.claude/context/architecture.md

@@ -57,8 +57,8 @@ new provider instance):
   saved-accounts list, which one is active, `sessionGeneration` — see
   below), auth/login-flow state (`isLoggedIn`, `isRestoringSession`,
   `loginFlowStatus`), the active `NextcloudService` instance, and login lock
-  (`loginLockEnabled`/`lockAccountSwitching`/`lockHiddenFiles`/
-  `needsUnlock`/`passGate`). Exposes `addAccountClearedListener`/
+  (`loginLockEnabled`/`lockAccountSwitching`/`lockHiddenFiles` - three
+  independent locks - plus `needsUnlock`/`passGate`). Exposes `addAccountClearedListener`/
   `addAccountActivatedListener` (plain `List<VoidCallback>`) so sibling
   controllers — constructed after `SessionController` and unable to hold a
   forward reference to it — can react to login/logout/account-switch

.claude/context/server.md

@@ -798,6 +798,19 @@ plugin's own manifest via merge, but kept explicit here too).
 own requirement) via `maxOf(24, flutter.minSdkVersion)` rather than trusting
 Flutter's own default to already be high enough.
 
+**The three locks are independent** (Settings -> Security;
+`SessionController`): `loginLockEnabled` (unlock to open the app - the only one
+`needsUnlock`/the lock screen look at), `lockAccountSwitching` (unlock to
+switch accounts) and `lockHiddenFiles` (unlock to turn on showing hidden
+files). Each gate works with the others off - `passGate(gate, reason)`
+prompts whenever its own `gate` is on, whether or not login lock is. Turning
+any of them on **or off** needs a successful `AppLockService.authenticate`
+(on also needs `isDeviceSupported`, so a gate nobody can pass can't be set;
+off needs it so someone with a momentarily unlocked phone can't remove it),
+and `disableLoginLock` leaves the other two untouched. The old master/sub-toggle
+dependency is gone. Tests replace the prompt through
+`AppLockService.debugAuthenticate`/`debugIsDeviceSupported`.
+
 `isRestoringSession` still gates the splash screen until the above resolves
 — see `standards.md` for why widget tests must mock both storage channels
 rather than relying on this async path throwing naturally.
@@ -903,16 +916,16 @@ Reminders/Notes - the destination is picked *inside* the sheet:
      setting of their own. `hide` (default) drops dot-folders, `only` lists
      just them, `include` lists everything; a folder is hidden when it *or
      any ancestor* starts with a dot (`HiddenFilter`, same rule as the app).
-     When the filter isn't `hide` and the app has login lock + "lock hidden
-     files" on, the sheet asks for Face ID/passcode first (`DeviceAuth`, the
+     When the filter isn't `hide` and the app's "lock hidden files" is on,
+     the sheet asks for Face ID/passcode first (`DeviceAuth`, the
      `.deviceOwnerAuthentication` policy - biometrics with passcode fallback,
      like `local_auth` with `biometricOnly: false`); cancelling falls back to
      hiding them, with a note.
    - **Account switching**: choosing any account other than the app's
-     active one asks for the same unlock when login lock + "lock account
-     switching" are on. One successful unlock covers the rest of that sheet.
+     active one asks for the same unlock when "lock account switching" is on. One successful unlock covers the rest of that sheet.
    - Opening the sheet itself is not gated - only these two actions are
-     (as in the app, where login lock guards launch and these toggles).
+     (as in the app, where login lock guards launch and these are separate
+     locks).
 3. **Upload** calls `ShareUpload.enqueue`: one `PUT` per file on a *background*
    `URLSession` (`dev.ayushya.noo.transfers.share`, with
    `sharedContainerIdentifier`) that outlives the extension, and posts

ios/RunnerTests/RunnerTests.swift

@@ -204,18 +204,17 @@ class RunnerTests: XCTestCase {
     XCTAssertEqual(shared.active?.id, "alice")
   }
 
-  func testUnlockRulesNeedTheMasterLockAndTheirOwnToggle() {
+  func testUnlockRulesAreIndependentOfLoginLock() {
     func rules(master: Bool, switching: Bool, hidden: Bool) -> (Bool, Bool) {
       let shared = SharedAccounts(
         accounts: [account("a")], activeId: "a",
         loginLockEnabled: master, lockAccountSwitching: switching, lockHiddenFiles: hidden)
       return (shared.needsUnlockToSwitchAccount, shared.needsUnlockForHidden)
     }
-    XCTAssertTrue(rules(master: true, switching: true, hidden: false) == (true, false))
-    XCTAssertTrue(rules(master: true, switching: false, hidden: true) == (false, true))
-    XCTAssertTrue(
-      rules(master: false, switching: true, hidden: true) == (false, false),
-      "the sub-toggles mean nothing while the login lock is off, as in the app")
+    XCTAssertTrue(rules(master: false, switching: true, hidden: false) == (true, false))
+    XCTAssertTrue(rules(master: false, switching: false, hidden: true) == (false, true))
+    XCTAssertTrue(rules(master: true, switching: false, hidden: false) == (false, false))
+    XCTAssertTrue(rules(master: true, switching: true, hidden: true) == (true, true))
   }
 
   // MARK: - TransferBatchStore

ios/Shared/SharedAccount.swift

@@ -23,8 +23,9 @@ struct SharedAccount: Codable, Equatable, Identifiable {
 struct SharedAccounts: Codable, Equatable {
   var accounts: [SharedAccount]
   var activeId: String?
-  /// Settings -> Security: the master "login lock" and its two sub-toggles.
-  /// The sub-toggles only count while the master one is on (as in the app).
+  /// Settings -> Security: the three independent locks. `loginLockEnabled`
+  /// (unlock to open the app) is carried for completeness; the extension's own
+  /// gates are the other two.
   var loginLockEnabled: Bool
   var lockAccountSwitching: Bool
   var lockHiddenFiles: Bool
@@ -36,11 +37,11 @@ struct SharedAccounts: Codable, Equatable {
 
   /// Uploading to an account other than the active one is "switching" in
   /// the app's terms, so it needs the same unlock.
-  var needsUnlockToSwitchAccount: Bool { loginLockEnabled && lockAccountSwitching }
+  var needsUnlockToSwitchAccount: Bool { lockAccountSwitching }
 
   /// Showing hidden folders needs the same unlock the app asks for when you
   /// turn hidden files on.
-  var needsUnlockForHidden: Bool { loginLockEnabled && lockHiddenFiles }
+  var needsUnlockForHidden: Bool { lockHiddenFiles }
 }
 
 /// Keeps the [SharedAccounts] in a Keychain access group both the app and the

lib/providers/session_controller.dart

@@ -516,7 +516,7 @@ class SessionController extends ChangeNotifier with WidgetsBindingObserver {
   /// session-restore that failed, e.g. transient network trouble at cold
   /// start), this still retries rather than no-op, since that's exactly the
   /// case LoginView's "Continue as" tile exists to recover from. Gated
-  /// behind login lock when [lockAccountSwitching] is on. Returns whether
+  /// behind its own unlock when [lockAccountSwitching] is on. Returns whether
   /// the account ended up logged in, so callers (LoginView's saved-account
   /// tile) can surface a failure - e.g. a stored app password that no
   /// longer works and needs the account removed/re-added.
@@ -640,10 +640,10 @@ class SessionController extends ChangeNotifier with WidgetsBindingObserver {
     return true;
   }
 
-  /// Turns login lock off, along with both of its sub-toggles (meaningless
-  /// once the base lock is gone). Requires a successful auth first, same as
-  /// turning it on - otherwise anyone with momentary access to an unlocked
-  /// phone could just switch it off.
+  /// Turns login lock off. Requires a successful auth first, same as turning
+  /// it on - otherwise anyone with momentary access to an unlocked phone
+  /// could just switch it off. Only this lock: the account-switching and
+  /// hidden-files locks are independent and stay as they are.
   Future<bool> disableLoginLock() async {
     if (!_loginLockEnabled) return true;
     final confirmed = await AppLockService.authenticate(
@@ -651,30 +651,55 @@ class SessionController extends ChangeNotifier with WidgetsBindingObserver {
     );
     if (!confirmed) return false;
     _loginLockEnabled = false;
-    _lockAccountSwitching = false;
-    _lockHiddenFiles = false;
     _isUnlocked = false;
     notifyListeners();
-    prefsFuture.then((p) {
-      p.setBool(_prefLoginLockEnabled, false);
-      p.setBool(_prefLockAccountSwitching, false);
-      p.setBool(_prefLockHiddenFiles, false);
-    });
+    prefsFuture.then((p) => p.setBool(_prefLoginLockEnabled, false));
     return true;
   }
 
-  void setLockAccountSwitching(bool value) {
-    if (!_loginLockEnabled) return;
+  /// Turns the "unlock to switch accounts" gate on or off. Independent of
+  /// login lock. Both directions need a successful auth - enabling proves the
+  /// device can authenticate at all (a gate nobody can pass would lock the
+  /// user out of switching), disabling stops anyone with momentary access to
+  /// an unlocked phone from just removing it. Returns whether it changed.
+  Future<bool> setLockAccountSwitching(bool value) async {
+    if (value == _lockAccountSwitching) return true;
+    if (!await _confirmLockChange(
+      value,
+      'Confirm to lock account switching',
+      'Confirm to unlock account switching',
+    )) {
+      return false;
+    }
     _lockAccountSwitching = value;
     notifyListeners();
     prefsFuture.then((p) => p.setBool(_prefLockAccountSwitching, value));
+    return true;
   }
 
-  void setLockHiddenFiles(bool value) {
-    if (!_loginLockEnabled) return;
+  /// Same as [setLockAccountSwitching], for revealing hidden files.
+  Future<bool> setLockHiddenFiles(bool value) async {
+    if (value == _lockHiddenFiles) return true;
+    if (!await _confirmLockChange(
+      value,
+      'Confirm to lock hidden files',
+      'Confirm to unlock hidden files',
+    )) {
+      return false;
+    }
     _lockHiddenFiles = value;
     notifyListeners();
     prefsFuture.then((p) => p.setBool(_prefLockHiddenFiles, value));
+    return true;
+  }
+
+  Future<bool> _confirmLockChange(
+    bool enabling,
+    String enableReason,
+    String disableReason,
+  ) async {
+    if (enabling && !await AppLockService.isDeviceSupported()) return false;
+    return AppLockService.authenticate(enabling ? enableReason : disableReason);
   }
 
   /// Called by the lock screen. Returns whether it actually unlocked.
@@ -687,12 +712,12 @@ class SessionController extends ChangeNotifier with WidgetsBindingObserver {
     return success;
   }
 
-  /// Prompts for auth if [gate] is on and login lock is configured;
-  /// returns true immediately (no prompt) otherwise. Shared by the
-  /// account-switching gate above and [FilesController]'s/`PhotosController`'s
-  /// hidden-files gates.
+  /// Prompts for auth if [gate] is on; returns true immediately (no prompt)
+  /// otherwise. Each gate stands on its own - it doesn't depend on login lock
+  /// being on. Shared by the account-switching gate above and
+  /// [FilesController]'s/`PhotosController`'s hidden-files gates.
   Future<bool> passGate(bool gate, String reason) async {
-    if (!_loginLockEnabled || !gate) return true;
+    if (!gate) return true;
     return AppLockService.authenticate(reason);
   }
 

lib/services/app_lock_service.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:local_auth/local_auth.dart';
 
 /// Thin wrapper around `local_auth`. Deliberately doesn't implement its own
@@ -8,9 +9,17 @@ import 'package:local_auth/local_auth.dart';
 class AppLockService {
   static final LocalAuthentication _auth = LocalAuthentication();
 
+  /// Replace the platform prompt in tests (null = the real one).
+  @visibleForTesting
+  static Future<bool> Function(String reason)? debugAuthenticate;
+
+  @visibleForTesting
+  static Future<bool> Function()? debugIsDeviceSupported;
+
   /// Whether this device can do *some* form of local auth - biometric
   /// enrolled, or at minimum a device PIN/pattern/password set up.
   static Future<bool> isDeviceSupported() async {
+    if (debugIsDeviceSupported != null) return debugIsDeviceSupported!();
     try {
       final canCheckBiometrics = await _auth.canCheckBiometrics;
       if (canCheckBiometrics) return true;
@@ -24,6 +33,7 @@ class AppLockService {
   /// throws) on cancellation, failure, or any platform error, so callers
   /// can treat every non-true result the same way: stay locked/blocked.
   static Future<bool> authenticate(String reason) async {
+    if (debugAuthenticate != null) return debugAuthenticate!(reason);
     try {
       return await _auth.authenticate(
         localizedReason: reason,

lib/widgets/avatar_menu.dart

@@ -332,7 +332,6 @@ class _OtherAccountRow extends StatelessWidget {
             ),
             const SizedBox(width: 12),
             NooAvatar(initials: accountInitial(name), current: false, size: 40),
-            const SizedBox(width: 44),
           ],
         ),
       ),

lib/widgets/settings/settings_security.dart

@@ -26,26 +26,28 @@ String biometricLabel(TargetPlatform platform) {
   }
 }
 
-/// Settings section 3: login lock, which gates opening the app, switching
-/// accounts, and revealing hidden files behind the device's own PIN/
+/// Settings section 3: three independent locks - opening the app, switching
+/// accounts, and revealing hidden files - each behind the device's own PIN/
 /// biometric credential (see `AppLockService` - this app never stores or
-/// handles a PIN itself).
+/// handles a PIN itself). Turning one on or off asks for that credential, and
+/// none of them requires or implies another.
 class SettingsSecuritySection extends StatelessWidget {
   const SettingsSecuritySection({super.key});
 
-  Future<void> _handleLoginLockChanged(
-    BuildContext context,
-    SessionController session,
-    bool value,
-  ) async {
-    final success = value ? await session.setupLoginLock() : await session.disableLoginLock();
+  Future<void> _handleLockChanged(
+    BuildContext context, {
+    required Future<bool> Function() change,
+    required bool turningOn,
+    required String name,
+  }) async {
+    final success = await change();
     if (!success && context.mounted) {
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(
           content: Text(
-            value
-                ? "Could not set up login lock - make sure this device has a PIN, pattern, password, or biometric configured"
-                : 'Could not turn off login lock',
+            turningOn
+                ? "Could not turn on $name - make sure this device has a PIN, pattern, password, or biometric configured"
+                : 'Could not turn off $name',
           ),
           behavior: SnackBarBehavior.floating,
         ),
@@ -64,10 +66,17 @@ class SettingsSecuritySection extends StatelessWidget {
         NooSettingsRow(
           icon: LucideIcons.lock,
           label: Text(biometricLabel(platform)),
-          subtitle: const Text("Require this device's PIN or biometric to open Noo"),
+          subtitle: const Text(
+            "Require this device's PIN or biometric to open Noo",
+          ),
           trailing: NooToggle(
             checked: session.loginLockEnabled,
-            onChanged: (value) => _handleLoginLockChanged(context, session, value),
+            onChanged: (value) => _handleLockChanged(
+              context,
+              change: value ? session.setupLoginLock : session.disableLoginLock,
+              turningOn: value,
+              name: 'login lock',
+            ),
           ),
         ),
         NooSettingsRow(
@@ -76,7 +85,12 @@ class SettingsSecuritySection extends StatelessWidget {
           subtitle: const Text('Unlock to switch between saved accounts'),
           trailing: NooToggle(
             checked: session.lockAccountSwitching,
-            onChanged: session.loginLockEnabled ? session.setLockAccountSwitching : null,
+            onChanged: (value) => _handleLockChanged(
+              context,
+              change: () => session.setLockAccountSwitching(value),
+              turningOn: value,
+              name: 'account switching lock',
+            ),
           ),
         ),
         NooSettingsRow(
@@ -85,7 +99,12 @@ class SettingsSecuritySection extends StatelessWidget {
           subtitle: const Text('Unlock to reveal hidden files and folders'),
           trailing: NooToggle(
             checked: session.lockHiddenFiles,
-            onChanged: session.loginLockEnabled ? session.setLockHiddenFiles : null,
+            onChanged: (value) => _handleLockChanged(
+              context,
+              change: () => session.setLockHiddenFiles(value),
+              turningOn: value,
+              name: 'hidden files lock',
+            ),
           ),
         ),
       ],

test/providers/security_locks_test.dart

@@ -0,0 +1,156 @@
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:noo/providers/connectivity_controller.dart';
+import 'package:noo/providers/session_controller.dart';
+import 'package:noo/services/app_lock_service.dart';
+
+/// The three Settings -> Security locks (open the app, switch accounts, reveal
+/// hidden files) each work on their own - none needs or implies another. The
+/// device prompt is replaced with a recorder so the gates can be exercised.
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  setUpAll(() {
+    final messenger =
+        TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger;
+    messenger.setMockMethodCallHandler(
+      const MethodChannel('plugins.it_nomads.com/flutter_secure_storage'),
+      (call) async => call.method == 'readAll' ? <String, String>{} : null,
+    );
+    messenger.setMockMethodCallHandler(
+      const MethodChannel('dev.fluttercommunity.plus/connectivity'),
+      (call) async => call.method == 'check' ? <String>['none'] : null,
+    );
+    messenger.setMockStreamHandler(
+      const EventChannel('dev.fluttercommunity.plus/connectivity_status'),
+      MockStreamHandler.inline(onListen: (arguments, events) {}),
+    );
+  });
+
+  late List<String> prompts;
+  var authSucceeds = true;
+  var deviceSupported = true;
+
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+    prompts = [];
+    authSucceeds = true;
+    deviceSupported = true;
+    AppLockService.debugAuthenticate = (reason) async {
+      prompts.add(reason);
+      return authSucceeds;
+    };
+    AppLockService.debugIsDeviceSupported = () async => deviceSupported;
+  });
+
+  tearDown(() {
+    AppLockService.debugAuthenticate = null;
+    AppLockService.debugIsDeviceSupported = null;
+  });
+
+  SessionController build() => SessionController(ConnectivityController());
+
+  test(
+    'hidden files and account switching can be locked without login lock',
+    () async {
+      final session = build();
+
+      expect(await session.setLockHiddenFiles(true), isTrue);
+      expect(await session.setLockAccountSwitching(true), isTrue);
+
+      expect(session.lockHiddenFiles, isTrue);
+      expect(session.lockAccountSwitching, isTrue);
+      expect(session.loginLockEnabled, isFalse);
+      expect(
+        session.needsUnlock,
+        isFalse,
+        reason: 'opening the app stays open',
+      );
+    },
+  );
+
+  test('a gate prompts on its own, with login lock off', () async {
+    final session = build();
+
+    expect(await session.passGate(false, 'unused'), isTrue);
+    expect(prompts, isEmpty, reason: 'a gate that is off never prompts');
+
+    expect(await session.passGate(true, 'Unlock to show hidden files'), isTrue);
+    expect(prompts, ['Unlock to show hidden files']);
+
+    authSucceeds = false;
+    expect(await session.passGate(true, 'again'), isFalse);
+  });
+
+  test(
+    'turning a lock on needs a capable device and a successful auth',
+    () async {
+      final session = build();
+
+      deviceSupported = false;
+      expect(await session.setLockHiddenFiles(true), isFalse);
+      expect(session.lockHiddenFiles, isFalse);
+
+      deviceSupported = true;
+      authSucceeds = false;
+      expect(await session.setLockHiddenFiles(true), isFalse);
+      expect(session.lockHiddenFiles, isFalse);
+
+      authSucceeds = true;
+      expect(await session.setLockHiddenFiles(true), isTrue);
+      expect(session.lockHiddenFiles, isTrue);
+    },
+  );
+
+  test(
+    'turning a lock off needs auth, so it cannot just be flipped away',
+    () async {
+      final session = build();
+      await session.setLockAccountSwitching(true);
+      prompts.clear();
+
+      authSucceeds = false;
+      expect(await session.setLockAccountSwitching(false), isFalse);
+      expect(session.lockAccountSwitching, isTrue);
+
+      authSucceeds = true;
+      expect(await session.setLockAccountSwitching(false), isTrue);
+      expect(session.lockAccountSwitching, isFalse);
+      expect(prompts, hasLength(2));
+    },
+  );
+
+  test('setting a lock to its current value does not prompt', () async {
+    final session = build();
+    expect(await session.setLockHiddenFiles(false), isTrue);
+    expect(prompts, isEmpty);
+  });
+
+  test('turning login lock off leaves the other two locks alone', () async {
+    final session = build();
+    await session.setupLoginLock();
+    await session.setLockAccountSwitching(true);
+    await session.setLockHiddenFiles(true);
+    expect(session.loginLockEnabled, isTrue);
+
+    expect(await session.disableLoginLock(), isTrue);
+
+    expect(session.loginLockEnabled, isFalse);
+    expect(session.lockAccountSwitching, isTrue);
+    expect(session.lockHiddenFiles, isTrue);
+  });
+
+  test('each lock is saved on its own and restored', () async {
+    final first = build();
+    await first.setLockHiddenFiles(true);
+    // Let the fire-and-forget pref write land.
+    await Future<void>.delayed(const Duration(milliseconds: 50));
+
+    final second = build();
+    await Future<void>.delayed(const Duration(milliseconds: 100));
+    expect(second.lockHiddenFiles, isTrue);
+    expect(second.lockAccountSwitching, isFalse);
+    expect(second.loginLockEnabled, isFalse);
+  });
+}

test/widgets/avatar_menu_test.dart

@@ -15,6 +15,8 @@ import 'package:noo/providers/settings_controller.dart';
 import 'package:noo/providers/sync_status_controller.dart';
 import 'package:noo/providers/trash_controller.dart';
 import 'package:noo/theme/app_theme.dart';
+import 'package:noo/theme/design_tokens.dart';
+import 'package:noo/widgets/noo/core/noo_avatar.dart';
 import 'package:noo/widgets/app_top_bar.dart';
 import 'package:noo/widgets/noo/nav/noo_top_bar.dart';
 
@@ -174,4 +176,48 @@ void main() {
       expect(find.text('Add account'), findsOneWidget);
     },
   );
+
+  testWidgets("other accounts' avatars sit flush right in the dropdown", (
+    tester,
+  ) async {
+    SharedPreferences.setMockInitialValues({
+      'account_migration_v1_done': true,
+      'accounts_list': jsonEncode([
+        const SavedAccount(
+          id: accountId,
+          serverUrl: 'https://server.example.com',
+          username: 'alice',
+        ).toJson(),
+        const SavedAccount(
+          id: 'other_example_org__bob',
+          serverUrl: 'https://other.example.org',
+          username: 'bob',
+        ).toJson(),
+      ]),
+      'active_account_id': accountId,
+    });
+    await pumpTopBar(tester, navMenuStyle: NooNavMenuStyle.avatarMenu);
+
+    await tester.tap(find.byTooltip('Menu'));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 200));
+    // Expand the account list from the header.
+    await tester.tap(find.text('alice'));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 400));
+
+    final row = find.ancestor(
+      of: find.text('bob'),
+      matching: find.byType(InkWell),
+    );
+    final avatar = find.descendant(of: row, matching: find.byType(NooAvatar));
+    expect(avatar, findsOneWidget);
+
+    // Only the row's own padding between the avatar and the card's edge -
+    // no extra gutter pushing it in from the right.
+    expect(
+      tester.getTopRight(row).dx - tester.getTopRight(avatar).dx,
+      NooSpace.md,
+    );
+  });
 }