Add desktop notifications for track changes, queue end, and errors

Uses notify-rust to send D-Bus desktop notifications from the daemon
when tracks change, the queue empties, or audio errors occur.

1 files changed, 2 insertions, 1 deletions

diff --git a/AGENTS.md b/AGENTS.md
index 6782574..4ec9a5a 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -32,6 +32,7 @@ Run these before completing any task:
   - Pause/resume uses cpal stream `pause()`/`play()` methods
 - **Scrobbling changes**: Update Last.fm/ListenBrainz client implementation
 - **Config/Settings changes**: Update config schema, `rsp settings` subcommands, and scan interval/auto-scan logic
+- **Notification changes**: Update `notify-rust` dependency in Cargo.toml if needed; notification functions are in `src/notification.rs`; notification call sites are in `src/daemon.rs` (track events) and `src/audio.rs` (error events)
 
 ## Completed Features
 - [x] Unix socket daemon IPC
@@ -49,9 +50,9 @@ Run these before completing any task:
 - [x] `rsp settings` subcommands (get/set/list/unset)
 - [x] Shell completions (`rsp completions bash|zsh|fish|powershell|elvish`)
 - [x] Unit tests for Player, Track, and ShuffleMode
+- [x] Desktop notifications for track changes, queue end, and errors
 
 ## Remaining Work
 - Queue state persistence to disk
 - Album shuffle mode with proper album/folder grouping
 - Scrobbling (Last.fm/ListenBrainz)
-- Systemd service unit
\ No newline at end of file