Pin the desktop notification app-name to crabidy

notify-rust defaults the app-name to the executable file name
(cbd-tui), so notification-daemon rules keyed on app-name break
whenever the binary is renamed or wrapped. Set it explicitly.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

cbd-tui/src/app/now_playing.rs

@@ -57,7 +57,11 @@ impl NowPlaying {
                 format!("{} by {}", track.title, track.artist,)
             };
             // A missing notification daemon must not crash the TUI.
+            // The explicit appname keeps notification-daemon rules
+            // (e.g. mako `app-name=` criteria) stable even if the
+            // binary is renamed or wrapped.
             if let Err(err) = Notification::new()
+                .appname("crabidy")
                 .summary("Now playing")
                 .body(&body)
                 .show()