feat: add user audit service

[samfert]

Summary

Adds a new UserAuditService to track and retrieve user audit logs in the User-Service microservice.

Changes

• Added UserAuditService.java with:
  • getAuditLogs(userId) - Retrieve audit logs for a specific user
  • hashAuditData(data) - Hash audit data for integrity verification
  • generateAuditId() - Generate unique audit entry IDs

[github-actions]

🤖 Devin AI Quality Gate Remediation Triggered

A SonarQube Quality Gate Remediation Specialist (Devin AI) has been assigned to fix all quality gate failures.

📊 Quality Gate Analysis

• Total Issues: 6
• Vulnerabilities: 1 🔴
• Bugs: 3 🐛
• Code Smells: 2 💨
• Security Hotspots: 0 🔥

🔗 Links

• 👀 Monitor Devin Session
• 📊 SonarQube Dashboard
• 🔧 GitHub Actions Run

---

Note: Devin will push a fix to this branch. The workflow will automatically re-run to validate.

[github-actions]

🤖 Devin Triggered

Devin has been assigned to fix the quality gate failures.

📊 Quality Gate Analysis

• Total Issues: 6
• Vulnerabilities: 1 🔴
• Bugs: 3 🐛
• Code Smells: 2 💨
• Security Hotspots: 0 🔥

🔗 Links

• 👀 Monitor Devin Session
• 📊 SonarQube Dashboard
• 🔧 GitHub Actions Run

---

Note: Devin will push a fix to this branch. The workflow will automatically re-run to validate.

[github-actions]

🤖 Devin Triggered

Devin has been assigned to fix the quality gate failures.

📊 Quality Gate Analysis

• Total Issues: 6
• Vulnerabilities: 1 🔴
• Bugs: 3 🐛
• Code Smells: 2 💨
• Security Hotspots: 0 🔥

🔗 Links

• 👀 Monitor Devin Session
• 📊 SonarQube Dashboard
• 🔧 GitHub Actions Run

---

Note: Devin will push a fix to this branch. The workflow will automatically re-run to validate.

[sonarqubecloud]

Quality Gate failed

Failed conditions
4 Security Hotspots
E Security Rating on New Code (required ≥ A)
E Reliability Rating on New Code (required ≥ A)
B Maintainability Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

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[github-actions]

🤖 Devin Triggered

Devin has been assigned to fix the quality gate failures.

📊 Quality Gate Analysis

• Total Issues: 6
• Vulnerabilities: 1 🔴
• Bugs: 3 🐛
• Code Smells: 2 💨
• Security Hotspots: 0 🔥

🔗 Links

• 👀 Monitor Devin Session
• 📊 SonarQube Dashboard
• 🔧 GitHub Actions Run

---

Note: Devin will push a fix to this branch. The workflow will automatically re-run to validate.