style: apply Black formatting to all Python files

Add [tool.black] config to pyproject.toml and Black hook to
.pre-commit-config.yaml (rev 26.3.1), then auto-format all Python
source and test files with line-length=100, target-version=py310.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

python/commands/board/__init__.py

@@ -12,7 +12,8 @@ from .layers import BoardLayerCommands
 from .outline import BoardOutlineCommands
 from .view import BoardViewCommands
 
-logger = logging.getLogger('kicad_interface')
+logger = logging.getLogger("kicad_interface")
+
 
 class BoardCommands:
     """Handles board-related KiCAD operations"""
@@ -75,8 +76,8 @@ class BoardCommands:
         """Get a 2D image of the PCB"""
         self.view_commands.board = self.board
         return self.view_commands.get_board_2d_view(params)
-
-    def get_board_extents(self, params: Dict[str, Any]) -> Dict[str, Any]:
-        """Get the bounding box extents of the board"""
-        self.view_commands.board = self.board
-        return self.view_commands.get_board_extents(params)
+
+    def get_board_extents(self, params: Dict[str, Any]) -> Dict[str, Any]:
+        """Get the bounding box extents of the board"""
+        self.view_commands.board = self.board
+        return self.view_commands.get_board_extents(params)