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

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

src/cli/components/InputRich.tsx

@@ -37,6 +37,7 @@ import {
   getSnapshot as getSubagentSnapshot,
   subscribe as subscribeToSubagents,
 } from "../helpers/subagentState.js";
+import { getRandomThinkingTip } from "../helpers/thinkingMessages";
 import { BlinkingSpinner } from "./BlinkingSpinner.js";
 import { colors } from "./colors";
 import { InputAssist } from "./InputAssist";
@@ -527,6 +528,8 @@ const StreamingStatus = memo(function StreamingStatus({
 
   const [shimmerOffset, setShimmerOffset] = useState(-3);
   const [elapsedMs, setElapsedMs] = useState(0);
+  const [tipMessage, setTipMessage] = useState("");
+  const tipInitializedRef = useRef(false);
   const streamStartRef = useRef<number | null>(null);
 
   useEffect(() => {
@@ -578,6 +581,18 @@ const StreamingStatus = memo(function StreamingStatus({
     setElapsedMs(0);
   }, [streaming, visible]);
 
+  useEffect(() => {
+    if (streaming && visible) {
+      if (!tipInitializedRef.current) {
+        setTipMessage(getRandomThinkingTip());
+        tipInitializedRef.current = true;
+      }
+      return;
+    }
+
+    tipInitializedRef.current = false;
+  }, [streaming, visible]);
+
   const estimatedTokens = charsToTokens(tokenCount);
   const totalElapsedMs = elapsedBaseMs + elapsedMs;
   const shouldShowTokenCount =
@@ -650,33 +665,46 @@ const StreamingStatus = memo(function StreamingStatus({
       hintColor(" (") + hintBold("esc") + hintColor(` to interrupt${suffix}`)
     );
   }, [interruptRequested, statusHintSuffix]);
+  const tipLineText = useMemo(() => {
+    return truncateEnd(`⎿  Tip: ${tipMessage}`, statusContentWidth);
+  }, [tipMessage, statusContentWidth]);
 
   if (!streaming || !visible) {
     return null;
   }
 
   return (
-    <Box flexDirection="row" marginBottom={1}>
-      <Box width={2} flexShrink={0}>
-        <Text color={colors.status.processing}>
-          {animate ? <Spinner type="layer" /> : "●"}
-        </Text>
-      </Box>
-      <Box width={statusContentWidth} flexShrink={0} flexDirection="row">
-        <Box width={messageColumnWidth} flexShrink={0}>
-          <ShimmerText
-            boldPrefix={agentName || undefined}
-            message={thinkingMessage}
-            shimmerOffset={animate ? shimmerOffset : -3}
-            wrap="truncate-end"
-          />
+    <Box flexDirection="column" marginBottom={1}>
+      <Box flexDirection="row">
+        <Box width={2} flexShrink={0}>
+          <Text color={colors.status.processing}>
+            {animate ? <Spinner type="layer" /> : "●"}
+          </Text>
         </Box>
-        {hintColumnWidth > 0 && (
-          <Box width={hintColumnWidth} flexShrink={0}>
-            <Text wrap="truncate-end">{statusHintText}</Text>
+        <Box width={statusContentWidth} flexShrink={0} flexDirection="row">
+          <Box width={messageColumnWidth} flexShrink={0}>
+            <ShimmerText
+              boldPrefix={agentName || undefined}
+              message={thinkingMessage}
+              shimmerOffset={animate ? shimmerOffset : -3}
+              wrap="truncate-end"
+            />
           </Box>
-        )}
-        <Box flexGrow={1} />
+          {hintColumnWidth > 0 && (
+            <Box width={hintColumnWidth} flexShrink={0}>
+              <Text wrap="truncate-end">{statusHintText}</Text>
+            </Box>
+          )}
+          <Box flexGrow={1} />
+        </Box>
+      </Box>
+      <Box flexDirection="row">
+        <Box width={2} flexShrink={0} />
+        <Box width={statusContentWidth} flexShrink={0}>
+          <Text color={colors.subagent.hint} wrap="truncate-end">
+            {tipLineText}
+          </Text>
+        </Box>
       </Box>
     </Box>
   );

src/cli/helpers/thinkingMessages.ts

@@ -43,6 +43,14 @@ const THINKING_VERBS = [
   "internalizing",
 ] as const;
 
+export const THINKING_TIPS = [
+  "Use /remember [instructions] to remember something from the conversation.",
+  "Use /palace to inspect your agent's memory palace.",
+  "Use /reflect to launch a background reflection agent to update memory.",
+  "Use /search [query] to search messages across all agents.",
+  "Use /init to initialize (or re-init) your agent's memory.",
+] as const;
+
 type ThinkingVerb = (typeof THINKING_VERBS)[number];
 
 const PAST_TENSE_VERBS: Record<ThinkingVerb, string> = {
@@ -95,6 +103,11 @@ function getRandomVerb(): string {
   return THINKING_VERBS[index] ?? "thinking";
 }
 
+function getRandomTip(): string {
+  const index = Math.floor(Math.random() * THINKING_TIPS.length);
+  return THINKING_TIPS[index] ?? "";
+}
+
 // Get a random thinking verb phrase (e.g., "is thinking", "is processing")
 export function getRandomThinkingVerb(): string {
   return `is ${getRandomVerb()}`;
@@ -117,3 +130,7 @@ export function getRandomThinkingMessage(agentName?: string | null): string {
   // Fallback to capitalized verb if no agent name
   return verb.charAt(0).toUpperCase() + verb.slice(1);
 }
+
+export function getRandomThinkingTip(): string {
+  return getRandomTip();
+}

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);
+  });
 });