Makes kind deployments use the same volume pattern as Docker Compose:
./data/{volume-name} relative to deployment directory.
Changes:
- Allow relative paths for kind (single host, like Docker Compose)
- Default kind volumes to ./data/ instead of provisioner-managed PVCs
- Update Caddy manifest to use hostPath /mnt/caddy-data
- Add caddy-data infrastructure volume support in kind mounts
This enables Caddy certificate persistence across cluster recreation
without requiring system-level directories like /opt/caddy-data.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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