diff --git a/CHANGELOG.md b/CHANGELOG.md
index 61bc77e..ad21316 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ Follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) · versioned wi
## [Unreleased]
### Changed
+- **Rehearser playback namespace migration.** WebAudio transport, decoded-buffer caching, line-audio caching, and batch
+ synthesis now use a private implementation scope with explicit compatibility exports and a tested namespace API.
- **Stateful Audiobook namespace migration.** Casting/recast orchestration and preview/export now keep internal helpers
private and publish their public compatibility surface explicitly through `window.TTVC.audiobook`.
- **Pure leaf namespace migration.** Rehearser parsing/training and Audiobook parsing/segmentation helpers now keep
diff --git a/TODO.md b/TODO.md
index 7d18429..a6d7d32 100644
--- a/TODO.md
+++ b/TODO.md
@@ -124,8 +124,9 @@ architecture change: the larger Audiobook/Rehearser/style split.
voice design, I/O, library, stage, and recording blocks plus Audiobook casting, preview, export, and feature styles
are isolated. Core Reader state and compatibility event wiring remain ordered in the legacy entry points.
- [x] Extract Rehearser stage display and cast-sidebar controls into `rehearser-stage.js`.
-- [ ] Replace broad globals with namespaces such as `window.TTVC.audiobook`; pure leaf modules now use private scopes
- with explicit compatibility exports, while stateful modules continue the responsibility-by-responsibility migration.
+- [ ] Replace broad globals with namespaces such as `window.TTVC.audiobook`; pure leaves, Audiobook state modules, and
+ Rehearser playback now use private scopes with explicit compatibility exports. Remaining Rehearser state modules still
+ require the same responsibility-by-responsibility migration.
- [x] Generate the feature-module list for `loader.js` and `scripts/minify.mjs` from one shared manifest;
larger responsibility splits remain.
- [x] Add a dependency-free frontend syntax and top-level declaration collision gate (`npm run check:frontend`);
diff --git a/VERSION b/VERSION
index a06c28e..74eb4d2 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.24.58
+1.24.59
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 344b028..7b94c94 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -49,6 +49,7 @@ Done incrementally as global-scope ordered files (no ES-module change needed)
- ✅ `audiobook-pipeline.js` — LLM casting, unknown-speaker recast, automatic repair, and cast-view orchestration.
- ✅ `audiobook-preview-export.js` — editable cast preview, Rehearser handoff, chapter-aware export, and export browsing.
- ✅ Stateful Audiobook modules use private scopes with explicit legacy exports; their public APIs are namespace-tested.
+- ✅ Rehearser playback uses a private scope with explicit transport/cache compatibility exports and a namespace-tested API.
- ✅ `static/css/resource-diagnostics.css` — isolated Performance/resource diagnostic panel styles.
- ✅ `static/css/background-jobs.css` — isolated background-job history and retry-panel styles.
- ✅ `static/css/voice-design.css` — isolated Voice Design form, samples, and preview-match styles.
diff --git a/static/index.html b/static/index.html
index 44f5d90..e58b2cd 100644
--- a/static/index.html
+++ b/static/index.html
@@ -10,7 +10,7 @@
-
+
@@ -27,12 +27,12 @@
-
-
-
-
-
-
+
+
+
+
+
+
@@ -397,7 +397,7 @@ window.toggleNavTree = function(treeId, chevronId) {
-
+