L01-11 — Stop isolated over-limit ink regions passing ink coverage #116

Outcome

ink-coverage reports every over-limit region above a physically justified minimum size.

Parent and boundary

Parent: #2. Owner: LoopLibCore. This issue owns one bounded slice of Evidence Core; consume accepted upstream contracts and keep PDF/verdict/publication authority with Core.

Grounding

• Preflight coverage backlog row ink-coverage-raster-tac (P2, open, unfiled): ink-coverage is a raster probe that suppresses regions below min_region_area_pct, so an isolated over-limit element passes clean.
• P2 means the named limitation can turn a defective document into a clean pass, which contradicts the L01 exit gate.

Acceptance

• A regression-class fixture that reproduces the defect is committed first and is shown to pass clean before the change.
• The suppression floor is expressed in physical area (mm²) tied to press behavior, not a percentage of page area; regions below probe resolution report incomplete.
• The check then reports a finding, or check-incomplete where a residual limitation remains; it never reports a clean pass on the fixture.
• docs/preflight-check-catalog-overlay.json moves ink-coverage-raster-tac to landed (or narrows its gap text), the corpus-coverage map lists the fixture, and python scripts/generate-architecture-catalogs.py --check passes.
• Failure case: a small rich-black element far above the total-area-coverage limit on a large page must not pass clean.

Required proof

Before/after report snapshots for the new fixture and the unchanged golden corpus. Record the exact source SHA, test command or hosted run, fixture/artifact identity, and any skipped or unavailable lane. Run the repository's mapped proof and check-change gate for a PR.

Handoff

Record changed files, observed result, remaining risk, and a 1–3 sentence anti-slop review. Completion means acceptance evidence, not merely a merged implementation.

Sources

Approved master roadmap · Gap review of the issue suite against the approved roadmap, 2026-09-27.