Adds .gitea/workflows/{ci,deploy}.yml. Both jobs run inside the
custom git.librete.ch/libretech/runner-image:v1 image. CI on every
push runs npm test + a sanity build with placeholder VITE_*. The
deploy workflow (gated on vars.DEPLOY_ENABLED) builds the
multi-stage Vite + nginx Dockerfile, pushes to
git.librete.ch/libretech/code-crispies (main → :main + :sha-<short>;
tag → :<tag> + :latest), and ssh-deploys the netcup stack with
'docker compose pull && up -d'.
compose.yaml gains an opt-in image-pull mode: CC_IMAGE pins the
published tag in production (set in /srv/cc/.env), while the dev
shell falls through to a local build when CC_IMAGE is unset.
Replaces the legacy github-pages workflow at .github/workflows/main.yml
which targeted GitHub Pages, not the netcup deployment.
Michael Czechowski
f28cd5220a
