Refactor code structure and remove redundant changes

codex-lens/build/lib/codexlens/storage/file_cache.py

@@ -0,0 +1,32 @@
+"""Simple filesystem cache helpers."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Optional
+
+
+@dataclass
+class FileCache:
+    """Caches file mtimes for incremental indexing."""
+
+    cache_path: Path
+
+    def load_mtime(self, path: Path) -> Optional[float]:
+        try:
+            key = self._key_for(path)
+            record = (self.cache_path / key).read_text(encoding="utf-8")
+            return float(record)
+        except Exception:
+            return None
+
+    def store_mtime(self, path: Path, mtime: float) -> None:
+        self.cache_path.mkdir(parents=True, exist_ok=True)
+        key = self._key_for(path)
+        (self.cache_path / key).write_text(str(mtime), encoding="utf-8")
+
+    def _key_for(self, path: Path) -> str:
+        safe = str(path).replace(":", "_").replace("\\", "_").replace("/", "_")
+        return f"{safe}.mtime"
+