diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index 0954225376..08108467dd 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": "0.7.85",
+  "version": "0.7.86",
   "author": {
     "name": "HeyGen",
     "email": "hyperframes@heygen.com",
diff --git a/.codex-plugin/plugin.json b/.codex-plugin/plugin.json
index 42e765658c..6696ba0ed2 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": "0.7.85",
+  "version": "0.7.86",
   "author": {
     "name": "HeyGen",
     "email": "hyperframes@heygen.com",
diff --git a/.cursor-plugin/plugin.json b/.cursor-plugin/plugin.json
index b3ea9cf8b0..de01392fcd 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": "0.7.85",
+  "version": "0.7.86",
   "author": {
     "name": "HeyGen",
     "email": "hyperframes@heygen.com"
diff --git a/docs/changelog.mdx b/docs/changelog.mdx
index 2a29a132d5..022d47cc85 100644
--- a/docs/changelog.mdx
+++ b/docs/changelog.mdx
@@ -8,6 +8,33 @@ 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 v0.7.86"
+  description="Released - 2026-07-30"
+  tags={["Release", "Studio", "Engine", "Contributing"]}
+>
+Hardens media probing against malformed frame rates, option-like file paths, and
+out-of-order PNG color metadata, while keeping Studio timeline latency telemetry
+non-negative. Contributor documentation now points to the correct Studio
+development port.
+
+## Fixes
+
+- **Studio:** Prevent negative timeline latency telemetry ([b813b1734](https://github.com/heygen-com/hyperframes/commit/b813b17345531874a00b3c755f60ee6f42849fee), [#2905](https://github.com/heygen-com/hyperframes/pull/2905))
+- **Engine:** Harden ffprobe parsing and command arguments ([f75ca076b](https://github.com/heygen-com/hyperframes/commit/f75ca076b790d38e518af892b67a9ea42cca3dd5), [#2740](https://github.com/heygen-com/hyperframes/pull/2740))
+
+## Docs & Examples
+
+- **Studio:** Document monorepo dev server port ([a52dd9c30](https://github.com/heygen-com/hyperframes/commit/a52dd9c3087c63a5c2c7f38d480961794d8c5eae), [#2902](https://github.com/heygen-com/hyperframes/pull/2902))
+- **Contributing:** Fix studio dev server port in setup guide ([ffe5e12cf](https://github.com/heygen-com/hyperframes/commit/ffe5e12cf8f404b86e019d28ca25dc75de903d57), [#2901](https://github.com/heygen-com/hyperframes/pull/2901))
+
+## Internal
+
+- **Pr To Video:** Pin the code-vocabulary section of the frame packet ([7b3d3db8a](https://github.com/heygen-com/hyperframes/commit/7b3d3db8adbfb7e04663d7373b9fd62c71321e6c), [#2900](https://github.com/heygen-com/hyperframes/pull/2900))
+
+[View the full commit range](https://github.com/heygen-com/hyperframes/compare/v0.7.85...v0.7.86).
+</Update>
+
 <Update
   label="HyperFrames v0.7.85"
   description="Released - 2026-07-30"
diff --git a/packages/aws-lambda/package.json b/packages/aws-lambda/package.json
index 886b61f6f0..11485cb2a8 100644
--- a/packages/aws-lambda/package.json
+++ b/packages/aws-lambda/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/aws-lambda",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "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 43f1d467d2..ab921f3627 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/cli",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "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 a4454202a9..f37ed4a587 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/core",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "description": "",
   "repository": {
     "type": "git",
diff --git a/packages/engine/package.json b/packages/engine/package.json
index 0b8f676575..73967375f3 100644
--- a/packages/engine/package.json
+++ b/packages/engine/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/engine",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "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 2b44d6acc0..2b26240a39 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": "0.7.85",
+  "version": "0.7.86",
   "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 59ccb7ce78..c6f7e40193 100644
--- a/packages/lint/package.json
+++ b/packages/lint/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/lint",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "repository": {
     "type": "git",
     "url": "https://github.com/heygen-com/hyperframes",
diff --git a/packages/parsers/package.json b/packages/parsers/package.json
index e7cc8708be..fa05da84bb 100644
--- a/packages/parsers/package.json
+++ b/packages/parsers/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/parsers",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "repository": {
     "type": "git",
     "url": "https://github.com/heygen-com/hyperframes",
diff --git a/packages/player/package.json b/packages/player/package.json
index 089c9b6441..d291c4d722 100644
--- a/packages/player/package.json
+++ b/packages/player/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/player",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "description": "Embeddable web component for HyperFrames compositions",
   "repository": {
     "type": "git",
diff --git a/packages/producer/package.json b/packages/producer/package.json
index 8974edcb25..6cd6408265 100644
--- a/packages/producer/package.json
+++ b/packages/producer/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/producer",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "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 267f89be11..4eabfd2852 100644
--- a/packages/sdk/package.json
+++ b/packages/sdk/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/sdk",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "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 63c19d4f28..88a23f3f98 100644
--- a/packages/shader-transitions/package.json
+++ b/packages/shader-transitions/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/shader-transitions",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "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 0216de4ab7..ae46c39693 100644
--- a/packages/studio-server/package.json
+++ b/packages/studio-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/studio-server",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "repository": {
     "type": "git",
     "url": "https://github.com/heygen-com/hyperframes",
diff --git a/packages/studio-server/src/helpers/manualEditsRenderScript.ts b/packages/studio-server/src/helpers/manualEditsRenderScript.ts
index 2d6dd39aa5..5624555995 100644
--- a/packages/studio-server/src/helpers/manualEditsRenderScript.ts
+++ b/packages/studio-server/src/helpers/manualEditsRenderScript.ts
@@ -659,6 +659,25 @@ function studioManualEditsRenderRuntime(
     }
     return applied;
   };
+  // `applyManifest` is redefined on every re-run of this script (each studio
+  // edit / soft reload injects a fresh copy of this whole runtime). Route the
+  // wrapped seek functions through this single mutable, window-scoped slot —
+  // rather than closing over `applyManifest` directly — so that if a wrapper
+  // installed by an EARLIER generation is still active (e.g. `isWrapped`
+  // below finds the current seek already marked and skips re-wrapping), it
+  // keeps calling the CURRENT manifest logic instead of a stale closure.
+  //
+  // This also means a stale wrapper's own closure no longer needs to retain
+  // that generation's `applyManifest` (and everything IT closed over —
+  // manifestEdits, resolveTarget, every apply* helper) for the wrapper's
+  // lifetime: once a newer generation overwrites this slot, the OLD
+  // `applyManifest` becomes collectible even if the old wrapper function
+  // object itself is still reachable (e.g. still wrapped-around by another
+  // studio seek-wrapping subsystem — see studioPositionSeekReapplyRuntime's
+  // installSeekTrap above, which wraps the same two functions independently).
+  // Confirmed via a DevTools retainer trace rooted at
+  // `__hfStudioManualEditsApply` during a long editing session that this
+  // closure chain was what stayed alive across repeated re-runs.
   runtimeWindow.__hfStudioManualEditsApply = applyManifest;
 
   const markWrapped = (fn: (time: number) => unknown): void => {
@@ -688,18 +707,22 @@ function studioManualEditsRenderRuntime(
     if (!fn) return false;
     const seek = fn as (time: number) => unknown;
     if (isWrapped(seek)) {
-      applyManifest();
+      runtimeWindow.__hfStudioManualEditsApply?.();
       return true;
     }
 
+    // Calls through the live slot (see above) rather than closing over
+    // `applyManifest` directly, so this wrapper always runs the CURRENT
+    // generation's apply logic even if it's an older wrapper left in place
+    // by a prior script generation.
     const wrappedSeek = function (this: unknown, time: number): unknown {
       const result = seek.call(this, time);
-      applyManifest();
+      runtimeWindow.__hfStudioManualEditsApply?.();
       return result;
     };
     markWrapped(wrappedSeek);
     set(wrappedSeek);
-    applyManifest();
+    runtimeWindow.__hfStudioManualEditsApply?.();
     return true;
   };
 
diff --git a/packages/studio/package.json b/packages/studio/package.json
index 1f5bf769a6..89a3e27cb9 100644
--- a/packages/studio/package.json
+++ b/packages/studio/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/studio",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "description": "",
   "repository": {
     "type": "git",
diff --git a/releases/v0.7.86.md b/releases/v0.7.86.md
new file mode 100644
index 0000000000..0811186e50
--- /dev/null
+++ b/releases/v0.7.86.md
@@ -0,0 +1,26 @@
+# HyperFrames v0.7.86
+
+Released on 2026-07-30.
+
+Hardens media probing against malformed frame rates, option-like file paths, and
+out-of-order PNG color metadata, while keeping Studio timeline latency telemetry
+non-negative. Contributor documentation now points to the correct Studio
+development port.
+
+## Fixes
+
+- **Studio:** Prevent negative timeline latency telemetry ([b813b1734](https://github.com/heygen-com/hyperframes/commit/b813b17345531874a00b3c755f60ee6f42849fee), [#2905](https://github.com/heygen-com/hyperframes/pull/2905))
+- **Engine:** Harden ffprobe parsing and command arguments ([f75ca076b](https://github.com/heygen-com/hyperframes/commit/f75ca076b790d38e518af892b67a9ea42cca3dd5), [#2740](https://github.com/heygen-com/hyperframes/pull/2740))
+
+## Docs & Examples
+
+- **Studio:** Document monorepo dev server port ([a52dd9c30](https://github.com/heygen-com/hyperframes/commit/a52dd9c3087c63a5c2c7f38d480961794d8c5eae), [#2902](https://github.com/heygen-com/hyperframes/pull/2902))
+- **Contributing:** Fix studio dev server port in setup guide ([ffe5e12cf](https://github.com/heygen-com/hyperframes/commit/ffe5e12cf8f404b86e019d28ca25dc75de903d57), [#2901](https://github.com/heygen-com/hyperframes/pull/2901))
+
+## Internal
+
+- **Pr To Video:** Pin the code-vocabulary section of the frame packet ([7b3d3db8a](https://github.com/heygen-com/hyperframes/commit/7b3d3db8adbfb7e04663d7373b9fd62c71321e6c), [#2900](https://github.com/heygen-com/hyperframes/pull/2900))
+
+## Full changelog
+
+https://github.com/heygen-com/hyperframes/compare/v0.7.85...v0.7.86