Add a New Validation Rule and Flag

Use this skill when you need to add a new validation rule to the dart_skills_lint package, expose it as a toggleable CLI flag, and verify its behavior.

🛠️ Step-by-Step Implementation

1. Create the Rule Class

Create a new file in lib/src/rules/ extending SkillRule.

[!TIP] If your rule expects a specific structure in the skill's YAML frontmatter (e.g., inside metadata), document this structure clearly in the class Dart docstring.

// lib/src/rules/my_new_rule.dart