Enhance ticket management with dashboard actions and priority settings

- Introduced a new `runTicketDashboardActionJob` to handle ticket actions (close, claim, set priority) with Discord side effects.
- Added a priority dropdown in the ticket control panel, allowing users to set ticket urgency levels.
- Updated WebUI to display open tickets with options to claim, close, or adjust priority, enhancing user interaction.
- Improved localization for new ticket management features in both English and German.
- Documented changes in phase tracking to reflect the new ticket dashboard functionalities.

apps/webui/src/messages/en.json

@@ -694,6 +694,31 @@
       "idsPlaceholder": "One or more IDs, comma-separated",
       "addCategory": "Add category",
       "nameRequired": "A name is required.",
+      "openList": {
+        "title": "Open tickets",
+        "description": "Active tickets (open or claimed). Close, claim, or set priority — changes are applied in Discord.",
+        "refresh": "Refresh",
+        "empty": "No open tickets.",
+        "noSubject": "No subject",
+        "noCategory": "No category",
+        "categoryLine": "Category: {category}",
+        "claimedBy": "Claimed by {user}",
+        "openInDiscord": "Open in Discord",
+        "claim": "Claim",
+        "close": "Close",
+        "closed": "Ticket closed.",
+        "closeReasonPlaceholder": "Optional close reason…",
+        "status": {
+          "OPEN": "Open",
+          "CLAIMED": "Claimed"
+        },
+        "priority": {
+          "LOW": "Low",
+          "NORMAL": "Normal",
+          "HIGH": "High",
+          "URGENT": "Urgent"
+        }
+      },
       "errors": {
         "panelTimeout": "The bot did not confirm the ticket panel in time. It may still be posting — check the channel and bot permissions, then save again.",
         "panelNotPosted": "The ticket panel could not be created in the Discord channel. Check bot permissions (View Channel, Send Messages, Embed Links).",