Discovers all deployable modules from services/ automatically.
Grouped menu by role (vps / homeserver / any) with descriptions.
Env resolution priority:
1. pre-filled .env in local infra checkout (--infra-dir)
2. .env.example from infra (interactive fill)
3. .env.example bundled in automa (interactive fill, no infra needed)
Usage:
./setup.sh # fully interactive
./setup.sh --infra-dir /path/to/infra # use pre-filled .env files
./setup.sh --dry-run # preview without deploying
Also add .env.example with role/description metadata to each service
module so setup.sh can build the menu and prompt for values without
requiring an infra checkout.
