fix(nixfiles): fix formatting stuff

CLAUDE.md

@@ -36,18 +36,18 @@ Excluded from formatting: `*/hardware-configuration.nix` (generated by
 newline) are in `.editorconfig`; note Markdown keeps trailing whitespace, which
 encodes hard line breaks.
 
-## Docs are checked too — the common trap
+## Docs are checked too
 
 prettier formats `*.md`, so **documentation edits must be run through `nix fmt`**
 exactly like code. prettier re-aligns Markdown tables in particular; hand-editing
 a table almost always leaves it non-conformant and fails the `formatting` check.
 
-Beware a false green: the CI `detect` step skips the heavy checks on a pull
-request that touches **no** `.nix`, `flake.lock`, or the workflow file — so a
-docs-only PR reports success without ever running prettier. The failure then
-surfaces on the push-to-`main` run (which always runs the full check) or on the
-next unrelated PR that does touch Nix. Run `nix flake check` locally before
-merging a docs change, regardless of what the PR check shows.
+The CI `formatting` step runs on **every** PR — including docs- and config-only
+changes — so a Markdown/YAML/JSON edit is format-checked before merge, not just
+after it lands on `main`. (The heavier `deadnix`/`statix`/`pre-commit` lints and
+the per-host evaluation still run only when a `.nix` file, `flake.lock`, or the
+workflow changed; see `.gitea/workflows/ci.yaml`.) Run `nix fmt` before you
+commit and the formatting check stays green.
 
 ## Host evaluation