feat: BLoC tests complets + sécurité production + freerasp 7.5.1 migration

## Tests BLoC (Task P2.4 Mobile)
- 25 nouveaux fichiers *_bloc_test.dart + mocks générés (build_runner)
- Features couvertes : authentication, admin_users, adhesions, backup,
  communication/messaging, contributions, dashboard, finance (approval/budget),
  events, explore/network, feed, logs_monitoring, notifications, onboarding,
  organizations (switcher/types/CRUD), profile, reports, settings, solidarity
- ~380 tests, > 80% coverage BLoCs

## Sécurité Production (Task P2.2)
- lib/core/security/app_integrity_service.dart (freerasp 7.5.1)
- Migration API breaking changes freerasp 7.5.1 :
  - onRootDetected → onPrivilegedAccess
  - onDebuggerDetected → onDebug
  - onSignatureDetected → onAppIntegrity
  - onHookDetected → onHooks
  - onEmulatorDetected → onSimulator
  - onUntrustedInstallationSourceDetected → onUnofficialStore
  - onDeviceBindingDetected → onDeviceBinding
  - onObfuscationIssuesDetected → onObfuscationIssues
  - Talsec.start() split → start() + attachListener()
  - const AndroidConfig/IOSConfig → final (constructors call ConfigVerifier)
  - supportedAlternativeStores → supportedStores

## Pubspec
- bloc_test: ^9.1.7 → ^10.0.0 (compat flutter_bloc ^9.0.0)
- freerasp 7.5.1

## Config
- android/app/build.gradle : ajustements release
- lib/core/config/environment.dart : URLs API actualisées
- lib/main.dart + app_router : intégrations sécurité/BLoC

## Cleanup
- Suppression docs intermédiaires (TACHES_*.md, TASK_*_COMPLETION_REPORT.md,
  TESTS_UNITAIRES_PROGRESS.md)
- .g.dart régénérés (json_serializable)
- .mocks.dart régénérés (mockito)

## Résultat
- 142 fichiers, +27 596 insertions
- Toutes les tâches P2 mobile complétées

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

lib/features/finance_workflow/data/models/budget_model.g.dart

@@ -7,30 +7,30 @@ part of 'budget_model.dart';
 // **************************************************************************
 
 BudgetModel _$BudgetModelFromJson(Map<String, dynamic> json) => BudgetModel(
-      id: json['id'] as String,
-      name: json['name'] as String,
-      description: json['description'] as String?,
-      organizationId: json['organizationId'] as String,
-      period: $enumDecode(_$BudgetPeriodEnumMap, json['period']),
-      year: (json['year'] as num).toInt(),
-      month: (json['month'] as num?)?.toInt(),
-      status: $enumDecode(_$BudgetStatusEnumMap, json['status']),
-      lines: json['lines'] == null
-          ? const []
-          : BudgetModel._linesFromJson(json['lines'] as List?),
-      totalPlanned: (json['totalPlanned'] as num).toDouble(),
-      totalRealized: (json['totalRealized'] as num?)?.toDouble() ?? 0,
-      currency: json['currency'] as String? ?? 'XOF',
-      createdBy: json['createdBy'] as String,
-      createdAt: DateTime.parse(json['createdAt'] as String),
-      approvedAt: json['approvedAt'] == null
-          ? null
-          : DateTime.parse(json['approvedAt'] as String),
-      approvedBy: json['approvedBy'] as String?,
-      startDate: DateTime.parse(json['startDate'] as String),
-      endDate: DateTime.parse(json['endDate'] as String),
-      metadata: json['metadata'] as Map<String, dynamic>?,
-    );
+  id: json['id'] as String,
+  name: json['name'] as String,
+  description: json['description'] as String?,
+  organizationId: json['organizationId'] as String,
+  period: $enumDecode(_$BudgetPeriodEnumMap, json['period']),
+  year: (json['year'] as num).toInt(),
+  month: (json['month'] as num?)?.toInt(),
+  status: $enumDecode(_$BudgetStatusEnumMap, json['status']),
+  lines: json['lines'] == null
+      ? const []
+      : BudgetModel._linesFromJson(json['lines'] as List?),
+  totalPlanned: (json['totalPlanned'] as num).toDouble(),
+  totalRealized: (json['totalRealized'] as num?)?.toDouble() ?? 0,
+  currency: json['currency'] as String? ?? 'XOF',
+  createdBy: json['createdBy'] as String,
+  createdAt: DateTime.parse(json['createdAt'] as String),
+  approvedAt: json['approvedAt'] == null
+      ? null
+      : DateTime.parse(json['approvedAt'] as String),
+  approvedBy: json['approvedBy'] as String?,
+  startDate: DateTime.parse(json['startDate'] as String),
+  endDate: DateTime.parse(json['endDate'] as String),
+  metadata: json['metadata'] as Map<String, dynamic>?,
+);
 
 Map<String, dynamic> _$BudgetModelToJson(BudgetModel instance) =>
     <String, dynamic>{