Refactor ETag generation for oneliners API

Remove the per-user oneliner watermark, which was previously used to generate ETags for the `/api/oneliners` endpoint. The watermark was intended to track the last successful oneliner write for each user. The ETag generation has been refactored to use a deterministic FNV-1a hash. This hash is computed over a sorted list of tuples containing `(case_id, last_recording_at_ns, oneliner_mtime_ns)` for all visible cases. This approach ensures that the ETag changes whenever any listen-relevant file system modification occurs, such as a new recording, oneliner regeneration, soft-delete, undo, or upload-auto-reopen. This new method is more robust and avoids the complexity of managing per-user state. The `OnelinerWatermark` type alias and its associated logic have been removed from `AppState` and the relevant modules (`transcribe::worker`, `transcribe::recovery`, `routes::oneliners`, `main`). New integration tests have been added to verify that various delete operations (single delete, undo delete, bulk delete) correctly trigger an ETag update, ensuring cache invalidation.
2026-04-19 14:47:30 +02:00
parent 5e8d2f8e58
commit a1ff410d1b
11 changed files with 425 additions and 80 deletions
@@ -41,8 +41,12 @@ pub struct CaseMarker {
    /// updates. Drives the UI sort order (newest activity first).
    pub last_activity_at: String,
    /// `true` once this case has been seen in any `/api/oneliners`
-    /// response. Reserved for future delete-propagation logic; today only
-    /// useful for diagnostics.
+    /// response or after a successful upload ACK. Drives two clean-up
+    /// paths: [`CaseStore::reconcile_with_server_snapshot`] only removes
+    /// synced markers the server no longer lists, and
+    /// [`CaseStore::cleanup_stale`] only ages out synced markers. Pending
+    /// (`= false`) markers guard unsent uploads and are never touched by
+    /// either — losing one would silently erase a patient recording.
    pub synced_to_server: bool,
    /// `None` while transcription / oneliner generation is pending; set
    /// from the server snapshot when available.