test: preserve dialogue-only recast merges

CHANGELOG.md

@@ -8,6 +8,8 @@ Follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) · versioned wi
 ## [Unreleased]
 
 ### Changed
+- **Dialogue-only merge regression coverage.** Recast/verify normalization now has explicit browser coverage proving that
+  only adjacent known-speaker dialogue merges; narration and unknown-speaker lines remain separate.
 - **Visual identity regression coverage.** Portrait and concept-sheet prompt tests now verify shared identity anchors;
   completed pairs centralize prompt-version, identity-fingerprint, and asset-digest metadata.
 - **Frontend namespace migration completed.** The remaining utility, library, cast-compatibility, i18n, and settings/log

TODO.md

@@ -268,7 +268,7 @@ codebase; benefit is relative user/reliability impact.
 
 - [x] **P1 / M — High benefit — Identity-anchor regression tests.** Add automated coverage proving avatar and concept-sheet
   requests share canonical identity anchors and persist the prompt version used for each generated asset.
-- [ ] **P1 / S–M — Medium benefit — Preserve dialogue-only merging.** Keep the dialogue-only merge for recast/verify
+- [x] **P1 / S–M — Medium benefit — Preserve dialogue-only merging.** Keep the dialogue-only merge for recast/verify
   outputs where adjacent pairs still occur, with regression coverage for the non-dialogue boundaries.
 - [ ] **P1 / L–XL — Very high benefit — Rework segmentation from Run 3.** Inspect the earlier dialogue split/fusion
   stages and correct the dominant unmatched-segment class using the measured Run 3 artifacts.

VERSION

@@ -1 +1 @@
-1.24.99
+1.25.0

docs/ARCHITECTURE.md

@@ -88,6 +88,7 @@ Done incrementally as global-scope ordered files (no ES-module change needed)
 - ✅ All remaining application frontend modules are either privately scoped or intentionally stateless bootstrap/cache IIFEs;
   legacy globals are explicit compatibility exports and new integrations use `window.TTVC` namespaces.
 - ✅ Visual pair generation centralizes prompt-version, identity-fingerprint, and asset-digest metadata with regression coverage for shared anchors.
+- ✅ Recast/verify dialogue merging has regression coverage for known-speaker-only behavior and non-dialogue boundaries.
 - ✅ `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.

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="1.24.99">
+  <meta name="app-version" content="1.25.0">
   <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=1.24.99">
-  <link rel="stylesheet" href="/static/css/resource-diagnostics.css?v=1.24.99">
-  <link rel="stylesheet" href="/static/css/background-jobs.css?v=1.24.99">
-  <link rel="stylesheet" href="/static/css/voice-design.css?v=1.24.99">
-  <link rel="stylesheet" href="/static/css/rehearser.css?v=1.24.99">
-  <link rel="stylesheet" href="/static/css/audiobook.css?v=1.24.99">
+  <link rel="stylesheet" href="/static/style.css?v=1.25.0">
+  <link rel="stylesheet" href="/static/css/resource-diagnostics.css?v=1.25.0">
+  <link rel="stylesheet" href="/static/css/background-jobs.css?v=1.25.0">
+  <link rel="stylesheet" href="/static/css/voice-design.css?v=1.25.0">
+  <link rel="stylesheet" href="/static/css/rehearser.css?v=1.25.0">
+  <link rel="stylesheet" href="/static/css/audiobook.css?v=1.25.0">
 
 
   <!-- ── 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=1.24.99"></script>
+<script src="/static/loader.js?v=1.25.0"></script>
 
 </body>
 </html>

tests/lazy-loading.spec.js

@@ -41,6 +41,34 @@ test('Audiobook lazy modules publish their namespace APIs after loading', async
   }))).toEqual({ castView: 'function', stream: 'function', startCast: 'function', pipelineCast: 'function', core: 'function', preview: 'function', exportAudio: 'function' });
 });
 
+test('Audiobook recast merge preserves narration and merges only known dialogue pairs', async ({ page }) => {
+  await page.goto('/', { waitUntil: 'domcontentloaded' });
+  await page.waitForFunction(() => typeof window.navTo === 'function', null, { timeout: 15_000 });
+  await page.waitForSelector('#app-skeleton', { state: 'detached', timeout: 15_000 });
+  await page.evaluate(() => window.navTo('s-reader'));
+  await page.waitForFunction(() => typeof window.TTVC?.audiobook?.cast?.mergeAdjacentDialogue === 'function', null, { timeout: 15_000 });
+  await expect.poll(() => page.evaluate(() => {
+    const merge = window.TTVC.audiobook.cast.mergeAdjacentDialogue;
+    return merge([
+      { type: 'narration', speaker: 'Narrator', text: 'A.' },
+      { type: 'narration', speaker: 'Narrator', text: 'B.' },
+      { type: 'dialogue', speaker: 'Mira', text: 'C.' },
+      { type: 'dialogue', speaker: 'Mira', text: 'D.' },
+      { type: 'dialogue', speaker: 'Unknown', text: 'E.' },
+      { type: 'dialogue', speaker: 'Unknown', text: 'F.' },
+    ]);
+  })).toEqual({
+    segments: [
+      { type: 'narration', speaker: 'Narrator', text: 'A.' },
+      { type: 'narration', speaker: 'Narrator', text: 'B.' },
+      { type: 'dialogue', speaker: 'Mira', text: 'C.\n\nD.' },
+      { type: 'dialogue', speaker: 'Unknown', text: 'E.' },
+      { type: 'dialogue', speaker: 'Unknown', text: 'F.' },
+    ],
+    merged: 1,
+  });
+});
+
 test('Rehearser playback module publishes transport APIs after loading', async ({ page }) => {
   await page.goto('/', { waitUntil: 'domcontentloaded' });
   await page.waitForFunction(() => typeof window.navTo === 'function', null, { timeout: 15_000 });