Tray options implementation + Voice system rewrite + build fixes

crates/jarvis-core/src/ipc/events.rs

@@ -30,6 +30,9 @@ pub enum IpcEvent {
     
     // Pong response
     Pong,
+
+    // request GUI to reveal/focus window
+    RevealWindow,
 }
 
 // Actions sent from GUI to jarvis-app
@@ -47,4 +50,7 @@ pub enum IpcAction {
     
     // Mute/unmute listening
     SetMuted { muted: bool },
+
+    // Execute text command
+    TextCommand { text: String },
 }

crates/jarvis-core/src/ipc/server.rs

@@ -187,4 +187,12 @@ async fn handle_client(
     }
 
     info!("IPC: Client disconnected: {}", peer_addr);
+}
+
+pub fn has_clients() -> bool {
+    if let Some(tx) = BROADCAST_TX.get() {
+        tx.receiver_count() > 0
+    } else {
+        false
+    }
 }