The CH badge by the scrubber is now a button opening a list of every chapter
(number, title, start time); the playing one is highlighted and scrolled into
view, a tap seeks there (and resumes if paused). Works with shared chapters and
YouTube's.
- frontend/wasm/loudness.c → loudness-wasm.js (1.5 KB, base64-embedded; built by
scripts/build-loudness-wasm.sh with clang or Zig's clang): K-weighting + 100 ms
energy steps. loudness.js does the 400 ms gating (abs -70 LUFS, rel -10 LU)
with an identical JS fallback. EBU Tech 3341 sine cases measure -23.0/-33.0
on both engines; a real track reads -21.7 vs ffmpeg ebur128 -21.8.
- The device measures from audio it already has (saved copy or the server
cache's m4a sidecar, songs up to 12 min, decoded natively at 22.05 kHz) and
reports the number to /api/loudness, so each song is measured once for
everyone; the server stores numbers only, no audio processing.
- The EQ graph gains a level stage (gain -> limiter) that eases each track
toward -14 LUFS (-12..+9 dB). Settings -> Playback -> Level volume: on by
default on Android/desktop, opt-in on iPhone (Web Audio stops sound when the
screen locks there).
- Server: chapters come from yt-dlp's `chapters` (creator chapters and
description timestamps) whenever a video is resolved, kept in a yt_chapters
table; GET /api/chapters?v= serves them (resolving once if needed, 30-day
cache) so server-cached copies get them too. Never fails the player.
- Player: a video's shared chapters win; with none, YouTube's stand in —
listed as "Chapters from YouTube", read-only (no edit/delete; + Chapter
copies them into an editable list). They drive the existing seek-bar ticks
(classic and Glass Stage), the chapter badge and the chapter list, and are
cached offline with the video's notes.
- Keys: [ previous chapter (restarts the current one when >3 s in), ] next.
- Channel pages join the select-mode views: tap Select in the filter row, pick
videos (or Select all — respects the filter), then + Queue / + Playlist.
Delete is hidden there (nothing to delete on a channel).
- --bottom-chrome (the fixed bottom nav + mini player height) is now measured
whenever the mini player shows/hides and on resize/rotation, not only while
the section rail scrolls, and the list pane pads its end by it, so the last
card scrolls fully clear with or without the mini player.
