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/prisma/mapHrProjects.ts

@@ -41,7 +41,6 @@ export interface MappedTask {
   issueNote: string | null;
   startDate: Date | null;
   dueDate: Date | null;
-  keywords: string | null;
   showDate: boolean;
   showDescription: boolean;
   showStatus: boolean;
@@ -194,7 +193,6 @@ export function mapHrProjectToTask(p: HrProject, quarter = '2026-Q2'): MappedTas
     issueNote: pickIssueNote(p),
     startDate: parseDate(p.startDate),
     dueDate: parseDate(p.endDate),
-    keywords: p.keywords?.length ? p.keywords.join(', ') : null,
     showDate: visible,
     showDescription: visible,
     showStatus: visible,

backend/prisma/migrations/20260608120000_remove_task_keywords/migration.sql

@@ -0,0 +1,3 @@
+-- 키워드 필드 제거 (데이터 삭제 후 컬럼 drop)
+UPDATE "tasks" SET "keywords" = NULL WHERE "keywords" IS NOT NULL;
+ALTER TABLE "tasks" DROP COLUMN IF EXISTS "keywords";

backend/prisma/schema.prisma

@@ -80,7 +80,6 @@ model Task {
   showStatus      Boolean @default(true)
   showIssue       Boolean @default(true)
   showProgress    Boolean @default(true)
-  keywords        String?
   creatorId   String
   assigneeId  String?
   pmMemberId  String?