Flags any contiguous comment block longer than 30 lines — the threshold
above which a why/impl-notes block should move to docs/ rather than live
in-code (the #2077 rubric, made self-enforcing).
- scripts/check-comment-blocks.sh: git+awk, mirrors check-issue-refs.sh's
capture-output shape (robust to xargs batching). Handles # line comments
(nix/sh), // line comments (rs/js/ts), and /* */ (rs/js/ts/css) + <!-- -->
(html) block comments. Blank separates line-comment blocks; a blank inside
a /* */ / <!-- --> block stays part of it. lint:allow-long-comment escape
hatch. Threshold is a tunable constant.
- ci.yml: own 'comment-block lint' job, kept OUT of required checks while the
tree settles (red signal, not a merge gate), like the tracker-tag lint.
Current tree has 6 blocks > 30 (all in the frontend + hive-c0re-core #2077
slices, none in nix/infra): matrix-accounts.js, permissions.js,
stream-worker.js, terminal.js, hivectl.rs:1036, assets.rs. Non-required, so
non-blocking — they're the remaining #2077 targets for those area owners.
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