fix: subscription event loop, session_id for reconnect, audio feature gate

- Fix event_rx consumed by take() - now locks and polls each time
- Add session_id to restart subscription on reconnect
- Remove duplicate code in Connect handler
- Gate audio behind optional cpal feature (needs ALSA dev libs)
- tsclientlib audio feature disabled in workspace (needs cmake)
- 69 tests passing, clippy clean

src/iced-app/Cargo.toml

@@ -18,6 +18,7 @@ serde_json = { workspace = true }
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true }
 chrono = { workspace = true }
+cpal = { version = "0.15", optional = true }
 
 shared = { workspace = true }
 tscore = { workspace = true }
@@ -27,3 +28,4 @@ tsproto-packets = { workspace = true }
 
 [features]
 default = []
+audio = ["dep:cpal"]