Correctly support comma-separated values for --allowed-tools (#8386)

Co-authored-by: anthony bushong <agmsb@users.noreply.github.com>

packages/cli/src/config/config.test.ts

@@ -296,6 +296,17 @@ describe('parseArguments', () => {
     mockExit.mockRestore();
     mockConsoleError.mockRestore();
   });
+
+  it('should support comma-separated values for --allowed-tools', async () => {
+    process.argv = [
+      'node',
+      'script.js',
+      '--allowed-tools',
+      'read_file,ShellTool(git status)',
+    ];
+    const argv = await parseArguments({} as Settings);
+    expect(argv.allowedTools).toEqual(['read_file', 'ShellTool(git status)']);
+  });
 });
 
 describe('loadCliConfig', () => {

packages/cli/src/config/config.ts

@@ -233,6 +233,9 @@ export async function parseArguments(settings: Settings): Promise<CliArgs> {
           type: 'array',
           string: true,
           description: 'Tools that are allowed to run without confirmation',
+          coerce: (tools: string[]) =>
+            // Handle comma-separated values
+            tools.flatMap((tool) => tool.split(',').map((t) => t.trim())),
         })
         .option('extensions', {
           alias: 'e',