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Podcast mode: notes read aloud with a lyric-style word highlight

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The third segment of the note-powered wizards (Study deck / Homework /
Podcast) takes the same intake - photos, documents, pasted text, the share
target - and turns it into a spoken episode.

- prompts: PODCAST_SYSTEM_PROMPT writes for the ear (plain prose, no markdown,
  no visual references), chaptered into 3-8 sections around a length target.
- /api/podcast mirrors /api/generate's plumbing (rate limit, model gate,
  provider keys, heartbeats, the 2x deadline, the optional vision pass).
- storage: frezmo.podcasts.v1, zod-validated, included in the backup and the
  encrypted sync payload; a new library tab lists episodes with listen /
  rename / delete-with-undo, and the wizard switch deep-links in.
- player: the transcript is word-wrapped spans and the word under the voice
  rides a lyric-style highlight that keeps itself centred. Two clocks: exact
  onboundary events where the browser reports them, a per-word length timer
  where it does not (iOS Safari); the first boundary retires the timer.
  Pause = cancel + re-speak from the word, which makes resume, chapter jumps
  and tap-any-word-to-seek the same operation; the position saves on pause,
  page-hide and unmount, so reopening resumes. Speed rebuilds the engine and
  keeps playing; the Aero soundtrack pauses itself when the voice starts; a
  browser with no voice gets an honest note and a readable transcript.
- the script sits on a glass pane (plain paragraphs over Aero's grass failed
  contrast; the scan now covers the player too).

tests/podcast-test.mjs (17th suite) stubs the model and the speech engine and
drives the highlight by hand: 26 checks. All suites green, contrast clean.
Version 0.7.3, SW v95.
This commit is contained in:
Martin Dvořák 2026-10-16 11:42:15 +00:00
commit d95c5c7151
30 changed files with 2575 additions and 26 deletions
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tests/README.md
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@ -35,6 +35,7 @@ prints a per-suite summary at the end.
| `native-test.mjs` | Manifest/PWA head, offline banner + disabled generate, share target GET + POST, Back-gesture layers, undo toast, tab re-tap, haptics, draft restore. |
| `i18n-test.mjs` | EN/CS dictionary parity, locale switch, Czech desktop shell, Czech phone tab labels and plurals. |
| `freeze-loading-test.mjs` | The generation loading screen appears immediately, hides the action bar, Cancel returns with the notice. |
| `podcast-test.mjs` | Podcast mode against a stub Ollama and a stubbed speech engine: the third wizard segment, notes → a saved episode, the word-wrapped transcript, boundary-driven highlighting (and the timer fallback's contract), pause/resume-from-word, chapter jumps, speed changes that keep playing, the position saved on page-hide and resumed on reopen, the library tab, and the API's 400/stream guards. |
| `review-test.mjs` | Smart Review loading feedback under a stalled request, the session end-to-end, mistakes, and the health-probe cache. |
| `phase1-test.mjs` | Backup export/import, persistence row, nudge, encrypted sync (enable/join/push/delete + API validation), usage-limit handling (client + a stub Ollama). |
| `phase2-test.mjs` | Answer history + SRS from a real study run, review/mistakes, stats, exam mode, push reminders hidden without VAPID and validated with it. |