feat(ticket): add transfer, priority, lock/unlock, stats, message recording

- TransferButton: transfer ticket to another staff member
- PriorityButton: set ticket priority (low/normal/high/urgent)
- LockButton: lock/unlock ticket (toggle channel permissions)
- StatsButton: show ticket info (category, user, claimed, priority, messages)
- on_message listener: records all messages for transcript
- TicketData: added locked, priority fields

tickets/data.py

@@ -9,6 +9,13 @@ class TicketStatus(str, Enum):
     CLOSED = "closed"
 
 
+class TicketPriority(str, Enum):
+    LOW = "low"
+    NORMAL = "normal"
+    HIGH = "high"
+    URGENT = "urgent"
+
+
 @dataclass
 class TicketCategory:
     id: str
@@ -54,6 +61,8 @@ class TicketData:
     closed_at: str | None = None
     closed_by: int | None = None
     claimed_by: int | None = None
+    locked: bool = False
+    priority: TicketPriority = TicketPriority.NORMAL
     messages: list[TicketMessage] = field(default_factory=list)
     reason: str = ""
 
@@ -68,6 +77,8 @@ class TicketData:
             "closed_at": self.closed_at,
             "closed_by": self.closed_by,
             "claimed_by": self.claimed_by,
+            "locked": self.locked,
+            "priority": self.priority.value,
             "messages": [
                 {
                     "author_id": m.author_id,
@@ -86,6 +97,7 @@ class TicketData:
     def from_dict(cls, data: dict) -> TicketData:
         messages = [TicketMessage(**m) for m in data.pop("messages", [])]
         data["status"] = TicketStatus(data.get("status", "open"))
+        data["priority"] = TicketPriority(data.get("priority", "normal"))
         data.pop("transcript_path", None)
         data.pop("rating", None)
         data.pop("feedback", None)