fix: resolve pre-existing lint/format violations blocking new CI gate

The new lint workflow (introduced in the previous commit) caught
findings that predate it and were never enforced by CI:

- memcached.py passed a positional bool to pymemcache's delete() -
  switched to the noreply= keyword it already supports.
- cache.py's internal invariant assert and session/manager.py's
  necessarily-long get_session() (security/renewal branches) are
  legitimate; ignored per-file in pyproject.toml, matching the
  existing convention there.
- cache.py/routes.py/session/manager.py/state/manager.py had drifted
  from `ruff format` output; reformatted mechanically.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: allen0099

fastapi_cachex/backends/memcached.py

@@ -177,7 +177,9 @@ async def clear_path(self, path: str, include_params: bool = False) -> int:
         # Try to delete the prefixed key (exact match only)
         prefixed_key = self._make_key(path)
         try:
-            result = await asyncio.to_thread(self.client.delete, prefixed_key, False)
+            result = await asyncio.to_thread(
+                self.client.delete, prefixed_key, noreply=False
+            )
         except Exception:  # noqa: BLE001
             return 0
         else:

fastapi_cachex/cache.py

@@ -320,9 +320,7 @@ async def wrapper(*args: Any, **kwargs: Any) -> Response:
                         # StreamingResponse/FileResponse — cannot compute ETag; serve as-is
                         current_response.headers["Cache-Control"] = cache_control
                         return current_response
-                    current_etag = (
-                        f'W/"{hashlib.md5(current_body).hexdigest()}"'  # noqa: S324
-                    )
+                    current_etag = f'W/"{hashlib.md5(current_body).hexdigest()}"'  # noqa: S324
 
                     if client_etag == current_etag:
                         # For no-cache, compare fresh data with client's ETag
@@ -381,7 +379,9 @@ async def wrapper(*args: Any, **kwargs: Any) -> Response:
 
             # Update cache if needed
             if not cached_data or cached_data.fingerprint != current_etag:
-                assert current_body is not None  # guaranteed by early-return guards above
+                assert (
+                    current_body is not None
+                )  # guaranteed by early-return guards above
                 # Store in cache if data changed
                 await cache_backend.set(
                     cache_key,

fastapi_cachex/routes.py

@@ -129,7 +129,9 @@ async def _get_cached_hits_handler(backend: BaseCacheBackend) -> CacheHitsRespon
         if method:  # Valid cache key
             # Check if cache entry is expired
             is_expired = expiry is not None and expiry <= now
-            ttl_remaining = max(0.0, round(expiry - now, 2)) if expiry is not None else None
+            ttl_remaining = (
+                max(0.0, round(expiry - now, 2)) if expiry is not None else None
+            )
 
             cached_hits.append(
                 CacheHitRecord(
@@ -188,7 +190,9 @@ async def _get_cached_records_handler(
             content = entry.content
             content_size = len(content) if isinstance(content, (bytes, str)) else 0
 
-            ttl_remaining = max(0.0, round(expiry - now, 2)) if expiry is not None else None
+            ttl_remaining = (
+                max(0.0, round(expiry - now, 2)) if expiry is not None else None
+            )
 
             content_preview = (
                 content[:100].decode("utf-8", errors="ignore")

fastapi_cachex/session/manager.py

@@ -449,7 +449,9 @@ async def _save_session(self, session: Session) -> None:
             ttl = max(ttl, 1)  # Ensure at least 1 second
 
         fingerprint = self.security.hash_data(value.decode("utf-8"))
-        await self.backend.set(key, CacheEntry(fingerprint=fingerprint, content=value), ttl=ttl)
+        await self.backend.set(
+            key, CacheEntry(fingerprint=fingerprint, content=value), ttl=ttl
+        )
         logger.debug("Session saved; id=%s ttl=%s", session.session_id, ttl)
 
     async def _load_session(self, session_id: str) -> Session | None:

fastapi_cachex/state/manager.py

@@ -125,7 +125,9 @@ async def create_state(
         fingerprint = hashlib.sha256(json_content.encode()).hexdigest()
 
         cache_key = f"{self.key_prefix}{state}"
-        entry = CacheEntry(fingerprint=fingerprint, content=json_content.encode("utf-8"))
+        entry = CacheEntry(
+            fingerprint=fingerprint, content=json_content.encode("utf-8")
+        )
         await self.backend.set(cache_key, entry, ttl=effective_ttl)
 
         logger.debug("OAuth state created; state=%s ttl=%s", state, effective_ttl)

pyproject.toml

@@ -111,10 +111,12 @@ keep-runtime-typing = true
 ]
 "fastapi_cachex/cache.py" = [
     "PLR0913", "PLR0915", "PLR0911", "PLR0912", # Many arguments/statements/returns/branches needed for flexible caching logic
+    "S101", # Internal invariant guard, not a validation shortcut
 ]
 "fastapi_cachex/backends/memcached.py" = ["PLC0415"]  # Optional dependency
 "fastapi_cachex/backends/redis.py" = ["PLR0913", "PLC0415"]  # Optional dependency, Redis config
 "fastapi_cachex/proxy.py" = ["PLW0603"]  # Global backend management by design
+"fastapi_cachex/session/manager.py" = ["PLR0915"]  # Session/security validation branches needed
 
 [tool.ruff.format]
 docstring-code-format = true