Add Web Dashboard with multi-device control and callback hooks

Features:
- Web Dashboard: FastAPI-based dashboard with Vue.js frontend
  - Multi-device support (ADB, HDC, iOS)
  - Real-time WebSocket updates for task progress
  - Device management with status tracking
  - Task queue with execution controls (start/stop/re-execute)
  - Detailed task information display (thinking, actions, completion messages)
  - Screenshot viewing per device
  - LAN deployment support with configurable CORS

- Callback Hooks: Interrupt and modify task execution
  - step_callback: Called after each step with StepResult
  - before_action_callback: Called before executing action
  - Support for task interruption and dynamic task switching
  - Example scripts demonstrating callback usage

- Configuration: Environment-based configuration
  - .env file support for all settings
  - .env.example template with documentation
  - Model API configuration (base URL, model name, API key)
  - Dashboard configuration (host, port, CORS, device type)
  - Phone agent configuration (delays, max steps, language)

Technical improvements:
- Fixed forward reference issue with StepResult
- Added package exports for callback types and configs
- Enhanced dependencies with FastAPI, WebSocket support
- Thread-safe task execution with device locking
- Async WebSocket broadcasting from sync thread pool

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

scripts/run_dashboard.bat

@@ -0,0 +1,28 @@
+@echo off
+REM AutoGLM Dashboard - Run Script for Windows
+
+REM Change to project root
+cd /d "%~dp0.."
+
+REM Load .env file if it exists (use set command to parse)
+if exist .env (
+    for /f "tokens=*" %%a in ('type .env ^| findstr /v "^#"') do set %%a
+)
+
+REM Set defaults
+if not defined DASHBOARD_HOST set DASHBOARD_HOST=0.0.0.0
+if not defined DASHBOARD_PORT set DASHBOARD_PORT=8080
+if not defined DASHBOARD_DEBUG set DASHBOARD_DEBUG=false
+
+REM Print configuration
+echo ==========================================
+echo   AutoGLM Dashboard
+echo ==========================================
+echo Host: %DASHBOARD_HOST%
+echo Port: %DASHBOARD_PORT%
+echo Debug: %DASHBOARD_DEBUG%
+echo ==========================================
+echo.
+
+REM Run the dashboard
+python -m uvicorn dashboard.main:app --host %DASHBOARD_HOST% --port %DASHBOARD_PORT% --reload