# AGENTS

## Update Discipline

- Every shipped feature change must be recorded in the in-app update log page at `/changelog`.
- Every shipped feature change must also be recorded in [docs/CHANGELOG.md](/root/auto/tennis/docs/CHANGELOG.md).
- When online smoke tests are run, record whether the public site is already serving the new build or still on an older asset revision.
- Each update log entry must include:
  - release date
  - feature summary
  - tested modules or commands
  - corresponding repository version identifier
    - prefer the git short commit hash
- After implementation, run the relevant tests before pushing.
- Only record an entry as shipped after the related tests pass.
- When a feature is deployed successfully, append the update entry before or together with the repository submission so the changelog stays in sync with the codebase.

## Session Policy

- Username login must support multiple active sessions across multiple devices.
- New logins must not invalidate prior valid sessions for the same user.
- Session validation should be tolerant of older token payloads where optional display fields are absent.

## Timezone Policy

- User-facing time displays should use `Asia/Shanghai`.
- Daily aggregation keys and schedule-related server calculations should also use `Asia/Shanghai`.