Fix ruff linting errors

- Break long line in docstring (line 269)
- Remove unused variable and import in test_resources.py

Author: AI

src/skillz/_server.py

@@ -266,7 +266,8 @@ def _collect_resources(self, directory: Path) -> tuple[Path, ...]:
         """Collect all files in skill directory except SKILL.md.
 
         SKILL.md is only returned from the tool, not as a resource.
-        All other files in the skill directory and subdirectories are resources.
+        All other files in the skill directory and subdirectories are
+        resources.
         """
         root = directory.resolve()
         skill_md_path = root / SKILL_MARKDOWN

tests/test_resources.py

@@ -3,7 +3,7 @@
 from pathlib import Path
 
 from skillz import SkillRegistry
-from skillz._server import register_skill_resources, build_server
+from skillz._server import register_skill_resources
 
 
 def write_skill_with_resources(
@@ -44,7 +44,6 @@ def test_resource_metadata_follows_mcp_spec(tmp_path: Path) -> None:
     registry.load()
 
     skill = registry.get("testskill")
-    server = build_server(registry)
 
     # Get resource metadata
     from fastmcp import FastMCP