feat: dashboard login gate for public deployments (#148)

feat: usage stats page with time-series token tracking (#147)

feat: account management page with batch operations (#146)

fix: clear quota warnings when account is deleted (#100) (#102)

fix: make instructions optional in /v1/responses for client compatibility (#71) (#112)

feat: add sticky rotation strategy (#107) (#110)

feat: add POST /admin/refresh-models endpoint + plan routing integration tests (#104)

feat: add quota settings UI to dashboard (#101)

fix: server-side export filtering and JSON parse safety

feat: bulk account import/export with selective export (#82)