Switching into Paragraph or RSVP mode while TTS is already playing now
syncs to the live session instead of forcing a stop + restart inside the
mode. Bundles several related TTS fixes uncovered along the way.
Session reuse (enter from normal mode):
- TTSController.redispatchPosition() re-emits the current position on the
canonical tts-position signal with a fresh sequence.
- useTTSControl answers a new tts-sync-request by replaying the current
position then playback state (position-first so RSVP's paused handler
can't discard it).
- Paragraph & RSVP engage following on entry and dispatch the request;
no-op when no session exists.
RSVP refinements:
- Reusing a session skips the start dialog and the get-ready countdown
(starts externally driven); gated on a live tts-playback-state signal
so the countdown can't flash.
- Stopping TTS now pauses RSVP instead of resuming its own pacing.
Word-sync fixes:
- rangeTextExcludingInert honours the range offsets inside a single text
node, fixing word-highlight drift on middle sentences of single-<span>
paragraphs (Edge word highlighting).
- foliate-js TTS.from() starts at the sentence containing the selection,
not the next one (submodule bump).
- Selecting a word and starting TTS now clears the selection.
- Dev-only [TTS] word-sync trace (stripped from production builds).
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Huang Xin
e327d0c992