Resolves all 12 stdlib vulnerabilities (5 high, 7 medium) detected in dependency scan.

Changes:
- Upgrade Go from 1.25.1 to 1.25.5 (runtime: 1.25.6)
- Upgrade gofulmen from v0.2.1 to v0.3.2
- Transitive: crucible v0.3.1 → v0.4.9, golang.org/x/text v0.30.0 → v0.33.0

CVEs resolved:
- CVE-2025-58187, CVE-2025-58188, CVE-2025-61723, CVE-2025-61725, CVE-2025-61729 (high)
- CVE-2025-47912, CVE-2025-58183, CVE-2025-58185, CVE-2025-58186, CVE-2025-58189,
  CVE-2025-61724, CVE-2025-61727 (medium)

Generated by Claude Opus 4.5 via Claude Code under supervision of @3leapsdave
Role: cicd

Co-Authored-By: Claude Opus 4.5 <noreply@3leaps.net>
Committer-of-Record: @3leapsdave