feat(profile): implement user-initiated GDPR-compliant profile deletion

- Add DELETE /users/me endpoint with cascading data removal
- Implement frontend confirmation dialog and deletion flow
- Add audit logging for deletion requests
- Update localization files for new UI strings
- Add scheduled cleanup service for AI traces
- Document GDPR compliance in technical specification

BREAKING CHANGE: Users can now permanently delete their profiles and associated data

flutter/lib/generated/intl/messages_all.dart

@@ -0,0 +1,68 @@
+// DO NOT EDIT. This is code generated via package:intl/generate_localized.dart
+// This is a library that looks up messages for specific locales by
+// delegating to the appropriate library.
+
+// Ignore issues from commonly used lints in this file.
+// ignore_for_file:implementation_imports, file_names, unnecessary_new
+// ignore_for_file:unnecessary_brace_in_string_interps, directives_ordering
+// ignore_for_file:argument_type_not_assignable, invalid_assignment
+// ignore_for_file:prefer_single_quotes, prefer_generic_function_type_aliases
+// ignore_for_file:comment_references
+
+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:intl/intl.dart';
+import 'package:intl/message_lookup_by_library.dart';
+import 'package:intl/src/intl_helpers.dart';
+
+import 'messages_en.dart' as messages_en;
+
+typedef Future<dynamic> LibraryLoader();
+Map<String, LibraryLoader> _deferredLibraries = {
+  'en': () => new SynchronousFuture(null),
+};
+
+MessageLookupByLibrary? _findExact(String localeName) {
+  switch (localeName) {
+    case 'en':
+      return messages_en.messages;
+    default:
+      return null;
+  }
+}
+
+/// User programs should call this before using [localeName] for messages.
+Future<bool> initializeMessages(String localeName) {
+  var availableLocale = Intl.verifiedLocale(
+    localeName,
+    (locale) => _deferredLibraries[locale] != null,
+    onFailure: (_) => null,
+  );
+  if (availableLocale == null) {
+    return new SynchronousFuture(false);
+  }
+  var lib = _deferredLibraries[availableLocale];
+  lib == null ? new SynchronousFuture(false) : lib();
+  initializeInternalMessageLookup(() => new CompositeMessageLookup());
+  messageLookup.addLocale(availableLocale, _findGeneratedMessagesFor);
+  return new SynchronousFuture(true);
+}
+
+bool _messagesExistFor(String locale) {
+  try {
+    return _findExact(locale) != null;
+  } catch (e) {
+    return false;
+  }
+}
+
+MessageLookupByLibrary? _findGeneratedMessagesFor(String locale) {
+  var actualLocale = Intl.verifiedLocale(
+    locale,
+    _messagesExistFor,
+    onFailure: (_) => null,
+  );
+  if (actualLocale == null) return null;
+  return _findExact(actualLocale);
+}

flutter/lib/generated/intl/messages_en.dart

@@ -0,0 +1,25 @@
+// DO NOT EDIT. This is code generated via package:intl/generate_localized.dart
+// This is a library that provides messages for a en locale. All the
+// messages from the main program should be duplicated here with the same
+// function name.
+
+// Ignore issues from commonly used lints in this file.
+// ignore_for_file:unnecessary_brace_in_string_interps, unnecessary_new
+// ignore_for_file:prefer_single_quotes,comment_references, directives_ordering
+// ignore_for_file:annotate_overrides,prefer_generic_function_type_aliases
+// ignore_for_file:unused_import, file_names, avoid_escaping_inner_quotes
+// ignore_for_file:unnecessary_string_interpolations, unnecessary_string_escapes
+
+import 'package:intl/intl.dart';
+import 'package:intl/message_lookup_by_library.dart';
+
+final messages = new MessageLookup();
+
+typedef String MessageIfAbsent(String messageStr, List<dynamic> args);
+
+class MessageLookup extends MessageLookupByLibrary {
+  String get localeName => 'en';
+
+  final messages = _notInlinedMessages(_notInlinedMessages);
+  static Map<String, Function> _notInlinedMessages(_) => <String, Function>{};
+}

flutter/lib/generated/l10n.dart

@@ -0,0 +1,80 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+import 'package:flutter/material.dart';
+import 'package:intl/intl.dart';
+import 'intl/messages_all.dart';
+
+// **************************************************************************
+// Generator: Flutter Intl IDE plugin
+// Made by Localizely
+// **************************************************************************
+
+// ignore_for_file: non_constant_identifier_names, lines_longer_than_80_chars
+// ignore_for_file: join_return_with_assignment, prefer_final_in_for_each
+// ignore_for_file: avoid_redundant_argument_values, avoid_escaping_inner_quotes
+
+class S {
+  S();
+
+  static S? _current;
+
+  static S get current {
+    assert(
+      _current != null,
+      'No instance of S was loaded. Try to initialize the S delegate before accessing S.current.',
+    );
+    return _current!;
+  }
+
+  static const AppLocalizationDelegate delegate = AppLocalizationDelegate();
+
+  static Future<S> load(Locale locale) {
+    final name = (locale.countryCode?.isEmpty ?? false)
+        ? locale.languageCode
+        : locale.toString();
+    final localeName = Intl.canonicalizedLocale(name);
+    return initializeMessages(localeName).then((_) {
+      Intl.defaultLocale = localeName;
+      final instance = S();
+      S._current = instance;
+
+      return instance;
+    });
+  }
+
+  static S of(BuildContext context) {
+    final instance = S.maybeOf(context);
+    assert(
+      instance != null,
+      'No instance of S present in the widget tree. Did you add S.delegate in localizationsDelegates?',
+    );
+    return instance!;
+  }
+
+  static S? maybeOf(BuildContext context) {
+    return Localizations.of<S>(context, S);
+  }
+}
+
+class AppLocalizationDelegate extends LocalizationsDelegate<S> {
+  const AppLocalizationDelegate();
+
+  List<Locale> get supportedLocales {
+    return const <Locale>[Locale.fromSubtags(languageCode: 'en')];
+  }
+
+  @override
+  bool isSupported(Locale locale) => _isSupported(locale);
+  @override
+  Future<S> load(Locale locale) => S.load(locale);
+  @override
+  bool shouldReload(AppLocalizationDelegate old) => false;
+
+  bool _isSupported(Locale locale) {
+    for (var supportedLocale in supportedLocales) {
+      if (supportedLocale.languageCode == locale.languageCode) {
+        return true;
+      }
+    }
+    return false;
+  }
+}