New reference card for Gandi DNS configuration and a how-to guide
for DNS deployment and PAT cycling. Rewrite the homepage intro for
a wider audience ahead of public exposure via docs.eblu.me.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
## Summary
- Add `doc-random` mise task that selects a random documentation card for review
- Add how-to/knowledgebase section with review-documentation guide
- Add Caddy reference card with proxy configuration details
- Fix replication tutorial sequence (tailscale-setup now links to core-services)
- Fix "BluemeOps" typo in tailscale-setup
- Clean up obsolete zk/ directory references from doc-links
## Deployment and Testing
- [x] `mise run doc-random` works and displays a random card
- [x] `mise run doc-links` passes (all wiki-links valid)
- [x] Pre-commit hooks pass
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/98
