diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0d02c30..7a63c6b 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 voice-design namespace migration.** Character development and backend-refresh controls now use a private
+  scope with explicit compatibility exports and the existing voice-design namespace.
 - **Rehearser voice-picker namespace migration.** Local matching, preview state, Fish.audio search/import, and candidate
   assignment now use a private scope with explicit compatibility exports.
 - **Rehearser stage namespace migration.** Stage scaling, cast-sidebar controls, and strip rendering now use a private
diff --git a/VERSION b/VERSION
index ca69093..dd89f4d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.24.69
+1.24.70
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 715f6b8..15ace87 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -59,6 +59,7 @@ Done incrementally as global-scope ordered files (no ES-module change needed) 
 - ✅ Audiobook network transport uses a private scope with explicit timeout/stream compatibility exports.
 - ✅ Rehearser stage controls use a private scope with explicit scaling and cast-sidebar compatibility exports.
 - ✅ Rehearser voice-picker uses a private scope with explicit preview, search, and assignment compatibility exports.
+- ✅ Rehearser voice-design uses a private scope with explicit development and backend-refresh compatibility exports.
 - ✅ `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 5b409b7..3a92cf5 100644
--- a/static/index.html
+++ b/static/index.html
@@ -10,7 +10,7 @@
   <meta name="format-detection" content="telephone=no">
   <meta name="color-scheme" content="light dark">
   <meta name="theme-color" content="#2563EB">
-  <meta name="app-version" content="1.24.69">
+  <meta name="app-version" content="1.24.70">
   <link rel="manifest" href="/manifest.webmanifest">
   <link rel="icon" href="/static/icon.svg" type="image/svg+xml">
   <link rel="apple-touch-icon" href="/static/icon.svg">
@@ -27,12 +27,12 @@
 
   <!-- ── Core styles (local — no CDN dependency for first paint) ────────── -->
   <link rel="stylesheet" href="/static/vendor/mdi/materialdesignicons.min.css">
-  <link rel="stylesheet" href="/static/style.css?v=1.24.69">
-  <link rel="stylesheet" href="/static/css/resource-diagnostics.css?v=1.24.69">
-  <link rel="stylesheet" href="/static/css/background-jobs.css?v=1.24.69">
-  <link rel="stylesheet" href="/static/css/voice-design.css?v=1.24.69">
-  <link rel="stylesheet" href="/static/css/rehearser.css?v=1.24.69">
-  <link rel="stylesheet" href="/static/css/audiobook.css?v=1.24.69">
+  <link rel="stylesheet" href="/static/style.css?v=1.24.70">
+  <link rel="stylesheet" href="/static/css/resource-diagnostics.css?v=1.24.70">
+  <link rel="stylesheet" href="/static/css/background-jobs.css?v=1.24.70">
+  <link rel="stylesheet" href="/static/css/voice-design.css?v=1.24.70">
+  <link rel="stylesheet" href="/static/css/rehearser.css?v=1.24.70">
+  <link rel="stylesheet" href="/static/css/audiobook.css?v=1.24.70">
 
 
   <!-- ── Flag icons — non-blocking (loaded async, icons appear after JS) ── -->
@@ -397,7 +397,7 @@ window.toggleNavTree = function(treeId, chevronId) {
 </script>
 
 <!-- loader.js: fetches sections → loads JS modules → removes skeleton -->
-<script src="/static/loader.js?v=1.24.69"></script>
+<script src="/static/loader.js?v=1.24.70"></script>
 
 </body>
 </html>
diff --git a/static/js/rehearser-voice-design.js b/static/js/rehearser-voice-design.js
index 6a67feb..510e1f0 100644
--- a/static/js/rehearser-voice-design.js
+++ b/static/js/rehearser-voice-design.js
@@ -2,6 +2,8 @@
 // Character development and backend selection resolve the shared Rehearser
 // state at interaction time, so they can be loaded as a leaf feature module.
 
+(function (root) {
+
 async function _castDevelop(sp, btn) {
   const script = $('reh-script-text')?.value.trim() || linesToScriptText();
   if (!script) { toast('Load a script first', 'error'); return; }
@@ -64,6 +66,8 @@ async function refreshRehBackends() {
   rehState.backend = sel.value || '';
 });
 
-window.TTVC = window.TTVC || {};
-window.TTVC.rehearser = window.TTVC.rehearser || {};
-window.TTVC.rehearser.voiceDesign = { develop: _castDevelop, refreshBackends: refreshRehBackends };
+Object.assign(root, { _castDevelop, refreshRehBackends });
+root.TTVC = root.TTVC || {};
+root.TTVC.rehearser = root.TTVC.rehearser || {};
+root.TTVC.rehearser.voiceDesign = { develop: _castDevelop, refreshBackends: refreshRehBackends };
+})(window);