P1-P3 admin cleanup: rank guard, SSRF guard, count caching, dead code removal, pagination rewrite

- P1: new src/lib/admin/rank-guard.ts with tryGuardRank/guardRank + RankGuardTarget/Result; extracted from users.ts; applied to admin-bans (create/lift + rank redirect) and admin-badges (caps + rank guard + error surfacing); import-url-safety.ts SSRF guard wired into clone save+icon fetch; logAudit await in help-tickets; antiddos mutations SETTINGS_EDIT; markAllAlertsRead NOTIFICATIONS_EDIT; rankError/saveError in all 25 message files; tests rew/new for bans/badges/rank-guard/import-url-safety

- P2: ticket-inbox merged pagination reworked to single UNION ALL SQL with LIMIT/OFFSET (avoids O(offset) materialization); getCachedAdminCount with cacheFiltered option applied to devops/errors/photos/items/guilds/help-tickets/moderation pages; admin-theme catches→?error=1+banner+25 locales; logger in silent catches (rare-values/writeable-boxes); catalog-items-loader CAST→plain equality; count caching helper extended with opt-in cacheFiltered

- P3: removed dead modules is-staff/notice/recent-furni-resync/log-filters plus load-user-sanctions/user-sanction-timeline; removed orphaned CATALOG_PAGE_COLUMNS re-export; removed getFurniIconUrl from studio-furni-icons

Build: lint 0, typecheck 0, 3480 tests pass, i18n:check exit 0, colors exit 0. Circular chunk warning (9452/10535/66463) is webpack code-splitting artifact; build succeeds.

src/lib/services/admin-stats.ts

@@ -4,23 +4,27 @@ import { db } from "@/lib/db";
 import { redisCache } from "@/lib/redis-cache";
 
 /**
- * Caches admin list totals when no filters are applied (no 'where' clause),
- * preventing heavy COUNT(*) table scans on every request for large tables.
- * Filtered queries bypass cache to ensure exact search result counts.
+ * Caches admin list totals, preventing heavy COUNT(*) table scans on every
+ * request for large tables.
+ *
+ * By default only the unfiltered (global) count is cached; filtered queries
+ * hit the DB so search result counts stay exact. Callers that read a stable,
+ * fixed-filter total (e.g. "open tickets") can opt into caching it too with
+ * `{ cacheFiltered: true }` and a cacheKey unique to that filter.
  */
 export async function getCachedAdminCount(
 	table: MySqlTable,
 	cacheKey: string,
 	where?: SQL | undefined,
+	options?: { cacheFiltered?: boolean },
 ): Promise<number> {
-	// Only cache the global count (where = undefined)
-	if (where) {
+	const run = async (): Promise<number> => {
 		const [row] = await db.select({ total: count() }).from(table).where(where);
 		return Number(row?.total ?? 0);
-	}
+	};
 
-	return await redisCache(`admin:count:${cacheKey}`, 60, async () => {
-		const [row] = await db.select({ total: count() }).from(table);
-		return Number(row?.total ?? 0);
-	});
+	if (!where || options?.cacheFiltered) {
+		return await redisCache(`admin:count:${cacheKey}`, 60, run);
+	}
+	return await run();
 }