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/spec_chat_session.py

@@ -8,7 +8,6 @@ Uses the create-spec.md skill to guide users through app spec creation.
 
 import json
 import logging
-import os
 import shutil
 import threading
 from datetime import datetime
@@ -23,16 +22,6 @@ from ..schemas import ImageAttachment
 # 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__)
 
 
@@ -156,10 +145,8 @@ class SpecChatSession:
 
         # Create Claude SDK client with limited tools for spec creation
         # Use Opus for best quality spec generation
-        # Use system CLI to avoid bundled Bun runtime crash (exit code 3) on Windows
-        # CLI command is configurable via CLI_COMMAND environment variable
-        cli_command = get_cli_command()
-        system_cli = shutil.which(cli_command)
+        # Use system Claude CLI to avoid bundled Bun runtime crash (exit code 3) on Windows
+        system_cli = shutil.which("claude")
         try:
             self.client = ClaudeSDKClient(
                 options=ClaudeAgentOptions(