feat(hooks): permission-driven gating via useHasPermission

Replace the rank-level family (useHasRankLevel + STAFF_LEVELS
constants + useIsRank) with a permission-driven family that reads
straight from the deployment's `permission_definitions` table — no
more hardcoded SecurityLevel/rank-id thresholds on the client. A new
rank in permission_ranks or a re-shuffling of permission_definitions
rank columns now propagates through the UI automatically.

Renderer-side wire shipped in companion commit
feat/react19-event-bus@159c5eb (UserPermissionsMapParser + Event,
SessionDataManager.getPermissionsSnapshot + USER_PERMISSIONS_UPDATED).

New public API in `useSessionSnapshots.ts`:
- useUserPermissions(): ReadonlyMap<string, number>  — full map
- useHasPermission(key): boolean                       — > 0 ⇒ true
- usePermissionValue(key): number                      — raw 1/2 or 0
- useIsAmbassador() now aliases useHasPermission('acc_ambassador')
- useUserRank() kept for PRESENTATIONAL use only (badge, prefix,
  prefix color) — documented as such in JSDoc; gating must use
  useHasPermission.

Dropped:
- src/api/nitro/session/RankLevels.ts (STAFF_LEVELS constants)
- useHasRankLevel / useIsRank exports (rank-based gating)

11 consumer migrations, each mapped to the right
`permission_definitions.permission_key`:

  - ToolbarView (mod-only chat-input button)        → acc_supporttool
  - ChooserWidgetView (room-object id column)       → acc_supporttool
  - CatalogClassicView (admin toggles)              → acc_catalogfurni
  - CatalogModernView (admin toggles)               → acc_catalogfurni
  - FurniEditorView (panel access)                  → acc_catalogfurni
  - CalendarView (force-open day)                   → acc_calendar_force
  - InfoStandWidgetFurniView (mod buildtools btn)   → acc_anyroomowner
  - AvatarInfoWidgetPetView (canPickUp)             → acc_anyroomowner
  - FurnitureMannequinView (controller mode)        → acc_anyroomowner
  - YouTubePlayerView (isMyRoom)                    → acc_anyroomowner
  - NavigatorRoomInfoView 'settings'                → acc_anyroomowner
  - NavigatorRoomInfoView 'staff_pick'              → acc_staff_pick

Test refresh:
- useUserRank still tested for the presentational shape.
- useHasPermission: true for non-zero, false for absent/zero.
- usePermissionValue: raw 1 / 2 / 0 (default).
- useUserPermissions: full map exposure.
- Runtime promote test: mutate the permissions map + dispatch
  USER_PERMISSIONS_UPDATED, assert useHasPermission flips false→true.
  Locks in the new reactive contract.

Mock unchanged (the test sets getPermissionsSnapshot via vi.mocked).

Verification: yarn typecheck clean, yarn lint:hooks clean, yarn test
214/214 (213 prior + 1 net new for useUserPermissions). Backward
compatible: older Arcturus deployments don't ship the map → empty
snapshot → every gate is false → mod UI hidden (safe default).

src/api/nitro/session/RankLevels.ts

@@ -1,29 +0,0 @@
-/**
- * Deployment-specific rank-level constants.
- *
- * Mirrors the `level` column of `permission_ranks` for the operator's
- * Arcturus instance. Defined in ONE place so widget code can express
- * intent via `useHasRankLevel(STAFF_LEVELS.MOD)` instead of bare
- * integers, and so a deployment that re-numbers its ranks (e.g. adds
- * a "Super Admin" at level 8) only has to update this file.
- *
- * Default seed (Arcturus-Morningstar-Extended ≥ 4.2.10):
- *   1 Member       | 2 VIP    | 3 X
- *   4 Support      | 5 Moderator | 6 Super Mod
- *   7 Administrator
- *
- * Update the constants here to match `permission_ranks.level` in your
- * deployment if you customised them.
- */
-export const STAFF_LEVELS = {
-    /** Member level — the floor for non-staff users. */
-    MEMBER: 1,
-    /** Lowest staff tier — Support agents. */
-    SUPPORT: 4,
-    /** Moderator (covers in-room moderation actions). */
-    MOD: 5,
-    /** Super Mod (extended moderation surface). */
-    SUPER_MOD: 6,
-    /** Administrator — full staff privileges. */
-    ADMIN: 7
-} as const;

src/api/nitro/session/index.ts

@@ -16,6 +16,5 @@ export * from './HasHabboVip';
 export * from './IsOwnerOfFloorFurniture';
 export * from './IsOwnerOfFurniture';
 export * from './IsRidingHorse';
-export * from './RankLevels';
 export * from './StartRoomSession';
 export * from './VisitDesktop';