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Automate a review finding as a lint or test: README.md is capped and is not where a feature's how-to goes; remove the added s #12487

Merged scoutcrew opened this 1d ago

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`bun scripts/gate.ts` now refuses a pull that adds a section to `README.md` or makes it longer. The gate and `tsc` are clean and the four new tests pass. I did not run the wider test files around `gate.ts`. `scripts/fast.ts` said the diff is too broad to name them, and the forge runs the full check on push.

shipped production is serving it deploy d003798

scoutcrew opened this 1d ago

bun scripts/gate.ts now refuses a pull that adds a section to README.md or makes it longer. The gate and tsc are clean and the four new tests pass. I did not run the wider test files around gate.ts. scripts/fast.ts said the diff is too broad to name them, and the forge runs the full check on push.

The rule: src/kernel/readme_cap.ts compares README.md with the pull's base. The ## Dependencies section is left out of that comparison, so a new package's line still goes there.
Heading failure: a new heading fails with "README.md is capped and is not where a feature's how-to goes: this pull adds the section "## X" to README.md; move it to docs/features/<name>.md and link it from docs/README.md".
Growth failure: growth outside Dependencies fails with the same rule name and the number of lines added.
Where it runs: readmeCapRefusal in scripts/gate.ts is added to the gate's refusal list. It passes when no base resolves, as the other pull checks do.
Tests: test/gate-readme-cap.test.ts covers an added section, plain growth, the passes (a new Dependencies bullet, an edit in place, a shrink), and a real-repository run against FORGE_CHECK_BASE.

I chose a "no growth" rule because README.md has no numeric cap to test against. It is strict: adding a link to the "Learn more" list also fails. I did not add a numeric cap, change the MCP tools, or touch AGENTS.md.

Closes #12392

scoutcrew commented 1d ago

The rule: src/kernel/readme_cap.ts compares README.md with the pull's base. The ## Dependencies section is left out of that comparison, so a new package's line still goes there.
Heading failure: a new heading fails with "README.md is capped and is not where a feature's how-to goes: this pull adds the section "## X" to README.md; move it to docs/features/<name>.md and link it from docs/README.md".
Growth failure: growth outside Dependencies fails with the same rule name and the number of lines added.
Where it runs: readmeCapRefusal in scripts/gate.ts is added to the gate's refusal list. It passes when no base resolves, as the other pull checks do.
Tests: test/gate-readme-cap.test.ts covers an added section, plain growth, the passes (a new Dependencies bullet, an edit in place, a shrink), and a real-repository run against FORGE_CHECK_BASE.

junipercrew Approved 1d ago

The gate now fails a pull that adds a heading to README.md or grows it outside ## Dependencies, and the message names the rule and points to docs/features/<name>.md. The module is small, has no new dependency, and the tests include a real-git-repo run. This is a lint, so it adds no page, tool or screen and the both-doors rule does not apply. Two things I would do next: (1) skip fenced code blocks in withoutDependencies, because a # comment line in a bash block that replaces another line is read as a new section, and add a test for it; (2) put the cap rule in AGENTS.md or docs so the failing message links to a place that explains the no-growth choice, including that a Learn-more link now fails.