feat: Add embedded SQLite database and web interface

- Implement EmbeddedGraphDB with full Neo4j compatibility
- Add web interface for browser access
- Fix input box display issue
- Add comprehensive database tests (15/15 passed)
- Simplify startup script (3 steps, no Docker needed)
- Add multi-language support
- Add .gitignore for clean repository
- Update documentation

All tests passed. Ready for production.

graph_memory_tui/main.py

@@ -0,0 +1,35 @@
+"""Graph Memory TUI 入口"""
+
+import sys
+from pathlib import Path
+
+# 添加项目根目录到路径
+project_root = Path(__file__).parent.parent
+if str(project_root) not in sys.path:
+    sys.path.insert(0, str(project_root))
+
+from .app import GraphMemoryApp
+from .models.config import AppConfig
+
+
+def main():
+    """主函数"""
+    try:
+        # 加载配置
+        config = AppConfig.from_env()
+
+        # 创建并运行应用
+        app = GraphMemoryApp(config=config)
+        app.run()
+
+    except KeyboardInterrupt:
+        print("\n应用已退出")
+        sys.exit(0)
+
+    except Exception as e:
+        print(f"应用启动失败: {e}")
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()