Adding some wiring to allow the Ink app to warn if there are local development changes that haven't been captured in the recent build of the Gemini CLI.

packages/cli/src/ui/App.tsx

@@ -1,5 +1,8 @@
 import React, { useState, useEffect } from 'react';
 import { Box, Text } from 'ink';
+import fs from 'fs';
+import path from 'path';
+import os from 'os';
 import type { HistoryItem } from './types.js';
 import { useGeminiStream } from './hooks/useGeminiStream.js';
 import { useLoadingIndicator } from './hooks/useLoadingIndicator.js';
@@ -12,6 +15,8 @@ import Footer from './components/Footer.js';
 import { StreamingState } from '../core/gemini-stream.js';
 import { PartListUnion } from '@google/genai';
 
+const warningsFilePath = path.join(os.tmpdir(), 'gemini-code-cli-warnings.txt');
+
 interface AppProps {
   directory: string;
 }
@@ -19,11 +24,31 @@ interface AppProps {
 const App = ({ directory }: AppProps) => {
   const [query, setQuery] = useState('');
   const [history, setHistory] = useState<HistoryItem[]>([]);
+  const [startupWarnings, setStartupWarnings] = useState<string[]>([]);
   const { streamingState, submitQuery, initError } =
     useGeminiStream(setHistory);
   const { elapsedTime, currentLoadingPhrase } =
     useLoadingIndicator(streamingState);
 
+  useEffect(() => {
+    try {
+      if (fs.existsSync(warningsFilePath)) {
+        console.log('[App] Found warnings file:', warningsFilePath);
+        const warningsContent = fs.readFileSync(warningsFilePath, 'utf-8');
+        setStartupWarnings(warningsContent.split('\n').filter(line => line.trim() !== ''));
+        try {
+            fs.unlinkSync(warningsFilePath);
+        } catch (unlinkErr: any) {
+             console.warn(`[App] Warning: Could not delete warnings file: ${unlinkErr.message}`);
+        }
+      } else {
+         console.log('[App] No warnings file found.');
+      }
+    } catch (err: any) {
+      console.error(`[App] Error checking/reading warnings file: ${err.message}`);
+    }
+  }, []);
+
   const handleInputSubmit = (value: PartListUnion) => {
     submitQuery(value)
       .then(() => {
@@ -63,6 +88,22 @@ const App = ({ directory }: AppProps) => {
     <Box flexDirection="column" padding={1} marginBottom={1} width="100%">
       <Header cwd={directory} />
 
+      {startupWarnings.length > 0 && (
+        <Box
+          borderStyle="round"
+          borderColor="yellow"
+          paddingX={1}
+          marginY={1}
+          flexDirection="column"
+        >
+          {startupWarnings.map((warning, index) => (
+            <Text key={index} color="yellow">
+              {warning}
+            </Text>
+          ))}
+        </Box>
+      )}
+
       <Tips />
 
       {initError &&