fix(provider): apply OAuth formatting and guard client cleanup

Apply the exact Ruff 0.15.22 CI formatting diff and defensively guard
optional HTTP client cleanup. Restore the unmodified CI workflow after
diagnostics; keep the pull request focused on provider OAuth support.

.github/workflows/code-format.yml

@@ -27,9 +27,8 @@ jobs:
       
     - name: Check code formatting with ruff
       run: |
-        uvx --from ruff==0.15.22 ruff format --diff .
+        uvx --from ruff==0.15.22 ruff format --check .
         
     - name: Check code style with ruff
-      if: success() || failure()
       run: |
         uvx --from ruff==0.15.22 ruff check .

astrbot/core/provider/oauth.py

@@ -176,7 +176,9 @@ class OAuth2Session:
             state = secrets.token_urlsafe(32)
             verifier = secrets.token_urlsafe(64)
             challenge = (
-                base64.urlsafe_b64encode(hashlib.sha256(verifier.encode("ascii")).digest())
+                base64.urlsafe_b64encode(
+                    hashlib.sha256(verifier.encode("ascii")).digest()
+                )
                 .rstrip(b"=")
                 .decode("ascii")
             )

examples/astrbot_plugin_oauth_provider/main.py

@@ -45,9 +45,10 @@ class OAuthProviderPlugin(Star):
         }
         settings["scopes"] = tuple(self.config.get("scopes", []))
         # Changing the supplier/client must never reuse another account's token.
-        self.storage_key = "oauth:" + hashlib.sha256(
-            json.dumps(settings, sort_keys=True).encode()
-        ).hexdigest()
+        self.storage_key = (
+            "oauth:"
+            + hashlib.sha256(json.dumps(settings, sort_keys=True).encode()).hexdigest()
+        )
         self.http = httpx.AsyncClient(proxy=self.config.get("proxy") or None)
         try:
             self.oauth = OAuth2Session(
@@ -98,7 +99,8 @@ class OAuthProviderPlugin(Star):
                 await self.oauth.close()
             if self.provider_class is not None:
                 unregister_provider_adapter(PROVIDER_TYPE, self.provider_class)
-            await self.http.aclose()
+            if self.http is not None:
+                await self.http.aclose()
             raise
 
     async def load_token(self) -> OAuth2Token | None: