feat: add multiple terminal tabs with rename capability

Add support for multiple terminal instances per project with tabbed
navigation in the debug panel. Each terminal maintains its own PTY
session and WebSocket connection.

Backend changes:
- Add terminal metadata storage (id, name, created_at) per project
- Update terminal_manager.py with create, list, rename, delete functions
- Extend WebSocket endpoint to /api/terminal/ws/{project}/{terminal_id}
- Add REST endpoints for terminal CRUD operations
- Implement deferred PTY start with initial resize message

Frontend changes:
- Create TerminalTabs component with neobrutalism styling
- Support double-click rename and right-click context menu
- Fix terminal switching issues with transform-based hiding
- Use isActiveRef to prevent stale closure bugs in connect()
- Add double requestAnimationFrame for reliable activation timing
- Implement proper dimension validation in fitTerminal()

Other updates:
- Add GLM model configuration documentation to README
- Simplify client.py by removing CLI_COMMAND support
- Update chat session services with consistent patterns

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

server/services/assistant_chat_session.py

@@ -28,17 +28,6 @@ from .assistant_database import (
 # Load environment variables from .env file if present
 load_dotenv()
 
-
-def get_cli_command() -> str:
-    """
-    Get the CLI command to use for the agent.
-
-    Reads from CLI_COMMAND environment variable, defaults to 'claude'.
-    This allows users to use alternative CLIs like 'glm'.
-    """
-    return os.getenv("CLI_COMMAND", "claude")
-
-
 logger = logging.getLogger(__name__)
 
 # Root directory of the project
@@ -242,9 +231,8 @@ class AssistantChatSession:
         # Get system prompt with project context
         system_prompt = get_system_prompt(self.project_name, self.project_dir)
 
-        # Use system CLI (configurable via CLI_COMMAND environment variable)
-        cli_command = get_cli_command()
-        system_cli = shutil.which(cli_command)
+        # Use system Claude CLI
+        system_cli = shutil.which("claude")
 
         try:
             self.client = ClaudeSDKClient(