Initial commit: Captain Claude Mobile App

- Flutter app with chat and terminal screens
- WebSocket integration for real-time chat
- xterm integration for screen sessions
- Markdown rendering with code blocks
- JWT authentication

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

lib/models/session.dart

@@ -0,0 +1,50 @@
+class ScreenSession {
+  final String name;
+  final String pid;
+  final bool attached;
+
+  ScreenSession({
+    required this.name,
+    required this.pid,
+    required this.attached,
+  });
+
+  factory ScreenSession.fromJson(Map<String, dynamic> json) {
+    return ScreenSession(
+      name: json['name'] ?? '',
+      pid: json['pid'] ?? '',
+      attached: json['attached'] ?? false,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'name': name,
+      'pid': pid,
+      'attached': attached,
+    };
+  }
+}
+
+class Conversation {
+  final String id;
+  final String title;
+  final DateTime createdAt;
+  final int messageCount;
+
+  Conversation({
+    required this.id,
+    required this.title,
+    required this.createdAt,
+    required this.messageCount,
+  });
+
+  factory Conversation.fromJson(Map<String, dynamic> json) {
+    return Conversation(
+      id: json['id'],
+      title: json['title'] ?? 'Untitled',
+      createdAt: DateTime.parse(json['created_at']),
+      messageCount: json['message_count'] ?? 0,
+    );
+  }
+}