WIP: Output tool via Arc<Mutex<Subconscious>>, ToolHandler to Arc<dyn Fn>

- ToolHandler changed to Arc<dyn Fn(...)> (supports closures)
- Subconscious wrapped in Arc<Mutex<>> on Mind
- init_output_tool() pushes output tool closure capturing the Arc
- Output removed from static memory_tools()
- Most tool handlers wrapped in Arc::new() but some have paren issues

Co-Authored-By: Proof of Concept <poc@bcachefs.org>

src/mind/mod.rs

@@ -251,7 +251,7 @@ pub struct Mind {
     pub agent: Arc<Agent>,
     pub shared: Arc<SharedMindState>,
     pub config: SessionConfig,
-    subconscious: tokio::sync::Mutex<Subconscious>,
+    subconscious: Arc<tokio::sync::Mutex<Subconscious>>,
     turn_tx: mpsc::Sender<(Result<TurnResult>, StreamTarget)>,
     turn_watch: tokio::sync::watch::Sender<bool>,
     bg_tx: mpsc::UnboundedSender<BgEvent>,
@@ -287,9 +287,11 @@ impl Mind {
         sup.load_config();
         sup.ensure_running();
 
+        let subconscious = Arc::new(tokio::sync::Mutex::new(Subconscious::new()));
+        subconscious.lock().await.init_output_tool(subconscious.clone());
+
         Self { agent, shared, config,
-               subconscious: tokio::sync::Mutex::new(Subconscious::new()),
-               turn_tx, turn_watch, bg_tx,
+               subconscious, turn_tx, turn_watch, bg_tx,
                bg_rx: std::sync::Mutex::new(Some(bg_rx)), _supervisor: sup }
     }