feat: quarter board theme, hub column, and team panel UX

Apply preview-style 4-dept layout with center hub, PM/assignee team status linking, task type label updates, and remove task keywords.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/scripts/sync-to-remote.ts

@@ -189,7 +189,6 @@ async function syncTasks(memberIdMap: Map<string, string>) {
       showStatus: task.showStatus,
       showIssue: task.showIssue,
       showProgress: task.showProgress,
-      keywords: task.keywords,
       pmMemberId,
       assigneeMemberIds,
     });