Make the things that matter stand out, matching the Gitea callout look:
- extra.css: brand-orange warning admonitions (#f57c00, the lambda orange),
hotter danger (#e8590c), blue note/info and cyan tip/example, plus blue
code-annotation markers.
- deploy.md: footgun -> danger callout, secrets -> orange warning, eligible
-> tip; Dockerfile and compose gain numbered code annotations explaining
each magic line; paths/mounts as a table; a restart snippet for rotation.
- workflow.md: warning on setting per-repo git identity before first commit;
tip elevating verify-by-executing.
Verified in-browser: computed border colors match (warning #f57c00,
danger #e8590c), 4 annotation markers render in brand blue, admonition
icons + tinted headers match the Gitea style. mkdocs build --strict clean.
Signed-off-by: disqualifier <dev@disqualifier.me>