Show HN: Web CLI v0.2.4 – Added YAML/JSON validators with auto-fix

*New in v0.2.4:* - YAML Validator with auto-fix (tabs→spaces, indentation, colon-in-value quoting) - JSON Validator with jsonrepair (fixes trailing commas, comments, mismatched braces) - Monaco Editor (VS Code engine) with syntax highlighting - Diff view showing exactly what was fixed