chore: security/docs hardening baseline follow-up

[Hardonian]

This PR applies baseline hardening and professional repo docs:

• SECURITY.md
• CONTRIBUTING.md
• QUICKSTART.md
• CODEOWNERS / PR template
• Dependabot + Dependency Review workflow (when path structure allows)
• LICENSE (if missing)

Opened automatically to satisfy branch/repo rules requiring PR-based changes.

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
requiem	Ignored		Apr 16, 2026 6:13am

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 file)

• .github/pull_request_template.md - No issues

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Notes: This PR adds a PR description template (.github/pull_request_template.md), which is a documentation-only change with no runtime implications. The template provides helpful checklists for PR authors to ensure proper validation before submission.

The PR aligns with the stated goal of "baseline hardening and professional repo docs" and is safe to merge.

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_{Reviewed by minimax-m2.5-20260211 · 66,381 tokens}