feat: add missing translations across all locales

Add 692 translation keys across 21 locale files, covering admin actions, moderation, radio, catalog, and public UI strings.

src/messages/da.json

@@ -910,7 +910,8 @@
 				"tradeLog": "Trade log",
 				"tools": "Tools",
 				"guilds": "Guilds",
-				"itemsBase": "Items base"
+				"itemsBase": "Items base",
+				"adminMenu": "Admin menu"
 			},
 			"dashboard": {
 				"title": "Dashboard",
@@ -1121,7 +1122,8 @@
 				"distinctPhotographers": "Distinct photographers on this page",
 				"total": "Total photos",
 				"recentPhotos": "Recent photos",
-				"pageOf": "Page {page} of {last} · {total} total"
+				"pageOf": "Page {page} of {last} · {total} total",
+				"purgeHint": "Delete removes the database row and best-effort deletes a matching file under /public. External CDN URLs are not purged."
 			},
 			"users": {
 				"title": "Brugere",
@@ -2003,14 +2005,24 @@
 					"typeStaff": "Kun personale",
 					"urgent": "Haster",
 					"send": "Send alert",
-					"sending": "Sender..."
+					"sending": "Sender...",
+					"description": "Broadcasts via RCON <code>hotelalert</code> to online users."
 				},
 				"colId": "ID",
 				"colTitle": "Titel",
 				"colSentBy": "Sent by",
 				"colType": "Type",
 				"colDate": "Dato",
-				"colActions": "Handlinger"
+				"colActions": "Handlinger",
+				"noAlerts": "No recent alerts",
+				"alertsShown": "Shown",
+				"critical": "Critical",
+				"warnings": "Warnings",
+				"unread": "Unread",
+				"markAllRead": "Mark all read",
+				"colWhen": "When",
+				"colSeverity": "Severity",
+				"colMessage": "Message"
 			},
 			"logs": {
 				"title": "Staff Activities",
@@ -2938,6 +2950,24 @@
 				"modNavInbox": "Inbox",
 				"modNavDesk": "CMS desk",
 				"modNavHelp": "Help center"
+			},
+			"menu": {
+				"title": "Admin menu",
+				"subtitle": "Reorder and hide sidebar groups and links. Routes and permissions stay in code.",
+				"save": "Save menu",
+				"saving": "Saving…",
+				"saved": "Admin menu saved.",
+				"saveFailed": "Could not save admin menu.",
+				"reset": "Reset to default",
+				"viewOnly": "You can view the menu layout but need settings edit permission to change it.",
+				"hint": "Dashboard and this page stay visible. ACL still filters what each rank sees.",
+				"moveUp": "Move up",
+				"moveDown": "Move down",
+				"hideGroup": "Hide group",
+				"showGroup": "Show group",
+				"hideItem": "Hide item",
+				"showItem": "Show item",
+				"pinned": "Pinned"
 			}
 		},
 		"error": {