chore: initial commit — leaudit-platform project skeleton

17-table PostgreSQL schema with full Chinese column comments,
FastAPI project structure (admin/common/modules),
DSL rule files, and schema migration scripts.

run.py

@@ -0,0 +1,20 @@
+"""开发启动脚本。"""
+
+from __future__ import annotations
+
+import uvicorn
+
+from fastapi_admin.config import APP_HOST, APP_PORT
+
+
+def main():
+    uvicorn.run(
+        "fastapi_admin.app:app",
+        host=APP_HOST,
+        port=APP_PORT,
+        reload=True,
+    )
+
+
+if __name__ == "__main__":
+    main()