ci: move container images to the org registry namespace

Build destination, both builder-image references and the three publish
pins now point at novoyuuparosk-wiki/*. The publish pins name a tag that
does not exist in the new namespace until this run's build job pushes it
and the pin job rewrites them, so publishes are briefly broken mid-run.

README.md

@@ -53,7 +53,7 @@ Container network mode: `host` — required so job containers can reach `localho
 
 ### Job container image
 
-All pipelines share a single pre-built Docker image, served from the Gitea registry at `pi5-16.local:3005/mikkeli/novoyuuparosk-wiki-runner`. The `Dockerfile` is at the repo root. It bakes in system deps (git, pandoc, ca-certificates) and all pipeline Python packages so job containers start instantly with no install steps.
+All pipelines share a single pre-built Docker image, served from the Gitea registry at `pi5-16.local:3005/novoyuuparosk-wiki/novoyuuparosk-wiki-runner`. The `Dockerfile` is at the repo root. It bakes in system deps (git, pandoc, ca-certificates) and all pipeline Python packages so job containers start instantly with no install steps.
 
 The image builds automatically via [`.gitea/workflows/build-image.yml`](.gitea/workflows/build-image.yml), which triggers on pushes that touch the `Dockerfile`, any pipeline `requirements.txt`, or that workflow itself. It uses kaniko (daemonless, unprivileged) to build and push two tags: an immutable `:<short-sha>` and a moving `:latest`.
 
@@ -91,7 +91,8 @@ Secrets and variables are scoped to the `novoyuuparosk-wiki` org, inherited by a
 | Ownership | This repo and all three source repos moved to the `novoyuuparosk-wiki` org. Secrets/variables re-created at org scope; runner re-registered instance-level so it serves org-owned runs | 2026-08-11 |
 | **This repo must stay public** | `act_runner` resolves a cross-repo `uses:` by cloning the callee **anonymously** — the job token is not applied. A private callee therefore 404s with `repository not found`, regardless of the caller sharing its owner. Shared ownership does **not** satisfy the read requirement. Alternative if it must be private again: Settings → Actions → General → collaborative owners (Gitea 1.26+), untested here | 2026-08-11 |
 | Runner cache masks this | The resolved callee is cached at `/root/.cache/act/<owner>-<repo>@<ref>`. Changing owner changes the key, so a working pipeline can break on a clone that had been served from cache for months. Suspect the cache before suspecting permissions | 2026-08-11 |
-| Container registry | Packages are not transferable in Gitea, so images stay at `pi5-16.local:3005/mikkeli/*` for now. Registry auth still uses the `mikkeli`-owned `PKGRW_PAT` | 2026-08-11 |
+| Container registry | Gitea cannot transfer packages, so images were *rebuilt* into `pi5-16.local:3005/novoyuuparosk-wiki/*` rather than moved. `kaniko-act` bootstrapped via the new dispatch-only `build-kaniko-act.yml`, running in the old `mikkeli` copy; `novoyuuparosk-wiki-runner` came from a normal `build-image.yml` run. Registry auth is still the `mikkeli`-owned `PKGRW_PAT`, hence the `mikkeli:` username in the auth blob | 2026-08-11 |
+| Old images left in place | The `mikkeli/*` package versions are orphaned but retained — nothing references them, and deleting a container version is irreversible. Safe to purge once the org images have proven themselves | 2026-08-11 |
 | MediaWiki API path | `api.php` (classic action API) | 2026-06-09 |
 | Branch naming (this repo) | `automation/<pipeline>` for pipeline-development branches | 2026-06-09 |
 | Variable naming | `URL_TO_GITEA` not `GITEA_URL` — Gitea blocks `GITEA_`/`GITHUB_` prefixes | 2026-06-09 |