This record closes the rendering-contract acceptance checklist. It does not claim full application WCAG compliance or exact cross-browser pixel parity.

Commands and outcomes #

Markata-Go #

All commands passed:

go run ./scripts/rendering-contract --check
go test ./...
go vet ./...
go build ./cmd/markata-go
go test ./pkg/renderingcontract -run TestContract_FinalRenderSweepCoversEveryCanonicalPalette -count=1
git diff --check

The final CSS projection sweep audited 120 canonical variants: 120 audited, 120 passing, 0 failing. The contract contains 60 light/dark families.

Theme Lab #

All commands passed:

bun test                         # 10 pass, 0 fail
just browser-regression          # 3 pass, 0 fail, 45 assertions
git diff --check

The browser matrix uses brush-poster, waits for the Knewave font load, checks H1-H6 fixture geometry and bounds, and captures six generated screenshots: none, splatter 0, splatter half, splatter full, dry-brush half, and screenprint half. The zero/none geometry is equal, intermediate/full and recipe masks differ, and the headings remain inside the preview bounds.

Plaindown #

Focused and browser checks passed:

bun test tests/markata-theme.test.js tests/editor-theme-accessibility.test.js tests/render-plan-fixtures.test.js
just browser-regression          # 22 pass, 0 fail, 130 assertions across 2 browser files
git diff --check

The browser files include two Plaindown rendering-regression tests plus the existing browser smoke tests. The suite asserts both Site and Editor mode states, including Site-mode canonical variables and Editor-mode ownership.

The full suite is a baseline, not a rendering gate:

current worktree: 415 pass, 18 fail, 2 errors
origin/main:     389 pass, 20 fail, 4 errors

The 16 named assertion failures are identical in both runs: selectable-hunk review, draft/discard persistence, file-tree actions, navigation aliases, frontmatter media completion, semantic preview routing, remote update actions, wikilink resolution, stale-route recovery, draft deep links, live-preview debouncing, and repository-content sweep checks. The two unhandled errors are environment/dependency failures (@codemirror/*/vendor fflate), not rendering changes.

Evidence boundaries #

  • Go, Theme Lab, and Plaindown intentionally use different rendering recipes: Go emits generated site CSS, Theme Lab is the visual reference, and Plaindown owns editor chrome while Site mode projects the contract. Their shared evidence is normalized state, complete render plans, semantic roles, and final CSS variables—not identical implementation details.
  • Plaindown browser endpoint checks exercise texture, heading-mask, and motif values at 0, 0.5, and 1. They verify readable heading contrast and that motif color mix changes the image, not layer opacity.
  • Plaindown editor source-to-final-variable accessibility uses the separate editor projection audit for every editor-owned theme plus representative browser checks of final body, muted, and boundary variables.
  • Chromium is available and passes. Firefox/WebKit smoke execution is not claimed: installed browser binaries are older than the Playwright package’s requested revisions, and no large download was performed.

Repository hygiene and payload #

The intended files are the source, tests, generated contract projections, docs, checklist, and Theme Lab package.json/bun.lock. Theme Lab node_modules/ and test-results/ are ignored and are not intended for the PR. Browser screenshots are transient review artifacts.

The contract JSON and generated consumer contract are about 34.7 KB and 39.6 KB respectively. Theme Lab’s HTML is about 160 KB; Plaindown’s rendering contract and theme module are about 39.7 KB and 38.8 KB. Theme Lab declares all font families in one CSS import for its catalog, but font-face files are requested by browser use; no 120-palette asset requests were observed.

The public authoring names audited and frozen are palette, aesthetic, fontpack, the nested texture, heading_texture, and motif fields, and variables. No accepted public field is silently ignored.