fix(simulator-runtime): forward launch args to log capture

Allow launch_app_logs_sim to pass args through startLogCapture and ensure the log capture helper includes them in the underlying simctl launch.

Author: cameroncooke

src/mcp/tools/simulator/__tests__/launch_app_logs_sim.test.ts

@@ -132,6 +132,7 @@ describe('launch_app_logs_sim tool', () => {
         simulatorUuid: 'test-uuid-123',
         bundleId: 'com.example.testapp',
         captureConsole: true,
+        args: ['--debug'],
       });
     });
 

src/mcp/tools/simulator/launch_app_logs_sim.ts

@@ -11,6 +11,7 @@ export type LogCaptureFunction = (
     simulatorUuid: string;
     bundleId: string;
     captureConsole?: boolean;
+    args?: string[];
   },
   executor: CommandExecutor,
 ) => Promise<{ sessionId: string; logFilePath: string; processes: unknown[]; error?: string }>;
@@ -36,14 +37,14 @@ export async function launch_app_logs_simLogic(
 ): Promise<ToolResponse> {
   log('info', `Starting app launch with logs for simulator ${params.simulatorId}`);
 
-  const { sessionId, error } = await logCaptureFunction(
-    {
-      simulatorUuid: params.simulatorId,
-      bundleId: params.bundleId,
-      captureConsole: true,
-    },
-    executor,
-  );
+  const captureParams = {
+    simulatorUuid: params.simulatorId,
+    bundleId: params.bundleId,
+    captureConsole: true,
+    ...(params.args && params.args.length > 0 ? { args: params.args } : {}),
+  } as const;
+
+  const { sessionId, error } = await logCaptureFunction(captureParams, executor);
   if (error) {
     return {
       content: [createTextContent(`App was launched but log capture failed: ${error}`)],

src/utils/log_capture.ts

@@ -32,13 +32,14 @@ export async function startLogCapture(
     simulatorUuid: string;
     bundleId: string;
     captureConsole?: boolean;
+    args?: string[];
   },
   executor: CommandExecutor = getDefaultCommandExecutor(),
 ): Promise<{ sessionId: string; logFilePath: string; processes: ChildProcess[]; error?: string }> {
   // Clean up old logs before starting a new session
   await cleanOldLogs();
 
-  const { simulatorUuid, bundleId, captureConsole = false } = params;
+  const { simulatorUuid, bundleId, captureConsole = false, args = [] } = params;
   const logSessionId = uuidv4();
   const logFileName = `${LOG_FILE_PREFIX}${logSessionId}.log`;
   const logFilePath = path.join(os.tmpdir(), logFileName);
@@ -51,16 +52,21 @@ export async function startLogCapture(
     logStream.write('\n--- Log capture for bundle ID: ' + bundleId + ' ---\n');
 
     if (captureConsole) {
+      const launchCommand = [
+        'xcrun',
+        'simctl',
+        'launch',
+        '--console-pty',
+        '--terminate-running-process',
+        simulatorUuid,
+        bundleId,
+      ];
+      if (args.length > 0) {
+        launchCommand.push(...args);
+      }
+
       const stdoutLogResult = await executor(
-        [
-          'xcrun',
-          'simctl',
-          'launch',
-          '--console-pty',
-          '--terminate-running-process',
-          simulatorUuid,
-          bundleId,
-        ],
+        launchCommand,
         'Console Log Capture',
         true, // useShell
         undefined, // env