chore: Add ruff linting

Author: andrewginns

agents_mcp_usage/basic_mcp/basic_mcp_use/pydantic_mcp.py

@@ -1,5 +1,4 @@
 import asyncio
-import os
 
 import logfire
 from dotenv import load_dotenv

agents_mcp_usage/multi_mcp/eval_multi_mcp/evals_pydantic_mcp.py

@@ -10,7 +10,7 @@
 from pydantic_ai.mcp import MCPServerStdio
 from pydantic_ai.usage import UsageLimits
 from pydantic_evals import Case, Dataset
-from pydantic_evals.evaluators import Evaluator, EvaluatorContext, IsInstance, LLMJudge
+from pydantic_evals.evaluators import Evaluator, EvaluatorContext, LLMJudge
 
 from agents_mcp_usage.multi_mcp.mermaid_diagrams import (
     invalid_mermaid_diagram_easy,

pyproject.toml

@@ -18,11 +18,12 @@ dependencies = [
     "pydantic-ai-slim[mcp]>=0.1.3",
     "pydantic-evals[logfire]>=0.1.3",
     "python-dotenv>=1.1.0",
+    "ruff>=0.11.10",
 ]
 
 [tool.hatch.build.targets.wheel]
 packages = ["agents_mcp_usage"]
 
 [build-system]
 requires = ["hatchling"]
-build-backend = "hatchling.build"
+build-backend = "hatchling.build"