Module style 

Two gates over every string spar sends to GitHub.

Style. Models comply unreliably with negative instructions, especially over a long run, so prompting is necessary but not sufficient. Every commit message, PR body, and comment is scrubbed deterministically and then re-verified. A leak is a hard error, not a warning.

Concision. The reader of a PR is a human with other work. Model prose defaults to three paragraphs where one sentence would do, and asking nicely has the same reliability problem as asking for no em-dashes. So spar composes every comment itself from structured fields and clips each field to a budget, rather than forwarding whatever the model felt like writing.

Structs

Style

Everything the two gates need to know. Mirrors the [style] config block.

Functions

body

An issue or PR body. Multi-line is fine here; bloat is not.

clip

Truncate to max characters, preferring a sentence boundary.

detail

A finding’s explanation, as it appears in the PR thread. Kept on one line so a bullet stays a bullet.

one_line

Collapse to a single line of single-spaced words.

scrub

Remove banned style artifacts. Idempotent: scrubbing scrubbed text is a no-op, which matters because text passes through here more than once.

strip_empty_sections

Drop a heading whose section holds nothing, and the bare “## Summary” style heading that only announces the body underneath it.

summary

A one-sentence verdict or disposition reason.

tighten

The full outbound treatment for a block of model prose: strip structural noise, then clip to a budget.

title

A finding title, issue title, or PR title: always one line, always short.

violations

Anything the scrub should have caught. Used as a post-check, so that a pattern the scrub cannot fix becomes a loud failure rather than a leak.