Two interlocking reversibility kills, fixed as one bundle:
Rev-2 (hard-DELETE transcripts, no trash) — delete_transcript previously
issued DELETE FROM transcripts WHERE id = ?, so a single click on the
History "Clear All" / "Confirm" button erased months of dictation with no
trash, no export, no undo. The new contract:
* delete_transcript UPDATEs deleted_at = datetime('now') and best-effort
removes the audio file. Idempotent on repeat call.
* Migration v16 adds `deleted_at TEXT` plus a partial index over the trash
rows so the purge query stays cheap on long-running databases.
* get_transcript, list_transcripts_paged, count_transcripts, and
search_transcripts all filter `deleted_at IS NULL` so trash rows are
invisible to the regular history view but kept for restore.
* New list_trashed_transcripts and restore_transcript power the inverse
trash view; row order is most-recently-deleted first.
* New purge_deleted_transcripts(older_than_days) hard-removes trash
older than the retention window. Wired into the Tauri setup hook at
30-day retention; best-effort, never blocks startup.
Rev-3 (orphan WAV files on transcript delete) — same delete_transcript
function. Audio file at audio_path is now best-effort removed when the
soft-delete actually flips a row; NotFound is the expected case for
repeat deletes and is not logged. purge_deleted_transcripts also retries
audio removal as belt-and-braces.
Adds 4 regression tests: delete_transcript_soft_deletes,
delete_transcript_removes_audio_file, list_transcripts_excludes_soft_deleted
(also covers restore_transcript), and purge_deleted_transcripts_hard_deletes_old.
Plus migration_v16_adds_deleted_at_column_and_index already in place.
Frontend UI (HistoryPage clearAll type-the-word modal + View trash path)
deferred to a follow-up commit; the backend contract is complete and the
existing arm-confirm flow now soft-deletes instead of hard-deleting, so
the user-data-loss class is closed for the live release path. Rev-4
(SettingsPage deleteProfile routing) also deferred.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>