* feat(detector): flag italic-serif display heroes and uppercase eyebrow chips (#127)
Two new rules covering the structural tells of late-2025/early-2026
AI-generated marketing pages.
- italic-serif-display: oversized italic serif (Fraunces, Recoleta,
Newsreader, Playfair, Cormorant, Tiempos, ...) as the primary hero
headline. Anchored on h1 (or h2 at >= 48px) with font-style: italic
and a serif primary face.
- hero-eyebrow-chip: uppercase letter-spaced label sitting as the
previousElementSibling of a hero h1 (font-size >= 48px). Bounded
text length 2-30 chars, letter-spacing >= 1.6px, font-size <= 14px.
The pill-chip variant (background + border-radius: 999px) falls out
of the same gates for free.
Both follow the existing icon-tile-stack pattern: pure check function +
browser DOM adapter + jsdom adapter, wired into both element loops.
Two-column fixtures (4 flag / 6 pass each) drive the jsdom tests.
Skill copy in source/skills/impeccable/reference/typography.md and
critique.md calls out the patterns by name. The italic-serif rule's
description acknowledges that editorial/magazine register may legitimately
want the pattern -- judge by context.
Closes#127
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
* Add sandbox gotchas for Codex
* Trim verbose detector skill copy
---------
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-authored-by: Paul Bakaus <paulbakaus@pauls-mbp-3.lan>
Covers the per-component tag prefixes, the changelog-label convention
that the release script matches against, the cleanliness gates, the
attached artifacts, and the manual post-release steps for the CLI
(npm publish) and the extension (Chrome Web Store upload).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Marketplace source moved from "./" to "./plugin", a thin generated
subtree containing only the plugin manifest and the impeccable skill.
Per-version plugin cache shrinks ~378× (~770 KB instead of ~291 MB),
and the lockfile is no longer included in the source path so the
cache extraction never runs bun install. (#107)
- skills field in plugin.json now ends with a trailing slash to match
the documented schema (code.claude.com/docs/en/plugins-reference,
every directory example uses ./path/). Three reporters converged on
this fix because Claude Code's plugin loader skips command
registration on some setups when the slash is missing. (#86)
- Anti-patterns maintenance agent moved out of .claude/agents/ into
CLAUDE.md / AGENTS.md as concise inline guidance, since it is
repo-internal dev workflow, not user-facing. The plugin was also
the only place this agent was exposed to install users.
- Skills version bumped to 3.0.2 so existing users pick up the new
install path on next /plugin update.
- Top-level harness directories (.claude/skills/, .cursor/skills/, ...)
intentionally stay where they are; npx skills add reads them
directly from the GitHub repo and that path is unaffected.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
tests/live-e2e/agents/llm-agent.mjs: a Claude-backed VariantAgent that
implements the same one-method interface as the fake agent
(generateVariants(event, context) → { scopedCss, variants[] }). Default
model claude-haiku-4-5; override via IMPECCABLE_E2E_LLM_MODEL.
Prompt caching is on — the system prompt (instructions + the live-mode
spec from reference/live.md) is the cacheable prefix. First call writes
~10K tokens to cache; subsequent fixtures pay only the cache-read rate.
JSON output is validated for shape (scopedCss, variants[N].innerHtml),
with light error messages on parse failure.
tests/live-e2e.test.mjs: read IMPECCABLE_E2E_AGENT (fake|llm). When 'llm',
construct the LLM agent and skip the case cleanly if ANTHROPIC_API_KEY is
unset. Param-manifest assertions are gated to fake mode (LLM may emit
zero-param "fixed point" variants per the live.md spec). The accepted-h1
class assertion now allows hero-title as one of multiple classes so an
LLM agent that adds classes alongside the original still passes.
Test timeouts widen for LLM mode: 25s first-pass on conditional-render
fixtures (vs 5s for fake), 60s on direct waits (vs 30s). Without these,
the LLM's 3-8s generate latency races the orchestration's state-loss
recovery window.
tests/live-e2e/ui.mjs: clickGo retries up to 3× on stability failures.
Required because conditional-render fixtures (modal/tabs) animate the bar
mid-transition when preActions trigger framework HMR; a single click can
land during a re-render and Playwright's stability gate times out.
Pass rate on a typical sweep: 18/19 in LLM mode, 19/19 in fake mode.
The modal fixture's intrinsic state-loss flake (Fast Refresh resetting
useState(open) when source changes) is amplified by LLM latency and may
need a re-run; documented in CLAUDE.md.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Documents `bun run test:live-e2e`, the IMPECCABLE_E2E_ONLY scope env var,
the IMPECCABLE_E2E_DEBUG diagnostic flag, the one-time
`npx playwright install chromium` setup, and why the suite is kept off
the default `bun run test` path.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Runtime fix in live-browser.js: the 2s static-server fallback in handleAccept
now swaps the outer wrapper with the `[data-impeccable-variant="N"]` div itself
(+ display:contents), matching what live-accept.mjs writes to disk. Scope rules
anchored on the variant attribute keep matching on the non-HMR path, so the
accepted design no longer flashes unstyled until reload. Propagated to all
harness script copies.
/designing:
- §03 Polish redesigned as drenched magenta masthead: commands live in the band,
three title/description columns beneath on cream.
- §04 Maintain redesigned as architectural poster diptych: extract + document
vizzes become the hero element, caption below.
- §05 Interop section removed.
- §05 (was §06) "Pick a register" renamed to "Brand, or product." with a
two-lane hairline-divided layout and an auto-selected framing in the sub.
Live mode status: BETA → ALPHA across the periodic table, magazine spread,
and docs callout, reflecting real-world-testing readiness.
Skill bootstrap: removed the `<post-update-cleanup>` block from source/SKILL.md
(the source repo is the origin; running cleanup-deprecated here would touch
legitimate source). CLAUDE.md and AGENTS.md now document the skip.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Bump skills plugin version 2.1.1 -> 3.0.0 (plugin.json, marketplace.json,
harness SKILL.md files). CLI and Chrome extension unchanged.
- Remove prefixed universal zip bundle and all related code:
factory.js prefix/outputSuffix options, zip.js variant pass, utils.js
prefixSkillReferences, the "universal-prefixed" entry in
download-providers.js, and the matching test suite in utils.test.js.
- Redesign Get Started step 1 "Install the skill and CLI": two terminal
rows (npx skills + npm i -g impeccable) with paired notes, drop the
Recommended badge.
- Collapse "Other install methods" back into a <details> element so the
primary install path is the first thing users see.
- Simplify step 3 to "Add the Chrome extension": remove the CLI tool
block (now in step 1), use standard .btn .btn-primary for the CTA so
it matches other primary buttons (square corners, accent slide-up
hover), and lay out the preview screenshot next to the button instead
of stacked so the screenshot no longer dominates vertical space.
- CLAUDE.md: rewrite with v3.0 architecture, the "no em dash also means
no --" rule, the harness-dirs-are-tracked gotcha, the named-export
test-spy warning, and the evals inline-skill.ts sync note.
- AGENTS.md, DEVELOP.md: drop prefixed variant references.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Biggest change in a while. Users previously had 18 standalone skill
entries cluttering their /menu; now they have one entry (/impeccable)
that routes to 20 specialized commands via argument dispatch. The pin
mechanism (/impeccable pin audit) restores standalone shortcuts on
demand for commands users hit all the time.
## Architecture
- Single /impeccable skill with command router section in SKILL.md
- 20 commands served via reference files under source/skills/impeccable/reference/
- /impeccable pin <command> creates a lightweight redirect shim so users
who prefer /audit, /polish, etc. can still have them
- Context gathering (teach) auto-runs on first use
- command-metadata.json is the single source of truth for command
descriptions, argument hints, and relationships
## Site rewrite
- Docs URL: /skills renamed to /docs (with /skills permanent redirects)
- Homepage hero frames Impeccable as "one skill with 20 commands"
- "Get Started" split into 50/50 install + how-to-use with editorial
numbered steps, /impeccable shown as the home command with three modes
- New /docs overview: home command hero card + dense category rows
matching the old cheatsheet density, with leads-to/pairs-with/
combines-with relationship metadata served from a shared source
- Cheatsheet merged into /docs, /cheatsheet redirects
- Magazine spread and mobile cards show /impeccable as a stacked
namespace label above the command name at full display size
- Periodic table updated with craft/teach/extract as first-class cells
- Skill detail pages generate from reference files, with an editorial
wrapper per command for tagline + body
- Tutorials and anti-patterns pages updated to use /impeccable <cmd>
## Build system
- Dead code removed (scripts/lib/transformers/shared.js)
- Build log wording fixed ("1 skill" not "1 skills (1 user-invocable)")
- generateApiData fallback branch removed (throws loudly if metadata
missing instead of silently degrading)
- Commands API includes editorial tagline alongside the long description;
UI surfaces prefer tagline for human display, description for auto-
trigger keyword matching
## Gitignore
- Added .claude/scheduled_tasks.lock, .claude/settings.local.json to
ignore list (local Claude Code state that should not be tracked).
- Harness skill directories (.claude/skills/, .agents/skills/, etc.)
remain tracked by design: npx skills reads them from this repo at
install time and they enable clean submodule use.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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 4.7