feat(govdoc): 新增内部公文模块全链路（后端58+前端11文件）

fastapi_modules/fastapi_leaudit/govdoc_engine/dsl/loader.py

@@ -0,0 +1,24 @@
+"""加载并校验 rules.yaml。"""
+
+from __future__ import annotations
+from functools import lru_cache
+from pathlib import Path
+import yaml
+
+from fastapi_modules.fastapi_leaudit.govdoc_engine.dsl.schema import RuleSet
+
+
+def _load_uncached(path: Path) -> RuleSet:
+    with open(path, encoding="utf-8") as f:
+        data = yaml.safe_load(f)
+    return RuleSet.model_validate(data)
+
+
+@lru_cache(maxsize=32)
+def _load_cached(path_str: str, mtime: float) -> RuleSet:
+    return _load_uncached(Path(path_str))
+
+
+def load_rules(path: str | Path) -> RuleSet:
+    path = Path(path)
+    return _load_cached(str(path.resolve()), path.stat().st_mtime)