Add /link and /unlink commands for managing agent tools (#59)

Co-authored-by: Letta <noreply@letta.com>

src/cli/commands/registry.ts

@@ -50,6 +50,20 @@ export const commands: Record<string, Command> = {
       return "Clearing credentials...";
     },
   },
+  "/link": {
+    desc: "Attach Letta Code tools to current agent",
+    handler: () => {
+      // Handled specially in App.tsx to access agent ID and client
+      return "Attaching tools...";
+    },
+  },
+  "/unlink": {
+    desc: "Remove Letta Code tools from current agent",
+    handler: () => {
+      // Handled specially in App.tsx to access agent ID and client
+      return "Removing tools...";
+    },
+  },
 };
 
 /**