Add pyright strict mode on the whole project (#1254)

tests/server/fastmcp/prompts/test_base.py

@@ -1,13 +1,9 @@
+from typing import Any
+
 import pytest
 from pydantic import FileUrl
 
-from mcp.server.fastmcp.prompts.base import (
-    AssistantMessage,
-    Message,
-    Prompt,
-    TextContent,
-    UserMessage,
-)
+from mcp.server.fastmcp.prompts.base import AssistantMessage, Message, Prompt, TextContent, UserMessage
 from mcp.types import EmbeddedResource, TextResourceContents
 
 
@@ -65,7 +61,7 @@ class TestRenderPrompt:
 
     @pytest.mark.anyio
     async def test_fn_returns_multiple_messages(self):
-        expected = [
+        expected: list[Message] = [
             UserMessage("Hello, world!"),
             AssistantMessage("How can I help you today?"),
             UserMessage("I'm looking for a restaurant in the center of town."),
@@ -160,7 +156,7 @@ class TestRenderPrompt:
     async def test_fn_returns_dict_with_resource(self):
         """Test returning a dict with resource content."""
 
-        async def fn() -> dict:
+        async def fn() -> dict[str, Any]:
             return {
                 "role": "user",
                 "content": {