feat(cli): add thinking indicator tip bar with memory tips (#1410)

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

src/tests/cli/thinkingMessages.test.ts

@@ -1,5 +1,9 @@
 import { describe, expect, test } from "bun:test";
-import { getRandomThinkingMessage } from "../../cli/helpers/thinkingMessages";
+import {
+  getRandomThinkingMessage,
+  getRandomThinkingTip,
+  THINKING_TIPS,
+} from "../../cli/helpers/thinkingMessages";
 
 describe("Thinking messages", () => {
   test("returns formatted message with agent name", () => {
@@ -43,4 +47,11 @@ describe("Thinking messages", () => {
     // Should have more than 1 unique message (with high probability)
     expect(messages.size).toBeGreaterThan(1);
   });
+
+  test("returns a tip from the configured tip list", () => {
+    const tip = getRandomThinkingTip();
+
+    expect(tip.length).toBeGreaterThan(0);
+    expect((THINKING_TIPS as readonly string[]).includes(tip)).toBe(true);
+  });
 });