Repo code maintenance skill package entry. Routes to sub-skills: py-improve (Python) / doc-reorg (docs + directories) / db-tweak (PostgreSQL) / vue-improve (Vue 3) / config-base (toolchain) / evolve (pitfall distillation). Use when the maintenance request is ambiguous and no single sub-skill clearly matches. Triggers: repo-medic, code maintenance, meta skill, project upkeep, evolve, pitfall distillation
