The stale-prefetch reset effect compared prefetchedFor against nextChapter
only, so when landing on chapter N+1 (prefetchedFor=N+1, nextChapter=N+2)
it would destroy the pre-fetched URL before startPlayback() could use it,
breaking every auto-next transition after the first.
Fix: also allow prefetchedFor === chapter (current page) so the URL
survives long enough to be consumed, then only wipe truly foreign values.
When autoNext is on, kick off prefetchNext() as soon as the current
chapter begins playing (all three success paths in startPlayback).
This gives the full chapter duration as lead time for Kokoro TTS
instead of only the last 10%, making auto-next transitions seamless.
The existing 90%-mark $effect is kept as a fallback for cases where
autoNext is toggled on mid-playback after startPlayback has returned.
- Add NextStatus type and prefetch state (nextStatus, nextAudioUrl, nextProgress, nextChapterPrefetched) to AudioStore
- AudioPlayer triggers prefetchNext() when currentTime/duration >= 0.9, autoNext is on, and a next chapter exists
- startPlayback() uses the pre-fetched URL if available (skipping presign round-trip and generation wait)
- Auto-next button in layout shows a pulsing dot while prefetching and a green dot when ready
- AudioPlayer shows inline prefetch progress and ready state below the controls
- Fix indentation regression in layout onended handler
- Clear autoStartPending if goto() fails to avoid spurious auto-starts on future navigations
- Clear audioStore.nextChapter on AudioPlayer unmount so a stale chapter can't trigger navigation after leaving a chapter page
- Remove redundant nextChapter write in startPlayback() — the already keeps it in sync
- Replace double inline player controls with compact 'now playing' indicator when mini-bar is active
- Add user_settings PocketBase collection (auto_next, voice, speed) and audio_time field on progress
- Add getSettings/saveSettings/setAudioTime/getAudioTime server functions
- Add GET/PUT /api/settings and GET/PATCH /api/progress/audio-time API routes
- Load settings server-side in layout and apply to audioStore on mount
- Debounced 800ms effect persists settings changes to DB
- Save audio currentTime on pause/end; restore position when replaying a chapter
When autoNext is enabled, audio automatically advances to the next chapter
when a track ends — navigating the page and starting the new chapter's audio.
- audioStore: add autoNext (toggle flag), nextChapter (written by AudioPlayer),
and autoStartPending (set before goto, cleared after auto-start fires)
- layout: update onended to call goto() and set autoStartPending when autoNext
is on and nextChapter is available; add auto-next toggle button to mini-player
bar (double-chevron icon, amber when active)
- AudioPlayer: accept nextChapter prop; write it to audioStore via $effect;
auto-start playback when autoStartPending is set on component mount; show
inline 'Auto' toggle button in ready controls when a next chapter exists
- Chapter page: pass data.next as nextChapter prop to AudioPlayer
- Add audio.svelte.ts: module singleton AudioStore (Svelte 5 runes) with
slug/chapter/title metadata, status, progress, playback state, and
toggleRequest/seekRequest signals for layout<->audio element communication
- Rewrite AudioPlayer.svelte as a store controller: no <audio> element owned;
drives audioStore for presign->generate->play flow; shows inline controls
when current chapter is active, 'Now playing / Load this chapter' banner
when a different chapter is playing
- Update +layout.svelte: single persistent <audio> outside {#key} block so
it never unmounts on navigation; effects to load URL, sync speed, handle
toggle/seek requests; fixed bottom mini-player bar with seek, skip 15s/30s,
speed cycle, go-to-chapter link, dismiss; pb-24 padding when active
- Pass chapterTitle and bookTitle from chapter page to AudioPlayer
- Single 'Play narration' button: checks presign first, plays immediately if audio exists, otherwise triggers generation
- During generation shows an animated pseudo progress bar: slow start (4%/s) → accelerates (12%/s at 30%) → slows near 80% (4%/s) → crawls to 99% (0.3%/s)
- When generation completes, bar jumps to 100% then transitions to audio player
- Auto-plays audio after generation completes
