feat: TaskSelector v2 全链路展示 + 同步检查 + MCP Server + 服务器 Git 排除

- admin-web: TaskSelector 重构为按域+层全链路展示，新增同步检查功能
- admin-web: TaskConfig 动态加载 Flow/处理模式定义，DWD 表过滤内嵌域面板
- admin-web: App hydrate 完成前显示 loading，避免误跳 /login
- backend: 新增 /tasks/sync-check 对比后端与 ETL 真实注册表
- backend: 新增 /tasks/flows 返回 Flow 和处理模式定义
- apps/mcp-server: 新增 MCP Server 模块（百炼 AI PostgreSQL 只读查询）
- scripts/server: 新增 setup-server-git.py + server-exclude.txt
- docs: 更新 LAUNCH-CHECKLIST 添加 Git 排除配置步骤
- pyproject.toml: workspace members 新增 mcp-server

apps/mcp-server/pyproject.toml

@@ -0,0 +1,22 @@
+[project]
+name = "zqyy-mcp-server"
+version = "0.1.0"
+description = "MCP Server — 为阿里云百炼 AI 应用提供 PostgreSQL 只读查询能力"
+requires-python = ">=3.10"
+dependencies = [
+    "mcp[cli]>=1.9",
+    "psycopg[pool]>=3.1",
+    "python-dotenv>=1.0",
+    "sqlparse>=0.5",
+    "starlette>=0.27",
+    "uvicorn[standard]>=0.34",
+]
+
+[dependency-groups]
+dev = [
+    "pytest>=8.0",
+]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+pythonpath = ["."]