chore: trigger security re-scan (#110)

✅ Security & Code Quality Fixes Complete

This PR triggers a re-scan after the following fixes were applied:

**Security (Trivy #25, #26):**
- Upgraded `starlette` 0.47.2 → 0.49.1 (fixes CVE-2025-62727 DoS vulnerability)
- Upgraded `fastapi` 0.116.1 → 0.124.4 (compatible with patched starlette)

**CodeQL Notes (#15, #20-#23, #41):**
- Removed unused imports across 5 files

All tests passing (7/7). No dependency conflicts.

Author: Neiland85