = await runCommand({
+          command: adb,
+          args: ["-s", device.serial, "emu", "avd", "name"],
+          timeoutMs,
+          signal: options.signal,
+        });
+        const avd = name.stdout.split("\n")[0]?.trim();
+        if (avd) runningAvds.set(avd, device);
+      }),
+    );
   }
   return avds.map((avd) => {
     const device = runningAvds.get(avd);
diff --git a/src/native/errors.ts b/src/native/errors.ts
index 7b8df3b..ba94019 100644
--- a/src/native/errors.ts
+++ b/src/native/errors.ts
@@ -1,8 +1,6 @@
 import { Device } from "../rpc.js";
 
-// The runtime's typed failure. Every rejected runtime operation rejects with a {@link DeviceFailure}, so a caller reads
-// a stable {@link Device.DeviceErrorCode}, a human-readable message, and whether the native action may already have run,
-// instead of inspecting an opaque `Error`. `data` is exactly the {@link Device.DeviceError} that crosses the wire.
+// Preserve the error code, message, and dispatch certainty across the device RPC boundary.
 export class DeviceFailure extends Error {
   readonly code: Device.DeviceErrorCode;
   readonly mayHaveExecuted: boolean;
@@ -20,7 +18,7 @@ export class DeviceFailure extends Error {
   }
 }
 
-// Build a {@link DeviceFailure}. `mayHaveExecuted` defaults to false; callers set it true after dispatching a mutation.
+// Mark mutations that were dispatched before failure so callers do not mistake their outcome for a clean cancellation.
 export function deviceError(
   code: Device.DeviceErrorCode,
   message: string,
diff --git a/src/native/handle.ts b/src/native/handle.ts
index 5ea7153..f196cf0 100644
--- a/src/native/handle.ts
+++ b/src/native/handle.ts
@@ -2,10 +2,7 @@ import { randomUUID } from "node:crypto";
 import { Device } from "../rpc.js";
 import { deviceError } from "./errors.js";
 
-// The handle and reference registry. A handle binds an opaque token to one platform, device, and connection
-// generation; a snapshot reference additionally carries the revision it came from. The registry is the single authority
-// that decides whether a handle is still attached and whether a reference is still valid, so a stale generation or an
-// out-of-date snapshot reference is rejected before any native command is dispatched.
+// Bind handles to devices and connection generations. Snapshot revisions prevent input against stale screen contents.
 
 interface ActiveHandle {
   handle: Device.DeviceHandle;
@@ -38,14 +35,7 @@ export class HandleRegistry {
 
   // Resolve an attached handle, or reject with `detached` when its token or generation no longer matches.
   require(handle: Device.DeviceHandle): Device.DeviceHandle {
-    const entry = this.active.get(handle.token);
-    if (!entry || entry.handle.generation !== handle.generation) {
-      throw deviceError(
-        "detached",
-        "This device handle is no longer attached; open the device again.",
-      );
-    }
-    return entry.handle;
+    return this.entry(handle).handle;
   }
 
   // The current snapshot revision for an attached handle.
@@ -66,13 +56,12 @@ export class HandleRegistry {
   }
 
   // Resolve a snapshot reference to its element ref, rejecting a reference whose attachment is gone (`detached`) or
-  // whose revision a newer snapshot, relaunch, or reconnect has superseded (`stale-reference`). When a `handle` is
-  // passed, the reference must also belong to exactly that attachment, so an element ref captured on one device can
-  // never be dispatched against another device the caller named.
+  // whose revision has been superseded (`stale-reference`). A supplied handle must name that same attachment.
   resolveReference(
     reference: Device.SnapshotReference,
     handle?: Device.DeviceHandle,
   ): Device.ElementRef {
+    if (handle) this.require(handle);
     if (
       handle &&
       (reference.token !== handle.token || reference.generation !== handle.generation)
@@ -105,12 +94,14 @@ export class HandleRegistry {
 
   // Release an attachment. A released token can never be revived; a new connection requires a new handle.
   release(handle: Device.DeviceHandle): void {
+    if (!this.active.has(handle.token)) return;
+    this.require(handle);
     this.active.delete(handle.token);
   }
 
   private entry(handle: Device.DeviceHandle): ActiveHandle {
     const entry = this.active.get(handle.token);
-    if (!entry || entry.handle.generation !== handle.generation) {
+    if (!entry || !Device.sameHandle(entry.handle, handle)) {
       throw deviceError(
         "detached",
         "This device handle is no longer attached; open the device again.",
diff --git a/src/native/helpers.ts b/src/native/helpers.ts
index 3ee1146..ac85582 100644
--- a/src/native/helpers.ts
+++ b/src/native/helpers.ts
@@ -2,10 +2,11 @@ import { readFile, access, mkdir, readdir, realpath, rm, writeFile, lstat } from
 import { createHash } from "node:crypto";
 import { homedir } from "node:os";
 import { join, posix, win32, relative, isAbsolute, sep } from "node:path";
+import type { Stats } from "node:fs";
 import { Option, Schema } from "effect";
 import { deviceError } from "./errors.js";
 import { parseJson } from "./json.js";
-import { runCommand } from "./process.js";
+import { runCommand, type CommandResult } from "./process.js";
 import helperPackage from "./helper-package.json" with { type: "json" };
 import helperLock from "./helper-lock.json" with { type: "json" };
 
@@ -52,11 +53,7 @@ async function trustedPath(root: string, path: string): Promise<boolean> {
       throw error;
     });
     if (!metadata) return false;
-    if (
-      metadata.isSymbolicLink() ||
-      (current === path ? !metadata.isFile() : !metadata.isDirectory()) ||
-      (process.getuid && (metadata.uid !== process.getuid() || (metadata.mode & 0o022) !== 0))
-    )
+    if (!secureEntry(metadata, current === path))
       throw deviceError(
         "missing-prerequisite",
         "A device helper path is symlinked or not owned securely by the current user.",
@@ -65,6 +62,13 @@ async function trustedPath(root: string, path: string): Promise<boolean> {
   return true;
 }
 
+function secureEntry(metadata: Stats, file: boolean): boolean {
+  if (metadata.isSymbolicLink()) return false;
+  if (file ? !metadata.isFile() : !metadata.isDirectory()) return false;
+  const uid = process.getuid?.();
+  return uid === undefined || (metadata.uid === uid && (metadata.mode & 0o022) === 0);
+}
+
 export function parseNodeVersion(output: string) {
   const match = output.match(/v?(\d+)\.(\d+)\.(\d+)/u);
   return match ? `${match[1]}.${match[2]}.${match[3]}` : null;
@@ -132,13 +136,7 @@ export async function ensureHelpers(
     [pathKey]: [paths.dirname(node), process.env[pathKey] ?? ""].join(paths.delimiter),
   };
   const result = await runCommand({ command, args, timeoutMs, cwd: projectDir, env });
-  if (result.code !== 0) {
-    const reason = result.spawnError ?? result.stderr.split("\n").slice(-3).join(" ").trim();
-    throw deviceError(
-      "missing-prerequisite",
-      `Installing the device helpers failed: ${reason || "npm install failed"}`,
-    );
-  }
+  requireInstall(result);
   const resolved = await resolveHelperPaths(dir);
   if (!resolved)
     throw deviceError(
@@ -149,6 +147,15 @@ export async function ensureHelpers(
   return resolved;
 }
 
+function requireInstall(result: CommandResult): void {
+  if (result.code === 0) return;
+  const reason = result.spawnError ?? result.stderr.split("\n").slice(-3).join(" ").trim();
+  throw deviceError(
+    "missing-prerequisite",
+    `Installing the device helpers failed: ${reason || "npm install failed"}`,
+  );
+}
+
 // Resolve both helper CLI entry files from an existing install, or null when either is not installed.
 export async function resolveHelperPaths(dir: string): Promise<HelperPaths | null> {
   await validateHelperDirectory(dir);
@@ -173,27 +180,37 @@ async function resolveBin(dir: string, pkg: keyof typeof PINS): Promise<string |
   const manifest = parseJson(BinManifest, raw);
   if (Option.isNone(manifest) || manifest.value.version !== PINS[pkg]) return null;
   const bin = manifest.value.bin;
-  const relative =
-    typeof bin === "string" ? bin : bin ? (bin[pkg] ?? Object.values(bin)[0]) : undefined;
+  const relative = manifestBin(bin, pkg);
   if (!relative) return null;
   const resolved = join(root, relative);
   return (await trustedPath(root, resolved)) ? resolved : null;
 }
 
+function manifestBin(
+  bin: string | Record<string, string> | undefined,
+  name: string,
+): string | undefined {
+  if (typeof bin === "string") return bin;
+  if (bin) return bin[name] ?? Object.values(bin)[0];
+}
+
 // Resolve the external Node binary the helpers run under and verify it meets the automation engine's minimum. The
 // candidate comes from the explicit option, then `OPENCODE_DEVICE_NODE`, then PATH with installed NVM versions as fallback.
 export async function resolveExternalNode(candidate?: string, timeoutMs = 10_000): Promise<string> {
-  const node = candidate ?? process.env["OPENCODE_DEVICE_NODE"] ?? "node";
-  const result = await runCommand({ command: node, args: ["--version"], timeoutMs });
-  const version = parseNodeVersion(result.stdout) ?? parseNodeVersion(result.stderr);
-  if (
-    candidate === undefined &&
-    process.env["OPENCODE_DEVICE_NODE"] === undefined &&
-    (result.code !== 0 || !version || !satisfiesNode(version))
-  ) {
+  const configured = candidate ?? process.env["OPENCODE_DEVICE_NODE"];
+  try {
+    return await validateExternalNode(configured ?? "node", timeoutMs);
+  } catch (error) {
+    if (configured !== undefined) throw error;
     const installed = await nvmNodeCandidates(process.env["NVM_DIR"] ?? join(homedir(), ".nvm"));
-    if (installed[0]) return resolveExternalNode(installed[0], timeoutMs);
+    if (installed[0]) return validateExternalNode(installed[0], timeoutMs);
+    throw error;
   }
+}
+
+async function validateExternalNode(node: string, timeoutMs: number): Promise<string> {
+  const result = await runCommand({ command: node, args: ["--version"], timeoutMs });
+  const version = parseNodeVersion(result.stdout) ?? parseNodeVersion(result.stderr);
   if (result.code !== 0 || !version) {
     const reason = result.spawnError ?? result.stderr.trim();
     throw deviceError(
diff --git a/src/native/hub.ts b/src/native/hub.ts
index fc03d1d..57dc2e4 100644
--- a/src/native/hub.ts
+++ b/src/native/hub.ts
@@ -45,6 +45,7 @@ export interface HubOptions {
   stopGraceMs?: number;
   stopKillMs?: number;
   env?: Record<string, string>;
+  signal?: AbortSignal;
 }
 
 // The hub's ready endpoint: a loopback origin and the session token minted by `--require-token`.
@@ -73,6 +74,7 @@ export function hubArgs(options: HubOptions): string[] {
     options.platform,
     "--single-device",
     options.deviceId,
+    ...(options.platform === "android" ? ["--stream-source", "scrcpy"] : []),
   ];
 }
 
@@ -109,6 +111,7 @@ export interface HubSession {
 }
 
 export function startHub(options: HubOptions, spawn = spawnProcess): Promise<HubSession> {
+  if (options.signal?.aborted) return Promise.reject(options.signal.reason);
   const readyTimeoutMs = options.readyTimeoutMs ?? 60_000;
   return new Promise<HubSession>((resolve, reject) => {
     let settled = false;
@@ -127,24 +130,23 @@ export function startHub(options: HubOptions, spawn = spawnProcess): Promise<Hub
       },
     });
     const timer = setTimeout(() => {
-      if (settled) return;
-      finish(() => {
-        void stop().then(
-          () =>
-            reject(
-              deviceError("timeout", "The device hub did not become ready within the deadline."),
-            ),
-          reject,
-        );
-      });
+      fail(deviceError("timeout", "The device hub did not become ready within the deadline."));
     }, readyTimeoutMs);
     const stop = () => stopProcess(process, options.stopGraceMs, options.stopKillMs);
     const finish = (action: () => void) => {
       if (settled) return;
       settled = true;
       clearTimeout(timer);
+      options.signal?.removeEventListener("abort", abort);
       action();
     };
+    const fail = (error: unknown) =>
+      finish(() => {
+        void stop().then(() => reject(error), reject);
+      });
+    const abort = () => fail(options.signal?.reason);
+    options.signal?.addEventListener("abort", abort, { once: true });
+    if (options.signal?.aborted) abort();
     const finishReady = (value: HubReady) =>
       finish(() =>
         resolve({
diff --git a/src/native/ios.test.ts b/src/native/ios.test.ts
index 618b2b7..8f7658f 100644
--- a/src/native/ios.test.ts
+++ b/src/native/ios.test.ts
@@ -106,6 +106,30 @@ test("an already booted simulator is not booted again or owned by this call", as
   expect(fake.commands.map((spec) => spec.args)).toEqual([LIST_ARGS]);
 });
 
+test.each(["Shutdown", "Booting"])(
+  "cancelling bootstatus stops waiting and shuts down only a simulator we booted: %s",
+  async (state) => {
+    const abort = new AbortController();
+    const reason = new Error("selection changed");
+    const fake = fakeRun([result({ stdout: deviceList(state) }), result(), result(), result()]);
+    const run = async (spec: CommandSpec) => {
+      const value = await fake.run(spec);
+      if (spec.args.includes("bootstatus")) {
+        expect(spec.signal).toBe(abort.signal);
+        abort.abort(reason);
+        throw reason;
+      }
+      return value;
+    };
+    await expect(ensureSimulatorBooted({ signal: abort.signal }, UDID, true, run)).rejects.toBe(
+      reason,
+    );
+    const shutdown = fake.commands.find((spec) => spec.args.includes("shutdown"));
+    expect(!!shutdown).toBe(state === "Shutdown");
+    expect(shutdown?.signal).toBeUndefined();
+  },
+);
+
 test("a shut down simulator requires explicit boot intent", async () => {
   const fake = fakeRun([result({ stdout: deviceList("Shutdown") })]);
   await expect(ensureSimulatorBooted({}, UDID, false, fake.run)).rejects.toMatchObject({
diff --git a/src/native/ios.ts b/src/native/ios.ts
index 752fc62..55bf109 100644
--- a/src/native/ios.ts
+++ b/src/native/ios.ts
@@ -10,6 +10,7 @@ import { runCommand, type CommandResult } from "./process.js";
 
 export interface SimulatorOptions {
   timeoutMs?: number;
+  signal?: AbortSignal;
 }
 
 export interface BootedSimulator {
@@ -66,7 +67,12 @@ export async function iosDevices(
   options: SimulatorOptions = {},
   run = runCommand,
 ): Promise<Device.DeviceInfo[]> {
-  const result = await simctl(run, ["list", "devices", "available", "-j"], options.timeoutMs);
+  const result = await simctl(
+    run,
+    ["list", "devices", "available", "-j"],
+    options.timeoutMs,
+    options.signal,
+  );
   if (result.code !== 0)
     throw deviceError(
       "missing-prerequisite",
@@ -83,37 +89,55 @@ export async function ensureSimulatorBooted(
   bootIntent: boolean,
   run = runCommand,
 ): Promise<BootedSimulator> {
-  const device = (await iosDevices(options, run)).find((entry) => entry.id === udid);
-  if (!device) throw deviceError("not-found", `The simulator "${udid}" was not found.`);
+  const listed = await iosDevices(options, run);
+  options.signal?.throwIfAborted();
+  const device = simulatorForBoot(
+    listed.find((entry) => entry.id === udid),
+    udid,
+    bootIntent,
+  );
   if (device.state === "booted") return { deviceId: udid, bootedByUs: false };
-  if (device.state === "unavailable")
-    throw deviceError("unsupported", `The simulator "${device.name}" is unavailable.`);
-  if (device.state === "shutdown" && !bootIntent)
-    throw deviceError(
-      "not-found",
-      `The simulator "${device.name}" is not booted; open it with boot enabled.`,
-    );
 
   const bootTimeoutMs = options.timeoutMs ?? 180_000;
   let bootedByUs = false;
   if (device.state === "shutdown") {
+    // Finish the boot command so cancellation knows whether this call owns the simulator.
     const boot = await simctl(run, ["boot", udid], bootTimeoutMs);
     if (boot.code !== 0 && !ALREADY_BOOTED.test(boot.stderr))
       throw simctlFailure("Booting the simulator", boot);
     bootedByUs = boot.code === 0;
   }
   try {
+    options.signal?.throwIfAborted();
     requireSuccess(
       "Waiting for the simulator to boot",
-      await simctl(run, ["bootstatus", udid, "-b"], bootTimeoutMs),
+      await simctl(run, ["bootstatus", udid, "-b"], bootTimeoutMs, options.signal),
     );
+    options.signal?.throwIfAborted();
   } catch (error) {
-    if (bootedByUs) await shutdownSimulator(options, udid, run).catch(() => undefined);
+    if (bootedByUs)
+      await shutdownSimulator({ timeoutMs: options.timeoutMs }, udid, run).catch(() => undefined);
     throw error;
   }
   return { deviceId: udid, bootedByUs };
 }
 
+function simulatorForBoot(
+  device: Device.DeviceInfo | undefined,
+  udid: string,
+  boot: boolean,
+): Device.DeviceInfo {
+  if (!device) throw deviceError("not-found", `The simulator "${udid}" was not found.`);
+  if (device.state === "unavailable")
+    throw deviceError("unsupported", `The simulator "${device.name}" is unavailable.`);
+  if (device.state === "shutdown" && !boot)
+    throw deviceError(
+      "not-found",
+      `The simulator "${device.name}" is not booted; open it with boot enabled.`,
+    );
+  return device;
+}
+
 // Shut down a simulator this runtime booted. An already shut down simulator is not an error.
 export async function shutdownSimulator(
   options: SimulatorOptions,
@@ -125,8 +149,18 @@ export async function shutdownSimulator(
   requireSuccess("Shutting down the simulator", result, true);
 }
 
-function simctl(run: typeof runCommand, args: readonly string[], timeoutMs = 20_000) {
-  return run({ command: "xcrun", args: ["simctl", ...args], timeoutMs });
+function simctl(
+  run: typeof runCommand,
+  args: readonly string[],
+  timeoutMs = 20_000,
+  signal?: AbortSignal,
+) {
+  return run({
+    command: "xcrun",
+    args: ["simctl", ...args],
+    timeoutMs,
+    ...(signal ? { signal } : {}),
+  });
 }
 
 function requireSuccess(action: string, result: CommandResult, mayHaveExecuted = false) {
diff --git a/src/native/native.test.ts b/src/native/native.test.ts
index bf07c29..8793fe1 100644
--- a/src/native/native.test.ts
+++ b/src/native/native.test.ts
@@ -62,6 +62,7 @@ import {
 import { readPngDimensions } from "./png.js";
 import {
   appendBounded,
+  runCommand,
   spawnProcess,
   stopProcess,
   type CommandResult,
@@ -183,12 +184,66 @@ test("process output retains complete lines and bounds oversized partial lines",
   const lines: string[] = [];
   const child = spawnProcess({
     command: process.execPath,
-    args: ["--eval", 'process.stdout.write("first\\n" + "x".repeat(100) + "\\nlast\\n");'],
+    args: [
+      "--eval",
+      'process.stdout.write("first\\n" + "x".repeat(100) + "\\nlast\\n"); process.stderr.write("x".repeat(262144));',
+    ],
     maxBytes: 8,
     onStdoutLine: (line) => lines.push(line),
   });
   await child.exited;
   expect(lines).toEqual(["first", "xxxxxxxx", "last"]);
+  const captured = await runCommand({
+    command: process.execPath,
+    args: [
+      "--eval",
+      'const data = Buffer.from("abcdef你好"); process.stdout.write(data.subarray(0, 7)); setImmediate(() => process.stdout.write(data.subarray(7)));',
+    ],
+    maxBytes: 6,
+    timeoutMs: 1_000,
+  });
+  expect(captured.stdout).toBe("你好");
+});
+
+test("native commands leave the event loop responsive and cancellation kills the pending child", async () => {
+  const abort = new AbortController();
+  const reason = new Error("selection changed");
+  const pending = runCommand({
+    command: process.execPath,
+    args: ["--eval", "setInterval(() => {}, 1000)"],
+    timeoutMs: 5_000,
+    signal: abort.signal,
+  });
+  const outcome = pending.catch((error: unknown) => error);
+  await new Promise<void>((resolve) => setImmediate(resolve));
+  abort.abort(reason);
+  expect(await outcome).toBe(reason);
+  await expect(
+    runCommand({ command: "/must-not-spawn", args: [], timeoutMs: 5_000, signal: abort.signal }),
+  ).rejects.toBe(reason);
+});
+
+test("cancelling Android startup terminates only the emulator it spawned", async () => {
+  const abort = new AbortController();
+  const exited = Promise.withResolvers<{ code: number | null; signal: NodeJS.Signals | null }>();
+  const signals: NodeJS.Signals[] = [];
+  const pending = ensureBooted({ timeoutMs: 5_000 }, "fixture-avd", true, {
+    signal: abort.signal,
+    run: async () => ({ code: 0, signal: null, stdout: "", stderr: "", timedOut: false }),
+    spawn: () => {
+      queueMicrotask(() => abort.abort());
+      return {
+        pid: undefined,
+        exited: exited.promise,
+        stop(signal = "SIGTERM") {
+          signals.push(signal);
+          exited.resolve({ code: null, signal });
+        },
+      };
+    },
+  });
+  await expect(pending).rejects.toMatchObject({ name: "AbortError" });
+  expect(signals).toEqual(["SIGTERM"]);
 });
 
 test("Android cold boot uses only the serial reported by its own child", async () => {
@@ -788,6 +843,8 @@ test("hub arg builder pins host, token, the platform's served transport, platfor
     "android",
     "--single-device",
     "emulator-5554",
+    "--stream-source",
+    "scrcpy",
   ]);
   const ios = hubArgs({
     externalNode: "node",
@@ -1089,6 +1146,15 @@ test("HandleRegistry mints handles, bumps revisions, and enforces reference vali
   const handle = registry.create("android", "emulator-5554");
   expect(handle.generation).toBe(1);
   expect(registry.revision(handle)).toBe(0);
+  for (const forged of [
+    { ...handle, platform: "ios" as const },
+    { ...handle, deviceId: "other-device" },
+    { ...handle, generation: 2 },
+  ]) {
+    expect(() => registry.require(forged)).toThrow();
+    expect(() => registry.release(forged)).toThrow();
+  }
+  expect(registry.require(handle)).toEqual(handle);
   const revision = registry.nextSnapshot(handle);
   expect(revision).toBe(1);
   const good: Device.SnapshotReference = {
diff --git a/src/native/png.ts b/src/native/png.ts
index a54c970..430bbc9 100644
--- a/src/native/png.ts
+++ b/src/native/png.ts
@@ -1,6 +1,4 @@
-// A pure PNG header reader. The automation engine writes a screenshot to a file; the runtime reads its real width and
-// height from the image itself rather than guessing from a device profile, so the {@link Device.Screenshot} dimensions
-// match the bytes. Only the 8-byte signature and the IHDR chunk are needed, which are always first in a PNG.
+// Read screenshot dimensions from the PNG signature and IHDR header, not from a guessed device profile.
 
 const SIGNATURE = Uint8Array.of(0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a);
 
@@ -12,24 +10,13 @@ export interface PngDimensions {
 // Return a PNG's pixel dimensions, or null when the bytes are not a PNG with a readable IHDR chunk.
 export function readPngDimensions(bytes: Uint8Array): PngDimensions | null {
   if (bytes.length < 24) return null;
-  for (let index = 0; index < SIGNATURE.length; index++) {
-    if (bytes[index] !== SIGNATURE[index]) return null;
-  }
+  if (!SIGNATURE.every((byte, index) => bytes[index] === byte)) return null;
   // The IHDR chunk follows the signature: 4-byte length, the "IHDR" type, then width and height as big-endian uint32s.
   if (bytes[12] !== 0x49 || bytes[13] !== 0x48 || bytes[14] !== 0x44 || bytes[15] !== 0x52)
     return null;
-  const width = readUint32(bytes, 16);
-  const height = readUint32(bytes, 20);
+  const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
+  const width = view.getUint32(16);
+  const height = view.getUint32(20);
   if (width <= 0 || height <= 0) return null;
   return { width, height };
 }
-
-function readUint32(bytes: Uint8Array, offset: number): number {
-  return (
-    (((bytes[offset] ?? 0) << 24) |
-      ((bytes[offset + 1] ?? 0) << 16) |
-      ((bytes[offset + 2] ?? 0) << 8) |
-      (bytes[offset + 3] ?? 0)) >>>
-    0
-  );
-}
diff --git a/src/native/process.ts b/src/native/process.ts
index a0d93c4..2e9fe82 100644
--- a/src/native/process.ts
+++ b/src/native/process.ts
@@ -1,9 +1,8 @@
 import { spawn } from "node:child_process";
+import { StringDecoder } from "node:string_decoder";
 import { deviceError } from "./errors.js";
 
-// The child-process boundary for the native runtime. The plugin's Electron main process never imports a native addon;
-// it spawns the helper CLIs under an external Node runtime and talks to them here. Output is bounded so a chatty or
-// runaway helper cannot grow memory without limit, and every run has a deadline.
+// Run helpers outside Electron. Capture bounded diagnostics and enforce command and cleanup deadlines.
 
 export interface CommandSpec {
   command: string;
@@ -12,6 +11,7 @@ export interface CommandSpec {
   env?: Record<string, string>;
   // Deadline in milliseconds. On expiry the child is killed and `timedOut` is true.
   timeoutMs: number;
+  signal?: AbortSignal;
   // The maximum bytes retained per stream. Beyond this the capture is truncated, not dropped.
   maxBytes?: number;
   // Optional data to write to the child's stdin, then close it.
@@ -36,48 +36,65 @@ export function appendBounded(current: string, chunk: string, maxBytes: number):
   return combined.length <= maxBytes ? combined : combined.slice(combined.length - maxBytes);
 }
 
-// Run a command to completion and capture its bounded output. Never rejects: a missing executable, a non-zero exit, and
-// a timeout all resolve to a {@link CommandResult} the caller inspects, so the runtime maps them to typed device errors
-// rather than unwinding through exceptions.
+// Command failures return bounded diagnostics. Cancellation kills the child and rejects with the caller's reason.
 export function runCommand(spec: CommandSpec): Promise<CommandResult> {
-  const maxBytes = spec.maxBytes ?? DEFAULT_MAX_BYTES;
-  return new Promise((resolve) => {
+  if (spec.signal?.aborted) return Promise.reject(spec.signal.reason);
+  const maxBytes = Math.max(0, spec.maxBytes ?? DEFAULT_MAX_BYTES);
+  return new Promise((resolve, reject) => {
     const child = spawn(spec.command, [...spec.args], {
       cwd: spec.cwd,
       env: spec.env ? { ...process.env, ...spec.env } : process.env,
       stdio: ["pipe", "pipe", "pipe"],
     });
-    let stdout = "";
-    let stderr = "";
+    const stdout = capture(maxBytes);
+    const stderr = capture(maxBytes);
     let timedOut = false;
     let settled = false;
     const timer = setTimeout(() => {
       timedOut = true;
       child.kill("SIGKILL");
     }, spec.timeoutMs);
-    const finish = (result: CommandResult) => {
+    const abort = () => child.kill("SIGKILL");
+    spec.signal?.addEventListener("abort", abort, { once: true });
+    const finish = (result: Omit<CommandResult, "stdout" | "stderr">) => {
       if (settled) return;
       settled = true;
       clearTimeout(timer);
-      resolve(result);
+      spec.signal?.removeEventListener("abort", abort);
+      if (spec.signal?.aborted) reject(spec.signal.reason);
+      else resolve({ ...result, stdout: stdout.text(), stderr: stderr.text() });
     };
-    child.stdout?.on(
-      "data",
-      (chunk: Buffer) => (stdout = appendBounded(stdout, chunk.toString("utf8"), maxBytes)),
-    );
-    child.stderr?.on(
-      "data",
-      (chunk: Buffer) => (stderr = appendBounded(stderr, chunk.toString("utf8"), maxBytes)),
-    );
+    child.stdout?.on("data", (chunk: Buffer) => stdout.append(chunk));
+    child.stderr?.on("data", (chunk: Buffer) => stderr.append(chunk));
     child.on("error", (error) =>
-      finish({ code: null, signal: null, stdout, stderr, timedOut, spawnError: error.message }),
+      finish({ code: null, signal: null, timedOut, spawnError: error.message }),
     );
-    child.on("close", (code, signal) => finish({ code, signal, stdout, stderr, timedOut }));
+    child.on("close", (code, signal) => finish({ code, signal, timedOut }));
     if (spec.input !== undefined) child.stdin?.end(spec.input);
     else child.stdin?.end();
   });
 }
 
+// Keep bounded byte chunks and decode once, avoiding repeated large string copies and split UTF-8 characters.
+function capture(limit: number) {
+  const chunks: Buffer[] = [];
+  let size = 0;
+  return {
+    append(chunk: Buffer) {
+      chunks.push(chunk);
+      size += chunk.byteLength;
+      while (size > limit) {
+        const first = chunks[0];
+        const remove = Math.min(first.byteLength, size - limit);
+        if (remove === first.byteLength) chunks.shift();
+        else chunks[0] = first.subarray(remove);
+        size -= remove;
+      }
+    },
+    text: () => Buffer.concat(chunks, size).toString("utf8"),
+  };
+}
+
 export interface LongRunningProcess {
   readonly pid: number | undefined;
   // Resolves when the process exits, with its code and signal.
@@ -135,7 +152,7 @@ async function waitForExit(process: LongRunningProcess, timeoutMs: number): Prom
   }
 }
 
-export interface SpawnSpec extends Omit<CommandSpec, "timeoutMs" | "input"> {
+export interface SpawnSpec extends Omit<CommandSpec, "timeoutMs" | "input" | "signal"> {
   // Called for each newline-delimited line the process writes to stdout.
   onStdoutLine?: (line: string) => void;
   // Called for each newline-delimited line the process writes to stderr.
@@ -179,10 +196,15 @@ function lineReader(
   onLine?: (line: string) => void,
   maxBytes = DEFAULT_MAX_BYTES,
 ) {
-  if (!stream || !onLine) return;
+  if (!stream) return;
+  if (!onLine) {
+    stream.resume();
+    return;
+  }
   let buffer = "";
+  const decoder = new StringDecoder("utf8");
   stream.on("data", (chunk: Buffer) => {
-    buffer += chunk.toString("utf8");
+    buffer += decoder.write(chunk);
     let index = buffer.indexOf("\n");
     while (index !== -1) {
       onLine(appendBounded("", buffer.slice(0, index).replace(/\r$/u, ""), maxBytes));
@@ -192,6 +214,7 @@ function lineReader(
     buffer = appendBounded("", buffer, maxBytes);
   });
   stream.on("close", () => {
+    buffer = appendBounded(buffer, decoder.end(), maxBytes);
     if (buffer.length > 0) onLine(buffer.replace(/\r$/u, ""));
   });
 }
diff --git a/src/native/runtime.ts b/src/native/runtime.ts
index f351400..9a3a799 100644
--- a/src/native/runtime.ts
+++ b/src/native/runtime.ts
@@ -1,4 +1,4 @@
-import { mkdir, readFile, rm } from "node:fs/promises";
+import { lstat, mkdir, readFile, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { Device } from "../rpc.js";
@@ -36,8 +36,8 @@ import { startHub, type HubSession } from "./hub.js";
 import { readPngDimensions } from "./png.js";
 
 export interface DeviceRuntime {
-  list(platform?: Device.Platform): Promise<Device.DeviceInfo[]>;
-  open(input: OpenInput): Promise<OpenResult>;
+  list(platform?: Device.Platform, signal?: AbortSignal): Promise<Device.DeviceInfo[]>;
+  open(input: OpenInput, signal?: AbortSignal): Promise<OpenResult>;
   apps(handle: Device.DeviceHandle): Promise<Device.AppInfo[]>;
   launch(input: LaunchInput): Promise<Device.LaunchResult>;
   install(input: InstallInput): Promise<Device.InstallResult>;
@@ -155,11 +155,15 @@ export function createNativeRuntime(options: RuntimeOptions = {}): DeviceRuntime
   };
 
   return {
-    async list(platform) {
-      if (platform) return backendFor(platform).list();
+    async list(platform, signal) {
+      signal?.throwIfAborted();
+      if (platform) return backendFor(platform).list(signal);
       const platforms = Object.keys(backends) as Device.Platform[];
       // One platform's missing toolchain must not hide the other platform's devices.
-      const results = await Promise.allSettled(platforms.map((entry) => backendFor(entry).list()));
+      const results = await Promise.allSettled(
+        platforms.map((entry) => backendFor(entry).list(signal)),
+      );
+      signal?.throwIfAborted();
       const listed = results.flatMap((result) =>
         result.status === "fulfilled" ? result.value : [],
       );
@@ -170,19 +174,23 @@ export function createNativeRuntime(options: RuntimeOptions = {}): DeviceRuntime
       return listed;
     },
 
-    async open(input) {
+    async open(input, signal) {
+      signal?.throwIfAborted();
       const backend = backendFor(input.platform);
       const externalNode = await node();
       const paths = await helpers(externalNode);
+      signal?.throwIfAborted();
       const { deviceId, bootedByUs } = await backend.ensureBooted(
         input.deviceId,
         input.boot ?? false,
+        signal,
       );
       // Everything acquired past this point is torn down in reverse if a later step throws, so a failed open never
       // leaks the device we booted, the hub we spawned, the handle we minted, or the state directory we created.
       const cleanups: Array<() => Promise<void>> = [];
       if (bootedByUs) cleanups.push(() => backend.shutdown(deviceId));
       try {
+        signal?.throwIfAborted();
         const env = backend.env;
         const hub = await startHub({
           externalNode,
@@ -190,13 +198,13 @@ export function createNativeRuntime(options: RuntimeOptions = {}): DeviceRuntime
           platform: input.platform,
           deviceId,
           env,
+          signal,
         });
         cleanups.push(() => hub.stop().catch(() => undefined));
-        await backend.streamReady(hub.descriptor);
         const handle = registry.create(input.platform, deviceId);
         cleanups.push(async () => registry.release(handle));
         const stateDir = join(stateRoot, handle.token);
-        await mkdir(stateDir, { recursive: true });
+        await mkdir(stateDir, { recursive: true, mode: 0o700 });
         cleanups.push(() => rm(stateDir, { recursive: true, force: true }).catch(() => undefined));
         const automation = createAutomation({
           externalNode,
@@ -209,11 +217,13 @@ export function createNativeRuntime(options: RuntimeOptions = {}): DeviceRuntime
         cleanups.push(async () => {
           await automation.run(closeArgs(), 10_000).catch(() => undefined);
         });
-        automation.require(
-          await automation.run(["open", "--no-test-ime", "--no-record"]),
-          "Opening the automation session",
-        );
-        const capabilities = await readCapabilities(automation);
+        const [screen, controls] = await Promise.allSettled([
+          backend.streamReady(hub.descriptor, signal),
+          openAutomation(automation, signal),
+        ]);
+        if (screen.status === "rejected") throw screen.reason;
+        if (controls.status === "rejected") throw controls.reason;
+        const capabilities = controls.value;
         attachments.set(handle.token, {
           handle,
           backend,
@@ -294,7 +304,7 @@ export function createNativeRuntime(options: RuntimeOptions = {}): DeviceRuntime
     },
 
     async tap(input) {
-      const found = attachment(input.handle, "press");
+      const found = attachment(input.handle, input.viewport ? "stream" : "press");
       if (input.viewport) {
         await found.backend.tap(found.hub.descriptor, {
           x: input.point.x / input.viewport.width,
@@ -323,7 +333,7 @@ export function createNativeRuntime(options: RuntimeOptions = {}): DeviceRuntime
     },
 
     async swipe(input) {
-      const found = attachment(input.handle, "swipe");
+      const found = attachment(input.handle, input.viewport ? "stream" : "swipe");
       if (input.viewport) {
         const { width, height } = input.viewport;
         await found.backend.swipe(
@@ -355,28 +365,40 @@ export function createNativeRuntime(options: RuntimeOptions = {}): DeviceRuntime
 
     async screenshot(handle) {
       const found = attachment(handle, "screenshot");
-      const path = join(found.stateDir, `screenshot-${Date.now()}.png`);
-      found.automation.require(
-        await found.automation.run(screenshotArgs(path)),
-        "Capturing a screenshot",
-      );
-      const data = await readFile(path).catch(() => null);
-      await rm(path, { force: true });
-      if (!data)
-        throw deviceError("invalid-artifact", "The screenshot helper wrote no readable file.");
-      if (data.byteLength > Device.MAX_SCREENSHOT_BYTES) {
-        throw deviceError("invalid-artifact", "The screenshot exceeded the maximum allowed size.");
+      const path = join(found.stateDir, `screenshot-${crypto.randomUUID()}.png`);
+      try {
+        found.automation.require(
+          await found.automation.run(screenshotArgs(path)),
+          "Capturing a screenshot",
+        );
+        const file = await lstat(path).catch(() => null);
+        if (!file?.isFile())
+          throw deviceError("invalid-artifact", "The screenshot helper wrote no readable file.");
+        if (file.size > Device.MAX_SCREENSHOT_BYTES)
+          throw deviceError(
+            "invalid-artifact",
+            "The screenshot exceeded the maximum allowed size.",
+          );
+        const data = await readFile(path).catch(() => null);
+        if (!data)
+          throw deviceError("invalid-artifact", "The screenshot helper wrote no readable file.");
+        if (data.byteLength > Device.MAX_SCREENSHOT_BYTES)
+          throw deviceError(
+            "invalid-artifact",
+            "The screenshot exceeded the maximum allowed size.",
+          );
+        const dimensions = readPngDimensions(data);
+        if (!dimensions)
+          throw deviceError("invalid-artifact", "The screenshot was not a readable PNG.");
+        return {
+          data,
+          ...dimensions,
+          deviceId: found.handle.deviceId,
+          platform: found.handle.platform,
+        };
+      } finally {
+        await rm(path, { force: true }).catch(() => undefined);
       }
-      const dimensions = readPngDimensions(data);
-      if (!dimensions)
-        throw deviceError("invalid-artifact", "The screenshot was not a readable PNG.");
-      return {
-        data: new Uint8Array(data),
-        width: dimensions.width,
-        height: dimensions.height,
-        deviceId: found.handle.deviceId,
-        platform: found.handle.platform,
-      };
     },
 
     async stream(handle) {
@@ -387,11 +409,7 @@ export function createNativeRuntime(options: RuntimeOptions = {}): DeviceRuntime
       const found = attachments.get(input.handle.token);
       if (!found) return;
       // Verify the whole handle, not just the token, so a stale or mismatched handle never tears down a live device.
-      if (
-        found.handle.generation !== input.handle.generation ||
-        found.handle.platform !== input.handle.platform ||
-        found.handle.deviceId !== input.handle.deviceId
-      ) {
+      if (!Device.sameHandle(found.handle, input.handle)) {
         throw deviceError(
           "detached",
           "This device handle is no longer attached; open the device again.",
@@ -414,15 +432,32 @@ export function createNativeRuntime(options: RuntimeOptions = {}): DeviceRuntime
   };
 
   async function teardown(entry: Attachment): Promise<void> {
-    await entry.automation.run(closeArgs()).catch(() => undefined);
-    await entry.hub.stop().catch(() => undefined);
+    await Promise.all([
+      entry.automation.run(closeArgs(), 10_000).catch(() => undefined),
+      entry.hub.stop().catch(() => undefined),
+    ]);
     await rm(entry.stateDir, { recursive: true, force: true }).catch(() => undefined);
   }
 }
 
+async function openAutomation(
+  automation: Automation,
+  signal?: AbortSignal,
+): Promise<Device.Capabilities> {
+  automation.require(
+    await automation.run(["open", "--no-test-ime", "--no-record"], undefined, signal),
+    "Opening the automation session",
+  );
+  return readCapabilities(automation, signal);
+}
+
 // Read only capabilities reported by the automation engine. Streaming is a separate backend.
-async function readCapabilities(automation: Automation): Promise<Device.Capabilities> {
-  const result = await automation.run(capabilitiesArgs()).catch(() => null);
+async function readCapabilities(
+  automation: Automation,
+  signal?: AbortSignal,
+): Promise<Device.Capabilities> {
+  const result = await automation.run(capabilitiesArgs(), undefined, signal).catch(() => null);
+  signal?.throwIfAborted();
   const reported = result && result.code === 0 ? parseCapabilities(result.stdout) : null;
   const base = (reported ?? []).filter((capability) => capability !== "stream");
   const supported = [...new Set<Device.Capability>([...base, "stream"])];
diff --git a/src/native/serve-emu.test.ts b/src/native/serve-emu.test.ts
new file mode 100644
index 0000000..0cb65d7
--- /dev/null
+++ b/src/native/serve-emu.test.ts
@@ -0,0 +1,47 @@
+import { expect, test } from "bun:test";
+import { streamDescriptor } from "./hub.js";
+import { waitForScreen } from "./serve-emu.js";
+
+test.each([
+  { status: 200, body: { ok: true, status: "streaming" }, error: undefined },
+  {
+    status: 503,
+    body: { ok: false, error: "spawn ffmpeg ENOENT private-token" },
+    error: "spawn ffmpeg ENOENT [redacted]",
+  },
+  {
+    status: 200,
+    body: { ok: true, status: "error", lastError: "capture ended" },
+    error: "capture ended",
+  },
+])("Android checks capture readiness and reports backend diagnostics: %s", async (input) => {
+  const server = Bun.serve({
+    hostname: "127.0.0.1",
+    port: 0,
+    fetch(request) {
+      const url = new URL(request.url);
+      expect(url.pathname).toBe("/vendor/serve-emu/health");
+      expect(url.searchParams.get("device")).toBe("emulator-5554");
+      expect(request.headers.get("Authorization")).toBe("Bearer private-token");
+      return Response.json(input.body, { status: input.status });
+    },
+  });
+  const stream = streamDescriptor(
+    { baseUrl: server.url.origin, token: "private-token" },
+    "android",
+    "emulator-5554",
+  );
+  try {
+    if (!input.error) {
+      await waitForScreen(stream);
+      return;
+    }
+    const error = await waitForScreen(stream).catch((error: unknown) => error);
+    expect(error).toMatchObject({
+      code: "helper-failed",
+      message: expect.stringContaining(input.error),
+    });
+  } finally {
+    await server.stop(true);
+  }
+});
diff --git a/src/native/serve-emu.ts b/src/native/serve-emu.ts
new file mode 100644
index 0000000..3c21bc7
--- /dev/null
+++ b/src/native/serve-emu.ts
@@ -0,0 +1,55 @@
+import { Option, Schema } from "effect";
+import type { Device } from "../rpc.js";
+import { deviceError } from "./errors.js";
+import { parseJson } from "./json.js";
+
+const Health = Schema.Struct({
+  ok: Schema.Boolean,
+  status: Schema.optionalKey(Schema.String),
+  error: Schema.optionalKey(Schema.String),
+  lastError: Schema.optionalKey(Schema.NullOr(Schema.String)),
+});
+
+// The hub's ready line only confirms its listener. This request starts capture and checks the Android encoder.
+export async function waitForScreen(
+  stream: Device.StreamDescriptor,
+  options: { timeoutMs?: number; signal?: AbortSignal } = {},
+) {
+  const timeoutMs = options.timeoutMs ?? 30_000;
+  const url = new URL("/vendor/serve-emu/health", stream.baseUrl);
+  url.searchParams.set("device", stream.deviceId);
+  try {
+    const response = await fetch(url, {
+      headers: { Authorization: `Bearer ${stream.token}` },
+      redirect: "error",
+      signal: AbortSignal.any([
+        AbortSignal.timeout(timeoutMs),
+        ...(options.signal ? [options.signal] : []),
+      ]),
+    });
+    requireStreaming(response, await response.text(), stream.token);
+  } catch (error) {
+    if (error instanceof Error && error.name === "TimeoutError")
+      throw deviceError(
+        "timeout",
+        `The Android screen did not become available within ${timeoutMs} ms.`,
+      );
+    throw error;
+  }
+}
+
+function requireStreaming(response: Response, text: string, token: string): void {
+  const health = parseJson(Health, text);
+  if (
+    response.ok &&
+    Option.isSome(health) &&
+    health.value.ok &&
+    health.value.status === "streaming"
+  )
+    return;
+  const detail = Option.isSome(health) ? (health.value.error ?? health.value.lastError) : undefined;
+  throw deviceError(
+    "helper-failed",
+    `Android video startup failed (HTTP ${response.status}): ${detail?.replaceAll(token, "[redacted]").slice(0, 512) || "the capture session is not streaming"}`,
+  );
+}
diff --git a/src/native/serve-sim.test.ts b/src/native/serve-sim.test.ts
index 74681a7..b25f63d 100644
--- a/src/native/serve-sim.test.ts
+++ b/src/native/serve-sim.test.ts
@@ -259,7 +259,9 @@ test("waitForScreen polls the authenticated config route until capture becomes r
     response.writeHead(requests.length <= 2 ? 404 : 200).end("{}");
   });
   const baseUrl = await listen(server);
-  await expect(waitForScreen(descriptor(baseUrl), 1_000, 5)).resolves.toBeUndefined();
+  await expect(
+    waitForScreen(descriptor(baseUrl), { timeoutMs: 1_000, intervalMs: 5 }),
+  ).resolves.toBeUndefined();
   expect(requests).toEqual(
     Array.from({ length: 3 }, () => ({
       url: "/vendor/serve-sim/helper/config?device=UDID-1",
@@ -275,7 +277,9 @@ test("waitForScreen reports a timeout when capture never becomes ready", async (
     response.writeHead(404).end();
   });
   const baseUrl = await listen(server);
-  await expect(waitForScreen(descriptor(baseUrl), 40, 5)).rejects.toMatchObject({
+  await expect(
+    waitForScreen(descriptor(baseUrl), { timeoutMs: 40, intervalMs: 5 }),
+  ).rejects.toMatchObject({
     data: { code: "timeout", mayHaveExecuted: false },
   });
   expect(requests).toBeGreaterThan(0);
diff --git a/src/native/serve-sim.ts b/src/native/serve-sim.ts
index 6846a9a..bca27fd 100644
--- a/src/native/serve-sim.ts
+++ b/src/native/serve-sim.ts
@@ -142,20 +142,25 @@ async function sendHid(
 // The hub reports ready before native capture starts; poll the screen config until the simulator display is served.
 export async function waitForScreen(
   stream: Device.StreamDescriptor,
-  timeoutMs = 30_000,
-  intervalMs = 500,
+  options: { timeoutMs?: number; intervalMs?: number; signal?: AbortSignal } = {},
 ): Promise<void> {
+  const { timeoutMs = 30_000, intervalMs = 500, signal } = options;
   const deadline = Date.now() + timeoutMs;
   const url = helperUrl(stream, "config");
   while (Date.now() < deadline) {
+    signal?.throwIfAborted();
     const response = await fetch(url, {
       headers: { Authorization: `Bearer ${stream.token}` },
       redirect: "error",
-      signal: AbortSignal.timeout(Math.max(1, Math.min(5_000, deadline - Date.now()))),
+      signal: AbortSignal.any([
+        AbortSignal.timeout(Math.max(1, Math.min(5_000, deadline - Date.now()))),
+        ...(signal ? [signal] : []),
+      ]),
     }).catch(() => null);
     await response?.body?.cancel().catch(() => undefined);
+    signal?.throwIfAborted();
     if (response?.ok) return;
-    await delay(Math.min(intervalMs, Math.max(0, deadline - Date.now())));
+    await delay(Math.min(intervalMs, Math.max(0, deadline - Date.now())), undefined, { signal });
   }
   throw deviceError(
     "timeout",
diff --git a/src/rpc.ts b/src/rpc.ts
index c7e8b8f..3d1a51a 100644
--- a/src/rpc.ts
+++ b/src/rpc.ts
@@ -210,6 +210,15 @@ export const DeviceErrorCode = Schema.Literals([
 ]).annotate({ identifier: "Device.DeviceErrorCode" });
 export type DeviceErrorCode = typeof DeviceErrorCode.Type;
 
+export function sameHandle(expected: DeviceHandle, actual: DeviceHandle): boolean {
+  return (
+    expected.token === actual.token &&
+    expected.generation === actual.generation &&
+    expected.platform === actual.platform &&
+    expected.deviceId === actual.deviceId
+  );
+}
+
 // A structured device error. `mayHaveExecuted` is true when a mutating native action was already dispatched before the
 // failure, so a caller never reports a possibly-applied action as cleanly cancelled.
 export interface DeviceError extends Schema.Schema.Type<typeof DeviceError> {}
diff --git a/src/server.ts b/src/server.ts
index e53cff1..19da887 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -6,10 +6,9 @@ import { Session } from "@opencode/schema/session";
 import { Tool } from "@opencode/schema/tool";
 import { Deferred, Effect, Option, Schema, Stream } from "effect";
 import { DeviceBridge } from "./bridge.js";
+import { Device } from "./rpc.js";
 
-// One desktop connection for a session. The map is keyed by the session ID string the control RPC carries, and keeps
-// the decoded `Session.ID` for the session operations. `state` is the last `Attachment` the desktop pushed, or null
-// until it opens a device. Each in-flight agent request parks a `Deferred` the desktop later resolves through `result`.
+// Session-bound desktop state. Each pending request is claimed once and completed through the result RPC.
 interface Attachment {
   readonly connectionID: string;
   readonly sessionID: Session.ID;
@@ -27,6 +26,14 @@ interface Attachment {
 
 export type Server = Effect.Success<ReturnType<typeof make>>;
 
+type FailureData = Extract<DeviceBridge.Outcome, { type: "failure" }>["error"];
+
+const unavailable = <Failure>(
+  call: { error(code: "unavailable", message: string, data: FailureData): Failure },
+  code: FailureData["code"],
+  message: string,
+) => call.error("unavailable", message, { code, message, mayHaveExecuted: false });
+
 export const make = Effect.fn("DeviceServer.make")(function* (
   ctx: Pick<Context, "rpc" | "session" | "location" | "event">,
 ) {
@@ -51,40 +58,20 @@ export const make = Effect.fn("DeviceServer.make")(function* (
         Effect.gen(function* () {
           const decoded = Schema.decodeUnknownOption(Session.ID)(input.sessionID);
           if (Option.isNone(decoded))
-            return yield* Effect.fail(
-              call.error("unavailable", "Invalid session id.", {
-                code: "not-found",
-                message: "Invalid session id.",
-                mayHaveExecuted: false,
-              }),
-            );
+            return yield* Effect.fail(unavailable(call, "not-found", "Invalid session id."));
           const sessionID = decoded.value;
-          const session = yield* ctx.session.get({ sessionID }).pipe(
-            Effect.mapError(() =>
-              call.error("unavailable", "Session not found.", {
-                code: "not-found",
-                message: "Session not found.",
-                mayHaveExecuted: false,
-              }),
-            ),
-          );
+          const session = yield* ctx.session
+            .get({ sessionID })
+            .pipe(Effect.mapError(() => unavailable(call, "not-found", "Session not found.")));
           if (session.location.directory !== ctx.location.directory)
             return yield* Effect.fail(
-              call.error("unavailable", "Session belongs to another location.", {
-                code: "not-found",
-                message: "Session belongs to another location.",
-                mayHaveExecuted: false,
-              }),
+              unavailable(call, "not-found", "Session belongs to another location."),
             );
           const attachment = yield* Effect.acquireRelease(
             Effect.gen(function* () {
               if (!active)
                 return yield* Effect.fail(
-                  call.error("unavailable", "Device server is shutting down.", {
-                    code: "internal",
-                    message: "Device server is shutting down.",
-                    mayHaveExecuted: false,
-                  }),
+                  unavailable(call, "internal", "Device server is shutting down."),
                 );
               yield* close(input.sessionID, "replaced");
               const attachment: Attachment = {
@@ -112,11 +99,7 @@ export const make = Effect.fn("DeviceServer.make")(function* (
           const attachment = attachments.get(input.sessionID);
           if (!attachment || attachment.connectionID !== input.connectionID)
             return yield* Effect.fail(
-              call.error("unavailable", "Device connection is unavailable.", {
-                code: "detached",
-                message: "Device connection is unavailable.",
-                mayHaveExecuted: false,
-              }),
+              unavailable(call, "detached", "Device connection is unavailable."),
             );
           attachment.state = input.state;
         }),
@@ -129,11 +112,7 @@ export const make = Effect.fn("DeviceServer.make")(function* (
               : undefined;
           if (!pending || pending.claimed)
             return yield* Effect.fail(
-              call.error("unavailable", "Device request is no longer available.", {
-                code: "detached",
-                message: "Device request is no longer available.",
-                mayHaveExecuted: false,
-              }),
+              unavailable(call, "detached", "Device request is no longer available."),
             );
           pending.claimed = true;
           return pending.operation;
@@ -143,11 +122,7 @@ export const make = Effect.fn("DeviceServer.make")(function* (
           const attachment = attachments.get(input.sessionID);
           if (!attachment || attachment.connectionID !== input.connectionID)
             return yield* Effect.fail(
-              call.error("unavailable", "Device connection is unavailable.", {
-                code: "detached",
-                message: "Device connection is unavailable.",
-                mayHaveExecuted: false,
-              }),
+              unavailable(call, "detached", "Device connection is unavailable."),
             );
           const pending = attachment.pending.get(input.requestID);
           if (!pending) return;
@@ -256,10 +231,7 @@ export const make = Effect.fn("DeviceServer.make")(function* (
         return { type: "attachment" as const, attachment: device };
       }
       // Device-bound operations must target the attached handle, so a stale handle is rejected before dispatch.
-      if (
-        device.handle.token !== operation.handle.token ||
-        device.handle.generation !== operation.handle.generation
-      )
+      if (!Device.sameHandle(device.handle, operation.handle))
         return yield* new Tool.Error({
           message:
             "[device.detached] This device handle no longer matches the attached device. Call the state tool to read the current handle, then retry with it.",
diff --git a/src/stream-proxy.test.ts b/src/stream-proxy.test.ts
index f27ac15..15258fa 100644
--- a/src/stream-proxy.test.ts
+++ b/src/stream-proxy.test.ts
@@ -198,6 +198,9 @@ describe("H.264 proxy (Android)", () => {
       socket.on("close", resolveClosed);
       socket.send(JSON.stringify({ type: "video-session", size: { width: 1080, height: 2400 } }));
       socket.send(Buffer.from([0x00, 0x00, 0x00, 0x01, 0x67, 0x42]), { binary: true });
+      socket.send(
+        JSON.stringify({ type: "diagnostic", message: `fixture diagnostic ${HUB_TOKEN}` }),
+      );
     });
     teardown.push(
       () =>
@@ -224,7 +227,7 @@ describe("H.264 proxy (Android)", () => {
       "other",
       `opencode-device.${proxy.descriptor.token}`,
     ]);
-    const messages = await collect(client, 2);
+    const messages = await collect(client, 3);
 
     expect(typeof messages[0]).toBe("string");
     expect(JSON.parse(messages[0] as string)).toEqual({
@@ -232,6 +235,10 @@ describe("H.264 proxy (Android)", () => {
       size: { width: 1080, height: 2400 },
     });
     expect(messages[1]).toEqual(Buffer.from([0x00, 0x00, 0x00, 0x01, 0x67, 0x42]));
+    expect(JSON.parse(messages[2] as string)).toEqual({
+      type: "diagnostic",
+      message: "fixture diagnostic [redacted]",
+    });
     expect(hub.lastUrl()).toBe("/vendor/serve-emu/ws?device=emulator-5554&video=1&frame-meta=1");
     client.close();
     await hub.clientClosed;
diff --git a/src/stream-proxy.ts b/src/stream-proxy.ts
index 6ccaa87..75a48bc 100644
--- a/src/stream-proxy.ts
+++ b/src/stream-proxy.ts
@@ -6,10 +6,7 @@ import { WebSocket, WebSocketServer, type RawData } from "ws";
 import { Schema } from "effect";
 import type { Device } from "./rpc.js";
 
-// A loopback proxy in front of the hub's video stream. The hub token unlocks every hub route, so the viewer gets this
-// proxy's own token instead, which reaches only `GET /video` for one device. Client messages are never relayed upstream
-// except a validated video reset. Upstream routes are the vendored serve-emu (H.264 WebSocket, token subprotocol) and
-// serve-sim (MJPEG GET, Bearer token) endpoints.
+// Give the viewer a video-only loopback token, never the hub credential. Relay H.264 or MJPEG and fixed reset messages.
 
 const LOOPBACK_HOST = "127.0.0.1";
 const VIDEO_PATH = "/video";
@@ -137,22 +134,21 @@ async function pumpMjpeg(
   const controller = new AbortController();
   controllers.add(controller);
   response.on("close", () => controller.abort());
-  const fetched = await fetch(upstream.url, {
-    method: "GET",
-    headers: { authorization: upstream.authorization },
-    signal: controller.signal,
-  });
-  if (!fetched.ok || !fetched.body) {
-    controllers.delete(controller);
-    return reject(response, 502);
-  }
-  response.writeHead(200, {
-    "content-type":
-      fetched.headers.get("content-type") ?? "multipart/x-mixed-replace; boundary=frame",
-    "cache-control": "no-store",
-  });
-  const reader = fetched.body.getReader();
+  let reader: ReadableStreamDefaultReader<Uint8Array> | undefined;
   try {
+    const fetched = await fetch(upstream.url, {
+      method: "GET",
+      headers: { authorization: upstream.authorization },
+      redirect: "error",
+      signal: controller.signal,
+    });
+    if (!fetched.ok || !fetched.body) return reject(response, 502);
+    response.writeHead(200, {
+      "content-type":
+        fetched.headers.get("content-type") ?? "multipart/x-mixed-replace; boundary=frame",
+      "cache-control": "no-store",
+    });
+    reader = fetched.body.getReader();
     while (!controller.signal.aborted) {
       const chunk = await reader.read();
       if (chunk.done) break;
@@ -161,7 +157,8 @@ async function pumpMjpeg(
     }
   } finally {
     controllers.delete(controller);
-    await reader.cancel().catch(() => {});
+    controller.abort();
+    await reader?.cancel().catch(() => {});
     if (!response.destroyed) response.end();
   }
 }
@@ -174,7 +171,10 @@ function bridgeWebSocket(
   downstream: WebSocket,
   sockets: Set<WebSocket>,
 ) {
-  const hub = new WebSocket(upstream.url, [upstream.subprotocol]);
+  const hub = new WebSocket(upstream.url, [upstream.subprotocol], {
+    maxPayload: MAX_BUFFERED_BYTES,
+  });
+  const hubToken = upstream.subprotocol.slice("serve-emu.token.".length);
   let resetRequested = false;
   sockets.add(downstream);
   sockets.add(hub);
@@ -187,7 +187,9 @@ function bridgeWebSocket(
   hub.on("message", (data: RawData, isBinary: boolean) => {
     if (downstream.readyState !== WebSocket.OPEN) return;
     if (isBinary && downstream.bufferedAmount > MAX_BUFFERED_BYTES) return;
-    downstream.send(data, { binary: isBinary });
+    downstream.send(isBinary ? data : text(data).replaceAll(hubToken, "[redacted]"), {
+      binary: isBinary,
+    });
   });
   hub.on("close", closeBoth);
   hub.on("error", closeBoth);
@@ -197,10 +199,7 @@ function bridgeWebSocket(
   });
   downstream.on("message", (data: RawData, isBinary: boolean) => {
     if (isBinary) return;
-    const text = (
-      Array.isArray(data) ? Buffer.concat(data) : Buffer.isBuffer(data) ? data : Buffer.from(data)
-    ).toString("utf8");
-    const parsed = Schema.decodeUnknownOption(Schema.fromJsonString(VideoReset))(text);
+    const parsed = Schema.decodeUnknownOption(Schema.fromJsonString(VideoReset))(text(data));
     if (parsed._tag === "None") return;
     if (hub.readyState === WebSocket.CONNECTING) {
       resetRequested = true;
@@ -213,6 +212,12 @@ function bridgeWebSocket(
   downstream.on("error", closeBoth);
 }
 
+function text(data: RawData): string {
+  return (
+    Array.isArray(data) ? Buffer.concat(data) : Buffer.isBuffer(data) ? data : Buffer.from(data)
+  ).toString("utf8");
+}
+
 // Close the listener and every connection and fetch the proxy owns, then resolve once the listener has shut down.
 async function stop(
   server: Server,
diff --git a/src/viewer.test.ts b/src/viewer.test.ts
index 69717b4..11fd761 100644
--- a/src/viewer.test.ts
+++ b/src/viewer.test.ts
@@ -1,4 +1,4 @@
-import { describe, expect, test } from "bun:test";
+import { describe, expect, jest, test } from "bun:test";
 import {
   annexBCodec,
   contentPoint,
@@ -12,41 +12,174 @@ import {
 
 const annexB = new Uint8Array([0, 0, 0, 1, 0x67, 0x64, 0, 0x29, 0, 0, 1, 0x65, 0x88]);
 
-test("destroying a viewer clears the previous device canvas dimensions", () => {
-  const original = Object.getOwnPropertyDescriptor(globalThis, "document");
+function h264Fixture() {
+  jest.useFakeTimers();
   const listeners = new Set<EventListener>();
-  Object.defineProperty(globalThis, "document", {
-    configurable: true,
-    value: {
+  const checks: Array<ReturnType<typeof Promise.withResolvers<VideoDecoderSupport>>> = [];
+  class Socket extends EventTarget {
+    static instance: Socket;
+    static OPEN = 1;
+    readyState = 1;
+    closed = false;
+    binaryType = "";
+    constructor() {
+      super();
+      Socket.instance = this;
+    }
+    send() {}
+    close() {
+      this.closed = true;
+    }
+    emit(type: string, properties: object = {}) {
+      this.dispatchEvent(Object.assign(new Event(type), properties));
+    }
+  }
+  class Decoder {
+    static isConfigSupported() {
+      const check = Promise.withResolvers<VideoDecoderSupport>();
+      checks.push(check);
+      return check.promise;
+    }
+    state = "unconfigured";
+    decodeQueueSize = 0;
+    constructor(private readonly callbacks: VideoDecoderInit) {}
+    configure() {
+      this.state = "configured";
+    }
+    decode() {
+      this.callbacks.output({ displayWidth: 100, displayHeight: 200, close() {} } as VideoFrame);
+    }
+    close() {
+      this.state = "closed";
+    }
+  }
+  const globals = {
+    document: {
+      visibilityState: "visible",
       addEventListener: (_type: string, listener: EventListener) => listeners.add(listener),
       removeEventListener: (_type: string, listener: EventListener) => listeners.delete(listener),
     },
+    WebSocket: Socket,
+    VideoDecoder: Decoder,
+    EncodedVideoChunk: class {},
+  };
+  const originals = new Map(
+    Object.keys(globals).map((key) => [key, Object.getOwnPropertyDescriptor(globalThis, key)]),
+  );
+  for (const [key, value] of Object.entries(globals))
+    Object.defineProperty(globalThis, key, { configurable: true, value });
+  const states: string[] = [];
+  const errors: string[] = [];
+  const canvas = {
+    width: 0,
+    height: 0,
+    getContext: () => ({ drawImage() {} }),
+  } as unknown as HTMLCanvasElement;
+  const viewer = createViewer({
+    canvas,
+    stream: {
+      platform: "android",
+      deviceId: "phone",
+      baseUrl: "http://127.0.0.1:3400",
+      token: "private-token",
+      protocol: "h264",
+      loopback: true,
+    },
+    onState: (state) => states.push(state),
+    onError: (message) => errors.push(message),
   });
+  viewer.active(true);
+  return {
+    viewer,
+    states,
+    errors,
+    canvas,
+    listeners,
+    checks,
+    socket: Socket.instance,
+    restore() {
+      viewer.destroy();
+      jest.useRealTimers();
+      for (const [key, original] of originals) {
+        if (original) Object.defineProperty(globalThis, key, original);
+        else Reflect.deleteProperty(globalThis, key);
+      }
+    },
+  };
+}
+
+test("unexpected Android video closure is visible instead of a silently blank panel", () => {
+  const item = h264Fixture();
   try {
-    const canvas = { width: 100, height: 200 } as HTMLCanvasElement;
-    const states: string[] = [];
-    const viewer = createViewer({
-      canvas,
-      stream: {
-        platform: "android",
-        deviceId: "device-a",
-        baseUrl: "http://127.0.0.1:3400",
-        token: "private",
-        protocol: "h264",
-        loopback: true,
-      },
-      onState: (state) => states.push(state),
-      onError: () => undefined,
+    item.socket.emit("close", { code: 1006 });
+    expect(item.states).toEqual(["connecting", "paused"]);
+    expect(item.errors[0]).toContain("connection closed (code 1006)");
+    expect(jest.getTimerCount()).toBe(0);
+  } finally {
+    item.restore();
+  }
+});
+
+test("Android video startup has a deadline and stops failed connections", () => {
+  const item = h264Fixture();
+  try {
+    jest.advanceTimersByTime(15_000);
+    expect(item.errors[0]).toContain("within 15 seconds");
+    expect(item.socket.closed).toBe(true);
+    expect(item.states.at(-1)).toBe("paused");
+    expect(jest.getTimerCount()).toBe(0);
+  } finally {
+    item.restore();
+  }
+});
+
+test("Android backend errors are shown once and redact the stream token", () => {
+  const item = h264Fixture();
+  try {
+    item.socket.emit("message", {
+      data: JSON.stringify({ ok: false, error: "capture failed private-token" }),
+    });
+    item.socket.emit("close", { code: 1006 });
+    expect(item.errors).toEqual(["Android video failed: capture failed [redacted]"]);
+    expect(item.socket.closed).toBe(true);
+  } finally {
+    item.restore();
+  }
+});
+
+test("Android ignores stale decoder checks, renders the current frame, and releases viewer resources", async () => {
+  const item = h264Fixture();
+  try {
+    item.socket.emit("message", { data: annexB.slice().buffer });
+    item.socket.emit("message", {
+      data: JSON.stringify({ type: "video-session", size: { width: 100, height: 200 } }),
+    });
+    item.socket.emit("message", { data: annexB.slice().buffer });
+    item.checks[0].reject(new Error("obsolete codec check"));
+    item.checks[1].resolve({ supported: true });
+    await Promise.resolve();
+    expect(item.states).toEqual(["connecting", "playing"]);
+    expect(item.canvas.width).toBe(100);
+    expect(item.canvas.height).toBe(200);
+    expect(jest.getTimerCount()).toBe(0);
+    expect(item.errors).toEqual([]);
+    expect(item.listeners.size).toBe(1);
+    item.socket.emit("message", {
+      data: JSON.stringify({ type: "video-session", size: { width: 100, height: 200 } }),
     });
-    expect(listeners.size).toBe(1);
-    viewer.destroy();
-    expect(canvas.width).toBe(0);
-    expect(canvas.height).toBe(0);
-    expect(states).toEqual(["idle"]);
-    expect(listeners.size).toBe(0);
+    expect(jest.getTimerCount()).toBe(1);
+    item.socket.emit("message", { data: annexB.slice().buffer });
+    item.checks[2].resolve({ supported: true });
+    await Promise.resolve();
+    expect(jest.getTimerCount()).toBe(0);
+    item.viewer.destroy();
+    expect(item.canvas.width).toBe(0);
+    expect(item.canvas.height).toBe(0);
+    expect(item.listeners.size).toBe(0);
+    item.socket.emit("close", { code: 1006 });
+    expect(item.errors).toEqual([]);
   } finally {
-    if (original) Object.defineProperty(globalThis, "document", original);
-    else Reflect.deleteProperty(globalThis, "document");
+    item.restore();
   }
 });
 
@@ -80,6 +213,7 @@ describe("parseFramePacket", () => {
     expect(packet).toEqual({
       bytes: data.subarray(16),
       key: true,
+      codec: "avc1.640029",
       timestamp: 123_456,
       serverTimestamp: undefined,
     });
@@ -91,11 +225,10 @@ describe("parseFramePacket", () => {
     expect(packet).toEqual({
       bytes: data.subarray(24),
       key: true,
+      codec: "avc1.640029",
       timestamp: 222,
       serverTimestamp: 1_735_689_600_123,
     });
-    expect(packet?.width).toBeUndefined();
-    expect(packet?.height).toBeUndefined();
   });
 
   test.each([
diff --git a/src/viewer.ts b/src/viewer.ts
index b5dbbef..4bbbd2d 100644
--- a/src/viewer.ts
+++ b/src/viewer.ts
@@ -46,28 +46,37 @@ export interface ViewerOptions {
 export interface FramePacket {
   readonly bytes: Uint8Array;
   readonly key: boolean;
+  readonly codec?: string;
   readonly timestamp: number;
   readonly serverTimestamp?: number;
-  readonly width?: number;
-  readonly height?: number;
 }
 
 export interface MjpegFrames {
-  readonly frames: ReadonlyArray<Uint8Array>;
-  readonly rest: Uint8Array;
+  readonly frames: ReadonlyArray<Uint8Array<ArrayBuffer>>;
+  readonly rest: Uint8Array<ArrayBuffer>;
 }
 
 const MAGIC = 0x53454d55;
+const FRAME_HEADERS: Readonly<Record<number, number | undefined>> = { 1: 16, 2: 24 };
 const MAX_JPEG_BUFFER = 16 * 1024 * 1024;
 
 export function createViewer(options: ViewerOptions) {
   let active = false;
   let stop: (() => void) | undefined;
 
+  const start = () => {
+    try {
+      return options.stream.protocol === "h264" ? playH264(options) : playMjpeg(options);
+    } catch (error) {
+      options.onState("paused");
+      options.onError(error instanceof Error ? error.message : String(error));
+      return () => {};
+    }
+  };
   const update = () => {
     const shouldPlay = active && document.visibilityState === "visible";
     if (shouldPlay && !stop) {
-      stop = options.stream.protocol === "h264" ? playH264(options) : playMjpeg(options);
+      stop = start();
       return;
     }
     if (shouldPlay || !stop) return;
@@ -97,37 +106,46 @@ export function createViewer(options: ViewerOptions) {
 
 export function parseFramePacket(input: ArrayBuffer): FramePacket | undefined {
   const data = new Uint8Array(input);
-  const view = new DataView(input);
   if (data.byteLength < 4) return;
-  if (view.getUint32(0) !== MAGIC) {
-    if (!hasAnnexBStart(data)) return;
-    return {
-      bytes: data,
-      key: hasNal(data, 5) || hasNal(data, 7),
-      timestamp: performance.now() * 1_000,
-    };
-  }
+  const view = new DataView(input);
+  if (view.getUint32(0) === MAGIC) return metadataFrame(data, view);
+  return videoFrame(data, performance.now() * 1_000, false);
+}
 
+function metadataFrame(data: Uint8Array, view: DataView): FramePacket | undefined {
   if (data.byteLength < 16) return;
-  const version = view.getUint8(4);
-  const header = version === 1 ? 16 : version === 2 ? 24 : 0;
+  const header = FRAME_HEADERS[view.getUint8(4)];
   if (!header || data.byteLength <= header) return;
   const pts = view.getBigUint64(8);
   if (pts > BigInt(Number.MAX_SAFE_INTEGER)) return;
-  const bytes = data.subarray(header);
-  if (!hasAnnexBStart(bytes)) return;
+  return videoFrame(
+    data.subarray(header),
+    Number(pts),
+    (view.getUint8(5) & 1) === 1,
+    header === 24 ? Number(view.getBigUint64(16)) / 1_000 : undefined,
+  );
+}
+
+function videoFrame(
+  bytes: Uint8Array,
+  timestamp: number,
+  key: boolean,
+  serverTimestamp?: number,
+): FramePacket | undefined {
+  const start = nalStart(bytes, 0);
+  if (start === undefined || start >= bytes.byteLength) return;
+  const info = annexBInfo(bytes);
   return {
     bytes,
-    key: (view.getUint8(5) & 1) === 1 || hasNal(bytes, 5) || hasNal(bytes, 7),
-    timestamp: Number(pts),
-    serverTimestamp: version === 2 ? Number(view.getBigUint64(16)) / 1_000 : undefined,
+    key: key || info.key,
+    codec: info.codec,
+    timestamp,
+    serverTimestamp,
   };
 }
 
 export function annexBCodec(data: Uint8Array) {
-  const sps = annexBNals(data).find((nal) => (nal[0] & 0x1f) === 7);
-  if (!sps || sps.byteLength < 4) return;
-  return `avc1.${[sps[1], sps[2], sps[3]].map((byte) => byte.toString(16).padStart(2, "0")).join("")}`;
+  return annexBInfo(data).codec;
 }
 
 export function contentPoint(
@@ -148,14 +166,7 @@ export function contentPoint(
     ].every(Number.isFinite)
   )
     return;
-  if (
-    bounds.width <= 0 ||
-    bounds.height <= 0 ||
-    !Number.isSafeInteger(size.width) ||
-    !Number.isSafeInteger(size.height)
-  )
-    return;
-  if (size.width <= 0 || size.height <= 0) return;
+  if (bounds.width <= 0 || bounds.height <= 0 || !validVideoSize(size)) return;
   const scale = Math.min(bounds.width / size.width, bounds.height / size.height);
   const width = size.width * scale;
   const height = size.height * scale;
@@ -180,14 +191,14 @@ export function multipartBoundary(contentType: string | null) {
   if (!value) return;
   const boundary = value.startsWith('"') && value.endsWith('"') ? value.slice(1, -1) : value;
   const normalized = boundary.startsWith("--") ? boundary.slice(2) : boundary;
-  if (!normalized || /[\r\n]/.test(normalized)) return;
+  if (!normalized) return;
   return normalized;
 }
 
-export function parseMjpegFrames(data: Uint8Array, boundary: string): MjpegFrames {
+export function parseMjpegFrames(data: Uint8Array<ArrayBuffer>, boundary: string): MjpegFrames {
   const delimiter = new TextEncoder().encode(`--${boundary}`);
   const separator = new Uint8Array([13, 10, 13, 10]);
-  const frames: Uint8Array[] = [];
+  const frames: Uint8Array<ArrayBuffer>[] = [];
   let cursor = 0;
   let consumed = 0;
   while (cursor < data.byteLength) {
@@ -195,46 +206,59 @@ export function parseMjpegFrames(data: Uint8Array, boundary: string): MjpegFrame
     if (start < 0) break;
     const line = start + delimiter.byteLength;
     if (line + 2 > data.byteLength) return { frames, rest: data.slice(start) };
-    if (data[line] !== 13 || data[line + 1] !== 10) {
+    if (!hasCrlf(data, line)) {
       cursor = line;
       continue;
     }
     const headerEnd = findBytes(data, separator, line + 2);
     if (headerEnd < 0) return { frames, rest: data.slice(start) };
     const headers = new TextDecoder("ascii").decode(data.subarray(line + 2, headerEnd));
-    const length = headers.match(/(?:^|\r\n)Content-Length:\s*(\d+)(?:\r\n|$)/i)?.[1];
-    const contentType = headers
-      .match(/(?:^|\r\n)Content-Type:\s*([^\r\n]+)(?:\r\n|$)/i)?.[1]
-      .trim()
-      .toLowerCase();
-    const bytes = length ? Number(length) : 0;
+    const bytes = jpegLength(headers);
     const frameStart = headerEnd + separator.byteLength;
-    const frameEnd = frameStart + bytes;
-    if (
-      !Number.isSafeInteger(bytes) ||
-      bytes <= 0 ||
-      bytes > MAX_JPEG_BUFFER ||
-      contentType !== "image/jpeg"
-    ) {
+    if (!bytes) {
       cursor = headerEnd + separator.byteLength;
       continue;
     }
+    const frameEnd = frameStart + bytes;
     if (frameEnd > data.byteLength) return { frames, rest: data.slice(start) };
-    const frame = data.slice(frameStart, frameEnd);
-    if (
-      frame.byteLength >= 4 &&
-      frame[0] === 0xff &&
-      frame[1] === 0xd8 &&
-      frame.at(-2) === 0xff &&
-      frame.at(-1) === 0xd9
-    )
-      frames.push(frame);
+    const frame = data.subarray(frameStart, frameEnd);
+    if (isJpeg(frame)) frames.push(frame);
     consumed = frameEnd;
     cursor = frameEnd;
   }
   return { frames, rest: data.slice(consumed) };
 }
 
+function hasCrlf(bytes: Uint8Array, offset: number): boolean {
+  return bytes[offset] === 13 && bytes[offset + 1] === 10;
+}
+
+function jpegLength(headers: string): number | undefined {
+  const length = headers.match(/(?:^|\r\n)Content-Length:\s*(\d+)(?:\r\n|$)/i)?.[1];
+  const contentType = headers
+    .match(/(?:^|\r\n)Content-Type:\s*([^\r\n]+)(?:\r\n|$)/i)?.[1]
+    .trim()
+    .toLowerCase();
+  const bytes = length ? Number(length) : 0;
+  if (
+    Number.isSafeInteger(bytes) &&
+    bytes > 0 &&
+    bytes <= MAX_JPEG_BUFFER &&
+    contentType === "image/jpeg"
+  )
+    return bytes;
+}
+
+function isJpeg(frame: Uint8Array): boolean {
+  return (
+    frame.byteLength >= 4 &&
+    frame[0] === 0xff &&
+    frame[1] === 0xd8 &&
+    frame.at(-2) === 0xff &&
+    frame.at(-1) === 0xd9
+  );
+}
+
 function playH264(options: ViewerOptions) {
   if (typeof VideoDecoder !== "function" || typeof EncodedVideoChunk !== "function") {
     options.onState("paused");
@@ -250,6 +274,15 @@ function playH264(options: ViewerOptions) {
   let waitingKeyframe = true;
   let stopped = false;
   let playing = false;
+  let startupTimer: ReturnType<typeof setTimeout> | undefined;
+  const waitForFrame = () => {
+    clearTimeout(startupTimer);
+    startupTimer = setTimeout(
+      () =>
+        fail("Android video did not produce a screen within 15 seconds. Refresh devices to retry."),
+      15_000,
+    );
+  };
   socket.binaryType = "arraybuffer";
   options.onState("connecting");
 
@@ -267,19 +300,20 @@ function playH264(options: ViewerOptions) {
     codec = undefined;
     waitingKeyframe = true;
     playing = false;
-    if (previous && previous.state !== "closed") {
-      try {
-        previous.reset();
-      } finally {
-        previous.close();
-      }
+    if (previous && previous.state !== "closed") previous.close();
+    if (request && wasPlaying && !stopped) {
+      waitForFrame();
+      options.onState("connecting");
     }
-    if (request && wasPlaying && !stopped) options.onState("connecting");
     if (request) requestKeyframe();
   };
   const fail = (message: string) => {
     if (stopped) return;
-    options.onError(message);
+    stopped = true;
+    clearTimeout(startupTimer);
+    socket.close();
+    reset();
+    options.onError(message.replaceAll(options.stream.token, "[redacted]").slice(0, 512));
     options.onState("paused");
   };
   const decode = (frame: FramePacket, target: VideoDecoder) => {
@@ -294,35 +328,10 @@ function playH264(options: ViewerOptions) {
       );
       waitingKeyframe = false;
     } catch (error) {
-      reset(true);
       fail(`H.264 decode failed: ${error instanceof Error ? error.message : String(error)}`);
     }
   };
-  socket.addEventListener("open", () => requestKeyframe());
-  socket.addEventListener("message", (event) => {
-    if (stopped) return;
-    if (typeof event.data === "string") {
-      if (videoSessionSize(event.data)) reset(true);
-      return;
-    }
-    if (!(event.data instanceof ArrayBuffer)) return;
-    const frame = parseFramePacket(event.data);
-    if (!frame) return;
-    if (decoder && decoder.decodeQueueSize > 2) {
-      reset(true);
-      return;
-    }
-    if (waitingKeyframe && !frame.key) return;
-
-    const nextCodec = annexBCodec(frame.bytes) ?? codec;
-    if (decoder && nextCodec === codec) {
-      decode(frame, decoder);
-      return;
-    }
-    if (!nextCodec) {
-      requestKeyframe();
-      return;
-    }
+  const configure = (frame: FramePacket, nextCodec: string) => {
     reset();
     codec = nextCodec;
     const generation = configuring;
@@ -331,8 +340,8 @@ function playH264(options: ViewerOptions) {
       optimizeForLatency: true,
       hardwareAcceleration: "prefer-hardware",
     };
-    void VideoDecoder.isConfigSupported(config).then(
-      (support) => {
+    void VideoDecoder.isConfigSupported(config)
+      .then((support) => {
         if (stopped || generation !== configuring) return;
         if (!support.supported) {
           fail(`H.264 codec ${nextCodec} is not supported by this browser`);
@@ -345,12 +354,13 @@ function playH264(options: ViewerOptions) {
               return;
             }
             try {
-              if (draw(options, output, output.displayWidth, output.displayHeight) && !playing) {
+              draw(options, output, output.displayWidth, output.displayHeight);
+              if (!playing) {
                 playing = true;
+                clearTimeout(startupTimer);
                 options.onState("playing");
               }
             } catch (error) {
-              reset(true);
               fail(
                 `Device video draw failed: ${error instanceof Error ? error.message : String(error)}`,
               );
@@ -360,7 +370,6 @@ function playH264(options: ViewerOptions) {
           },
           error(error) {
             if (stopped || decoder !== target) return;
-            reset(true);
             fail(`H.264 decoder failed: ${error.message}`);
           },
         });
@@ -373,27 +382,46 @@ function playH264(options: ViewerOptions) {
           );
           return;
         }
-        if (stopped || generation !== configuring) {
-          target.close();
-          return;
-        }
         decoder = target;
         decode(frame, target);
-      },
-      (error) =>
+      })
+      .catch((error) => {
+        if (stopped || generation !== configuring) return;
         fail(
-          `H.264 decoder support check failed: ${error instanceof Error ? error.message : String(error)}`,
-        ),
-    );
+          `H.264 decoder setup failed: ${error instanceof Error ? error.message : String(error)}`,
+        );
+      });
+  };
+  const receive = (frame: FramePacket) => {
+    if (decoder && decoder.decodeQueueSize > 2) return reset(true);
+    if (waitingKeyframe && !frame.key) return;
+    const nextCodec = frame.codec ?? codec;
+    if (!nextCodec) return requestKeyframe();
+    if (decoder && nextCodec === codec) return decode(frame, decoder);
+    configure(frame, nextCodec);
+  };
+  waitForFrame();
+  socket.addEventListener("open", requestKeyframe);
+  socket.addEventListener("message", (event) => {
+    if (stopped) return;
+    if (typeof event.data === "string") {
+      const message = videoMessage(event.data);
+      if (message?.type === "error") fail(`Android video failed: ${message.message}`);
+      if (message?.type === "reset") reset(true);
+      return;
+    }
+    if (!(event.data instanceof ArrayBuffer)) return;
+    const frame = parseFramePacket(event.data);
+    if (frame) receive(frame);
   });
   socket.addEventListener("error", () => fail("Device video connection failed"));
-  socket.addEventListener("close", () => {
-    reset();
-    if (!stopped) options.onState("paused");
+  socket.addEventListener("close", (event) => {
+    fail(`Device video connection closed (code ${event.code}). Refresh devices to retry.`);
   });
 
   return () => {
     stopped = true;
+    clearTimeout(startupTimer);
     socket.close();
     reset();
   };
@@ -402,9 +430,21 @@ function playH264(options: ViewerOptions) {
 function playMjpeg(options: ViewerOptions) {
   const abort = new AbortController();
   let reader: ReadableStreamDefaultReader<Uint8Array> | undefined;
-  let bitmap: ImageBitmap | undefined;
   let stopped = false;
   let playing = false;
+  const render = async (bytes: Uint8Array<ArrayBuffer>) => {
+    const bitmap = await createImageBitmap(new Blob([bytes], { type: "image/jpeg" }));
+    try {
+      if (stopped) return;
+      draw(options, bitmap, bitmap.width, bitmap.height);
+      if (!playing) {
+        playing = true;
+        options.onState("playing");
+      }
+    } finally {
+      bitmap.close();
+    }
+  };
   options.onState("connecting");
   void fetch(new URL("/video", new URL(options.stream.baseUrl).origin), {
     method: "GET",
@@ -417,33 +457,19 @@ function playMjpeg(options: ViewerOptions) {
       const boundary = multipartBoundary(response.headers.get("content-type"));
       if (!boundary) throw new Error("Device video returned an invalid MJPEG content type");
       reader = response.body.getReader();
-      let pending: Uint8Array<ArrayBufferLike> = new Uint8Array();
+      let pending = new Uint8Array();
       while (!stopped) {
         const next = await reader.read();
         if (next.done) break;
         pending = append(pending, next.value);
         const frames = parseMjpegFrames(pending, boundary);
         pending = frames.rest;
-        for (const bytes of frames.frames) {
-          const nextBitmap = await createImageBitmap(
-            new Blob([new Uint8Array(bytes).buffer], { type: "image/jpeg" }),
-          );
-          bitmap = nextBitmap;
-          try {
-            if (stopped) continue;
-            if (draw(options, nextBitmap, nextBitmap.width, nextBitmap.height) && !playing) {
-              playing = true;
-              options.onState("playing");
-            }
-          } finally {
-            nextBitmap.close();
-            if (bitmap === nextBitmap) bitmap = undefined;
-          }
-        }
+        const bytes = frames.frames.at(-1);
+        if (bytes) await render(bytes);
         if (pending.byteLength > MAX_JPEG_BUFFER)
           throw new Error("Device MJPEG stream exceeded 16 MiB without a complete frame");
       }
-      if (!stopped) options.onState("paused");
+      if (!stopped) throw new Error("Device video stream ended. Refresh devices to retry.");
     })
     .catch((error) => {
       if (!stopped) {
@@ -451,7 +477,9 @@ function playMjpeg(options: ViewerOptions) {
         options.onError(error instanceof Error ? error.message : String(error));
       }
     })
-    .finally(() => {
+    .finally(async () => {
+      abort.abort();
+      await reader?.cancel().catch(() => {});
       reader?.releaseLock();
       reader = undefined;
     });
@@ -460,72 +488,87 @@ function playMjpeg(options: ViewerOptions) {
     stopped = true;
     abort.abort();
     void reader?.cancel().catch(() => {});
-    bitmap?.close();
-    bitmap = undefined;
   };
 }
 
 function draw(options: ViewerOptions, source: CanvasImageSource, width: number, height: number) {
   if (!Number.isSafeInteger(width) || !Number.isSafeInteger(height) || width <= 0 || height <= 0)
-    return false;
+    throw new Error("Device video produced invalid screen dimensions");
   if (options.canvas.width !== width || options.canvas.height !== height) {
     options.canvas.width = width;
     options.canvas.height = height;
   }
   const context = options.canvas.getContext("2d", { alpha: false });
-  if (!context) return false;
+  if (!context) throw new Error("Device video canvas is unavailable");
   context.drawImage(source, 0, 0, width, height);
-  return true;
 }
 
-function videoSessionSize(value: string) {
+type VideoMessage = { type: "reset" } | { type: "error"; message: string };
+
+function videoMessage(value: string): VideoMessage | undefined {
   try {
     const parsed: unknown = JSON.parse(value);
-    if (
-      !parsed ||
-      typeof parsed !== "object" ||
-      !("type" in parsed) ||
-      parsed.type !== "video-session"
-    )
-      return;
-    if (!("size" in parsed) || !parsed.size || typeof parsed.size !== "object") return;
-    if (!("width" in parsed.size) || !("height" in parsed.size)) return;
-    if (typeof parsed.size.width !== "number" || typeof parsed.size.height !== "number") return;
-    if (!Number.isSafeInteger(parsed.size.width) || !Number.isSafeInteger(parsed.size.height))
-      return;
-    if (parsed.size.width <= 0 || parsed.size.height <= 0) return;
-    return { width: parsed.size.width, height: parsed.size.height };
+    if (!parsed || typeof parsed !== "object") return;
+    if ("ok" in parsed && parsed.ok === false)
+      return {
+        type: "error",
+        message:
+          "error" in parsed && typeof parsed.error === "string"
+            ? parsed.error
+            : "the capture session failed",
+      };
+    if (isVideoSession(parsed)) return { type: "reset" };
   } catch {
     return;
   }
 }
 
-function annexBNals(data: Uint8Array) {
-  const starts: Array<{ readonly code: number; readonly nal: number }> = [];
+function isVideoSession(message: object): boolean {
+  return (
+    "type" in message &&
+    message.type === "video-session" &&
+    "size" in message &&
+    message.size !== null &&
+    typeof message.size === "object" &&
+    validVideoSize(message.size)
+  );
+}
+
+function validVideoSize(size: object): boolean {
+  if (!("width" in size) || !("height" in size)) return false;
+  return (
+    typeof size.width === "number" &&
+    typeof size.height === "number" &&
+    Number.isSafeInteger(size.width) &&
+    Number.isSafeInteger(size.height) &&
+    size.width > 0 &&
+    size.height > 0
+  );
+}
+
+// Inspect once per packet. An SPS supplies both the codec and keyframe marker, so most keyframes stop at their header.
+function annexBInfo(data: Uint8Array): { key: boolean; codec?: string } {
+  let key = false;
   for (let index = 0; index < data.byteLength - 2; index++) {
-    if (data[index] !== 0 || data[index + 1] !== 0) continue;
-    if (data[index + 2] === 1) {
-      starts.push({ code: index, nal: index + 3 });
-      index += 2;
-      continue;
-    }
-    if (index + 3 < data.byteLength && data[index + 2] === 0 && data[index + 3] === 1) {
-      starts.push({ code: index, nal: index + 4 });
-      index += 3;
-    }
+    const start = nalStart(data, index);
+    if (start === undefined) continue;
+    const type = data[start] & 0x1f;
+    if (type === 7) return { key: true, codec: spsCodec(data.subarray(start, start + 4)) };
+    if (type === 5) key = true;
+    index = start;
   }
-  return starts.map((start, index) =>
-    data.subarray(start.nal, starts[index + 1]?.code ?? data.byteLength),
-  );
+  return { key };
 }
 
-function hasAnnexBStart(data: Uint8Array) {
-  if (data.byteLength >= 4 && data[0] === 0 && data[1] === 0 && data[2] === 1) return true;
-  return data.byteLength >= 5 && data[0] === 0 && data[1] === 0 && data[2] === 0 && data[3] === 1;
+function nalStart(data: Uint8Array, index: number): number | undefined {
+  if (data[index] !== 0 || data[index + 1] !== 0) return;
+  if (data[index + 2] === 1) return index + 3;
+  if (data[index + 2] === 0 && data[index + 3] === 1) return index + 4;
 }
 
-function hasNal(data: Uint8Array, type: number) {
-  return annexBNals(data).some((nal) => (nal[0] & 0x1f) === type);
+function spsCodec(sps: Uint8Array): string | undefined {
+  if (sps.byteLength < 4) return;
+  return `avc1.${[sps[1], sps[2], sps[3]].map((byte) => byte.toString(16).padStart(2, "0")).join("")}`;
 }
 
 function append(left: Uint8Array, right: Uint8Array) {