Remove the entire code surface of the aiapp (AI application: create/query/modify) product:
- Delete internal/helpers/aiapp.go and its test (the init() static command registration)
- Drop aiapp from generator coverage targets and knownRegistryProducts
- Remove aiapp from the operations-analyst persona services in personas.yaml
- Delete skills (mono references/products/aiapp.md + dingtalk-aiapp multi skill + script)
- Update README/README_zh product tables and counts (19->18 products, 20->19 multi skills) and run_skill_tests mapping
- Add a Removed entry to CHANGELOG
The service-discovery side (envelope/discovery.pre.json, Portal-synced and gitignored) removes the aiapp server block separately.
修雨