Silence ty deprecation diagnostics and drop stale sampling doc mentions

tests/client/test_roots.py

@@ -16,7 +16,7 @@ def fastmcp_server():
 
     @mcp.tool
     async def list_roots(context: Context) -> list[str]:
-        result = await context.session.list_roots()
+        result = await context.session.list_roots()  # ty: ignore[deprecated]
         return [str(r.uri) for r in result.roots]
 
     return mcp
@@ -58,11 +58,9 @@ class TestClientRoots:
 
         async def roots_handler(ctx) -> list[Root]:
             calls.append(ctx)
-            return [Root(uri="file://from/handler")]  # ty: ignore[invalid-argument-type]
+            return [Root(uri="file://from/handler")]
 
-        async with Client(
-            fastmcp_server, mode="legacy", roots=roots_handler
-        ) as client:
+        async with Client(fastmcp_server, mode="legacy", roots=roots_handler) as client:
             result = await client.call_tool("list_roots", {})
 
         assert len(calls) == 1

tests/client/test_sampling.py

@@ -23,7 +23,7 @@ async def _sample(
     answering a legacy server, so the stand-in server reaches the SDK session
     directly.
     """
-    result = await context.session.create_message(
+    result = await context.session.create_message(  # ty: ignore[deprecated]
         messages=messages,
         system_prompt=system_prompt,
         max_tokens=512,
@@ -72,7 +72,9 @@ def fastmcp_server():
                 ),
                 SamplingMessage(
                     role="assistant",
-                    content=TextContent(type="text", text="How can I assist you today?"),
+                    content=TextContent(
+                        type="text", text="How can I assist you today?"
+                    ),
                 ),
             ],
         )

tests/server/providers/proxy/test_proxy_client.py

@@ -66,13 +66,13 @@ async def _backend_list_roots(context: Context) -> list[Root]:
     FastMCP's server API. These helpers reach the SDK session directly to stand
     in for a legacy upstream, which is the only thing the proxy relay forwards.
     """
-    result = await context.session.list_roots()
+    result = await context.session.list_roots()  # ty: ignore[deprecated]
     return result.roots
 
 
 async def _backend_sample(context: Context) -> str:
     """Issue a handshake-era `sampling/createMessage` from a backend server."""
-    result = await context.session.create_message(
+    result = await context.session.create_message(  # ty: ignore[deprecated]
         messages=[
             SamplingMessage(
                 role="user", content=TextContent(type="text", text="Hello, world!")

tests/server/test_protocol_eras.py

@@ -307,7 +307,7 @@ def test_removed_server_initiated_methods_are_absent(name):
 def test_server_sampling_handler_kwargs_are_rejected(kwarg):
     """The server-side sampling handler existed only to answer `ctx.sample()`."""
     with pytest.raises(TypeError, match="SEP-2577"):
-        FastMCP("gone", **{kwarg: None})
+        FastMCP("gone", **{kwarg: None})  # ty: ignore[invalid-argument-type]
 
 
 @pytest.mark.parametrize("mode", MODERN_MODES)