Self-Evolving Skill adds Five-Gate governance

This is a smart correction to the usual “more memory = better agents” hype: the interesting part is not teaching skills to evolve, but teaching them when not to.

• –The Five Gates turn skill memory into a governed knowledge base, not a running dump of every past interaction
• –The routing-table approach is practical for real agents because it protects scarce context window instead of blindly loading everything
• –The reference implementation grounds the idea in a concrete MySQL investigation skill, which makes the pattern more useful than a purely theoretical repo
• –Its strongest claim is cultural as much as technical: mature agent skills should converge and stabilize, not chase perpetual self-modification
• –The main limitation is scope—it is tailored to prompt-layer skills and reusable domain knowledge, not full autonomous agent systems or model-level learning