Do not auto-attribute segments that fuse several speakers' turns (v1.20.26)

A trailing inquit names only the last speaker, so applying it to a block
holding multiple turns silently mis-credited the earlier one — a wrong
attribution is invisible where an Unknown is not. Such blocks are now skipped
by the grammar rules and left for the LLM pass or a manual split.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -22,6 +22,11 @@ Follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) · versioned wi
 - **Emotion instructions are now always written in English**, even for non-English voices (the spoken text and the native-accent clause stay in the book's own language). Confirmed by controlled A/B testing — same line, same voice, only the instruct language varying — that Qwen3-TTS follows English emotion instructions far more reliably: German instructs produced barely-differentiated output, while English instructs yield a clean, correctly-ordered prosodic gradient (whisper 128 Hz → sad 142 → neutral 179 → scared 203 → happy 225 → angry 269 Hz), with sensible duration changes too (sad slowest, scared fastest).
 - **Fish-Speech generation parameters (`temperature` / `top_p` / `repetition_penalty`) were never forwarded.** Every Fish-Speech line synthesized at the server's fixed defaults, ignoring the app's per-backend stability settings — the only backend not routed through the shared `_apply_tts_extra_params` helper.
 
+## [1.20.26] — 2026-08-12
+
+### Fixed
+- **Segments fusing two speakers' turns are no longer auto-attributed to one of them.** A trailing inquit only names the *last* speaker, so applying it to a block containing several turns ("…ausliefern und …" + "Er hat es nicht so gemeint" + ", unterbrach die blonde Perdia Lysandra.") silently mis-credited the earlier turn — worse than leaving it Unknown, because a wrong attribution is invisible while an Unknown is not. Blocks holding multiple turns are now skipped by the grammar rules and left for the LLM pass or manual splitting.
+
 ## [1.20.25] — 2026-08-12
 
 ### Fixed

VERSION

@@ -1 +1 @@
-1.20.25
+1.20.26

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="1.20.25">
+  <meta name="app-version" content="1.20.26">
   <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">
@@ -27,7 +27,7 @@
 
   <!-- ── 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=1.20.25">
+  <link rel="stylesheet" href="/static/style.css?v=1.20.26">
 
 
   <!-- ── Flag icons — non-blocking (loaded async, icons appear after JS) ── -->
@@ -378,7 +378,7 @@ window.toggleNavTree = function(treeId, chevronId) {
 </script>
 
 <!-- loader.js: fetches sections → loads JS modules → removes skeleton -->
-<script src="/static/loader.js?v=1.20.25"></script>
+<script src="/static/loader.js?v=1.20.26"></script>
 
 </body>
 </html>

static/js/audiobook.js

@@ -804,8 +804,15 @@ function audiobookResolveUnknowns(segs, prevTail, roster) {
     // mistyped it as dialogue — confirmed live: the quote before such a segment
     // stayed Unknown purely because the inquit carried the wrong type. Accept
     // either type here and repair the type while we are at it.
-    const _nextIsInquitText = next && new RegExp('^\\W{0,3}(?:' + AB_SPEECH_VERBS + ')\\b').test(String(next.text || '').trim());
-    if (!who && (next?.type === 'narration' || _nextIsInquitText)) {
+    // A segment holding several turns separated by a blank line is TWO speakers
+    // fused into one ("...ausliefern und ...\n\nEr hat es nicht so gemeint" —
+    // Lysandra, then Perdia interrupting). A trailing inquit only names the LAST
+    // speaker, so applying it to the whole block silently mis-credits the earlier
+    // turn. Leaving it Unknown is the honest outcome: visibly unresolved beats
+    // confidently wrong, and the split can then be made by hand or by the LLM pass.
+    const _isFusedTurns = /\n\s*\n/.test(String(s.text || '').trim());
+    const _nextIsInquitText = !_isFusedTurns && next && new RegExp('^\\W{0,3}(?:' + AB_SPEECH_VERBS + ')\\b').test(String(next.text || '').trim());
+    if (!who && !_isFusedTurns && (next?.type === 'narration' || _nextIsInquitText)) {
       const nt = String(next.text || '').trim();
       // Split quote whose inquit uses a PRONOUN rather than a name:
       // "»Ja, ungewöhnlich«" + ", antwortete er knapp." The rules below all