Serveur réécrit en Rust

Le serveur Dart (bin/) est remplacé par un serveur Rust (server/) :
tokio + axum, reqwest/rustls, SQLite embarqué via rusqlite. Même API,
mêmes routes et mêmes réponses : le front Flutter ne change pas.

La base de production est reprise telle quelle : schéma, migrations et
formats de dates (DateTime.toIso8601String de Dart) sont reproduits à
l'identique, les sessions et hachages existants restent valides.

Comportement conservé : cascade de routage, anti-SSRF, logs masqués,
rate limits, transcodage HLS/turbo.ts avec repli GPU, quotas fournisseur,
enregistrements (reprise, relances, fusion), season passes, EPG, logos de
repli, arrêt gracieux sur SIGTERM. Tests Dart portés (132 tests Rust) ;
la CI exécute fmt, test et clippy -D warnings, l'image Docker compile le
serveur dans un étage rust:1.98.1.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

bin/services/cleanup_service.dart

@@ -1,109 +0,0 @@
-import 'dart:io';
-import 'dart:async';
-
-class CleanupService {
-  final List<Directory> _targetDirectories = [];
-  Timer? _timer;
-  final Duration _defaultMaxAge;
-
-  CleanupService({Duration defaultMaxAge = const Duration(hours: 24)})
-      : _defaultMaxAge = defaultMaxAge;
-
-  /// Add a directory to be monitored
-  void addTarget(Directory dir) {
-    if (!dir.existsSync()) {
-      try {
-        dir.createSync(recursive: true);
-        print('CleanupService: Created missing directory: ${dir.path}');
-      } catch (e) {
-        print('CleanupService: Should monitor ${dir.path} but it does not exist and could not be created: $e');
-        return;
-      }
-    }
-    _targetDirectories.add(dir);
-    print('CleanupService: Monitoring ${dir.path}');
-  }
-
-  /// Start the periodic cleanup task
-  void start({Duration interval = const Duration(hours: 6)}) {
-    _timer?.cancel();
-    print('CleanupService: Starting scheduler (Interval: ${interval.inHours}h)');
-    
-    // Run immediately on start
-    runCleanup();
-
-    _timer = Timer.periodic(interval, (_) => runCleanup());
-  }
-
-  /// Stop the scheduler
-  void stop() {
-    _timer?.cancel();
-    print('CleanupService: Scheduler stopped');
-  }
-
-  /// Trigger a manual cleanup
-  Future<Map<String, dynamic>> runCleanup() async {
-    print('CleanupService: Running cleanup task...');
-    int deletedCount = 0;
-    int freedBytes = 0;
-    List<String> errors = [];
-
-    for (final dir in _targetDirectories) {
-      if (!dir.existsSync()) continue;
-
-      try {
-        final result = await _cleanDirectory(dir, _defaultMaxAge);
-        deletedCount += result.count;
-        freedBytes += result.bytes;
-      } catch (e) {
-        print('CleanupService: Error processing ${dir.path}: $e');
-        errors.add('Error in ${dir.path}: $e');
-      }
-    }
-
-    final summary = {
-      'status': 'complete',
-      'deleted_files': deletedCount,
-      'freed_bytes': freedBytes,
-      'timestamp': DateTime.now().toIso8601String(),
-      'errors': errors,
-    };
-
-    print('CleanupService: Cleanup complete. Deleted $deletedCount files, freed ${(freedBytes / 1024 / 1024).toStringAsFixed(2)} MB');
-    return summary;
-  }
-
-  Future<({int count, int bytes})> _cleanDirectory(Directory dir, Duration maxAge) async {
-    int count = 0;
-    int bytes = 0;
-    final now = DateTime.now();
-    final threshold = now.subtract(maxAge);
-
-    try {
-      await for (final entity in dir.list(recursive: true, followLinks: false)) {
-        if (entity is File) {
-          try {
-            final stat = await entity.stat();
-            // Check Modified AND Accessed time (if available) to be safe
-            // Ideally we use modified time for temp files
-            if (stat.modified.isBefore(threshold)) {
-              final fileSize = stat.size;
-              await entity.delete();
-              count++;
-              bytes += fileSize;
-              // print('CleanupService: Deleted ${entity.path} (Age: ${now.difference(stat.modified).inHours}h)');
-            }
-          } catch (e) {
-            // Ignore individual file errors (locked files etc)
-            // print('CleanupService: Failed to delete ${entity.path}: $e');
-          }
-        }
-      }
-    } catch (e) {
-      print('CleanupService: Failed to list ${dir.path}: $e');
-      rethrow;
-    }
-
-    return (count: count, bytes: bytes);
-  }
-}