markusgraf_ch/openspec/changes/add-ftps-deployment/proposal.md

# Change Proposal: add-ftps-deployment

## Why
Currently there is no automated way to deploy the built Hugo site to the production server. Manual file transfers are error-prone and time-consuming. This change adds a deployment script to automate uploads via rsync over SSH, properly mirroring content (including deletions).

## What Changes
- Add deployment script `scripts/deploy.sh` that syncs `public/` directory via rsync
- Use environment variables `SSH_USER`, `SSH_HOST`, `SSH_PORT`, and `REMOTE_ROOT` for configuration
- Implement mirror behavior with `--delete` flag to remove remote files not present locally
- Implement prerequisite checks (public/ exists, rsync installed, credentials set)
- Add error handling and progress reporting
- Update documentation with deployment instructions

## Impact
- Affected specs: New `deployment` capability
- Affected code: New file `scripts/deploy.sh`
- Dependencies: Requires `rsync` to be installed
- Configuration: User must set `SSH_USER` and `SSH_HOST` environment variables
  - `SSH_PORT` defaults to 22
  - `REMOTE_ROOT` defaults to /httpsdocs
- No changes to existing Hugo templates, content, or build process