[Feature] dateFormat 추가

[wonill]

✅ PR Checklist

• 불필요한 코드 중복이 없습니다.
• 민감한 정보를 포함하지 않았습니다.
• 불필요한 콘솔 로그나 주석을 포함하지 않았습니다.
• 컴포넌트 key값에 고유한 값을 할당했습니다.

📝 Summary

🔗 ISSUE : #122

날짜 형식 통일을 위해 dateFormat을 추가했습니다.

🖼️ Screenshots

[github-actions]

⚡ Lighthouse Reports

http://localhost:4173/

Performance Metrics

Category	Score
Performance	🟠 82
Accessibility	🟢 97
Best Practices	🟠 83
SEO	🟢 100

Detailed Metrics

Metric	Value
First Contentful Paint	🟠 2.4 s
Largest Contentful Paint	🔴 4.3 s
Total Blocking Time	🟢 30 ms
Cumulative Layout Shift	🟢 0.004
Speed Index	🟢 2.4 s

Security Checks

Check	Status	Details
CSP-XSS	⚠️	Ensure CSP is effective against XSS attacks

http://localhost:4173/log

Performance Metrics

Category	Score
Performance	🟠 86
Accessibility	🟢 95
Best Practices	🟠 83
SEO	🟢 100

Detailed Metrics

Metric	Value
First Contentful Paint	🟠 2.3 s
Largest Contentful Paint	🟠 3.8 s
Total Blocking Time	🟢 20 ms
Cumulative Layout Shift	🟢 0.003
Speed Index	🟢 2.3 s

Security Checks

Check	Status	Details
CSP-XSS	⚠️	Ensure CSP is effective against XSS attacks

http://localhost:4173/login

Performance Metrics

Category	Score
Performance	🟠 82
Accessibility	🟢 97
Best Practices	🟠 83
SEO	🟢 92

Detailed Metrics

Metric	Value
First Contentful Paint	🟠 2.9 s
Largest Contentful Paint	🔴 4.0 s
Total Blocking Time	🟢 0 ms
Cumulative Layout Shift	🟢 0.004
Speed Index	🟢 2.9 s

Security Checks

Check	Status	Details
CSP-XSS	⚠️	Ensure CSP is effective against XSS attacks

http://localhost:4173/mypage

Performance Metrics

Category	Score
Performance	🟠 75
Accessibility	🟢 97
Best Practices	🟠 83
SEO	🟢 92

Detailed Metrics

Metric	Value
First Contentful Paint	🔴 3.2 s
Largest Contentful Paint	🔴 5.1 s
Total Blocking Time	🟢 0 ms
Cumulative Layout Shift	🟢 0.001
Speed Index	🟢 3.2 s

Security Checks

Check	Status	Details
CSP-XSS	⚠️	Ensure CSP is effective against XSS attacks