sync: update from private repo (c764df2f)

src/engine/tools/web.test.ts

@@ -53,6 +53,14 @@ describe('sanitizeQuery', () => {
   it('preserves public IPs', () => {
     expect(sanitizeQuery('query 8.8.8.8 dns', {})).toBe('query 8.8.8.8 dns');
   });
+  it('returns null for missing / non-string query instead of throwing', () => {
+    // 退行したモデルが query なしの WebSearch を吐くと undefined が渡ってくる
+    expect(sanitizeQuery(undefined as unknown as string, {})).toBeNull();
+    expect(sanitizeQuery(null as unknown as string, {})).toBeNull();
+    expect(sanitizeQuery(123 as unknown as string, {})).toBeNull();
+    expect(sanitizeQuery('', {})).toBeNull();
+    expect(sanitizeQuery('   ', {})).toBeNull();
+  });
 });
 
 describe('web tools', () => {
@@ -148,6 +156,17 @@ describe('web tools', () => {
     expect(fs.existsSync(path.join(workspacePath, 'logs', 'webfetch-screenshots'))).toBe(false);
   });
 
+  it('returns a friendly error (not a crash) when WebSearch query is missing', async () => {
+    workspacePath = makeWorkspace();
+
+    // 引数欠落のツール呼び出し（退行モデル由来）でジョブ全体を巻き添えにしない
+    const result = await executeTool('WebSearch', {}, makeContext(workspacePath));
+
+    expect(result).not.toBeNull();
+    expect(result?.isError).toBe(true);
+    expect(result?.output).toContain('query');
+  });
+
   it('records invalid URL attempts before fetch', async () => {
     workspacePath = makeWorkspace();