A way for staff/DOC to force disband businesses/change other details in game

Code context — No business.admin.* firm command surface exists (only business.admin.reload). Service methods present: disbandFirm (proprietor-gated), updateProprietor(firmId, playerId) (internal, ungated — callers must gate), updateFirmHq/Discord (ADMIN-gated). Missing: rename — FirmMapper has create/update/archive but no name-change method.

Approach: add a FirmCommands @Route("admin disband|rename|set proprietor …") group gated on a new business.admin.* perm that bypasses the proprietor checks; reuse disbandFirm/updateProprietor, and add a new renameFirm service+mapper method routed through NameValidator + a uniqueness check (mirroring createFirm).

Would be nice if we could rename firms with this one?

Implemented on develop (commit 7d7f8ed).

New /firm admin … command group, each route gated on a business.admin.* node (not registered in plugin.yml, like the rest of the fine-grained nodes — grant via LuckPerms). All bypass proprietor/firm-role checks:

Service layer

• Force-disband reuses the real disband mechanics — extracted disbandInternal(firm) (drains balances to the proprietor + archives) so the proprietor-gated and admin paths share it; admin path skips only the isProprietor check. Idempotent (already-disbanded → rejected).
• rename is the genuinely new piece (FirmMapper had no name-change). renameFirm validates via the same rules as creation — extracted validateFirmName(...) shared with createFirm — and rejects collisions with a different firm (self-rename / case-change is allowed). Persists through updateFirm's existing conditional display_name set.
• set hq/discord/proprietor reuse the ungated mutators.

The admin firm arg tab-completes from firms with someone online (OnlineFirmName) but resolves any firm by name/id. <newname> is a single token, consistent with create.

Tests: 13 new cases in FirmServiceImplTest (admin disband bypass + guards, rename success/unknown/invalid/duplicate/self-rename, set hq/discord/proprietor, unknown-firm guard). Coverage gate (≥95%) green.

Bonus: dropped the stale "ampersand" wording from the firm-name validation message (PAR-53 removed & from the validator).