docs: remove stale passlib references after bcrypt 5.x migration (#2811)

[mrveiss]

Summary

• Replace passlib[bcrypt] with bcrypt>=5.0.0 in DEPENDENCIES.md
• Update design doc to reference bcrypt instead of passlib
• Update enroll-node.yml comment to show bcrypt API

Closes #2811

🤖 Generated with Claude Code

[github-actions]

⚠️ SSOT Configuration Compliance: Violations Found

Metric	Count
Total Violations	4
SSOT Violations (high priority)	3
Other Violations	1

⚠️ 3 values have SSOT config equivalents!

These should be replaced with SSOT config imports:

Python:

from src.config.ssot_config import config
# Use: config.vm.main, config.port.backend, config.backend_url

TypeScript:

import config from '@/config/ssot-config'
// Use: config.vm.main, config.port.backend, config.backendUrl

📖 See SSOT_CONFIG_GUIDE.md for documentation.