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/main.py

@@ -6,7 +6,6 @@ Main entry point for the Autonomous Coding UI server.
 Provides REST API, WebSocket, and static file serving.
 """
 
-import os
 import shutil
 from contextlib import asynccontextmanager
 from pathlib import Path
@@ -16,16 +15,6 @@ from dotenv import load_dotenv
 # 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")
-
 from fastapi import FastAPI, HTTPException, Request, WebSocket
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import FileResponse
@@ -152,9 +141,8 @@ async def health_check():
 @app.get("/api/setup/status", response_model=SetupStatus)
 async def setup_status():
     """Check system setup status."""
-    # Check for CLI (configurable via CLI_COMMAND environment variable)
-    cli_command = get_cli_command()
-    claude_cli = shutil.which(cli_command) is not None
+    # Check for Claude CLI
+    claude_cli = shutil.which("claude") is not None
 
     # Check for CLI configuration directory
     # Note: CLI no longer stores credentials in ~/.claude/.credentials.json