- Changed SSH StrictHostKeyChecking from 'no' to 'accept-new' for better security
- Fixed .env write logic with proper deduplication before appending
- Fixed deregister .env cleanup to use single grep pattern
- Added --domain-suffix option to install.sh
- Removed no-op DOMAIN_SUFFIX sed from install.sh
- Changed cp -n to cp for idempotent script updates
- Fixed authorized_keys.sh SCRIPT_DIR to point to lib/
- Fixed Caddy route management to use POST /routes instead of /load
- Fixed Caddy remove_route to find route by host match, not hardcoded index
