Add descriptions to listed rules

src/pygerber/console/gerber.py

@@ -563,9 +563,16 @@ def _parse_rules(rules: list[str]) -> Iterable[str]:
 
 
 @gerber.command("list-lint-rules")
-def list_lint_rules() -> None:
+@click.option(
+    "-q", "--quiet", is_flag=True, help="Print only rule names without descriptions."
+)
+def list_lint_rules(*, quiet: bool) -> None:
     """List available linting rules."""
     from pygerber.gerber.linter.rules import RULE_REGISTRY
 
     for rule_id in RULE_REGISTRY:
-        click.echo(rule_id)
+        if quiet:
+            click.echo(rule_id)
+        else:
+            rule = RULE_REGISTRY[rule_id]()
+            click.echo(f"{rule_id}: {rule.get_violation_title()}")

src/pygerber/gerber/linter/rules/GRB001.py

@@ -15,8 +15,9 @@ class GRB001(Rule):
 
     def get_violation_title(self) -> str:
         """Return a title of message that describes the rule violation."""
-        assert self.last_node is not None
-        return f"""Redundant {self.last_node.__qualname__} command."""
+        if self.last_node is not None:
+            return f"""Redundant {self.last_node.__qualname__} command."""
+        return "Redundant G01/G02/G03 command."
 
     def get_violation_description(self) -> str:
         """Return a description of the rule violation."""