fix(mission): 생성 로딩 지연 단축

[jongse7]

📝 작업 내용 요약

• 목업 미션 생성 화면의 최소 로딩 시간을 7초로 고정했습니다.
• 백엔드가 제공한 폴링 간격을 사용하고, 유효하지 않은 값은 5초 기본값으로 안전하게 대체합니다.
• 여러 줄 미션 제목도 생성 결과 카드에서 왼쪽 정렬되도록 수정했습니다.

✅ 체크리스트

• develop 브랜치의 최신 코드를 pull 받았나요?
• 빌드가 통과했나요?
• vitest 테스트가 통과했나요?
• Playwright e2e가 통과했나요?

🤖 AI 리뷰

Claude 리뷰 (Codex 구현)

🟢 승인 가능

• 7초 타이머는 cleanup에서 정리되고, 완료 상태와 초안 준비 상태를 함께 확인합니다.
• 서버의 비정상 폴링 간격은 5초 기본값으로 대체하도록 보완했습니다.
• 생성 결과 카드의 Toggle에 text-left를 적용했습니다.

💬 기타 코멘트

• 요청한 리뷰어 rr은 이 저장소에 리뷰 요청 권한이 없어 리뷰어 없이 생성했습니다.

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Project	Deployment	Actions	Updated (UTC)
28th-web-team-3-fe-web-dev	Ready	Preview	Aug 22, 2026 3:53am

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
28th-web-team-3-fe-admin	Ignored		Aug 22, 2026 3:53am

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📥 Commits

Reviewing files that changed from the base of the PR and between 3ca212f and cdc5e11.

📒 Files selected for processing (5)

• apps/web/app/mission/_components/mission-creation-result.test.tsx
• apps/web/app/mission/_components/mission-creation-result.tsx
• apps/web/app/mission/_components/mission-loading.tsx
• apps/web/app/mission/new/loading/page.test.tsx
• apps/web/lib/queries/mission-generation.ts

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