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/actions/admin-antiddos.ts

@@ -140,7 +140,7 @@ async function persistSettings(config: AntiddosConfig): Promise<void> {
  * override the proxy reads, so the change is live within the proxy cache TTL.
  */
 export async function saveAntiddosSettings(formData: FormData): Promise<void> {
-	const staff = await requirePermission(PERMS.SETTINGS_VIEW);
+	const staff = await requirePermission(PERMS.SETTINGS_EDIT);
 	const config = configFromForm(formData);
 
 	try {
@@ -165,7 +165,7 @@ export async function saveAntiddosSettings(formData: FormData): Promise<void> {
  * DB-persisted settings. The gate immediately falls back to env ANTI_DDOS_*.
  */
 export async function resetAntiddosSettings(): Promise<void> {
-	const staff = await requirePermission(PERMS.SETTINGS_VIEW);
+	const staff = await requirePermission(PERMS.SETTINGS_EDIT);
 
 	try {
 		if (redis) await redis.del(OVERRIDE_KEY);
@@ -186,7 +186,7 @@ export async function resetAntiddosSettings(): Promise<void> {
 
 /** Remove a single IP from the temporary DDoS block list. */
 export async function unbanAntiddosIp(formData: FormData): Promise<void> {
-	const staff = await requirePermission(PERMS.SETTINGS_VIEW);
+	const staff = await requirePermission(PERMS.SETTINGS_EDIT);
 	const ip = str(formData.get("ip")).trim();
 	if (!ip) return;
 
@@ -213,7 +213,7 @@ export async function unbanAntiddosIp(formData: FormData): Promise<void> {
 
 /** Remove an automatic Cloudflare edge block for a tracked IP. */
 export async function removeCloudflareRule(formData: FormData): Promise<void> {
-	const staff = await requirePermission(PERMS.SETTINGS_VIEW);
+	const staff = await requirePermission(PERMS.SETTINGS_EDIT);
 	const ip = str(formData.get("ip")).trim();
 	if (!ip) return;
 
@@ -233,7 +233,7 @@ export async function removeCloudflareRule(formData: FormData): Promise<void> {
 
 /** Test the configured Cloudflare API credentials against the zone. */
 export async function verifyCloudflareConfiguration(): Promise<void> {
-	const staff = await requirePermission(PERMS.SETTINGS_VIEW);
+	const staff = await requirePermission(PERMS.SETTINGS_EDIT);
 	const status = await verifyCloudflareConnection();
 	await setLastCloudflareVerify(status);
 	logger.info("Cloudflare API configuration verified", {