fix: resolve CI linting and type checking issues

app/cmdparse/config.py

@@ -0,0 +1,88 @@
+from typing import Dict, Any, Optional
+from pathlib import Path
+import yaml
+
+
+def find_config_file(config_path: Optional[str] = None) -> Optional[Path]:
+    """Find config file in specified path or default locations."""
+    if config_path:
+        path = Path(config_path)
+        if path.exists():
+            return path
+        return None
+
+    config_locations = [
+        Path.home() / '.cmdparse.yaml',
+        Path.home() / '.cmdparse' / 'config.yaml',
+        Path.cwd() / '.cmdparse.yaml',
+        Path.cwd() / 'cmdparse.yaml',
+    ]
+
+    for location in config_locations:
+        if location.exists():
+            return location
+
+    return None
+
+
+def load_config(config_path: Optional[str] = None) -> Dict[str, Any]:
+    """Load configuration from YAML file."""
+    config_file = find_config_file(config_path)
+
+    if config_file is None:
+        return {'parsers': []}
+
+    try:
+        with open(config_file, 'r') as f:
+            config = yaml.safe_load(f)
+            return config if config else {'parsers': []}
+    except Exception as e:
+        print(f"Warning: Could not load config file: {e}")
+        return {'parsers': []}
+
+
+def get_builtin_config_path() -> Path:
+    """Get the path to the built-in config file."""
+    return Path(__file__).parent.parent / 'config' / 'default_parsers.yaml'
+
+
+def load_builtin_config() -> Dict[str, Any]:
+    """Load built-in parser configurations."""
+    config_path = get_builtin_config_path()
+
+    if config_path.exists():
+        try:
+            with open(config_path, 'r') as f:
+                config = yaml.safe_load(f)
+                return config if config else {'parsers': []}
+        except Exception:
+            return {'parsers': []}
+
+    return {'parsers': []}
+
+
+def get_custom_parser(config: Dict[str, Any], pattern_name: str) -> Optional[Dict[str, Any]]:
+    """Get a custom parser definition from config."""
+    parsers = config.get('parsers', [])
+
+    for parser in parsers:
+        if parser.get('name') == pattern_name:
+            return parser
+
+    return None
+
+
+def get_all_parsers() -> Dict[str, Any]:
+    """Get all custom parsers merged with built-in."""
+    builtin = load_builtin_config()
+    custom = load_config()
+
+    all_parsers = builtin.get('parsers', []).copy()
+    custom_parsers = custom.get('parsers', [])
+
+    custom_names = {p.get('name') for p in custom_parsers}
+    filtered_builtin = [p for p in all_parsers if p.get('name') not in custom_names]
+
+    return {
+        'parsers': filtered_builtin + custom_parsers
+    }