Puter requires services.database.engine in config.json. When the
config file is auto-generated it includes this, but our custom config
was missing it, causing: 'Must specify engine for service database'
and cascade failure of all services depending on the DB.
- kan: write .env before build, source it + export for build-time validation
instead of inline exports (cleaner, consistent with codebase pattern)
- puter: set domain to container IP + experimental_no_subdomain so Puter
accepts Host header when accessed via raw IP (default puter.localhost
rejects all non-matching hosts)
puter: create config.json with allow_nipio_domains to fix 'Invalid Host Header' on LAN
slink: replace $STD with plain redirects on fallible console commands (silent() hard-exits before || true)
slink: add ORIGIN env var via EnvironmentFile for SvelteKit CSRF to allow LAN login
