enable async tool discovery by making the registry accessor async; remove call to discoverTools that caused duplicate discovery (#691)

packages/cli/src/nonInteractiveCli.test.ts

@@ -42,7 +42,6 @@ describe('runNonInteractive', () => {
       startChat: vi.fn().mockResolvedValue(mockChat),
     } as unknown as GeminiClient;
     mockToolRegistry = {
-      discoverTools: vi.fn().mockResolvedValue(undefined),
       getFunctionDeclarations: vi.fn().mockReturnValue([]),
       getTool: vi.fn(),
     } as unknown as ToolRegistry;
@@ -82,7 +81,6 @@ describe('runNonInteractive', () => {
     await runNonInteractive(mockConfig, 'Test input');
 
     expect(mockGeminiClient.startChat).toHaveBeenCalled();
-    expect(mockToolRegistry.discoverTools).toHaveBeenCalled();
     expect(mockChat.sendMessageStream).toHaveBeenCalledWith({
       message: [{ text: 'Test input' }],
       config: {

packages/cli/src/nonInteractiveCli.ts

@@ -40,8 +40,7 @@ export async function runNonInteractive(
   input: string,
 ): Promise<void> {
   const geminiClient = new GeminiClient(config);
-  const toolRegistry: ToolRegistry = config.getToolRegistry();
-  await toolRegistry.discoverTools();
+  const toolRegistry: ToolRegistry = await config.getToolRegistry();
 
   const chat = await geminiClient.startChat();
   const abortController = new AbortController();

packages/cli/src/ui/hooks/atCommandProcessor.ts

@@ -138,7 +138,7 @@ export async function handleAtCommand({
   const atPathToResolvedSpecMap = new Map<string, string>();
   const contentLabelsForDisplay: string[] = [];
 
-  const toolRegistry = config.getToolRegistry();
+  const toolRegistry = await config.getToolRegistry();
   const readManyFilesTool = toolRegistry.getTool('read_many_files');
   const globTool = toolRegistry.getTool('glob');