feat: jwt cache, redis health, help-ticket admin, and write rate limits

Cut Auth.js DB load with cached jwtVersion checks, surface Redis in /api/health and deploy warnings, add admin help-center ticket reply UI, rate-limit API tickets/reactions/referral claims, and revoke PATs on sign-out-everywhere.

Co-authored-by: Cursor <[email protected]>

src/messages/en.json

@@ -1001,6 +1001,7 @@
 				"writeableBoxes": "Writeable boxes",
 				"photos": "Photos",
 				"tickets": "Tickets",
+				"helpTickets": "Help center tickets",
 				"events": "Events",
 				"polls": "Polls",
 				"banners": "Banners",
@@ -1523,6 +1524,41 @@
 				"colDate": "Date",
 				"meta": "by {user} · {count} msg · {category}"
 			},
+			"helpTickets": {
+				"title": "Help center tickets",
+				"subtitle": "Player tickets from /help/tickets",
+				"noTickets": "No open help center tickets",
+				"searchPlaceholder": "Search title, user or ID…",
+				"presetOpen": "Open",
+				"presetAll": "All",
+				"statusOpen": "Open",
+				"statusClosed": "Closed",
+				"colTicket": "Ticket",
+				"colStatus": "Status",
+				"colUser": "User",
+				"colCreated": "Created",
+				"colUpdated": "Updated",
+				"meta": "by {user} · {count} replies",
+				"backToList": "Back to list",
+				"threadTitle": "Conversation",
+				"staffBadge": "Staff",
+				"replyPlaceholder": "Reply as staff…",
+				"replySubmit": "Send reply",
+				"replyHint": "Ctrl+Enter to send.",
+				"closeSubmit": "Close ticket",
+				"reopenSubmit": "Reopen ticket",
+				"closedHint": "This ticket is closed.",
+				"actionsTitle": "Actions",
+				"requesterTitle": "Requester",
+				"detailsTitle": "Details",
+				"rankLabel": "Rank {rank}",
+				"messageCountLabel": "Messages",
+				"success": {
+					"replied": "Reply sent.",
+					"closed": "Ticket closed.",
+					"reopened": "Ticket reopened."
+				}
+			},
 			"cfh": {
 				"title": "Call for Help",
 				"subtitle": "In-game CFH / support tickets",
@@ -2393,6 +2429,7 @@
 					"eventTypes": "Event types",
 					"polls": "Polls",
 					"tickets": "Tickets",
+					"helpTickets": "Help center tickets",
 					"templates": "Templates",
 					"directory": "Directory",
 					"multiAccounts": "Multi-accounts",