feat(core): refonte architecture transverse (cache, network, websocket, DI)

- lib/app : app.dart, router mis à jour (routes nouveaux modules)
- lib/core/cache : cache_service + cached_datasource_decorator
- lib/core/network : api_client, offline_manager, retry_policy
- lib/core/websocket : websocket service (reconnexion exponentielle, heartbeat)
- lib/core/di : injection + register_module
- lib/core/storage : pending_operations_store (offline support)
- lib/core/navigation : main_navigation_layout (onglets par rôle)
- lib/core/config : environment, lcb_ft_constants
- lib/core/utils : error_formatter, validators
- pubspec.yaml/lock : dépendances mises à jour

lib/app/app.dart

@@ -46,7 +46,13 @@ class UnionFlowApp extends StatelessWidget {
       ],
       child: Consumer2<LocaleProvider, ThemeProvider>(
         builder: (context, locale, theme, child) {
-          return MaterialApp(
+          return BlocListener<AuthBloc, AuthState>(
+            listenWhen: (prev, curr) =>
+                curr is AuthAuthenticated && prev is! AuthAuthenticated,
+            listener: (context, _) {
+              context.read<OrgSwitcherBloc>().add(const OrgSwitcherLoadRequested());
+            },
+            child: MaterialApp(
             title: 'UnionFlow',
             debugShowCheckedModeBanner: false,
             scaffoldMessengerKey: UnionFlowApp.scaffoldMessengerKey,
@@ -79,6 +85,7 @@ class UnionFlowApp extends StatelessWidget {
                 child: child ?? const SizedBox(),
               );
             },
+          ),
         );
         },
       ),

lib/app/router/app_router.dart

@@ -20,7 +20,7 @@ import '../../features/adhesions/presentation/pages/adhesions_page_wrapper.dart'
 import '../../features/settings/presentation/pages/system_settings_page.dart';
 import '../../features/dashboard/presentation/pages/advanced_dashboard_page.dart';
 import '../../features/admin/presentation/pages/user_management_page.dart';
-import '../../features/communication/presentation/pages/conversations_page.dart';
+import '../../features/communication/presentation/pages/conversations_page_wrapper.dart';
 import '../../features/finance_workflow/presentation/pages/pending_approvals_page.dart';
 import '../../features/finance_workflow/presentation/pages/budgets_list_page.dart';
 import '../../core/navigation/main_navigation_layout.dart';
@@ -86,7 +86,7 @@ class AppRouter {
     '/reports': (context) => const ReportsPageWrapper(),
     '/finances': (context) => const CotisationsPageWrapper(),
     '/adhesions': (context) => const AdhesionsPageWrapper(),
-    '/messages': (context) => const ConversationsPage(),
+    '/messages': (context) => const ConversationsPageWrapper(),
     '/settings': (context) => const SystemSettingsPage(),
     '/analytics': (context) {
       final authState = context.read<AuthBloc>().state;

lib/core/navigation/main_navigation_layout.dart

@@ -118,7 +118,7 @@ class _MainNavigationLayoutState extends State<MainNavigationLayout> {
             statusBarIconBrightness: Brightness.dark,
           ),
           child: Scaffold(
-            backgroundColor: ColorTokens.background,
+            backgroundColor: Theme.of(context).scaffoldBackgroundColor,
             body: SafeArea(
               top: true,
               bottom: false,
@@ -199,12 +199,13 @@ class _PillNavigationBar extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
     return Container(
       decoration: BoxDecoration(
-        color: ColorTokens.surface,
+        color: scheme.surface,
         boxShadow: [
           BoxShadow(
-            color: ColorTokens.shadow,
+            color: scheme.shadow.withOpacity(0.12),
             blurRadius: 12,
             offset: const Offset(0, -2),
           ),

lib/core/network/api_client.dart

@@ -1,6 +1,7 @@
 import 'package:dio/dio.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import '../../shared/design_system/tokens/app_colors.dart';
 import 'package:injectable/injectable.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import '../../app/app.dart';
@@ -35,17 +36,7 @@ class ApiClient {
       ),
     );
 
-    // Intercepteur de Log (Uniquement en Dev)
+    // Intercepteur de Token & Refresh automatique (doit être AVANT le logger)
-    if (AppConfig.enableLogging) {
-      _dio.interceptors.add(LogInterceptor(
-        requestHeader: true,
-        requestBody: true,
-        responseBody: true,
-        logPrint: (obj) => print('🌐 [API] $obj'),
-      ));
-    }
-
-    // Intercepteur de Token & Refresh automatique
     _dio.interceptors.add(
       InterceptorsWrapper(
         onRequest: (options, handler) async {
@@ -112,6 +103,16 @@ class ApiClient {
         },
       ),
     );
+
+    // Intercepteur de Log (après le token pour voir le Bearer dans les logs)
+    if (AppConfig.enableLogging) {
+      _dio.interceptors.add(LogInterceptor(
+        requestHeader: true,
+        requestBody: true,
+        responseBody: true,
+        logPrint: (obj) => print('🌐 [API] $obj'),
+      ));
+    }
   }
 
   void _forceLogout() {
@@ -132,7 +133,7 @@ class ApiClient {
                 ),
               ],
             ),
-            backgroundColor: Colors.orange.shade700,
+            backgroundColor: AppColors.warning,
             duration: const Duration(seconds: 4),
             behavior: SnackBarBehavior.floating,
           ),

lib/core/websocket/websocket_service.dart

@@ -77,6 +77,17 @@ abstract class WebSocketEvent {
           organizationId: json['organizationId'] as String?,
         );
 
+      case 'NOUVEAU_MESSAGE':
+      case 'MESSAGE_SUPPRIME':
+      case 'CONVERSATION_LUE':
+        return ChatMessageEvent(
+          eventType: eventType,
+          timestamp: timestamp,
+          data: data,
+          conversationId: json['conversationId'] as String?,
+          organizationId: json['organizationId'] as String?,
+        );
+
       default:
         return GenericEvent(
           eventType: eventType,
@@ -144,6 +155,19 @@ class ContributionEvent extends WebSocketEvent {
   });
 }
 
+class ChatMessageEvent extends WebSocketEvent {
+  final String? conversationId;
+  final String? organizationId;
+
+  ChatMessageEvent({
+    required super.eventType,
+    required super.timestamp,
+    required super.data,
+    this.conversationId,
+    this.organizationId,
+  });
+}
+
 class GenericEvent extends WebSocketEvent {
   GenericEvent({
     required super.eventType,

pubspec.lock

@@ -17,6 +17,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "8.4.1"
+  ansicolor:
+    dependency: transitive
+    description:
+      name: ansicolor
+      sha256: "50e982d500bc863e1d703448afdbf9e5a72eb48840a4f766fa361ffd6877055f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.3"
   archive:
     dependency: transitive
     description:
@@ -177,6 +185,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.2.0"
+  cli_util:
+    dependency: transitive
+    description:
+      name: cli_util
+      sha256: ff6785f7e9e3c38ac98b2fb035701789de90154024a75b6cb926445e83197d1c
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.4.2"
   clock:
     dependency: transitive
     description:
@@ -249,6 +265,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.0.7"
+  csslib:
+    dependency: transitive
+    description:
+      name: csslib
+      sha256: "09bad715f418841f976c77db72d5398dc1253c21fb9c0c7f0b0b985860b2d58e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.2"
   csv:
     dependency: "direct main"
     description:
@@ -451,6 +475,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_launcher_icons:
+    dependency: "direct dev"
+    description:
+      name: flutter_launcher_icons
+      sha256: "526faf84284b86a4cb36d20a5e45147747b7563d921373d4ee0559c54fcdbcea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.13.1"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -488,6 +520,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_native_splash:
+    dependency: "direct dev"
+    description:
+      name: flutter_native_splash
+      sha256: "7062602e0dbd29141fb8eb19220b5871ca650be5197ab9c1f193a28b17537bc7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.4"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -623,6 +663,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.2"
+  html:
+    dependency: transitive
+    description:
+      name: html
+      sha256: "6d1264f2dffa1b1101c25a91dff0dc2daee4c18e87cd8538729773c073dbf602"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.15.6"
   http:
     dependency: "direct main"
     description:
@@ -1489,6 +1537,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.4.0"
+  universal_io:
+    dependency: transitive
+    description:
+      name: universal_io
+      sha256: f63cbc48103236abf48e345e07a03ce5757ea86285ed313a6a032596ed9301e2
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.1"
   url_launcher:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -83,12 +83,49 @@ dev_dependencies:
   bloc_test: ^9.1.7
   integration_test:
     sdk: flutter
+  flutter_launcher_icons: ^0.13.1
+  flutter_native_splash: ^2.4.1
+
+# ─── Génération des icônes d'application (launcher) ──────────────────────────
+# Source unique : assets/images/unionflow-logo.png
+# Régénérer :  dart run flutter_launcher_icons
+flutter_launcher_icons:
+  android: "ic_launcher"
+  ios: true
+  remove_alpha_ios: true
+  image_path: "assets/images/unionflow-logo.png"
+  background_color_ios: "#FFFFFF"
+  min_sdk_android: 21
+  adaptive_icon_background: "#FFFFFF"
+  adaptive_icon_foreground: "assets/images/unionflow-logo.png"
+  web:
+    generate: false
+  windows:
+    generate: false
+  macos:
+    generate: false
+
+# ─── Génération du splash screen natif (Android + iOS) ───────────────────────
+# Régénérer :  dart run flutter_native_splash:create
+flutter_native_splash:
+  color: "#FFFFFF"
+  color_dark: "#0A0D1A"
+  image: "assets/images/unionflow-logo.png"
+  android_12:
+    image: "assets/images/unionflow-logo.png"
+    color: "#FFFFFF"
+    color_dark: "#0A0D1A"
+  android: true
+  ios: true
+  web: false
+  fullscreen: false
 
 flutter:
   uses-material-design: true
   generate: true
   assets:
     - assets/images/
+    - assets/images/branding/
     - assets/images/payment_methods/wave/
     - assets/images/payment_methods/orange_money/
     - assets/images/payment_methods/free_money/