fix(auth): add lax no cover to Protocol stubs for Python 3.14 coverage

Author: nypdmax

src/mcp/client/auth/_oauth_401_flow.py

@@ -35,11 +35,11 @@ class _OAuth401FlowProvider(Protocol):
     """Provider interface for oauth_401_flow_generator (OAuthClientProvider duck type)."""
 
     @property
-    def context(self) -> Any: ...
+    def context(self) -> Any: ...  # pragma: lax no cover
 
-    async def _perform_authorization(self) -> httpx.Request: ...
+    async def _perform_authorization(self) -> httpx.Request: ...  # pragma: lax no cover
 
-    async def _handle_token_response(self, response: httpx.Response) -> None: ...
+    async def _handle_token_response(self, response: httpx.Response) -> None: ...  # pragma: lax no cover
 
 
 logger = logging.getLogger(__name__)

src/mcp/client/auth/multi_protocol.py

@@ -127,9 +127,9 @@ def _credentials_to_storage(credentials: AuthCredentials) -> AuthCredentials | O
 class _OAuthTokenOnlyStorage(Protocol):
     """OAuthToken-only storage contract (wrapped by OAuthTokenStorageAdapter)."""
 
-    async def get_tokens(self) -> OAuthToken | None: ...
+    async def get_tokens(self) -> OAuthToken | None: ...  # pragma: lax no cover
 
-    async def set_tokens(self, tokens: OAuthToken) -> None: ...
+    async def set_tokens(self, tokens: OAuthToken) -> None: ...  # pragma: lax no cover
 
 
 class OAuthTokenStorageAdapter:

src/mcp/client/auth/protocol.py

@@ -15,15 +15,23 @@
 class DPoPStorage(Protocol):
     """Storage interface for DPoP key pairs."""
 
-    async def get_key_pair(self, protocol_id: str) -> Any: ...
-    async def set_key_pair(self, protocol_id: str, key_pair: Any) -> None: ...
+    async def get_key_pair(self, protocol_id: str) -> Any: ...  # pragma: lax no cover
+
+    async def set_key_pair(self, protocol_id: str, key_pair: Any) -> None: ...  # pragma: lax no cover
 
 
 class DPoPProofGenerator(Protocol):
     """DPoP proof generator interface."""
 
-    def generate_proof(self, method: str, uri: str, credential: str | None = None, nonce: str | None = None) -> str: ...
-    def get_public_key_jwk(self) -> dict[str, Any]: ...
+    def generate_proof(  # pragma: lax no cover
+        self,
+        method: str,
+        uri: str,
+        credential: str | None = None,
+        nonce: str | None = None,
+    ) -> str: ...
+
+    def get_public_key_jwk(self) -> dict[str, Any]: ...  # pragma: lax no cover
 
 
 class ClientRegistrationResult(Protocol):

src/mcp/server/auth/dpop.py

@@ -56,8 +56,9 @@ async def check_and_store(self, jti: str, exp_time: float) -> bool:
 class DPoPNonceStore(Protocol):
     """Protocol for server-managed DPoP nonce (optional feature)."""
 
-    async def generate_nonce(self) -> str: ...
-    async def validate_nonce(self, nonce: str) -> bool: ...
+    async def generate_nonce(self) -> str: ...  # pragma: lax no cover
+
+    async def validate_nonce(self, nonce: str) -> bool: ...  # pragma: lax no cover
 
 
 class InMemoryJTIReplayStore: