Hex/Clients/RecordingClient.swift (2)

1090-1102: ⚡ Quick win

Core fix is correct for the described double-tap race.

The guard self.previousVolume == nil else { return } guard correctly threads through the stop-grace-period race:

• Session 1 mutes and saves previousVolume = 0.7 before its stopRecording() enters the grace period sleep.
• Session 2 starts during that sleep, recordingSessionID is reassigned; the guard sees previousVolume is still 0.7 (non-nil) and bails, preventing 0 from being snapshotted as the "original" volume.
• Session 1's stop detects the session mismatch and returns makeIgnoredStopURL() without calling resumeMediaIfNeeded(), so previousVolume is intentionally preserved.
• Session 2's stop then correctly restores 0.7.

One minor observability note: the early-return path has no log line. Adding a recordingLogger.notice(...) entry (e.g., "Skipping mute – volume already saved from prior session") would make it much easier to confirm the fix fired during manual or automated testing.

📋 Suggested observability improvement

         guard self.previousVolume == nil else {
+            recordingLogger.notice("Skipping mute – previousVolume already captured from overlapping session; preserving original level")
             return
         }

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@Hex/Clients/RecordingClient.swift` around lines 1090 - 1102, Add an
observability log when the .mute branch bails out due to a prior session already
having saved volume: inside the mediaControlTask closure in the case .mute,
before the early return guarded by "guard self.previousVolume == nil else {
return }", call recordingLogger.notice(...) (include sessionID and a short
message like "Skipping mute – volume already saved from prior session") so test
logs show when the guard path is taken; keep the rest of the logic
(muteSystemVolume(), setPreviousVolume(sessionID:)) unchanged.

---

1254-1293: ⚖️ Poor tradeoff

Pre-existing edge case: clearMediaState() runs asynchronously, leaving a narrow window where a rapid new session can skip muting.

resumeMediaIfNeeded() captures previousVolume into a local but clears the actor property only inside an unstructured Task { } (Line 1291). If startRecording() for a new session is scheduled on the actor before that Task runs, the new session's mute guard (guard self.previousVolume == nil) sees the stale non-nil value and exits without muting — leaving the user recording at full volume.

This is pre-existing and not introduced by this PR, but the new guard makes the window observable in a way it wasn't before. One hardening option is to clear previousVolume (and the other state flags) synchronously inside resumeMediaIfNeeded() immediately after snapshotting the locals, before spawning the restore Task:

🔒 Hardening sketch (not required for this PR)

 private func resumeMediaIfNeeded() async {
   let playersToResume = pausedPlayers
   let shouldResumeMedia = didPauseMedia
   let shouldResumeViaMediaRemote = didPauseViaMediaRemote
   let volumeToRestore = previousVolume
+  // Clear state synchronously so any subsequent startRecording() call
+  // sees clean state immediately, regardless of Task scheduling order.
+  clearMediaState()

   if !playersToResume.isEmpty || shouldResumeMedia || shouldResumeViaMediaRemote || volumeToRestore != nil {
     Task {
       if let volume = volumeToRestore {
         await self.restoreSystemVolume(volume)
       }
       // ... resume logic ...
-      self.clearMediaState()
     }
   }
 }

⚠️ Note: this only works safely if restoreSystemVolume completing before a new session's mute Task is acceptable. If Session 3 starts and mutes to 0 after clearMediaState() but before the restore Task runs, the restore Task will unmute during Session 3's recording. Consider whether an additional session-ID check is needed inside the restore Task before this change is applied.

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@Hex/Clients/RecordingClient.swift` around lines 1254 - 1293, The
resumeMediaIfNeeded() function captures actor state into locals
(playersToResume, shouldResumeMedia, shouldResumeViaMediaRemote,
volumeToRestore) then spawns an unstructured Task and only clears actor state
via clearMediaState() inside that Task, leaving a race where a new
startRecording() can see stale previousVolume; fix by calling clearMediaState()
synchronously on the actor immediately after snapshotting those locals and
before creating the Task so the actor properties (previousVolume, pausedPlayers,
didPauseMedia, didPauseViaMediaRemote) are cleared deterministically; keep the
async restore logic (restoreSystemVolume, resumeMediaApplications,
mediaRemoteController.send(.play), sendMediaKey) inside the Task, and if needed
consider adding a session-id check inside the Task to avoid restoring for a
newer session.

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes