UpdateUsernameAdmin already skipped the reserved-word check in the
availability lookup, but UserStore.UpdateUsername's own write path
(replacePeerUsernameTx / CollectibleUsernameStore.SetEditableUsername)
enforces the same operator blocklist a second time, independently and
unconditionally. That second check is what was still rejecting an admin
handing out a word they'd deliberately reserved, with "username occupied".
Add UpdateUsernameAdmin/SetEditableUsernameAdmin bypass variants down the
write path (postgres and memory) and route users.Service's actual write
through them when the availability check was already bypassed.
account.checkUsername / channels.checkUsername / bots.checkUsername said a
reserved name was available and only updateUsername rejected it. Add the
blocklist check to peerUsernameAvailable (covers account + channel, both
backends) and to bots.Service.CheckUsername, so the client shows "username is
taken" immediately.
Keep bot credentials out of durable command results, fail bot deletion closed when session revocation fails, reject invalid scam/fake states at every write boundary, and make direct collectible grants a single replayable PostgreSQL aggregate.
Also lock admin gift sender/message limits and add regression coverage for rollback, replay, moderation constraints, and credential redaction.
Admin console additions (Layer 228):
- Give Gifts: dedicated tab with sorted Lottie/TGS gift picker + inline form; grant any catalog gift to a user/channel from 777000 (no charge)
- Upgraded/collectible delivery: mint a unique gift with admin-selected model/pattern/backdrop and custom number, or random/auto (DB FK + UNIQUE(gift_id,num) enforce invariants)
- SCAM/FAKE flags for users/channels (migration 0136) with configurable profile warning (TELESRV_SCAM_WARNING/TELESRV_FAKE_WARNING)
- Support toggle, force channel settings incl. gigagroup (migration 0137), username management, cosmetic color/emoji-status
- Emoji admin tab (custom emoji list + document IDs + Lottie/TGS preview)
- Bot management; soft UI / dark theme
Wired through Router -> admin.Service -> adminapi -> BFF -> React panel (en/zh/ru).
