fix: prevent import-time crash when ~/.kicad-mcp/ is not writable

Configuring logging at module import time hard-failed in environments
without write access to the user's home directory (sandboxed pytest
runners, restricted CI containers, read-only filesystems). The
unhandled OSError/PermissionError aborted module import and cascaded
into ~100 test failures during collection.

Wrap the FileHandler setup in try/except and fall back to console-only
logging when the log directory cannot be created. Production behavior
is unchanged - file logging in ~/.kicad-mcp/logs is still used
whenever the directory is writable.

Also picks up an isort-driven import reorder applied by the project's
pre-commit hook.

python/kicad_interface.py

@@ -15,24 +15,32 @@ import traceback
 from pathlib import Path
 from typing import Any, Dict, List, Optional, Tuple
 
+from annotations import AnnotationLoader
 from resources.resource_definitions import RESOURCE_DEFINITIONS, handle_resource_read
 
 # Import tool schemas, resource definitions, and IPC API annotations
 from schemas.tool_schemas import TOOL_SCHEMAS
-from annotations import AnnotationLoader
 
 _annotation_loader = AnnotationLoader()
 
 # Configure logging
-log_dir = os.path.join(os.path.expanduser("~"), ".kicad-mcp", "logs")
-os.makedirs(log_dir, exist_ok=True)
-log_file = os.path.join(log_dir, "kicad_interface.log")
-
-logging.basicConfig(
-    level=logging.DEBUG,
-    format="%(asctime)s [%(levelname)s] %(message)s",
-    handlers=[logging.FileHandler(log_file)],
-)
+# Try to set up a file handler in ~/.kicad-mcp/logs. If that directory isn't
+# writable (e.g. sandboxed test environments, restricted CI runners), fall
+# back to console-only logging so importing this module never crashes.
+try:
+    log_dir = os.path.join(os.path.expanduser("~"), ".kicad-mcp", "logs")
+    os.makedirs(log_dir, exist_ok=True)
+    log_file = os.path.join(log_dir, "kicad_interface.log")
+    logging.basicConfig(
+        level=logging.DEBUG,
+        format="%(asctime)s [%(levelname)s] %(message)s",
+        handlers=[logging.FileHandler(log_file)],
+    )
+except (OSError, PermissionError):
+    logging.basicConfig(
+        level=logging.DEBUG,
+        format="%(asctime)s [%(levelname)s] %(message)s",
+    )
 logger = logging.getLogger("kicad_interface")
 
 # Log Python environment details