Build a runner-image based on node:20-bookworm with all CI tools
baked in, avoiding apt-get install in every workflow run. Runner
labels now point to gitea.coreworlds.io/lazorgurl/runner-image.
The runner containers use node:20-bookworm which already has Node
and corepack. Remove actions/setup-node and pnpm/action-setup
which hang in Gitea Actions. Use corepack enable + pnpm directly.
Also fix preview comment to use Gitea API instead of github-script.
Gitea admin username is julia but the Gitea account name is
lazorgurl. Update container registry URLs, workflow refs,
Taskfile API calls, and pull secret placeholders.
Deploy Gitea via Helm with dedicated CloudNativePG database,
in-cluster Actions runner (DinD), and built-in container registry.
ArgoCD repoURLs updated to use in-cluster Gitea SSH. Preview
ApplicationSet switched from GitHub PR generator to Gitea PR
generator. App images now pull from gitea.coreworlds.io registry.
Remaining setup after deploy: seal runner token, ArgoCD API token,
and registry pull secret once Gitea is running. Add ArgoCD deploy
key to Gitea repo settings.
