fix(tickets): status filter dropdown and CW resource assignment

- Status filter: aggregate statuses across all boards (deduped by name)
  when no board is selected. Backend accepts status_name and filters by
  status/name so the same status matches across boards.
- Resource assignment: CW has no /service/tickets/{id}/members endpoint —
  assignees live in the ticket's comma-separated `resources` string field.
  Rewrote list/add/remove to read/PATCH that field via member identifier.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/api/tickets.ts

@@ -35,6 +35,7 @@ export const ticketsApi = {
     query?: string
     board_id?: number | null
     status_id?: number | null
+    status_name?: string | null
     include_closed?: boolean
     assigned_to_me?: boolean
     unassigned?: boolean