- Updated `new-api` skill `SKILL.md` to document the centralized v1.go route registration and domain-driven sub-routing patterns
- Updated `AGENTS.md` instructions with the new router subpackages (`root`, `v1`) and route file layout guidelines
- Updated AGENTS.md, new-api SKILL.md, and new-async-task SKILL.md to remove references to the deleted global internal/service/ package.
- Documented feature-based local logics/services design within internal/apps/<module>/.
- Updated package comments in internal/diskcache to point to pkg/cache/disk.
ryan