feat: add doctor command

scripts/integration-progress-model.ts

@@ -135,6 +135,7 @@ function summarizeProviderScenarioFlagCoverage(files) {
     ['iosSimulatorDeviceSet', 'iOS simulator-set scoping reaches inventory resolution'],
     ['androidDeviceAllowlist', 'Android serial allowlist reaches inventory resolution'],
     ['session', 'named session routing'],
+    ['targetApp', 'doctor target app discovery without opening a session'],
     ['surface', 'macOS app/frontmost/desktop/menubar surfaces'],
     ['activity', 'Android explicit launch activity'],
     ['launchConsole', 'iOS simulator launch console capture'],
@@ -212,6 +213,7 @@ function summarizeProviderScenarioFlagExclusions() {
         'daemonAuthToken',
         'daemonTransport',
         'daemonServerMode',
+        'remote',
         'tenant',
         'sessionIsolation',
         'runId',

src/__tests__/cli-network.test.ts

@@ -149,6 +149,45 @@ test('test command prints suite summary and exits non-zero on failures', async (
   assert.match(result.stdout, /Test summary: 1 passed \(3\), 1 failed in 0\.025s/);
 });
 
+test('doctor command opts into progress rows for human output', async () => {
+  const result = await runCliCapture(['doctor'], async () => ({
+    ok: true,
+    data: {
+      status: 'pass',
+      summary: 'No blockers found.',
+      checks: [
+        {
+          id: 'agent-device',
+          status: 'pass',
+          summary: 'agent-device 0.17.9 using /tmp/agent-device',
+        },
+      ],
+    },
+  }));
+
+  assert.equal(result.code, null);
+  assert.equal(result.calls.length, 1);
+  assert.equal(result.calls[0]?.command, 'doctor');
+  assert.equal(result.calls[0]?.meta?.requestProgress, 'command');
+  assert.match(result.stdout, /✓ agent-device: agent-device 0\.17\.9 using \/tmp\/agent-device/);
+});
+
+test('doctor command keeps json output non-streaming', async () => {
+  const result = await runCliCapture(['doctor', '--json'], async () => ({
+    ok: true,
+    data: {
+      status: 'pass',
+      summary: 'No blockers found.',
+      checks: [],
+    },
+  }));
+
+  assert.equal(result.code, null);
+  assert.equal(result.calls.length, 1);
+  assert.equal(result.calls[0]?.meta?.requestProgress, undefined);
+  assert.match(result.stdout, /"success": true/);
+});
+
 test('test command --verbose prints all test statuses', async () => {
   const result = await runCliCapture(['test', './suite', '--verbose'], async () =>
     makeReplaySuiteResponse(),

src/__tests__/test-utils/color.ts

@@ -0,0 +1,14 @@
+export function withNoColor<T>(run: () => T): T {
+  const originalForceColor = process.env.FORCE_COLOR;
+  const originalNoColor = process.env.NO_COLOR;
+  delete process.env.FORCE_COLOR;
+  process.env.NO_COLOR = '1';
+  try {
+    return run();
+  } finally {
+    if (typeof originalForceColor === 'string') process.env.FORCE_COLOR = originalForceColor;
+    else delete process.env.FORCE_COLOR;
+    if (typeof originalNoColor === 'string') process.env.NO_COLOR = originalNoColor;
+    else delete process.env.NO_COLOR;
+  }
+}

src/__tests__/test-utils/index.ts

@@ -18,6 +18,8 @@ export {
 
 export { makeSnapshotState } from './snapshot-builders.ts';
 
+export { withNoColor } from './color.ts';
+
 export {
   closeLoopbackServer,
   listenOnLoopback,

src/cli-doctor-output.ts

@@ -0,0 +1,13 @@
+export { formatDoctorCheckDetailLines, formatDoctorCheckSummaryLine } from './doctor-output.ts';
+
+let renderedDoctorProgress = false;
+
+export function markDoctorProgressRendered(): void {
+  renderedDoctorProgress = true;
+}
+
+export function consumeDoctorProgressRendered(): boolean {
+  const rendered = renderedDoctorProgress;
+  renderedDoctorProgress = false;
+  return rendered;
+}

src/cli-status-markers.ts

@@ -0,0 +1,21 @@
+import { colorize, supportsColor } from './utils/output.ts';
+
+export type CliStatusMarkerStatus = 'pass' | 'fail' | 'warn' | 'skip';
+
+export function formatCliStatusMarker(
+  status: CliStatusMarkerStatus,
+  options: { passFormat?: 'green' | 'yellow' } = {},
+): string {
+  const useColor = supportsColor(process.stderr);
+  if (status === 'pass') {
+    const format = options.passFormat ?? 'green';
+    return useColor ? colorizeStatusMarker('✓', format) : '✓';
+  }
+  if (status === 'fail') return useColor ? colorizeStatusMarker('⨯', 'red') : '⨯';
+  if (status === 'warn') return useColor ? colorizeStatusMarker('!', 'yellow') : '!';
+  return useColor ? colorizeStatusMarker('-', 'dim') : '-';
+}
+
+function colorizeStatusMarker(text: string, format: Parameters<typeof colorize>[1]): string {
+  return colorize(text, format, { validateStream: false });
+}

src/cli/parser/cli-flags.ts

@@ -65,7 +65,9 @@ export type CliFlags = RemoteConfigMetroOptions &
     iosXctestEnvDir?: string;
     deviceHub?: boolean;
     androidDeviceAllowlist?: string;
+    remote?: boolean;
     session?: string;
+    targetApp?: string;
     metroHost?: string;
     metroPort?: number;
     bundleUrl?: string;
@@ -401,6 +403,13 @@ const FLAG_DEFINITIONS: readonly FlagDefinition[] = [
     usageLabel: '--headless',
     usageDescription: 'Boot: launch Android emulator without a GUI window',
   },
+  {
+    key: 'targetApp',
+    names: ['--app', '--target-app'],
+    type: 'string',
+    usageLabel: '--app <id-or-name>',
+    usageDescription: 'Doctor: verify an installed target app without opening a session',
+  },
   {
     key: 'metroHost',
     names: ['--metro-host'],
@@ -586,6 +595,13 @@ const FLAG_DEFINITIONS: readonly FlagDefinition[] = [
     usageLabel: '--android-device-allowlist <serials>',
     usageDescription: 'Comma/space separated Android serial allowlist for discovery/selection',
   },
+  {
+    key: 'remote',
+    names: ['--remote'],
+    type: 'boolean',
+    usageLabel: '--remote',
+    usageDescription: 'Doctor: check remote connection setup instead of local device inventory',
+  },
   {
     key: 'activity',
     names: ['--activity'],

src/cli/parser/cli-help.ts

@@ -552,6 +552,11 @@ Choose the next help topic:
   Remote/cloud config, leases, and local service tunnels: help remote.
 
 React Native dev loop:
+  Before QA/dogfood runs, use doctor to separate environment setup from app failures:
+    agent-device doctor --platform android
+    agent-device doctor --platform ios
+    agent-device doctor --platform android --app com.example.app
+    agent-device doctor --remote --remote-config ./remote.json
   For "start from screen X" flows, prefer open --relaunch before the first snapshot so the app does not reuse a prior in-progress navigation state.
   JS-only change with Metro connected:
     agent-device metro reload

src/client/client-types.ts

@@ -482,6 +482,11 @@ export type PrepareCommandOptions = DeviceCommandBaseOptions & {
   timeoutMs?: number;
 };
 
+export type DoctorCommandOptions = DeviceCommandBaseOptions & {
+  targetApp?: string;
+  remote?: boolean;
+};
+
 export type ViewportCommandOptions = DeviceCommandBaseOptions & {
   width: number;
   height: number;
@@ -498,6 +503,7 @@ export type AgentDeviceCommandClient = {
   keyboard: (options?: KeyboardCommandOptions) => Promise<CommandResult<'keyboard'>>;
   clipboard: (options: ClipboardCommandOptions) => Promise<CommandResult<'clipboard'>>;
   reactNative: (options: ReactNativeCommandOptions) => Promise<CommandRequestResult>;
+  doctor: (options?: DoctorCommandOptions) => Promise<CommandRequestResult>;
   prepare: (options: PrepareCommandOptions) => Promise<CommandRequestResult>;
   viewport: (options: ViewportCommandOptions) => Promise<CommandResult<'viewport'>>;
 };

src/client/client.ts

@@ -122,6 +122,7 @@ export function createAgentDeviceClient(
       clipboard: async (options) =>
         await executeCommand<CommandResult<'clipboard'>>('clipboard', options),
       reactNative: async (options) => await executeCommand('react-native', options),
+      doctor: async (options = {}) => await executeCommand('doctor', options),
       prepare: async (options) => await executeCommand('prepare', options),
       viewport: async (options) =>
         await executeCommand<CommandResult<'viewport'>>('viewport', options),

src/command-catalog.ts

@@ -10,6 +10,7 @@ export const PUBLIC_COMMANDS = {
   close: 'close',
   clipboard: 'clipboard',
   devices: 'devices',
+  doctor: 'doctor',
   diff: 'diff',
   fill: 'fill',
   find: 'find',
@@ -116,6 +117,7 @@ const CAPABILITY_EXEMPT_CLI_COMMANDS = commandSet(
   PUBLIC_COMMANDS.prepare,
   PUBLIC_COMMANDS.batch,
   PUBLIC_COMMANDS.devices,
+  PUBLIC_COMMANDS.doctor,
   PUBLIC_COMMANDS.gesture,
   PUBLIC_COMMANDS.replay,
   PUBLIC_COMMANDS.test,

src/commands/management/doctor.ts

@@ -0,0 +1,53 @@
+import { PUBLIC_COMMANDS } from '../../command-catalog.ts';
+import type { CommandSchemaOverride } from '../../utils/cli-command-schema-types.ts';
+import * as commandInput from '../command-input.ts';
+import { defineExecutableCommand } from '../command-contract.ts';
+import { commonInputFromFlags, direct } from '../cli-grammar/common.ts';
+import type { CliReader, DaemonWriter } from '../cli-grammar/types.ts';
+import { defineCommandFacet } from '../family/types.ts';
+import { defineFieldCommandMetadata } from '../field-command-contract.ts';
+import { managementCliOutputFormatters } from './output.ts';
+
+const doctorCommandMetadata = defineFieldCommandMetadata(
+  'doctor',
+  'Diagnose device, app, Metro, and React Native readiness before a run.',
+  {
+    targetApp: commandInput.stringField(
+      'Installed app package/bundle id or app name to verify without opening a session.',
+    ),
+    remote: commandInput.booleanField(
+      'Check remote connection setup instead of local device inventory.',
+    ),
+  },
+);
+
+const doctorCommandDefinition = defineExecutableCommand(doctorCommandMetadata, (client, input) =>
+  client.command.doctor(input),
+);
+
+const doctorCliSchema = {
+  usageOverride:
+    'doctor [--platform ios|android|macos|linux|web|apple] [--app <id-or-name>] [--remote]',
+  helpDescription:
+    'Read-only preflight for QA and dogfood runs. Reports local device inventory, active sessions, optional app discovery, scoped toolchain info, and Metro reachability inferred from cwd/runtime. Pass --app to verify a target app on the one matching booted device without opening a session. Use --remote to check remote connection setup without probing local devices. Default output is compact; use --json for full checks and evidence.',
+  summary: 'Preflight device, app, Metro, and RN/Expo readiness',
+  allowedFlags: ['targetApp', 'remote'],
+} as const satisfies CommandSchemaOverride;
+
+const doctorCliReader: CliReader = (_positionals, flags) => ({
+  ...commonInputFromFlags(flags),
+  targetApp: flags.targetApp,
+  remote: flags.remote,
+});
+
+const doctorDaemonWriter: DaemonWriter = direct(PUBLIC_COMMANDS.doctor);
+
+export const doctorCommandFacet = defineCommandFacet({
+  name: 'doctor',
+  metadata: doctorCommandMetadata,
+  definition: doctorCommandDefinition,
+  cliSchema: doctorCliSchema,
+  cliReader: doctorCliReader,
+  daemonWriter: doctorDaemonWriter,
+  cliOutputFormatter: managementCliOutputFormatters.doctor,
+});

src/commands/management/index.ts

@@ -1,6 +1,7 @@
 import { defineCommandFamilyFromFacets } from '../family/types.ts';
 import { appsCommandFacet, closeCommandFacet, openCommandFacet } from './app.ts';
 import { deviceManagementCommandFacets } from './device.ts';
+import { doctorCommandFacet } from './doctor.ts';
 import { installManagementCommandFacets } from './install.ts';
 import { prepareCommandFacet } from './prepare.ts';
 import { pushManagementCommandFacets } from './push.ts';
@@ -11,6 +12,7 @@ export const managementCommandFamily = defineCommandFamilyFromFacets({
   name: 'management',
   commands: [
     ...deviceManagementCommandFacets,
+    doctorCommandFacet,
     prepareCommandFacet,
     appsCommandFacet,
     sessionCommandFacet,

src/commands/management/output.test.ts

@@ -1,5 +1,7 @@
 import { describe, expect, test } from 'vitest';
-import { openCliOutput } from './output.ts';
+import { doctorCliOutput, openCliOutput } from './output.ts';
+import { markDoctorProgressRendered } from '../../cli-doctor-output.ts';
+import { withNoColor } from '../../__tests__/test-utils/index.ts';
 
 describe('openCliOutput', () => {
   test('prints session state directory on a second line', () => {
@@ -18,3 +20,91 @@ describe('openCliOutput', () => {
     });
   });
 });
+
+describe('doctorCliOutput', () => {
+  test('prints passing checks by default using test-style status markers', () => {
+    const output = withNoColor(() =>
+      doctorCliOutput({
+        status: 'pass',
+        summary: 'No blockers found.',
+        checks: [
+          {
+            id: 'agent-device',
+            status: 'pass',
+            summary: 'agent-device 0.17.9 using /tmp/agent-device',
+          },
+          {
+            id: 'device',
+            status: 'pass',
+            summary: 'Selected Pixel (android)',
+          },
+          {
+            id: 'session',
+            status: 'info',
+            summary: 'No active session named default. Doctor will use the selected device.',
+          },
+        ],
+      }),
+    );
+
+    expect(output.text).toBe(
+      [
+        'Doctor: pass',
+        '✓ agent-device: agent-device 0.17.9 using /tmp/agent-device',
+        '✓ device: Selected Pixel (android)',
+        '- session: No active session named default. Doctor will use the selected device.',
+      ].join('\n'),
+    );
+  });
+
+  test('keeps warning and failure recovery details under the relevant row', () => {
+    const output = withNoColor(() =>
+      doctorCliOutput({
+        status: 'fail',
+        checks: [
+          {
+            id: 'device',
+            status: 'fail',
+            summary: 'No devices found.',
+            command: 'agent-device devices',
+          },
+          {
+            id: 'android-reverse',
+            status: 'warn',
+            summary: 'Android adb reverse is missing for Metro port 8081.',
+            command: 'adb -s emulator-5554 reverse tcp:8081 tcp:8081',
+          },
+        ],
+      }),
+    );
+
+    expect(output.text).toBe(
+      [
+        'Doctor: fail',
+        '⨯ device: No devices found.',
+        '  run: agent-device devices',
+        '! android-reverse: Android adb reverse is missing for Metro port 8081.',
+        '  run: adb -s emulator-5554 reverse tcp:8081 tcp:8081',
+      ].join('\n'),
+    );
+  });
+
+  test('prints only the summary after streamed progress rendered the checks', () => {
+    const output = withNoColor(() => {
+      markDoctorProgressRendered();
+      return doctorCliOutput({
+        status: 'pass',
+        summary: 'No blockers found.',
+        checks: [
+          {
+            id: 'device',
+            status: 'pass',
+            summary: 'Selected Pixel (android)',
+          },
+        ],
+      });
+    });
+
+    expect(output.text).toBe(['Doctor: pass', 'No blockers found.'].join('\n'));
+  });
+});