Extract queue module, add comprehensive tests, fix queue/play bugs

• Moved Queue, Track, ShuffleMode, AudioMetadata from daemon.rs into new src/queue.rs module with public API\n• Fixed rsp play <file> interrupting active playback (now checks is_playing)\n• Fixed directory play -n/-i inserting files in reverse order (now uses .iter().rev())\n• Removed dead duplicate shuffle handler in process_command\n• Fixed queue display showing (playing) when playback is stopped\n• Added 34 tests covering navigation, shuffle, insert ordering, edge cases, display

1 files changed, 6 insertions, 2 deletions

diff --git a/TODO.md b/TODO.md
index 68a0cf0..945f244 100644
--- a/TODO.md
+++ b/TODO.md
@@ -48,12 +48,16 @@
 
 - [x] **Shell completions** - Generate shell completions with `rsp completions bash|elvish|fish|powershell|zsh`.
 
+- [x] **Extract queue module** - Moved `Queue`, `Track`, `ShuffleMode`, `AudioMetadata` from daemon into `src/queue.rs` with public API and accessor methods.
+
+- [x] **Comprehensive queue tests** - 34 tests covering navigation, shuffle, insert ordering, edge cases, and display.
+
+- [x] **Fix queue/play bugs** - `rsp play <file>` no longer interrupts playback when something is already playing; directory `play -n`/`play -i` now inserts in correct order; removed dead duplicate shuffle handler; queue display no longer shows `(playing)` when playback is stopped.
+
 ## Remaining Work
 
 - [ ] **Persist queue state** - Save queue to disk so it survives daemon restarts.
 
 - [ ] **Scrobbling (Last.fm/ListenBrainz)** - Add scrobbling support via configured credentials.
 
-- [ ] **Shell completion scripts** - Generate bash/zsh/fish completions using clap.
-
 - [ ] **Systemd service unit** - Create systemd service file for auto-start.
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