fix(run-engine): move design docs out of the Mintlify docs/ tree; format

check-broken-links parses every .md under docs/ as MDX and can't parse the plain-
markdown plan (code/angle brackets), failing CI. These are engine design docs, not
user documentation, so relocate docs/superpowers/{plans,references} (plan,
findings, research, diagrams) to internal-packages/run-engine/design/ and fix the
internal path references. Also run oxfmt on runEngine.server.ts (missed after the
review fix wave), fixing code-quality.

Author: 1stvamp

apps/webapp/app/v3/runEngine.server.ts

@@ -106,15 +106,14 @@ function createRunEngine() {
         batchMaxSize: env.RUN_ENGINE_TTL_WORKER_BATCH_MAX_SIZE,
         batchMaxWaitMs: env.RUN_ENGINE_TTL_WORKER_BATCH_MAX_WAIT_MS,
       },
-      ckVirtualTimeScheduling:
-        env.RUN_ENGINE_CK_VTIME_SCHEDULING_ENABLED
-          ? {
-              enabled: true,
-              quantum: env.RUN_ENGINE_CK_VTIME_QUANTUM,
-              scanWindowMultiplier: env.RUN_ENGINE_CK_VTIME_WINDOW_MULTIPLIER,
-              stateTtlSeconds: env.RUN_ENGINE_CK_VTIME_STATE_TTL_SECONDS,
-            }
-          : undefined,
+      ckVirtualTimeScheduling: env.RUN_ENGINE_CK_VTIME_SCHEDULING_ENABLED
+        ? {
+            enabled: true,
+            quantum: env.RUN_ENGINE_CK_VTIME_QUANTUM,
+            scanWindowMultiplier: env.RUN_ENGINE_CK_VTIME_WINDOW_MULTIPLIER,
+            stateTtlSeconds: env.RUN_ENGINE_CK_VTIME_STATE_TTL_SECONDS,
+          }
+        : undefined,
     },
     runLock: {
       redis: {

…07-23-ck-virtual-time-scheduling-plan.md …07-23-ck-virtual-time-scheduling-plan.mddocs/superpowers/plans/2026-07-23-ck-virtual-time-scheduling-plan.md renamed to internal-packages/run-engine/design/plans/2026-07-23-ck-virtual-time-scheduling-plan.md docs/superpowers/plans/2026-07-23-ck-virtual-time-scheduling-plan.md renamed to internal-packages/run-engine/design/plans/2026-07-23-ck-virtual-time-scheduling-plan.md

@@ -4,7 +4,7 @@ Implementation and testing plan for the recommendation out of three fairness
 spikes. The spike harness and benchmark code are archived on the remote branch
 `chore/fair-queueing-spike` (throwaway, never merged); the findings and research
 they produced are kept alongside this plan as references:
-`docs/superpowers/references/run-queue-fairness-ck-findings.md`,
+`internal-packages/run-engine/design/references/run-queue-fairness-ck-findings.md`,
 `.../run-queue-fairness-caps-vs-scheduling-findings.md`, and
 `.../run-queue-fairness-research.md`.
 
@@ -298,7 +298,7 @@ File: `index.ts` (RunQueueOptions, ~line 60).
 /**
  * Fair (virtual-time / SFQ) ordering across concurrency-key variants of a
  * base queue. Off by default; when off, the exact pre-existing Lua commands
- * run and no vtime keys are created. See docs/superpowers/plans/
+ * run and no vtime keys are created. See internal-packages/run-engine/design/plans/
  * 2026-07-23-ck-virtual-time-scheduling-plan.md.
  */
 ckVirtualTimeScheduling?: {

docs/superpowers/references/README.md …s/run-engine/design/references/README.mddocs/superpowers/references/README.md renamed to internal-packages/run-engine/design/references/README.md docs/superpowers/references/README.md renamed to internal-packages/run-engine/design/references/README.md

@@ -1,7 +1,7 @@
 # Run-queue multi-tenant fairness: spike references
 
 Reference material for the implementation plan
-`docs/superpowers/plans/2026-07-23-ck-virtual-time-scheduling-plan.md`. These are
+`internal-packages/run-engine/design/plans/2026-07-23-ck-virtual-time-scheduling-plan.md`. These are
 the findings and the queueing-theory research produced by three throwaway spikes
 on RunQueue tenant fairness (#2617). The spikes' harness, bench, and results code
 was throwaway and is NOT on this branch; it is archived on the remote branch