Adds /admin-users CRUD on the ops backend, covering listing, plan/role/KOL
toggles, subscription expiry, status flips and password resets, with a
configurable default plan code. The ops console exposes a new top-level
"用户管理" view and reorganises the sidebar so 操作员管理 and 审计日志
move under a "系统设置" group; AccountsView is renamed accordingly.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Stand up an internal ops-api service with operator account, auth, and
audit log subsystems backed by a dedicated migrations_ops migration set.
Wire Makefile targets and the migrate Dockerfile stage so the new schema
ships alongside the existing tenant + monitoring databases.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>