A new icon-tile-stack detection (the canonical AI feature-card with a
small rounded-square icon container above a heading), backed by a
two-column TDD fixture, plus a single-source-of-truth design that ties
the engine to the impeccable skill so they can no longer drift silently.
Detection
- New icon-tile-stack rule (slop): heading's previousElementSibling is
a 32–128px rounded-square element with a non-transparent background
or border, contains an svg/icon-i child, and sits above (not next to)
the heading. Excludes round avatars, wide thumbnails, side-by-side
layouts, tiny icons, and hero images.
- Two-column fixture convention: a single icon-tile-stack.html with a
flag column (4 cases) and pass column (6 cases), with snippet-text
matching used by the fixture test.
Single source of truth
- Each ANTIPATTERNS entry can now declare skillSection + skillGuideline.
18 of 25 rules carry these fields; the build's new
validateAntipatternRules() in scripts/build.js fails if any declared
skillGuideline isn't found verbatim in the right SKILL.md section.
- scripts/build-extension.js now includes the description field in
extension/detector/antipatterns.json (it was previously dropped).
- The existing count validator was promoted from warn to error so
command count drift fails the build the same way detection drift does.
Impeccable skill DON'Ts
- Added 4 new top-level DON'Ts that target real default AI behavior:
single-font, flat-type-hierarchy, all-caps-body, line-length.
- Cut 7 new DON'Ts I had drafted (tight-leading, tiny-text, wide-tracking,
justified-text, low-contrast, cramped-padding, skipped-heading) because
they teach things every model already knows from CSS/a11y basics. The
detector still catches all of them.
Stale count cleanup
- 22 commands → 21 across 17 references in HTML, README, NOTICE, AGENTS,
plugin.json, marketplace.json (left over from the validate skill removal).
- Dropped the hand-coded "212 design guidelines" marketing copy on the
homepage, which never mapped to any real count.
Sub-agent
- New private .claude/agents/anti-patterns.md captures the full TDD
recipe, schema, plug-in points, jsdom constraints, and pre-commit
checklist so future sessions can add rules end-to-end without
re-investigating the wiring.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Build system now computes authoritative counts from source (22 commands,
24 detection rules) and warns about mismatches in HTML, README, plugin
configs. Generates public/js/generated/counts.js for frontend use.
Fixed 15 stale references across index.html, cheatsheet.html, README.md,
NOTICE.md, AGENTS.md, plugin.json, and marketplace.json. Changed all
"20 commands" to "22", "25 rules" to "24". Fixed v1.6.0 changelog date
(was March 24, after v2.0.0's March 20; now March 18).
Changelog entries are excluded from validation since historical counts
were correct at time of release.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Major skill consolidation for v2.0:
- Rename source/skills/frontend-design/ to source/skills/impeccable/
with user-invocable: true and argument-hint: "[teach]"
- Fold teach-impeccable body into impeccable as "Teach Mode" section,
activated via /impeccable teach
- Create deprecation shims:
- frontend-design: redirects to /impeccable
- teach-impeccable: redirects to /impeccable teach
- Update all 16 skill cross-references from {{command_prefix}}frontend-design
to {{command_prefix}}impeccable and {{command_prefix}}teach-impeccable to
{{command_prefix}}impeccable teach
- Update CLI sentinel detection to use 'impeccable' (with teach-impeccable
as legacy fallback)
- Update build system readPatterns() path and EXCLUDED_FROM_SUGGESTIONS
- Update all public files (data.js, cheatsheet, index, viz, demos)
- Update all documentation (README, NOTICE, AGENTS, plugin.json)
- Update all test expectations
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New skill that pushes interfaces past conventional limits with
bleeding-edge browser APIs: WebGPU shaders, scroll-driven animations,
View Transitions, generative art, spring physics, and more.
Key design decisions:
- Strong "when to use / when not to" guardrails
- Progressive enhancement is non-negotiable
- "Pick ONE hero moment" philosophy — restraint in choosing where
- The extraordinary/gimmicky line defined explicitly
- prefers-reduced-motion respect required
Also updates all counts to 20 commands across website, docs, and
plugin metadata.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add to data.js (process steps, categories, relationships)
- Add to framework-viz.js (periodic table symbols and numbers)
- Create before/after demos for both commands
- Update command count 17→19 across all locations:
index.html, cheatsheet.html, README, NOTICE, AGENTS,
plugin.json, marketplace.json
- Add critique→typeset/arrange in relationship flow
- Add "Adding New Skills" checklist to CLAUDE.md so future
skill additions don't miss any locations
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Convert "See It In Action" section to tabbed interface for space efficiency
- Add CLAUDE.md with project instructions for CSS build process
- Update README with additional documentation
- Enhance glass terminal component
- Add new API handlers and server routes
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add interactive before/after demos for all skills (UX Writing, Spatial Design, Motion Design, Typography, Interaction Design, Color & Contrast, Responsive Design)
- Implement tabbed demo navigation for skills with multiple examples
- Refactor app.js into modular JS files (skills.js, commands.js, data.js, skill-demos.js, command-demos.js, demo-toggles.js)
- Add new CSS modules (skill-demos.css, workflow.css, problem-section.css, solution-section.css)
- Redesign commands section with sidebar nav matching skills layout
- Replace large download buttons with compact icon buttons
- Fix gray-on-pink color clashing throughout UI
- Remove frontend-design skill (Anthropic's work, not ours)
- Format skill names properly (e.g., 'UX Writing' not 'ux-writing')
- Remove redundant 'Combines Well With' from skills
- Add 'The Problem' and 'The Solution' sections to homepage
- Various CSS fixes for buttons, backgrounds, and spacing
Paul BakausandClaude Opus 4.6