v4.11.0 - Clean Code & Registry Stability

Quality improvements: Clean Code principles and deterministic builds.

Changed

Updated with Robert C. Martin's "Clean Code" principles:

Systematic Coverage: Meaningful names, functions, comments, formatting, objects, error handling, unit tests, and classes
F.I.R.S.T. Test Principles: Fast, Independent, Repeatable, Self-Validating, Timely
Law of Demeter: Don't talk to strangers guidance
Critical Fix: Fixed invalid heading format (## ## When to Use → ## When to Use) that was blocking strict validation
Implementation Checklist: Practical checklist for clean code compliance
Code Smell Detection: Helps identify and remove anti-patterns

Fixed scripts/build-catalog.js for deterministic CI builds:

Uses SOURCE_DATE_EPOCH environment variable for reproducible timestamps
Falls back to current time if SOURCE_DATE_EPOCH is not set
Replaced localeCompare with explicit comparator for consistent sorting across different environments
Impact: Eliminates CI validation failures caused by timestamp drift

@jackjin1997 - Clean Code skill update and registry fixes (PR #69, forged at ClawForge)

Upgrade: git pull origin main to fetch the latest improvements.