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

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

src/cli/components/WelcomeScreen.tsx

@@ -9,6 +9,8 @@ import { colors } from "./colors";
 type LoadingState =
   | "assembling"
   | "upserting"
+  | "linking"
+  | "unlinking"
   | "initializing"
   | "checking"
   | "ready";
@@ -82,6 +84,12 @@ export function WelcomeScreen({
     if (loadingState === "upserting") {
       return "Upserting tools...";
     }
+    if (loadingState === "linking") {
+      return "Attaching Letta Code tools...";
+    }
+    if (loadingState === "unlinking") {
+      return "Removing Letta Code tools...";
+    }
     if (loadingState === "checking") {
       return "Checking for pending approvals...";
     }