- Add dkim_sync.yml: generates DKIM keys for all mail_domains, writes
keys to stack config (group_vars/all/dkim.yml), and publishes
mail._domainkey TXT records via dns.yml — replaces manual vault editing
- Remove dkim_keys from vault.yml.setup (public keys don't need encryption)
- Add hcloud_labels to config.yml.setup and apply to server + SSH key in
provision role, enabling project-level tagging of Hetzner resources
- Fix setup.sh next steps: add missing bootstrap step, replace manual DKIM
instructions with dkim_sync.yml
- Update CLAUDE.md and README.md accordingly
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
