diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index cf4f0c1468..79d0699c0c 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "hyperframes",
   "description": "HyperFrames by HeyGen. Write HTML, render video. Compositions, GSAP and runtime adapter animations, captions, voiceovers, audio-reactive visuals, and website capture for HyperFrames.",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "author": {
     "name": "HeyGen",
     "email": "hyperframes@heygen.com",
diff --git a/.codex-plugin/plugin.json b/.codex-plugin/plugin.json
index 45d25dfefc..c8986414fa 100644
--- a/.codex-plugin/plugin.json
+++ b/.codex-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "hyperframes",
   "description": "Write HTML, render video. Compositions, Tailwind v4 styles, GSAP and runtime adapter animations, captions, voiceovers, audio-reactive visuals, and website capture for HyperFrames.",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "author": {
     "name": "HeyGen",
     "email": "hyperframes@heygen.com",
diff --git a/.cursor-plugin/plugin.json b/.cursor-plugin/plugin.json
index 8b96462fa2..396a741a19 100644
--- a/.cursor-plugin/plugin.json
+++ b/.cursor-plugin/plugin.json
@@ -3,7 +3,7 @@
   "name": "hyperframes",
   "displayName": "HyperFrames by HeyGen",
   "description": "Write HTML, render video. Compositions, Tailwind v4 styles, GSAP and runtime adapter animations, captions, voiceovers, audio-reactive visuals, and website capture for HyperFrames.",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "author": {
     "name": "HeyGen",
     "email": "hyperframes@heygen.com"
diff --git a/docs/changelog.mdx b/docs/changelog.mdx
index 6fae279c17..fe7b6dec7f 100644
--- a/docs/changelog.mdx
+++ b/docs/changelog.mdx
@@ -8,6 +8,26 @@ Recent HyperFrames releases, including user-facing features, fixes, and migratio
 
 {/* New release entries are prepended by `bun run changelog:draft <version> --write`. */}
 
+<Update
+  label="HyperFrames v0.8.43"
+  description="Released - 2026-09-16"
+  tags={["Release", "Core", "Lint", "Docs", "Telemetry"]}
+>
+Portrait compositions no longer render clipped when the project was scaffolded at a different size, and `hyperframes lint` now warns before you render when the scaffold's `html, body` size drifts from the root. Render telemetry gains per-tag and failure-type detail, and docs search shows catalog source file names correctly.
+
+## Fixes
+
+- **Core:** Size `html` and `body` to the composition root at runtime. A portrait composition (for example 1080x1920) in a project scaffolded landscape used to render only its top 1080px, with the page background below. It now renders the full frame. Fixes [#4001](https://github.com/heygen-com/hyperframes/issues/4001) ([eb0957a49](https://github.com/heygen-com/hyperframes/commit/eb0957a497208e72fda82952410d14dcb03cce77), [#4005](https://github.com/heygen-com/hyperframes/pull/4005)).
+- **Lint:** New `root_dimensions_mismatch` warning. It fires when the root's `data-width`/`data-height` disagree with the `html, body` CSS size or the viewport meta, so the drift shows up in `lint` and `check` before a render. Sub-compositions saved as full HTML documents can trigger this warning even though the parent composition sizes them; it does not affect renders, and a fix follows in the next patch ([eb0957a49](https://github.com/heygen-com/hyperframes/commit/eb0957a497208e72fda82952410d14dcb03cce77), [#4005](https://github.com/heygen-com/hyperframes/pull/4005)).
+- **Docs:** Catalog page "Source" section titles are now plain strings, so docs search shows the file name instead of `[object Object]` ([7b5fdb1ad](https://github.com/heygen-com/hyperframes/commit/7b5fdb1ad28347272d235edea7aa6a9c762d5e1c), [#4006](https://github.com/heygen-com/hyperframes/pull/4006)).
+
+## Features
+
+- **Telemetry:** `render_complete` events now include `composition_element_tags` (a count per element tag), `aroll_video_count`, and `heygen_video_count`. `render_error` events add `error_name` and `failed_stage_code`, so failures can be grouped by error type and pipeline stage ([3704863d9](https://github.com/heygen-com/hyperframes/commit/3704863d966aa2bbee305e69b4f8dbfa0b93090b), [#4004](https://github.com/heygen-com/hyperframes/pull/4004)).
+
+[View the full commit range](https://github.com/heygen-com/hyperframes/compare/v0.8.42...v0.8.43).
+</Update>
+
 <Update
   label="HyperFrames v0.8.42"
   description="Released - 2026-09-16"
diff --git a/packages/aws-lambda/package.json b/packages/aws-lambda/package.json
index 9bff161e0d..38dd29b994 100644
--- a/packages/aws-lambda/package.json
+++ b/packages/aws-lambda/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/aws-lambda",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "AWS Lambda adapter for HyperFrames distributed rendering — handler, client-side SDK, and CDK construct.",
   "repository": {
     "type": "git",
diff --git a/packages/cli/package.json b/packages/cli/package.json
index d3cefc3895..6fafc8fb45 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/cli",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "HyperFrames CLI — create, preview, and render HTML video compositions",
   "license": "Apache-2.0",
   "repository": {
diff --git a/packages/core/package.json b/packages/core/package.json
index 4924a836bd..caf95acc7d 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/core",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "",
   "repository": {
     "type": "git",
diff --git a/packages/engine/package.json b/packages/engine/package.json
index 6a0305bcd9..09d169355a 100644
--- a/packages/engine/package.json
+++ b/packages/engine/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/engine",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "Seekable web page to video rendering engine (Puppeteer + FFmpeg)",
   "repository": {
     "type": "git",
diff --git a/packages/gcp-cloud-run/package.json b/packages/gcp-cloud-run/package.json
index 08d18fdff9..4c45b9ca4d 100644
--- a/packages/gcp-cloud-run/package.json
+++ b/packages/gcp-cloud-run/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/gcp-cloud-run",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "Google Cloud Run + Workflows adapter for HyperFrames distributed rendering — request handler, client-side SDK, and Terraform module.",
   "repository": {
     "type": "git",
diff --git a/packages/lint/package.json b/packages/lint/package.json
index 48858dcb4b..ed5b0b430a 100644
--- a/packages/lint/package.json
+++ b/packages/lint/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/lint",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "repository": {
     "type": "git",
     "url": "https://github.com/heygen-com/hyperframes",
diff --git a/packages/parsers/package.json b/packages/parsers/package.json
index 9267a32c10..cce28e416f 100644
--- a/packages/parsers/package.json
+++ b/packages/parsers/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/parsers",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "repository": {
     "type": "git",
     "url": "https://github.com/heygen-com/hyperframes",
diff --git a/packages/player/package.json b/packages/player/package.json
index 7f935992a6..05f4278bf9 100644
--- a/packages/player/package.json
+++ b/packages/player/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/player",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "Embeddable web component for HyperFrames compositions",
   "repository": {
     "type": "git",
diff --git a/packages/producer/package.json b/packages/producer/package.json
index 76e817f52e..ea2dc5d636 100644
--- a/packages/producer/package.json
+++ b/packages/producer/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/producer",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "HTML-to-video rendering engine using Chrome's BeginFrame API",
   "repository": {
     "type": "git",
diff --git a/packages/sdk/package.json b/packages/sdk/package.json
index 32a1c874fd..e224e6d8e8 100644
--- a/packages/sdk/package.json
+++ b/packages/sdk/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/sdk",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "Headless, framework-neutral HyperFrames composition editing engine",
   "repository": {
     "type": "git",
diff --git a/packages/shader-transitions/package.json b/packages/shader-transitions/package.json
index 4d7b999da4..e5a16ae866 100644
--- a/packages/shader-transitions/package.json
+++ b/packages/shader-transitions/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/shader-transitions",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "WebGL shader transitions for HyperFrames compositions",
   "repository": {
     "type": "git",
diff --git a/packages/studio-server/package.json b/packages/studio-server/package.json
index f6adbd9473..6385c7956c 100644
--- a/packages/studio-server/package.json
+++ b/packages/studio-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/studio-server",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "repository": {
     "type": "git",
     "url": "https://github.com/heygen-com/hyperframes",
diff --git a/packages/studio/package.json b/packages/studio/package.json
index 11b28007c7..9110ebb9de 100644
--- a/packages/studio/package.json
+++ b/packages/studio/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/studio",
-  "version": "0.8.42",
+  "version": "0.8.43",
   "description": "",
   "repository": {
     "type": "git",
diff --git a/releases/v0.8.43.md b/releases/v0.8.43.md
new file mode 100644
index 0000000000..67db564ca5
--- /dev/null
+++ b/releases/v0.8.43.md
@@ -0,0 +1,19 @@
+# HyperFrames v0.8.43
+
+Released on 2026-09-16.
+
+Portrait compositions no longer render clipped when the project was scaffolded at a different size, and `hyperframes lint` now warns before you render when the scaffold's `html, body` size drifts from the root. Render telemetry gains per-tag and failure-type detail, and docs search shows catalog source file names correctly.
+
+## Fixes
+
+- **Core:** Size `html` and `body` to the composition root at runtime. A portrait composition (for example 1080x1920) in a project scaffolded landscape used to render only its top 1080px, with the page background below. It now renders the full frame. Fixes [#4001](https://github.com/heygen-com/hyperframes/issues/4001) ([eb0957a49](https://github.com/heygen-com/hyperframes/commit/eb0957a497208e72fda82952410d14dcb03cce77), [#4005](https://github.com/heygen-com/hyperframes/pull/4005)).
+- **Lint:** New `root_dimensions_mismatch` warning. It fires when the root's `data-width`/`data-height` disagree with the `html, body` CSS size or the viewport meta, so the drift shows up in `lint` and `check` before a render. Sub-compositions saved as full HTML documents can trigger this warning even though the parent composition sizes them; it does not affect renders, and a fix follows in the next patch ([eb0957a49](https://github.com/heygen-com/hyperframes/commit/eb0957a497208e72fda82952410d14dcb03cce77), [#4005](https://github.com/heygen-com/hyperframes/pull/4005)).
+- **Docs:** Catalog page "Source" section titles are now plain strings, so docs search shows the file name instead of `[object Object]` ([7b5fdb1ad](https://github.com/heygen-com/hyperframes/commit/7b5fdb1ad28347272d235edea7aa6a9c762d5e1c), [#4006](https://github.com/heygen-com/hyperframes/pull/4006)).
+
+## Features
+
+- **Telemetry:** `render_complete` events now include `composition_element_tags` (a count per element tag), `aroll_video_count`, and `heygen_video_count`. `render_error` events add `error_name` and `failed_stage_code`, so failures can be grouped by error type and pipeline stage ([3704863d9](https://github.com/heygen-com/hyperframes/commit/3704863d966aa2bbee305e69b4f8dbfa0b93090b), [#4004](https://github.com/heygen-com/hyperframes/pull/4004)).
+
+## Full changelog
+
+https://github.com/heygen-com/hyperframes/compare/v0.8.42...v0.8.43