Merge branch 'master' into automation/songs

pipelines/songs/README.md

@@ -59,9 +59,9 @@ Triggers:
 
 ## Dependencies
 
-- Python 3.12+ (job container: `python:3.12-slim`)
-- Pandoc (apt-installed in the job container)
-- `python-frontmatter`, `mwclient`, `PyYAML` — see `requirements.txt`
+Job container: `novoyuuparosk-wiki-runner:latest` (pre-built, stored in the local Docker daemon on the runner host). Bakes in Python 3.12, Pandoc, and all pipeline Python packages — no install steps at job runtime.
+
+See the `Dockerfile` at the repo root and `requirements.txt` in this directory. Rebuild the image after changes to either.
 
 ## Modes