Install Impeccable skill for Codex

.agents/skills/impeccable/scripts/detector/cli/main.mjs

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+import fs from 'node:fs';
+import path from 'node:path';
+
+import { createBrowserDetector, detectUrl } from '../engines/browser/detect-url.mjs';
+import { detectHtml } from '../engines/static-html/detect-html.mjs';
+import { detectText } from '../engines/regex/detect-text.mjs';
+import {
+  HTML_EXTENSIONS,
+  buildImportGraph,
+  detectFrameworkConfig,
+  isPortListening,
+  walkDir,
+} from '../node/file-system.mjs';
+
+// ---------------------------------------------------------------------------
+// Output formatting
+// ---------------------------------------------------------------------------
+
+function formatFindings(findings, jsonMode) {
+  if (jsonMode) return JSON.stringify(findings, null, 2);
+
+  const grouped = {};
+  for (const f of findings) {
+    if (!grouped[f.file]) grouped[f.file] = [];
+    grouped[f.file].push(f);
+  }
+  const out = [];
+  for (const [file, items] of Object.entries(grouped)) {
+    const importNote = items[0]?.importedBy?.length ? ` (imported by ${items[0].importedBy.join(', ')})` : '';
+    out.push(`\n${file}${importNote}`);
+    for (const item of items) {
+      out.push(`  ${item.line ? `line ${item.line}: ` : ''}[${item.antipattern}] ${item.snippet}`);
+      out.push(`    → ${item.description}`);
+    }
+  }
+  out.push(`\n${findings.length} anti-pattern${findings.length === 1 ? '' : 's'} found.`);
+  return out.join('\n');
+}
+
+// ---------------------------------------------------------------------------
+// Stdin handling
+// ---------------------------------------------------------------------------
+
+async function handleStdin(options = {}) {
+  const chunks = [];
+  for await (const chunk of process.stdin) chunks.push(chunk);
+  const input = Buffer.concat(chunks).toString('utf-8');
+  try {
+    const parsed = JSON.parse(input);
+    const fp = parsed?.tool_input?.file_path;
+    if (fp && fs.existsSync(fp)) {
+      return HTML_EXTENSIONS.has(path.extname(fp).toLowerCase())
+        ? detectHtml(fp, options) : detectText(fs.readFileSync(fp, 'utf-8'), fp, options);
+    }
+  } catch { /* not JSON */ }
+  return detectText(input, '<stdin>', options);
+}
+
+
+// ---------------------------------------------------------------------------
+// CLI
+// ---------------------------------------------------------------------------
+
+async function confirm(question) {
+  const rl = (await import('node:readline')).default.createInterface({
+    input: process.stdin, output: process.stderr,
+  });
+  return new Promise((resolve) => {
+    rl.question(`${question} [Y/n] `, (answer) => {
+      rl.close();
+      resolve(!answer || /^y(es)?$/i.test(answer.trim()));
+    });
+  });
+}
+
+function printUsage() {
+  console.log(`Usage: impeccable detect [options] [file-or-dir-or-url...]
+
+Scan files or URLs for UI anti-patterns and design quality issues.
+
+Options:
+  --json    Output results as JSON
+  --gpt     Also report GPT-specific provider tells (off by default)
+  --gemini  Also report Gemini-specific provider tells (off by default)
+  --help    Show this help message
+
+Detection modes:
+  HTML files     Static HTML/CSS analysis (default, catches linked CSS)
+  Non-HTML files Regex pattern matching (CSS, JSX, TSX, etc.)
+  URLs           Puppeteer full browser rendering (auto-detected)
+
+Examples:
+  impeccable detect src/
+  impeccable detect index.html
+  impeccable detect https://example.com
+  impeccable detect --json .`);
+}
+
+async function detectCli() {
+  let args = process.argv.slice(2).map(arg => {
+    if (arg === '-json') return '--json';
+    if (arg === '-fast') return '--fast';
+    return arg;
+  });
+  if (args[0] === 'detect') args = args.slice(1);
+  const jsonMode = args.includes('--json');
+  const helpMode = args.includes('--help');
+  // --fast (regex-only) is deprecated: since the jsdom removal, the static
+  // HTML/CSS analysis is fast and covers every rule, so the regex-only path
+  // only loses coverage for no real speed win. Accept the flag for back-compat
+  // but ignore it and run the full scan.
+  if (args.includes('--fast')) {
+    process.stderr.write(
+      'Note: --fast is deprecated and ignored. The full scan is fast now and runs every rule.\n',
+    );
+  }
+  const providers = [];
+  if (args.includes('--gpt')) providers.push('gpt');
+  if (args.includes('--gemini')) providers.push('gemini');
+  const scanOptions = { providers };
+  const targets = args.filter(a => !a.startsWith('--'));
+
+  if (helpMode) { printUsage(); process.exit(0); }
+
+  let allFindings = [];
+
+  if (!process.stdin.isTTY && targets.length === 0) {
+    allFindings = await handleStdin(scanOptions);
+  } else {
+    const paths = targets.length > 0 ? targets : [process.cwd()];
+    const urlTargetCount = paths.filter(target => /^https?:\/\//i.test(target)).length;
+    const browserDetector = urlTargetCount > 1 ? await createBrowserDetector() : null;
+
+    try {
+      for (const target of paths) {
+        if (/^https?:\/\//i.test(target)) {
+          try {
+            const scanner = browserDetector
+              ? (url) => browserDetector.detectUrl(url, scanOptions)
+              : (url) => detectUrl(url, scanOptions);
+            allFindings.push(...await scanner(target));
+          } catch (e) { process.stderr.write(`Error: ${e.message}\n`); }
+          continue;
+        }
+
+        const resolved = path.resolve(target);
+        let stat;
+        try { stat = fs.statSync(resolved); }
+        catch { process.stderr.write(`Warning: cannot access ${target}\n`); continue; }
+
+        if (stat.isDirectory()) {
+          // Check for framework dev server config (skip in JSON mode to avoid polluting output)
+          if (!jsonMode) {
+            const fwConfig = detectFrameworkConfig(resolved);
+            if (fwConfig) {
+              const probe = await isPortListening(fwConfig.port, fwConfig.fingerprint);
+              if (probe.listening && probe.matched) {
+                process.stderr.write(
+                  `\n${fwConfig.name} dev server detected on localhost:${fwConfig.port}.\n` +
+                  `For more accurate results, scan the running site:\n` +
+                  `  npx impeccable detect http://localhost:${fwConfig.port}\n\n`
+                );
+              } else if (probe.listening && !probe.matched) {
+                process.stderr.write(
+                  `\n${fwConfig.name} project detected (${path.basename(fwConfig.configPath)}).\n` +
+                  `Port ${fwConfig.port} is in use by another service. Start the ${fwConfig.name} dev server and scan via URL for best results.\n\n`
+                );
+              } else {
+                process.stderr.write(
+                  `\n${fwConfig.name} project detected (${path.basename(fwConfig.configPath)}).\n` +
+                  `Start the dev server and scan via URL for best results:\n` +
+                  `  npx impeccable detect http://localhost:${fwConfig.port}\n\n`
+                );
+              }
+            }
+          }
+
+          const files = walkDir(resolved);
+          const htmlCount = files.filter(f => HTML_EXTENSIONS.has(path.extname(f).toLowerCase())).length;
+
+          // Warn and confirm if scanning many files (static HTML/CSS processes each HTML file)
+          if (files.length > 50 && process.stdin.isTTY && !jsonMode) {
+            process.stderr.write(
+              `\nFound ${files.length} files (${htmlCount} HTML) in ${target}.\n` +
+              `Scanning may take a while${htmlCount > 10 ? ' (static HTML/CSS processes each HTML file individually)' : ''}.\n` +
+              `Target a specific subdirectory to narrow scope.\n`
+            );
+            const ok = await confirm('Continue?');
+            if (!ok) { process.stderr.write('Aborted.\n'); process.exit(0); }
+          }
+
+          // Build import graph for multi-file awareness
+          const graph = buildImportGraph(files);
+          // Build reverse map: file -> set of files that import it
+          const importedByMap = new Map();
+          for (const [importer, imports] of graph) {
+            for (const imported of imports) {
+              if (!importedByMap.has(imported)) importedByMap.set(imported, new Set());
+              importedByMap.get(imported).add(importer);
+            }
+          }
+
+          for (const file of files) {
+            const ext = path.extname(file).toLowerCase();
+            let fileFindings;
+            if (HTML_EXTENSIONS.has(ext)) {
+              fileFindings = await detectHtml(file, scanOptions);
+            } else {
+              fileFindings = detectText(fs.readFileSync(file, 'utf-8'), file, scanOptions);
+            }
+            // Annotate findings with import context
+            const importers = importedByMap.get(file);
+            if (importers && importers.size > 0) {
+              const importerNames = [...importers].map(f => path.basename(f));
+              for (const f of fileFindings) {
+                f.importedBy = importerNames;
+              }
+            }
+            allFindings.push(...fileFindings);
+          }
+        } else if (stat.isFile()) {
+          const ext = path.extname(resolved).toLowerCase();
+          if (HTML_EXTENSIONS.has(ext)) {
+            allFindings.push(...await detectHtml(resolved, scanOptions));
+          } else {
+            allFindings.push(...detectText(fs.readFileSync(resolved, 'utf-8'), resolved, scanOptions));
+          }
+        }
+      }
+    } finally {
+      if (browserDetector) await browserDetector.close();
+    }
+  }
+
+  if (allFindings.length > 0) {
+    if (jsonMode) process.stdout.write(formatFindings(allFindings, true) + '\n');
+    else process.stderr.write(formatFindings(allFindings, false) + '\n');
+    process.exit(2);
+  }
+  if (jsonMode) process.stdout.write('[]\n');
+  process.exit(0);
+}
+
+export { formatFindings, handleStdin, confirm, printUsage, detectCli };

.agents/skills/impeccable/scripts/detector/detect-antipatterns.mjs

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+#!/usr/bin/env node
+
+/**
+ * Anti-Pattern Detector for Impeccable
+ * Copyright (c) 2026 Paul Bakaus
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Public API facade. Runtime engines live under cli/engine/engines/.
+ */
+
+import { detectCli } from './cli/main.mjs';
+
+export { ANTIPATTERNS, RULE_ENGINE_SUPPORT, getAntipattern, getRulesForCategory, getRuleEngineSupport } from './registry/antipatterns.mjs';
+export { SAFE_TAGS, BORDER_SAFE_TAGS, OVERUSED_FONTS, GENERIC_FONTS, KNOWN_SERIF_FONTS } from './shared/constants.mjs';
+export { isNeutralColor, parseRgb, relativeLuminance, contrastRatio, parseGradientColors, hasChroma, getHue, colorToHex } from './shared/color.mjs';
+export { isFullPage } from './shared/page.mjs';
+export {
+  checkElementBorders,
+  checkElementMotion,
+  checkElementGlow,
+  checkPageTypography,
+  checkPageLayout,
+  checkHtmlPatterns,
+} from './rules/checks.mjs';
+export { createDetectorProfile, summarizeDetectorProfile } from './profile/profiler.mjs';
+export { detectHtml } from './engines/static-html/detect-html.mjs';
+export { detectUrl, createBrowserDetector } from './engines/browser/detect-url.mjs';
+export { detectText, extractStyleBlocks, extractCSSinJS } from './engines/regex/detect-text.mjs';
+export {
+  walkDir,
+  SCANNABLE_EXTENSIONS,
+  SKIP_DIRS,
+  buildImportGraph,
+  resolveImport,
+  detectFrameworkConfig,
+  isPortListening,
+  FRAMEWORK_CONFIGS,
+} from './node/file-system.mjs';
+export { formatFindings, detectCli } from './cli/main.mjs';
+
+const isMainModule = process.argv[1]?.endsWith('detect-antipatterns.mjs') ||
+  process.argv[1]?.endsWith('detect-antipatterns.mjs/');
+if (isMainModule) detectCli();

.agents/skills/impeccable/scripts/detector/engines/browser/detect-url.mjs

@@ -0,0 +1,252 @@
+import fs from 'node:fs';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+import { finding } from '../../findings.mjs';
+import { filterByProviders } from '../../registry/antipatterns.mjs';
+import { profileFindingsAsync, profileStep, profileStepAsync } from '../../profile/profiler.mjs';
+import { captureVisualContrastCandidate } from '../visual/screenshot-contrast.mjs';
+
+async function runVisualContrastFallback(page, serializedGroups, options, profile, target) {
+  if (options?.visualContrast === false) return [];
+  const maxCandidates = Number.isFinite(options?.visualContrastMaxCandidates)
+    ? options.visualContrastMaxCandidates
+    : 12;
+  const scrollOffscreen = options?.visualContrastScrollOffscreen !== false;
+  const existingLowContrastSelectors = new Set(
+    serializedGroups
+      .filter(group => group.findings?.some(f => f.type === 'low-contrast'))
+      .map(group => group.selector)
+      .filter(Boolean)
+  );
+
+  let browserAnalyses = [];
+  const findings = [];
+  if (options?.visualContrastBrowser !== false) {
+    const browserFindings = await profileFindingsAsync(profile, {
+      engine: 'browser',
+      phase: 'visual-contrast',
+      ruleId: 'browser-fallback',
+      target,
+    }, async () => {
+      browserAnalyses = await page.evaluate(async ({ maxCandidates, scrollOffscreen }) => {
+        if (typeof window.impeccableAnalyzeVisualContrast !== 'function') return [];
+        return window.impeccableAnalyzeVisualContrast({ maxCandidates, scrollOffscreen });
+      }, { maxCandidates, scrollOffscreen });
+      return browserAnalyses
+        .filter(result => result.finding && !existingLowContrastSelectors.has(result.selector))
+        .map(result => result.finding);
+    });
+    findings.push(...browserFindings);
+  }
+
+  let candidates = browserAnalyses.length > 0 ? browserAnalyses : [];
+  if (candidates.length === 0) {
+    candidates = await profileStepAsync(profile, {
+      engine: 'browser',
+      phase: 'visual-contrast',
+      ruleId: 'collect-candidates',
+      target,
+    }, () => page.evaluate(({ maxCandidates }) => {
+      if (typeof window.impeccableCollectVisualContrastCandidates !== 'function') return [];
+      return window.impeccableCollectVisualContrastCandidates({ maxCandidates });
+    }, { maxCandidates }));
+  }
+
+  const viewport = options?.viewport || { width: 1280, height: 800 };
+  const browserResolvedSelectors = new Set(
+    browserAnalyses
+      .filter(result => result.status === 'fail' || result.status === 'pass')
+      .map(result => result.selector)
+      .filter(Boolean)
+  );
+  const filtered = candidates.filter(candidate =>
+    !existingLowContrastSelectors.has(candidate.selector) &&
+    !browserResolvedSelectors.has(candidate.selector)
+  );
+  if (options?.visualContrastPixel === false) return findings;
+  for (const candidate of filtered) {
+    const result = await profileFindingsAsync(profile, {
+      engine: 'browser',
+      phase: 'visual-contrast',
+      ruleId: 'pixel-diff',
+      target,
+    }, async () => {
+      const finding = await captureVisualContrastCandidate(page, candidate, viewport);
+      return finding ? [finding] : [];
+    });
+    findings.push(...result);
+  }
+  return findings;
+}
+
+// ---------------------------------------------------------------------------
+// Puppeteer detection (for URLs)
+// ---------------------------------------------------------------------------
+
+async function detectUrl(url, options = {}) {
+  const profile = options?.profile;
+  const waitUntil = options?.waitUntil || 'networkidle0';
+  const settleMs = Number.isFinite(options?.settleMs) ? options.settleMs : 0;
+  const viewport = options?.viewport || { width: 1280, height: 800 };
+  const externalBrowser = options?.browser || null;
+  let puppeteer;
+  if (!externalBrowser) {
+    try {
+      puppeteer = await profileStepAsync(profile, {
+        engine: 'browser',
+        phase: 'setup',
+        ruleId: 'import-puppeteer',
+        target: url,
+      }, () => import('puppeteer'));
+    } catch {
+      throw new Error('puppeteer is required for URL scanning. Install: npm install puppeteer');
+    }
+  }
+
+  // Read the browser detection script — reuse it instead of reimplementing
+  const browserScriptPath = path.resolve(
+    path.dirname(fileURLToPath(import.meta.url)),
+    '..',
+    '..',
+    'detect-antipatterns-browser.js'
+  );
+  let browserScript;
+  try {
+    browserScript = profileStep(profile, {
+      engine: 'browser',
+      phase: 'setup',
+      ruleId: 'read-browser-script',
+      target: url,
+    }, () => fs.readFileSync(browserScriptPath, 'utf-8'));
+  } catch {
+    throw new Error(`Browser script not found at ${browserScriptPath}`);
+  }
+
+  // CI runners (GitHub Actions Ubuntu) block unprivileged user namespaces, so
+  // Chrome can't initialize its sandbox there. Disable the sandbox only when
+  // running in CI; local users keep the default hardened launch.
+  const launchArgs = process.env.CI ? ['--no-sandbox', '--disable-setuid-sandbox'] : [];
+  const browser = externalBrowser || await profileStepAsync(profile, {
+    engine: 'browser',
+    phase: 'load',
+    ruleId: 'launch-browser',
+    target: url,
+  }, () => puppeteer.default.launch({ headless: true, args: launchArgs }));
+  const page = await profileStepAsync(profile, {
+    engine: 'browser',
+    phase: 'load',
+    ruleId: 'new-page',
+    target: url,
+  }, () => browser.newPage());
+  let results = [];
+  try {
+    await profileStepAsync(profile, {
+      engine: 'browser',
+      phase: 'load',
+      ruleId: 'set-viewport',
+      target: url,
+    }, () => page.setViewport(viewport));
+    await profileStepAsync(profile, {
+      engine: 'browser',
+      phase: 'load',
+      ruleId: `goto:${waitUntil}`,
+      target: url,
+    }, () => page.goto(url, { waitUntil, timeout: 30000 }));
+    if (settleMs > 0) {
+      await profileStepAsync(profile, {
+        engine: 'browser',
+        phase: 'load',
+        ruleId: 'settle',
+        target: url,
+      }, () => new Promise(resolve => setTimeout(resolve, settleMs)));
+    }
+
+    // Inject the browser detection script and collect results
+    await profileStepAsync(profile, {
+      engine: 'browser',
+      phase: 'scan',
+      ruleId: 'configure-pure-detect',
+      target: url,
+    }, () => page.evaluate(() => {
+      window.__IMPECCABLE_CONFIG__ = {
+        ...(window.__IMPECCABLE_CONFIG__ || {}),
+        autoScan: false,
+      };
+    }));
+    await profileStepAsync(profile, {
+      engine: 'browser',
+      phase: 'scan',
+      ruleId: 'inject-browser-script',
+      target: url,
+    }, () => page.evaluate(browserScript));
+    let serializedGroups = [];
+    results = await profileFindingsAsync(profile, {
+      engine: 'browser',
+      phase: 'scan',
+      ruleId: 'browser-scan',
+      target: url,
+    }, async () => {
+      serializedGroups = await page.evaluate(() => {
+        if (!window.impeccableDetect) return [];
+        return window.impeccableDetect({ decorate: false, serialize: true });
+      });
+      return serializedGroups.flatMap(({ findings }) =>
+        findings.map(f => ({ id: f.type, snippet: f.detail }))
+      );
+    });
+    const visualFindings = await runVisualContrastFallback(page, serializedGroups, options, profile, url);
+    results.push(...visualFindings);
+  } finally {
+    await profileStepAsync(profile, {
+      engine: 'browser',
+      phase: 'load',
+      ruleId: 'close-page',
+      target: url,
+    }, () => page.close().catch(() => {}));
+    if (!externalBrowser) {
+      await profileStepAsync(profile, {
+        engine: 'browser',
+        phase: 'load',
+        ruleId: 'close-browser',
+        target: url,
+      }, () => browser.close());
+    }
+  }
+  return filterByProviders(results.map(f => finding(f.id, url, f.snippet)), options.providers);
+}
+
+async function createBrowserDetector(options = {}) {
+  let puppeteer;
+  try {
+    puppeteer = await import('puppeteer');
+  } catch {
+    throw new Error('puppeteer is required for URL scanning. Install: npm install puppeteer');
+  }
+  const launchArgs = options.launchArgs || (process.env.CI ? ['--no-sandbox', '--disable-setuid-sandbox'] : []);
+  const browser = options.browser || await puppeteer.default.launch({
+    headless: options.headless ?? true,
+    args: launchArgs,
+  });
+  const ownsBrowser = !options.browser;
+  const defaults = {
+    waitUntil: options.waitUntil || 'load',
+    settleMs: Number.isFinite(options.settleMs) ? options.settleMs : 100,
+    viewport: options.viewport || { width: 1280, height: 800 },
+  };
+  return {
+    browser,
+    async detectUrl(url, scanOptions = {}) {
+      return detectUrl(url, {
+        ...defaults,
+        ...scanOptions,
+        browser,
+      });
+    },
+    async close() {
+      if (ownsBrowser) await browser.close().catch(() => {});
+    },
+  };
+}
+
+export { runVisualContrastFallback, detectUrl, createBrowserDetector };

.agents/skills/impeccable/scripts/detector/engines/regex/detect-text.mjs

@@ -0,0 +1,535 @@
+import { GENERIC_FONTS } from '../../shared/constants.mjs';
+import { isFullPage } from '../../shared/page.mjs';
+import { finding } from '../../findings.mjs';
+import { filterByProviders } from '../../registry/antipatterns.mjs';
+import { profileFindings, profileStep } from '../../profile/profiler.mjs';
+
+// ---------------------------------------------------------------------------
+// Regex fallback (non-HTML files: CSS, JSX, TSX, etc.)
+// ---------------------------------------------------------------------------
+
+const hasRounded = (line) => /\brounded(?:-\w+)?\b/.test(line);
+const hasBorderRadius = (line) => /border-radius/i.test(line);
+const isSafeElement = (line) => /<(?:blockquote|nav[\s>]|pre[\s>]|code[\s>]|a\s|input[\s>]|span[\s>])/i.test(line);
+
+/** Strip HTML to plain text — drops script/style/comments/tags so
+ *  content-text analyzers don't false-positive on code or CSS. */
+function stripHtmlToText(html) {
+  return html
+    .replace(/<script\b[^>]*>[\s\S]*?<\/script>/gi, ' ')
+    .replace(/<style\b[^>]*>[\s\S]*?<\/style>/gi, ' ')
+    .replace(/<!--[\s\S]*?-->/g, ' ')
+    .replace(/<[^>]+>/g, ' ')
+    .replace(/\s+/g, ' ');
+}
+
+function isNeutralBorderColor(str) {
+  const m = str.match(/solid\s+(#[0-9a-f]{3,8}|rgba?\([^)]+\)|\w+)/i);
+  if (!m) return false;
+  const c = m[1].toLowerCase();
+  if (['gray', 'grey', 'silver', 'white', 'black', 'transparent', 'currentcolor'].includes(c)) return true;
+  const hex = c.match(/^#([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/);
+  if (hex) {
+    const [r, g, b] = [parseInt(hex[1], 16), parseInt(hex[2], 16), parseInt(hex[3], 16)];
+    return (Math.max(r, g, b) - Math.min(r, g, b)) < 30;
+  }
+  const shex = c.match(/^#([0-9a-f])([0-9a-f])([0-9a-f])$/);
+  if (shex) {
+    const [r, g, b] = [parseInt(shex[1] + shex[1], 16), parseInt(shex[2] + shex[2], 16), parseInt(shex[3] + shex[3], 16)];
+    return (Math.max(r, g, b) - Math.min(r, g, b)) < 30;
+  }
+  return false;
+}
+
+const REGEX_MATCHERS = [
+  // --- Side-tab ---
+  { id: 'side-tab', regex: /\bborder-[lrse]-(\d+)\b/g,
+    test: (m, line) => { const n = +m[1]; return hasRounded(line) ? n >= 1 : n >= 4; },
+    fmt: (m) => m[0] },
+  { id: 'side-tab', regex: /border-(?:left|right)\s*:\s*(\d+)px\s+solid[^;]*/gi,
+    test: (m, line) => { if (isSafeElement(line)) return false; if (isNeutralBorderColor(m[0])) return false; const n = +m[1]; return hasBorderRadius(line) ? n >= 1 : n >= 3; },
+    fmt: (m) => m[0].replace(/\s*;?\s*$/, '') },
+  { id: 'side-tab', regex: /border-(?:left|right)-width\s*:\s*(\d+)px/gi,
+    test: (m, line) => !isSafeElement(line) && +m[1] >= 3,
+    fmt: (m) => m[0] },
+  { id: 'side-tab', regex: /border-inline-(?:start|end)\s*:\s*(\d+)px\s+solid/gi,
+    test: (m, line) => !isSafeElement(line) && +m[1] >= 3,
+    fmt: (m) => m[0] },
+  { id: 'side-tab', regex: /border-inline-(?:start|end)-width\s*:\s*(\d+)px/gi,
+    test: (m, line) => !isSafeElement(line) && +m[1] >= 3,
+    fmt: (m) => m[0] },
+  { id: 'side-tab', regex: /border(?:Left|Right)\s*[:=]\s*["'`](\d+)px\s+solid/g,
+    test: (m) => +m[1] >= 3,
+    fmt: (m) => m[0] },
+  // --- Border accent on rounded ---
+  { id: 'border-accent-on-rounded', regex: /\bborder-[tb]-(\d+)\b/g,
+    test: (m, line) => hasRounded(line) && +m[1] >= 1,
+    fmt: (m) => m[0] },
+  { id: 'border-accent-on-rounded', regex: /border-(?:top|bottom)\s*:\s*(\d+)px\s+solid/gi,
+    test: (m, line) => +m[1] >= 3 && hasBorderRadius(line),
+    fmt: (m) => m[0] },
+  // --- Overused font ---
+  { id: 'overused-font', regex: /font-family\s*:\s*['"]?(Inter|Roboto|Open Sans|Lato|Montserrat|Arial|Helvetica|Fraunces|Geist Sans|Geist Mono|Geist|Mona Sans|Plus Jakarta Sans|Space Grotesk|Recoleta|Instrument Sans|Instrument Serif)\b/gi,
+    test: () => true,
+    fmt: (m) => m[0] },
+  { id: 'overused-font', regex: /fonts\.googleapis\.com\/css2?\?family=(Inter|Roboto|Open\+Sans|Lato|Montserrat|Fraunces|Plus\+Jakarta\+Sans|Space\+Grotesk|Instrument\+Sans|Instrument\+Serif|Mona\+Sans|Geist)\b/gi,
+    test: () => true,
+    fmt: (m) => `Google Fonts: ${m[1].replace(/\+/g, ' ')}` },
+  // --- Gradient text ---
+  { id: 'gradient-text', regex: /background-clip\s*:\s*text|-webkit-background-clip\s*:\s*text/gi,
+    test: (m, line) => /gradient/i.test(line),
+    fmt: () => 'background-clip: text + gradient' },
+  // --- Gradient text (Tailwind) ---
+  { id: 'gradient-text', regex: /\bbg-clip-text\b/g,
+    test: (m, line) => /\bbg-gradient-to-/i.test(line),
+    fmt: () => 'bg-clip-text + bg-gradient' },
+  // --- Tailwind gray on colored bg ---
+  { id: 'gray-on-color', regex: /\btext-(?:gray|slate|zinc|neutral|stone)-(\d+)\b/g,
+    test: (m, line) => /\bbg-(?:red|orange|amber|yellow|lime|green|emerald|teal|cyan|sky|blue|indigo|violet|purple|fuchsia|pink|rose)-\d+\b/.test(line),
+    fmt: (m, line) => { const bg = line.match(/\bbg-(?:red|orange|amber|yellow|lime|green|emerald|teal|cyan|sky|blue|indigo|violet|purple|fuchsia|pink|rose)-\d+\b/); return `${m[0]} on ${bg?.[0] || '?'}`; } },
+  // --- Tailwind AI palette ---
+  { id: 'ai-color-palette', regex: /\btext-(?:purple|violet|indigo)-(\d+)\b/g,
+    test: (m, line) => /\btext-(?:[2-9]xl|[3-9]xl)\b|<h[1-3]/i.test(line),
+    fmt: (m) => `${m[0]} on heading` },
+  { id: 'ai-color-palette', regex: /\bfrom-(?:purple|violet|indigo)-(\d+)\b/g,
+    test: (m, line) => /\bto-(?:purple|violet|indigo|blue|cyan|pink|fuchsia)-\d+\b/.test(line),
+    fmt: (m) => `${m[0]} gradient` },
+  // --- Bounce/elastic easing ---
+  { id: 'bounce-easing', regex: /\banimate-bounce\b/g,
+    test: () => true,
+    fmt: () => 'animate-bounce (Tailwind)' },
+  { id: 'bounce-easing', regex: /animation(?:-name)?\s*:\s*[^;]*\b(bounce|elastic|wobble|jiggle|spring)\b/gi,
+    test: () => true,
+    fmt: (m) => m[0] },
+  { id: 'bounce-easing', regex: /cubic-bezier\(\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*\)/g,
+    test: (m) => {
+      const y1 = parseFloat(m[2]), y2 = parseFloat(m[4]);
+      return y1 < -0.1 || y1 > 1.1 || y2 < -0.1 || y2 > 1.1;
+    },
+    fmt: (m) => `cubic-bezier(${m[1]}, ${m[2]}, ${m[3]}, ${m[4]})` },
+  // --- Layout property transition ---
+  { id: 'layout-transition', regex: /transition\s*:\s*([^;{}]+)/gi,
+    test: (m) => {
+      const val = m[1].toLowerCase();
+      if (/\ball\b/.test(val)) return false;
+      return /\b(?:(?:max|min)-)?(?:width|height)\b|\bpadding\b|\bmargin\b/.test(val);
+    },
+    fmt: (m) => {
+      const found = m[1].match(/\b(?:(?:max|min)-)?(?:width|height)\b|\bpadding(?:-(?:top|right|bottom|left))?\b|\bmargin(?:-(?:top|right|bottom|left))?\b/gi);
+      return `transition: ${found ? found.join(', ') : m[1].trim()}`;
+    } },
+  { id: 'layout-transition', regex: /transition-property\s*:\s*([^;{}]+)/gi,
+    test: (m) => {
+      const val = m[1].toLowerCase();
+      if (/\ball\b/.test(val)) return false;
+      return /\b(?:(?:max|min)-)?(?:width|height)\b|\bpadding\b|\bmargin\b/.test(val);
+    },
+    fmt: (m) => {
+      const found = m[1].match(/\b(?:(?:max|min)-)?(?:width|height)\b|\bpadding(?:-(?:top|right|bottom|left))?\b|\bmargin(?:-(?:top|right|bottom|left))?\b/gi);
+      return `transition-property: ${found ? found.join(', ') : m[1].trim()}`;
+    } },
+  // --- Broken image: src="" or src="#" or src=" " ---
+  { id: 'broken-image', regex: /<img\b[^>]*?\bsrc\s*=\s*(?:""|''|"\s+"|'\s+'|"#"|'#')/gi,
+    test: () => true,
+    fmt: (m) => m[0].slice(0, 100) },
+  // --- Broken image: <img> with no src attribute at all ---
+  { id: 'broken-image', regex: /<img\b(?:(?!\bsrc\s*=)[^>])*>/gi,
+    test: (m) => !/\bsrc\s*=/i.test(m[0]),
+    fmt: (m) => m[0].slice(0, 100) },
+];
+
+const REGEX_ANALYZERS = [
+  // Single font
+  (content, filePath) => {
+    const fontFamilyRe = /font-family\s*:\s*([^;}]+)/gi;
+    const fonts = new Set();
+    let m;
+    while ((m = fontFamilyRe.exec(content)) !== null) {
+      for (const f of m[1].split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase())) {
+        if (f && !GENERIC_FONTS.has(f)) fonts.add(f);
+      }
+    }
+    const gfRe = /fonts\.googleapis\.com\/css2?\?family=([^&"'\s]+)/gi;
+    while ((m = gfRe.exec(content)) !== null) {
+      for (const f of m[1].split('|').map(f => f.split(':')[0].replace(/\+/g, ' ').toLowerCase())) fonts.add(f);
+    }
+    if (fonts.size !== 1 || content.split('\n').length < 20) return [];
+    const name = [...fonts][0];
+    const lines = content.split('\n');
+    let line = 1;
+    for (let i = 0; i < lines.length; i++) { if (lines[i].toLowerCase().includes(name)) { line = i + 1; break; } }
+    return [finding('single-font', filePath, `only font used is ${name}`, line)];
+  },
+  // Flat type hierarchy
+  (content, filePath) => {
+    const sizes = new Set();
+    const REM = 16;
+    let m;
+    const sizeRe = /font-size\s*:\s*([\d.]+)(px|rem|em)\b/gi;
+    while ((m = sizeRe.exec(content)) !== null) {
+      const px = m[2] === 'px' ? +m[1] : +m[1] * REM;
+      if (px > 0 && px < 200) sizes.add(Math.round(px * 10) / 10);
+    }
+    const clampRe = /font-size\s*:\s*clamp\(\s*([\d.]+)(px|rem|em)\s*,\s*[^,]+,\s*([\d.]+)(px|rem|em)\s*\)/gi;
+    while ((m = clampRe.exec(content)) !== null) {
+      sizes.add(Math.round((m[2] === 'px' ? +m[1] : +m[1] * REM) * 10) / 10);
+      sizes.add(Math.round((m[4] === 'px' ? +m[3] : +m[3] * REM) * 10) / 10);
+    }
+    const TW = { 'text-xs': 12, 'text-sm': 14, 'text-base': 16, 'text-lg': 18, 'text-xl': 20, 'text-2xl': 24, 'text-3xl': 30, 'text-4xl': 36, 'text-5xl': 48, 'text-6xl': 60, 'text-7xl': 72, 'text-8xl': 96, 'text-9xl': 128 };
+    for (const [cls, px] of Object.entries(TW)) { if (new RegExp(`\\b${cls}\\b`).test(content)) sizes.add(px); }
+    if (sizes.size < 3) return [];
+    const sorted = [...sizes].sort((a, b) => a - b);
+    const ratio = sorted[sorted.length - 1] / sorted[0];
+    if (ratio >= 2.0) return [];
+    const lines = content.split('\n');
+    let line = 1;
+    for (let i = 0; i < lines.length; i++) { if (/font-size/i.test(lines[i]) || /\btext-(?:xs|sm|base|lg|xl|\d)/i.test(lines[i])) { line = i + 1; break; } }
+    return [finding('flat-type-hierarchy', filePath, `Sizes: ${sorted.map(s => s + 'px').join(', ')} (ratio ${ratio.toFixed(1)}:1)`, line)];
+  },
+  // Monotonous spacing (regex)
+  (content, filePath) => {
+    const vals = [];
+    let m;
+    const pxRe = /(?:padding|margin)(?:-(?:top|right|bottom|left))?\s*:\s*(\d+)px/gi;
+    while ((m = pxRe.exec(content)) !== null) { const v = +m[1]; if (v > 0 && v < 200) vals.push(v); }
+    const remRe = /(?:padding|margin)(?:-(?:top|right|bottom|left))?\s*:\s*([\d.]+)rem/gi;
+    while ((m = remRe.exec(content)) !== null) { const v = Math.round(parseFloat(m[1]) * 16); if (v > 0 && v < 200) vals.push(v); }
+    const gapRe = /gap\s*:\s*(\d+)px/gi;
+    while ((m = gapRe.exec(content)) !== null) vals.push(+m[1]);
+    const twRe = /\b(?:p|px|py|pt|pb|pl|pr|m|mx|my|mt|mb|ml|mr|gap)-(\d+)\b/g;
+    while ((m = twRe.exec(content)) !== null) vals.push(+m[1] * 4);
+    const rounded = vals.map(v => Math.round(v / 4) * 4);
+    if (rounded.length < 10) return [];
+    const counts = {};
+    for (const v of rounded) counts[v] = (counts[v] || 0) + 1;
+    const maxCount = Math.max(...Object.values(counts));
+    const pct = maxCount / rounded.length;
+    const unique = [...new Set(rounded)].filter(v => v > 0);
+    if (pct <= 0.6 || unique.length > 3) return [];
+    const dominant = Object.entries(counts).sort((a, b) => b[1] - a[1])[0][0];
+    return [finding('monotonous-spacing', filePath, `~${dominant}px used ${maxCount}/${rounded.length} times (${Math.round(pct * 100)}%)`)];
+  },
+  // Em-dash overuse: 5+ em-dashes or "--" in body text content
+  // (occasional em-dash use in prose is fine; the pattern fires only
+  // when count crosses into AI-cadence territory).
+  (content, filePath) => {
+    const text = stripHtmlToText(content);
+    let count = 0;
+    const re = /[—]|--(?=\S)/g;
+    while (re.exec(text) !== null) count++;
+    if (count < 5) return [];
+    return [finding('em-dash-overuse', filePath, `${count} em-dashes in body text`)];
+  },
+  // Marketing buzzwords: SaaS phrase list
+  (content, filePath) => {
+    const text = stripHtmlToText(content);
+    const lower = text.toLowerCase();
+    const BUZZWORDS = [
+      'streamline your', 'empower your', 'supercharge your',
+      'unleash your', 'unleash the power', 'leverage the power',
+      'built for the modern', 'trusted by leading', 'trusted by the world',
+      'best-in-class', 'industry-leading', 'world-class', 'enterprise-grade',
+      'next-generation', 'cutting-edge', 'transform your business',
+      'revolutionize', 'game-changer', 'game changing',
+      'mission-critical', 'best of breed', 'future-proof', 'future proof',
+      'seamless experience', 'seamlessly integrate',
+      'drive engagement', 'drive growth', 'drive results',
+      'harness the power',
+    ];
+    let count = 0;
+    let firstSample = '';
+    for (const phrase of BUZZWORDS) {
+      let from = 0;
+      while (true) {
+        const idx = lower.indexOf(phrase, from);
+        if (idx === -1) break;
+        count++;
+        if (!firstSample) {
+          firstSample = text.slice(Math.max(0, idx - 12), Math.min(text.length, idx + phrase.length + 12)).trim();
+        }
+        from = idx + phrase.length;
+      }
+    }
+    if (count === 0) return [];
+    return [finding('marketing-buzzword', filePath, `${count} buzzword phrase${count === 1 ? '' : 's'}: "${firstSample}"`)];
+  },
+  // Numbered section markers (01 / 02 / 03 ...)
+  (content, filePath) => {
+    const text = stripHtmlToText(content);
+    const re = /\b(0[1-9]|1[0-2])\b/g;
+    const seen = new Set();
+    let m;
+    while ((m = re.exec(text)) !== null) seen.add(m[1]);
+    if (seen.size < 3) return [];
+    const sorted = [...seen].sort();
+    let sequential = 0;
+    for (let i = 1; i < sorted.length; i++) {
+      if (parseInt(sorted[i], 10) === parseInt(sorted[i - 1], 10) + 1) sequential++;
+    }
+    if (sequential < 2) return [];
+    return [finding('numbered-section-markers', filePath, `Sequence: ${sorted.slice(0, 6).join(', ')}`)];
+  },
+  // Aphoristic cadence: manufactured-contrast + short-rebuttal
+  (content, filePath) => {
+    const text = stripHtmlToText(content);
+    const NOT_A_RE = /\bNot an? [a-z][^.!?]{1,40}[.!]\s+[A-Z][^.!?]{1,60}[.!]/g;
+    const SHORT_REBUTTAL_RE = /\b[A-Z][^.!?]{4,80}[.!]\s+(No|Just)\s+[a-z][^.!?]{2,60}[.!]/g;
+    let count = 0;
+    let firstSample = '';
+    let m;
+    NOT_A_RE.lastIndex = 0;
+    while ((m = NOT_A_RE.exec(text)) !== null) {
+      count++;
+      if (!firstSample) firstSample = m[0].trim().slice(0, 80);
+    }
+    SHORT_REBUTTAL_RE.lastIndex = 0;
+    while ((m = SHORT_REBUTTAL_RE.exec(text)) !== null) {
+      count++;
+      if (!firstSample) firstSample = m[0].trim().slice(0, 80);
+    }
+    if (count < 3) return [];
+    return [finding('aphoristic-cadence', filePath, `${count} aphoristic constructions: "${firstSample}"`)];
+  },
+  // Dark glow (page-level: dark bg + colored box-shadow with blur)
+  (content, filePath) => {
+    // Check if page has a dark background
+    const darkBgRe = /background(?:-color)?\s*:\s*(?:#(?:0[0-9a-f]|1[0-9a-f]|2[0-3])[0-9a-f]{4}\b|#(?:0|1)[0-9a-f]{2}\b|rgb\(\s*(\d{1,2})\s*,\s*(\d{1,2})\s*,\s*(\d{1,2})\s*\))/gi;
+    const twDarkBg = /\bbg-(?:gray|slate|zinc|neutral|stone)-(?:9\d{2}|800)\b/;
+    const hasDarkBg = darkBgRe.test(content) || twDarkBg.test(content);
+    if (!hasDarkBg) return [];
+
+    // Check for colored box-shadow with blur > 4px
+    const shadowRe = /box-shadow\s*:\s*([^;{}]+)/gi;
+    let m;
+    while ((m = shadowRe.exec(content)) !== null) {
+      const val = m[1];
+      const colorMatch = val.match(/rgba?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/);
+      if (!colorMatch) continue;
+      const [r, g, b] = [+colorMatch[1], +colorMatch[2], +colorMatch[3]];
+      if ((Math.max(r, g, b) - Math.min(r, g, b)) < 30) continue; // skip gray
+      // Check blur: look for pattern like "0 0 20px" (third number > 4)
+      const pxVals = [...val.matchAll(/(\d+)px|(?<![.\d])\b(0)\b(?![.\d])/g)].map(p => +(p[1] || p[2]));
+      if (pxVals.length >= 3 && pxVals[2] > 4) {
+        const lines = content.substring(0, m.index).split('\n');
+        return [finding('dark-glow', filePath, `Colored glow (rgb(${r},${g},${b})) on dark page`, lines.length)];
+      }
+    }
+    return [];
+  },
+];
+
+// ---------------------------------------------------------------------------
+// Style block extraction (Vue/Svelte <style> blocks)
+// ---------------------------------------------------------------------------
+
+function extractStyleBlocks(content, ext) {
+  ext = ext.toLowerCase();
+  if (ext !== '.vue' && ext !== '.svelte') return [];
+  const blocks = [];
+  const re = /<style[^>]*>([\s\S]*?)<\/style>/gi;
+  let m;
+  while ((m = re.exec(content)) !== null) {
+    const before = content.substring(0, m.index);
+    const startLine = before.split('\n').length + 1;
+    blocks.push({ content: m[1], startLine });
+  }
+  return blocks;
+}
+
+// ---------------------------------------------------------------------------
+// CSS-in-JS extraction (styled-components, emotion)
+// ---------------------------------------------------------------------------
+
+const CSS_IN_JS_EXTENSIONS = new Set(['.js', '.ts', '.jsx', '.tsx']);
+
+function extractCSSinJS(content, ext) {
+  ext = ext.toLowerCase();
+  if (!CSS_IN_JS_EXTENSIONS.has(ext)) return [];
+  const blocks = [];
+  const re = /(?:styled(?:\.\w+|\([^)]+\))|css)\s*`([\s\S]*?)`/g;
+  let m;
+  while ((m = re.exec(content)) !== null) {
+    const before = content.substring(0, m.index);
+    const startLine = before.split('\n').length;
+    blocks.push({ content: m[1], startLine });
+  }
+  return blocks;
+}
+
+function runRegexMatchers(lines, filePath, lineOffset = 0, blockContext = null, options = {}) {
+  const { profile, phase = 'regex-matchers' } = options || {};
+  const findings = [];
+  if (!profile) {
+    for (const matcher of REGEX_MATCHERS) {
+      for (let i = 0; i < lines.length; i++) {
+        const line = lines[i];
+        matcher.regex.lastIndex = 0;
+        let m;
+        while ((m = matcher.regex.exec(line)) !== null) {
+          // For extracted blocks, use nearby lines as context for multi-line CSS patterns
+          const context = blockContext
+            ? lines.slice(Math.max(0, i - 3), Math.min(lines.length, i + 4)).join(' ')
+            : line;
+          if (matcher.test(m, context)) {
+            findings.push(finding(matcher.id, filePath, matcher.fmt(m, context), i + 1 + lineOffset));
+          }
+        }
+      }
+    }
+    return findings;
+  }
+
+  for (const matcher of REGEX_MATCHERS) {
+    const matcherFindings = profileFindings(profile, {
+      engine: 'regex',
+      phase,
+      ruleId: matcher.id,
+      target: filePath,
+    }, () => {
+      const matches = [];
+      for (let i = 0; i < lines.length; i++) {
+        const line = lines[i];
+        matcher.regex.lastIndex = 0;
+        let m;
+        while ((m = matcher.regex.exec(line)) !== null) {
+          // For extracted blocks, use nearby lines as context for multi-line CSS patterns
+          const context = blockContext
+            ? lines.slice(Math.max(0, i - 3), Math.min(lines.length, i + 4)).join(' ')
+            : line;
+          if (matcher.test(m, context)) {
+            matches.push(finding(matcher.id, filePath, matcher.fmt(m, context), i + 1 + lineOffset));
+          }
+        }
+      }
+      return matches;
+    });
+    findings.push(...matcherFindings);
+  }
+  return findings;
+}
+
+/** Page-level analyzers that scan rendered text content (em-dash use,
+ *  buzzword phrases, numbered section markers, aphoristic cadence).
+ *  These are detector-agnostic — they work on any HTML/text source
+ *  and don't need a parsed DOM. Exported so detectHtml can call them
+ *  for `.html` files (which otherwise skip the regex engine). */
+const TEXT_CONTENT_ANALYZER_IDS = [
+  'em-dash-overuse',
+  'marketing-buzzword',
+  'numbered-section-markers',
+  'aphoristic-cadence',
+];
+
+function runTextContentAnalyzers(content, filePath, options = {}) {
+  const profile = options?.profile;
+  if (!isFullPage(content)) return [];
+  // The 4 text-content analyzers are at indices 3-6 in REGEX_ANALYZERS.
+  const findings = [];
+  for (let i = 0; i < TEXT_CONTENT_ANALYZER_IDS.length; i++) {
+    const analyzer = REGEX_ANALYZERS[3 + i];
+    const ruleId = TEXT_CONTENT_ANALYZER_IDS[i];
+    findings.push(...profileFindings(profile, {
+      engine: 'regex',
+      phase: 'text-content',
+      ruleId,
+      target: filePath,
+    }, () => analyzer(content, filePath)));
+  }
+  return findings;
+}
+
+function detectText(content, filePath, options = {}) {
+  const profile = options?.profile;
+  const findings = [];
+  const lines = content.split('\n');
+  const ext = filePath ? (filePath.match(/\.\w+$/)?.[0] || '').toLowerCase() : '';
+
+  // Run regex matchers on the full file content (catches Tailwind classes, inline styles)
+  // Enable block context for CSS files where related properties span multiple lines
+  const cssLike = new Set(['.css', '.scss', '.less']);
+  findings.push(...runRegexMatchers(lines, filePath, 0, cssLike.has(ext) || null, {
+    profile,
+    phase: 'source',
+  }));
+
+  // Extract and scan <style> blocks from Vue/Svelte SFCs
+  const styleBlocks = profile
+    ? profileStep(profile, {
+      engine: 'regex',
+      phase: 'extract',
+      ruleId: 'style-blocks',
+      target: filePath,
+    }, () => extractStyleBlocks(content, ext))
+    : extractStyleBlocks(content, ext);
+  for (const block of styleBlocks) {
+    const blockLines = block.content.split('\n');
+    findings.push(...runRegexMatchers(blockLines, filePath, block.startLine - 1, true, {
+      profile,
+      phase: 'style-block',
+    }));
+  }
+
+  // Extract and scan CSS-in-JS template literals
+  const cssJsBlocks = profile
+    ? profileStep(profile, {
+      engine: 'regex',
+      phase: 'extract',
+      ruleId: 'css-in-js',
+      target: filePath,
+    }, () => extractCSSinJS(content, ext))
+    : extractCSSinJS(content, ext);
+  for (const block of cssJsBlocks) {
+    const blockLines = block.content.split('\n');
+    findings.push(...runRegexMatchers(blockLines, filePath, block.startLine - 1, true, {
+      profile,
+      phase: 'css-in-js',
+    }));
+  }
+
+  // Deduplicate findings (same antipattern + similar snippet, within 2 lines)
+  const deduped = [];
+  for (const f of findings) {
+    const isDupe = deduped.some(d =>
+      d.antipattern === f.antipattern &&
+      d.snippet === f.snippet &&
+      Math.abs(d.line - f.line) <= 2
+    );
+    if (!isDupe) deduped.push(f);
+  }
+
+  // Page-level analyzers only run on full pages
+  if (isFullPage(content)) {
+    const analyzerIds = [
+      'single-font',
+      'flat-type-hierarchy',
+      'monotonous-spacing',
+      'em-dash-overuse',
+      'marketing-buzzword',
+      'numbered-section-markers',
+      'aphoristic-cadence',
+      'dark-glow',
+    ];
+    for (let i = 0; i < REGEX_ANALYZERS.length; i++) {
+      const analyzer = REGEX_ANALYZERS[i];
+      deduped.push(...profileFindings(profile, {
+        engine: 'regex',
+        phase: 'page-analyzer',
+        ruleId: analyzerIds[i] || `analyzer-${i + 1}`,
+        target: filePath,
+      }, () => analyzer(content, filePath)));
+    }
+  }
+
+  return filterByProviders(deduped, options?.providers);
+}
+
+export {
+  REGEX_MATCHERS,
+  REGEX_ANALYZERS,
+  TEXT_CONTENT_ANALYZER_IDS,
+  extractStyleBlocks,
+  extractCSSinJS,
+  runRegexMatchers,
+  runTextContentAnalyzers,
+  detectText,
+};

.agents/skills/impeccable/scripts/detector/engines/static-html/css-cascade.mjs

@@ -0,0 +1,986 @@
+import fs from 'node:fs';
+import path from 'node:path';
+
+import { profileStep, recordProfileEvent } from '../../profile/profiler.mjs';
+import { parseAnyColor, resolveLengthPx, resolveVarRefs } from '../../rules/checks.mjs';
+
+// ---------------------------------------------------------------------------
+// jsdom CSS-variable border override map
+// ---------------------------------------------------------------------------
+//
+// jsdom's CSSOM silently drops any border shorthand that contains a var()
+// reference — the computed style for the element then shows empty width,
+// empty style, and a default black color. That's enough to hide the most
+// common real-world side-tab pattern in AI-generated pages:
+//
+//   :root { --brand: #87a8ff; }
+//   .card { border-left: 5px solid var(--brand); border-radius: 4px; }
+//
+// Real browsers (and therefore the browser detector path) resolve var()
+// natively, so this only affects the Node jsdom path.
+//
+// This pre-pass walks the stylesheets, finds any rule whose per-side or
+// all-sides border property contains var(), resolves the var() against
+// :root-level custom properties (read from the documentElement's computed
+// style, which jsdom DOES handle correctly), and attaches the resolved
+// width+color to every element that matches the rule's selector. The
+// Node-side `checkElementBorders` adapter consumes that map as a fallback
+// whenever jsdom's computed style came back empty.
+//
+// Limitations (intentional, to keep the pass simple):
+//   * Only :root-level custom properties are resolved. Scoped overrides on
+//     descendants are not tracked — uncommon in practice and would require
+//     a per-element cascade walk.
+//   * @media / @supports wrapped rules are ignored (jsdom often mishandles
+//     these anyway).
+//   * The fallback only fills sides that jsdom left empty, so any rule
+//     whose border parses normally still wins via the computed style.
+
+const BORDER_SHORTHAND_RE = /^(\d+(?:\.\d+)?)px\s+(solid|dashed|dotted|double|groove|ridge|inset|outset)\s+(.+)$/i;
+
+// isNeutralColor only understands rgba()/oklch()/lch()/lab()/hsl()/hwb().
+// CSS variables typically hold hex or named colors, so normalize those to
+// rgb() before handing the value off to the shared check. Anything we don't
+// recognise is passed through unchanged — isNeutralColor then treats it as
+// non-neutral, which is the safer default (matches the oklch-era bugfix).
+const NAMED_COLORS = {
+  white: [255, 255, 255], black: [0, 0, 0], gray: [128, 128, 128],
+  grey: [128, 128, 128], silver: [192, 192, 192], red: [255, 0, 0],
+  green: [0, 128, 0], blue: [0, 0, 255], yellow: [255, 255, 0],
+};
+
+function normalizeColorForCheck(value) {
+  if (!value) return value;
+  const v = value.trim();
+  const hex6 = v.match(/^#([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i);
+  if (hex6) {
+    const [r, g, b] = [parseInt(hex6[1], 16), parseInt(hex6[2], 16), parseInt(hex6[3], 16)];
+    return `rgb(${r}, ${g}, ${b})`;
+  }
+  const hex3 = v.match(/^#([0-9a-f])([0-9a-f])([0-9a-f])$/i);
+  if (hex3) {
+    const [r, g, b] = [
+      parseInt(hex3[1] + hex3[1], 16),
+      parseInt(hex3[2] + hex3[2], 16),
+      parseInt(hex3[3] + hex3[3], 16),
+    ];
+    return `rgb(${r}, ${g}, ${b})`;
+  }
+  const named = NAMED_COLORS[v.toLowerCase()];
+  if (named) return `rgb(${named[0]}, ${named[1]}, ${named[2]})`;
+  return v;
+}
+
+function buildBorderOverrideMap(document, window) {
+  const map = new Map();
+  const rootStyle = window.getComputedStyle(document.documentElement);
+
+  function resolveVar(value, depth = 0) {
+    if (!value || depth > 10 || !value.includes('var(')) return value;
+    return value.replace(
+      /var\(\s*(--[\w-]+)\s*(?:,\s*([^)]+))?\s*\)/g,
+      (_, name, fallback) => {
+        const v = rootStyle.getPropertyValue(name).trim();
+        if (v) return resolveVar(v, depth + 1);
+        if (fallback) return resolveVar(fallback.trim(), depth + 1);
+        return '';
+      }
+    );
+  }
+
+  function parseShorthand(text) {
+    const m = text.trim().match(BORDER_SHORTHAND_RE);
+    if (!m) return null;
+    return { width: parseFloat(m[1]), color: normalizeColorForCheck(m[3]) };
+  }
+
+  // Read from the per-property accessors on rule.style. jsdom preserves
+  // each border-* shorthand it parsed, even when the overall cssText has
+  // been truncated (e.g. a `border: 1px solid var(...)` followed by a
+  // `border-left: ...` loses the first declaration but keeps the second).
+  const SIDE_PROPS = [
+    ['borderLeft', 'Left'],
+    ['borderRight', 'Right'],
+    ['borderTop', 'Top'],
+    ['borderBottom', 'Bottom'],
+    ['borderInlineStart', 'Left'],
+    ['borderInlineEnd', 'Right'],
+  ];
+
+  for (const sheet of document.styleSheets) {
+    let rules;
+    try { rules = sheet.cssRules || []; } catch { continue; }
+    for (const rule of rules) {
+      // CSSStyleRule only; skip @media / @keyframes / @supports wrappers.
+      if (rule.type !== 1 || !rule.style || !rule.selectorText) continue;
+
+      const perSide = {};
+
+      for (const [prop, side] of SIDE_PROPS) {
+        const val = rule.style[prop];
+        if (!val || !val.includes('var(')) continue;
+        const parsed = parseShorthand(resolveVar(val));
+        if (parsed && parsed.color) perSide[side] = parsed;
+      }
+
+      // Uniform `border: <w> <style> var(...)` applies to every side the
+      // per-side map didn't already claim.
+      const borderAll = rule.style.border;
+      if (borderAll && borderAll.includes('var(')) {
+        const parsed = parseShorthand(resolveVar(borderAll));
+        if (parsed && parsed.color) {
+          for (const s of ['Top', 'Right', 'Bottom', 'Left']) {
+            if (!perSide[s]) perSide[s] = parsed;
+          }
+        }
+      }
+
+      // Longhand `border-*-color: var(...)` with width/style in separate
+      // declarations. Rare in AI-generated pages, but cheap to cover.
+      for (const [prop, side] of [
+        ['borderLeftColor', 'Left'],
+        ['borderRightColor', 'Right'],
+        ['borderTopColor', 'Top'],
+        ['borderBottomColor', 'Bottom'],
+      ]) {
+        const val = rule.style[prop];
+        if (!val || !val.includes('var(')) continue;
+        const resolved = resolveVar(val).trim();
+        if (!resolved) continue;
+        // Width may or may not come from this rule — that's fine; the
+        // adapter only substitutes the color when jsdom left it as a
+        // literal var() string.
+        if (!perSide[side]) perSide[side] = { width: 0, color: normalizeColorForCheck(resolved) };
+      }
+
+      if (Object.keys(perSide).length === 0) continue;
+
+      let matched;
+      try { matched = document.querySelectorAll(rule.selectorText); }
+      catch { continue; }
+
+      for (const el of matched) {
+        const existing = map.get(el);
+        if (existing) {
+          // Later rules overwrite earlier ones — approximates source-order
+          // cascade for equal-specificity rules and is good enough for the
+          // uncontested var()-dropped sides we're trying to recover.
+          Object.assign(existing, perSide);
+        } else {
+          map.set(el, { ...perSide });
+        }
+      }
+    }
+  }
+
+  return map;
+}
+
+// Strip `@layer NAME { … }` wrappers from a CSS / HTML source, leaving
+// the inner rules as flat CSS. jsdom doesn't implement CSS @layer, so
+// any rule inside a layer block becomes invisible to getComputedStyle.
+// Tailwind v4 makes this ubiquitous: every utility class lives in
+// `@layer utilities`, and Preflight lives in `@layer base`. Without
+// unwrapping, every Tailwind-styled element returns empty computed
+// styles. We walk the source character-by-character, balancing braces
+// so we correctly handle nested style rules inside the layer block.
+function unwrapCssAtLayer(source) {
+  if (!source || !source.includes('@layer')) return source;
+  // Find `@layer <name>? {` openers. The match starts at the @, and
+  // we then balance braces from the opening { onward.
+  const re = /@layer\b[^{;]*\{/g;
+  let out = '';
+  let lastIdx = 0;
+  let m;
+  while ((m = re.exec(source)) !== null) {
+    const openStart = m.index;
+    const openEnd = m.index + m[0].length; // position right after `{`
+    let depth = 1;
+    let i = openEnd;
+    while (i < source.length && depth > 0) {
+      const c = source.charCodeAt(i);
+      if (c === 0x7b /* { */) depth++;
+      else if (c === 0x7d /* } */) depth--;
+      i++;
+    }
+    if (depth !== 0) {
+      // Unbalanced — bail and return source unchanged.
+      return source;
+    }
+    // Emit everything before the @layer, then the inner contents
+    // (between the opening { and the matched closing }), then advance.
+    out += source.slice(lastIdx, openStart);
+    out += source.slice(openEnd, i - 1); // i-1 = position of the closing }
+    lastIdx = i;
+    re.lastIndex = i;
+  }
+  out += source.slice(lastIdx);
+  return out;
+}
+
+// ---------------------------------------------------------------------------
+// Static HTML/CSS detection (default for local HTML files)
+// ---------------------------------------------------------------------------
+
+const STATIC_INHERITED_PROPS = new Set([
+  'color', 'fontFamily', 'fontSize', 'fontStyle', 'fontWeight',
+  'lineHeight', 'letterSpacing', 'textTransform', 'textAlign', 'hyphens',
+  'webkitHyphens',
+]);
+
+const STATIC_DEFAULT_STYLE = {
+  color: 'rgb(0, 0, 0)',
+  backgroundColor: 'rgba(0, 0, 0, 0)',
+  backgroundImage: 'none',
+  borderTopWidth: '0px',
+  borderRightWidth: '0px',
+  borderBottomWidth: '0px',
+  borderLeftWidth: '0px',
+  borderTopColor: 'rgb(0, 0, 0)',
+  borderRightColor: 'rgb(0, 0, 0)',
+  borderBottomColor: 'rgb(0, 0, 0)',
+  borderLeftColor: 'rgb(0, 0, 0)',
+  borderRadius: '0px',
+  outlineWidth: '0px',
+  outlineColor: 'rgb(0, 0, 0)',
+  outlineStyle: 'none',
+  boxShadow: 'none',
+  fontFamily: '',
+  fontSize: '16px',
+  fontStyle: 'normal',
+  fontWeight: '400',
+  lineHeight: 'normal',
+  letterSpacing: 'normal',
+  textTransform: 'none',
+  textAlign: 'start',
+  hyphens: 'manual',
+  webkitHyphens: 'manual',
+  transitionProperty: '',
+  transitionTimingFunction: '',
+  animationName: '',
+  animationTimingFunction: '',
+  webkitBackgroundClip: '',
+  backgroundClip: '',
+  width: '',
+  height: '',
+  paddingTop: '0px',
+  paddingRight: '0px',
+  paddingBottom: '0px',
+  paddingLeft: '0px',
+  position: 'static',
+  display: '',
+  overflow: 'visible',
+  overflowX: 'visible',
+  overflowY: 'visible',
+};
+
+const STATIC_PROP_MAP = {
+  'background-color': 'backgroundColor',
+  'background-image': 'backgroundImage',
+  'background-clip': 'backgroundClip',
+  '-webkit-background-clip': 'webkitBackgroundClip',
+  'border-radius': 'borderRadius',
+  'border-top-width': 'borderTopWidth',
+  'border-right-width': 'borderRightWidth',
+  'border-bottom-width': 'borderBottomWidth',
+  'border-left-width': 'borderLeftWidth',
+  'border-top-color': 'borderTopColor',
+  'border-right-color': 'borderRightColor',
+  'border-bottom-color': 'borderBottomColor',
+  'border-left-color': 'borderLeftColor',
+  'outline-width': 'outlineWidth',
+  'outline-color': 'outlineColor',
+  'outline-style': 'outlineStyle',
+  'box-shadow': 'boxShadow',
+  'font-family': 'fontFamily',
+  'font-size': 'fontSize',
+  'font-style': 'fontStyle',
+  'font-weight': 'fontWeight',
+  'line-height': 'lineHeight',
+  'letter-spacing': 'letterSpacing',
+  'text-transform': 'textTransform',
+  'text-align': 'textAlign',
+  'hyphens': 'hyphens',
+  '-webkit-hyphens': 'webkitHyphens',
+  'transition-property': 'transitionProperty',
+  'transition-timing-function': 'transitionTimingFunction',
+  'animation-name': 'animationName',
+  'animation-timing-function': 'animationTimingFunction',
+  'width': 'width',
+  'height': 'height',
+  'padding-top': 'paddingTop',
+  'padding-right': 'paddingRight',
+  'padding-bottom': 'paddingBottom',
+  'padding-left': 'paddingLeft',
+  'position': 'position',
+  'display': 'display',
+  'overflow': 'overflow',
+  'overflow-x': 'overflowX',
+  'overflow-y': 'overflowY',
+};
+
+const STATIC_NAMED_COLORS = {
+  black: { r: 0, g: 0, b: 0, a: 1 },
+  white: { r: 255, g: 255, b: 255, a: 1 },
+  transparent: { r: 0, g: 0, b: 0, a: 0 },
+  gray: { r: 128, g: 128, b: 128, a: 1 },
+  grey: { r: 128, g: 128, b: 128, a: 1 },
+  silver: { r: 192, g: 192, b: 192, a: 1 },
+  red: { r: 255, g: 0, b: 0, a: 1 },
+  green: { r: 0, g: 128, b: 0, a: 1 },
+  blue: { r: 0, g: 0, b: 255, a: 1 },
+};
+
+function splitCssList(value) {
+  const parts = [];
+  let depth = 0, quote = '', start = 0;
+  for (let i = 0; i < value.length; i++) {
+    const ch = value[i];
+    if (quote) {
+      if (ch === quote && value[i - 1] !== '\\') quote = '';
+      continue;
+    }
+    if (ch === '"' || ch === "'") { quote = ch; continue; }
+    if (ch === '(' || ch === '[') depth++;
+    else if (ch === ')' || ch === ']') depth = Math.max(0, depth - 1);
+    else if (ch === ',' && depth === 0) {
+      parts.push(value.slice(start, i).trim());
+      start = i + 1;
+    }
+  }
+  const tail = value.slice(start).trim();
+  if (tail) parts.push(tail);
+  return parts;
+}
+
+function splitCssTokens(value) {
+  const tokens = [];
+  let depth = 0, quote = '', current = '';
+  for (let i = 0; i < value.length; i++) {
+    const ch = value[i];
+    if (quote) {
+      current += ch;
+      if (ch === quote && value[i - 1] !== '\\') quote = '';
+      continue;
+    }
+    if (ch === '"' || ch === "'") { quote = ch; current += ch; continue; }
+    if (ch === '(') { depth++; current += ch; continue; }
+    if (ch === ')') { depth = Math.max(0, depth - 1); current += ch; continue; }
+    if (/\s/.test(ch) && depth === 0) {
+      if (current) { tokens.push(current); current = ''; }
+      continue;
+    }
+    current += ch;
+  }
+  if (current) tokens.push(current);
+  return tokens;
+}
+
+function cssPropToCamel(prop) {
+  if (!prop) return prop;
+  const mapped = STATIC_PROP_MAP[prop];
+  if (mapped) return mapped;
+  return prop.replace(/-([a-z])/g, (_m, ch) => ch.toUpperCase());
+}
+
+function staticColorToCss(c) {
+  if (!c) return '';
+  if (c.a != null && c.a < 1) return `rgba(${c.r}, ${c.g}, ${c.b}, ${Number(c.a.toFixed(3))})`;
+  return `rgb(${c.r}, ${c.g}, ${c.b})`;
+}
+
+function parseStaticColor(value) {
+  const parsed = parseAnyColor(value);
+  if (parsed) return parsed;
+  const named = STATIC_NAMED_COLORS[String(value || '').trim().toLowerCase()];
+  return named ? { ...named } : null;
+}
+
+function extractStaticColor(value) {
+  if (!value) return '';
+  const raw = String(value).trim();
+  if (/^var\(/i.test(raw)) return raw;
+  const colorLike = raw.match(/(?:rgba?\([^)]+\)|oklch\([^)]+\)|oklab\([^)]+\)|lch\([^)]+\)|lab\([^)]+\)|hsla?\([^)]+\)|hwb\([^)]+\)|#[0-9a-f]{3,8}\b|\b(?:black|white|gray|grey|silver|red|green|blue|transparent)\b)/i);
+  if (!colorLike) return '';
+  return colorLike[0];
+}
+
+function normalizeStaticCssValue(prop, value, customProps, parentStyle, currentStyle = null) {
+  let resolved = resolveVarRefs(String(value || '').trim(), customProps);
+  if (resolved === 'inherit') return parentStyle?.[prop] || STATIC_DEFAULT_STYLE[prop] || '';
+  const isModernBorderColor = /^border[A-Z][a-z]+Color$/.test(prop) && /^(?:oklch|oklab|lch|lab|hsl|hwb)\(/i.test(resolved);
+  if (!isModernBorderColor && (/color$/i.test(prop) || prop === 'color' || prop === 'backgroundColor')) {
+    const parsed = parseStaticColor(resolved);
+    if (parsed) resolved = staticColorToCss(parsed);
+  }
+  if (prop === 'fontSize') {
+    const base = parseFloat(parentStyle?.fontSize) || 16;
+    const px = resolveLengthPx(resolved, base);
+    if (px != null) resolved = `${px}px`;
+  }
+  if (prop === 'letterSpacing') {
+    const base = parseFloat(currentStyle?.fontSize || parentStyle?.fontSize) || 16;
+    const px = resolveLengthPx(resolved, base);
+    if (px != null) resolved = `${px}px`;
+  }
+  if (prop === 'lineHeight' && resolved !== 'normal') {
+    const base = parseFloat(currentStyle?.fontSize || parentStyle?.fontSize) || 16;
+    const px = resolveLengthPx(resolved, base);
+    if (px != null) resolved = `${px}px`;
+  }
+  return resolved;
+}
+
+function expandStaticBoxValues(tokens) {
+  if (tokens.length === 0) return ['0px', '0px', '0px', '0px'];
+  if (tokens.length === 1) return [tokens[0], tokens[0], tokens[0], tokens[0]];
+  if (tokens.length === 2) return [tokens[0], tokens[1], tokens[0], tokens[1]];
+  if (tokens.length === 3) return [tokens[0], tokens[1], tokens[2], tokens[1]];
+  return [tokens[0], tokens[1], tokens[2], tokens[3]];
+}
+
+function parseStaticBorder(value) {
+  const tokens = splitCssTokens(value);
+  let width = '', color = '';
+  for (const token of tokens) {
+    if (!width && /^-?[\d.]+(?:px|rem|em|%)$/.test(token)) width = token;
+    if (!color) color = extractStaticColor(token);
+  }
+  return { width, color };
+}
+
+function parseStaticFont(value) {
+  const out = [];
+  const slashParts = value.match(/(?:^|\s)([\d.]+(?:px|rem|em|%))(?:\/([^\s]+))?/);
+  if (/\bitalic\b/i.test(value)) out.push(['fontStyle', 'italic']);
+  const weight = value.match(/\b([1-9]00|bold|normal|lighter|bolder)\b/i);
+  if (weight) out.push(['fontWeight', weight[1]]);
+  if (slashParts) {
+    out.push(['fontSize', slashParts[1]]);
+    if (slashParts[2]) out.push(['lineHeight', slashParts[2]]);
+    const familyStart = value.indexOf(slashParts[0]) + slashParts[0].length;
+    const family = value.slice(familyStart).trim();
+    if (family) out.push(['fontFamily', family]);
+  }
+  return out;
+}
+
+function parseStaticTransition(value) {
+  const props = [];
+  const timings = [];
+  for (const item of splitCssList(value)) {
+    const tokens = splitCssTokens(item);
+    const timing = tokens.find(token => /^(?:ease|linear|step-|cubic-bezier\()/i.test(token));
+    if (timing) timings.push(timing);
+    const prop = tokens.find(token => /^[a-z-]+$/i.test(token) && !/^(?:ease|linear|infinite|alternate|forwards|backwards|both|normal|none)$/.test(token) && !/s$/.test(token));
+    if (prop) props.push(prop);
+  }
+  return {
+    property: props.join(', '),
+    timing: timings.join(', '),
+  };
+}
+
+function parseStaticAnimation(value) {
+  const names = [];
+  const timings = [];
+  for (const item of splitCssList(value)) {
+    const tokens = splitCssTokens(item);
+    const timing = tokens.find(token => /^(?:ease|linear|step-|cubic-bezier\()/i.test(token));
+    if (timing) timings.push(timing);
+    const name = tokens.find(token =>
+      /^[a-z_-][\w-]*$/i.test(token) &&
+      !/^(?:ease|linear|infinite|alternate|forwards|backwards|both|normal|none|running|paused)$/.test(token)
+    );
+    if (name) names.push(name);
+  }
+  return {
+    name: names.join(', '),
+    timing: timings.join(', '),
+  };
+}
+
+function expandStaticDeclaration(prop, value) {
+  const p = prop.toLowerCase();
+  const v = String(value || '').trim();
+  if (!v) return [];
+  if (p.startsWith('--')) return [[p, v]];
+  if (p === 'background') {
+    const out = [];
+    const hasImage = /gradient|url\(/i.test(v);
+    if (hasImage) out.push(['backgroundImage', v]);
+    const beforeImage = hasImage ? v.split(/(?:repeating-)?(?:linear|radial|conic)-gradient\(|url\(/i)[0] : v;
+    const color = extractStaticColor(hasImage ? beforeImage : v);
+    if (color) out.push(['backgroundColor', color]);
+    return out;
+  }
+  if (p === 'border') {
+    const parsed = parseStaticBorder(v);
+    const out = [];
+    for (const side of ['Top', 'Right', 'Bottom', 'Left']) {
+      if (parsed.width) out.push([`border${side}Width`, parsed.width]);
+      if (parsed.color) out.push([`border${side}Color`, parsed.color]);
+    }
+    return out;
+  }
+  if (p === 'outline') {
+    // `outline` shorthand: width | style | color, in any order. Reuse the
+    // border parser for width + color, then sniff a style keyword from the
+    // tokens (solid|dashed|...). `outline: 0` (single-token zero) zeros
+    // the width and effectively hides the outline.
+    const tokens = splitCssTokens(v);
+    const parsed = parseStaticBorder(v);
+    const styleToken = tokens.find(t =>
+      /^(none|hidden|solid|dashed|dotted|double|groove|ridge|inset|outset)$/i.test(t)
+    );
+    const out = [];
+    if (parsed.width) out.push(['outlineWidth', parsed.width]);
+    if (parsed.color) out.push(['outlineColor', parsed.color]);
+    if (styleToken) out.push(['outlineStyle', styleToken.toLowerCase()]);
+    // `outline: 0` with no other tokens: explicit zero width.
+    if (!parsed.width && /^0(?:px|rem|em|%)?$/.test(v.trim())) {
+      out.push(['outlineWidth', '0px']);
+    }
+    return out;
+  }
+  const sideMatch = p.match(/^border-(top|right|bottom|left)$/);
+  if (sideMatch) {
+    const parsed = parseStaticBorder(v);
+    const side = sideMatch[1][0].toUpperCase() + sideMatch[1].slice(1);
+    return [
+      ...(parsed.width ? [[`border${side}Width`, parsed.width]] : []),
+      ...(parsed.color ? [[`border${side}Color`, parsed.color]] : []),
+    ];
+  }
+  if (p === 'border-width') {
+    const vals = expandStaticBoxValues(splitCssTokens(v));
+    return [
+      ['borderTopWidth', vals[0]],
+      ['borderRightWidth', vals[1]],
+      ['borderBottomWidth', vals[2]],
+      ['borderLeftWidth', vals[3]],
+    ];
+  }
+  if (p === 'border-color') {
+    const vals = expandStaticBoxValues(splitCssTokens(v));
+    return [
+      ['borderTopColor', vals[0]],
+      ['borderRightColor', vals[1]],
+      ['borderBottomColor', vals[2]],
+      ['borderLeftColor', vals[3]],
+    ];
+  }
+  if (p === 'padding') {
+    const vals = expandStaticBoxValues(splitCssTokens(v));
+    return [
+      ['paddingTop', vals[0]],
+      ['paddingRight', vals[1]],
+      ['paddingBottom', vals[2]],
+      ['paddingLeft', vals[3]],
+    ];
+  }
+  if (p === 'font') return parseStaticFont(v);
+  if (p === 'transition') {
+    const parsed = parseStaticTransition(v);
+    return [
+      ...(parsed.property ? [['transitionProperty', parsed.property]] : []),
+      ...(parsed.timing ? [['transitionTimingFunction', parsed.timing]] : []),
+    ];
+  }
+  if (p === 'animation') {
+    const parsed = parseStaticAnimation(v);
+    return [
+      ...(parsed.name ? [['animationName', parsed.name]] : []),
+      ...(parsed.timing ? [['animationTimingFunction', parsed.timing]] : []),
+    ];
+  }
+  const mapped = cssPropToCamel(p);
+  if (STATIC_DEFAULT_STYLE[mapped] != null || STATIC_INHERITED_PROPS.has(mapped)) {
+    return [[mapped, v]];
+  }
+  return [];
+}
+
+function compareStaticPriority(a, b) {
+  if (!a) return true;
+  if (!!b.important !== !!a.important) return !!b.important;
+  if (!!b.inline !== !!a.inline) return !!b.inline;
+  for (let i = 0; i < 3; i++) {
+    if ((b.specificity[i] || 0) !== (a.specificity[i] || 0)) {
+      return (b.specificity[i] || 0) > (a.specificity[i] || 0);
+    }
+  }
+  return b.order >= a.order;
+}
+
+function staticSpecificity(selector) {
+  const noWhere = selector.replace(/:where\([^)]*\)/g, '');
+  const ids = (noWhere.match(/#[\w-]+/g) || []).length;
+  const classes = (noWhere.match(/\.[\w-]+|\[[^\]]+\]|:(?!:)[\w-]+(?:\([^)]*\))?/g) || []).length;
+  const stripped = noWhere
+    .replace(/#[\w-]+/g, ' ')
+    .replace(/\.[\w-]+|\[[^\]]+\]|:{1,2}[\w-]+(?:\([^)]*\))?/g, ' ')
+    .replace(/[*>+~(),]/g, ' ');
+  const types = (stripped.match(/\b[a-zA-Z][\w-]*\b/g) || []).length;
+  return [ids, classes, types];
+}
+
+function applyStaticDeclaration(specified, node, prop, value, meta) {
+  let map = specified.get(node);
+  if (!map) { map = new Map(); specified.set(node, map); }
+  for (const [expandedProp, expandedValue] of expandStaticDeclaration(prop, value)) {
+    const existing = map.get(expandedProp);
+    const next = { ...meta, prop: expandedProp, value: expandedValue };
+    if (compareStaticPriority(existing, next)) map.set(expandedProp, next);
+  }
+}
+
+function parseStaticStyleAttribute(styleText, orderBase = 0) {
+  const decls = [];
+  for (const part of String(styleText || '').split(';')) {
+    const idx = part.indexOf(':');
+    if (idx <= 0) continue;
+    const prop = part.slice(0, idx).trim();
+    let value = part.slice(idx + 1).trim();
+    const important = /!important\s*$/i.test(value);
+    value = value.replace(/\s*!important\s*$/i, '').trim();
+    decls.push({ prop, value, important, order: orderBase + decls.length });
+  }
+  return decls;
+}
+
+function collectStaticCssRules(cssText, csstree) {
+  const rules = [];
+  let ast;
+  try {
+    ast = csstree.parse(cssText, { positions: false, parseValue: true, parseCustomProperty: false });
+  } catch {
+    return rules;
+  }
+  let order = 0;
+  const walkList = (list, atRuleStack = []) => {
+    list?.forEach?.(node => {
+      if (node.type === 'Rule' && node.block) {
+        if (atRuleStack.some(name => /keyframes$/i.test(name))) return;
+        const selectorText = csstree.generate(node.prelude).trim();
+        const declarations = [];
+        node.block.children?.forEach?.(child => {
+          if (child.type !== 'Declaration') return;
+          declarations.push({
+            prop: child.property,
+            value: csstree.generate(child.value).trim(),
+            important: !!child.important,
+          });
+        });
+        for (const selector of splitCssList(selectorText)) {
+          if (selector) rules.push({ selector, declarations, specificity: staticSpecificity(selector), order: order++ });
+        }
+        return;
+      }
+      if (node.type === 'Atrule' && node.block) {
+        const name = String(node.name || '').toLowerCase();
+        if (name === 'media' || name === 'supports' || name === 'layer') {
+          walkList(node.block.children, [...atRuleStack, name]);
+        }
+      }
+    });
+  };
+  walkList(ast.children);
+  return rules;
+}
+
+class StaticElement {
+  constructor(node, doc) {
+    this.node = node;
+    this._doc = doc;
+    this.nodeType = 1;
+    this.tagName = String(node.name || '').toUpperCase();
+    this.nodeName = this.tagName;
+  }
+  get parentElement() {
+    let cur = this.node.parent;
+    while (cur && cur.type !== 'tag') cur = cur.parent;
+    return cur ? this._doc.wrap(cur) : null;
+  }
+  get previousElementSibling() {
+    let cur = this.node.prev;
+    while (cur && cur.type !== 'tag') cur = cur.prev;
+    return cur ? this._doc.wrap(cur) : null;
+  }
+  get children() {
+    return (this.node.children || []).filter(child => child.type === 'tag').map(child => this._doc.wrap(child));
+  }
+  get childNodes() {
+    return (this.node.children || []).map(child => {
+      if (child.type === 'text') return { nodeType: 3, textContent: child.data || '' };
+      if (child.type === 'tag') return this._doc.wrap(child);
+      return { nodeType: 8, textContent: child.data || '' };
+    });
+  }
+  get textContent() {
+    return this._doc.domutils.textContent(this.node);
+  }
+  get className() {
+    return this.getAttribute('class') || '';
+  }
+  get id() {
+    return this.getAttribute('id') || '';
+  }
+  getAttribute(name) {
+    return this.node.attribs?.[name] ?? null;
+  }
+  querySelector(selector) {
+    try {
+      const found = this._doc.selectOne(selector, this.node.children || []);
+      return found ? this._doc.wrap(found) : null;
+    } catch {
+      return null;
+    }
+  }
+  querySelectorAll(selector) {
+    try {
+      return this._doc.selectAll(selector, this.node.children || []).map(node => this._doc.wrap(node));
+    } catch {
+      return [];
+    }
+  }
+  closest(selector) {
+    let cur = this.node;
+    while (cur && cur.type === 'tag') {
+      try {
+        if (this._doc.is(cur, selector)) return this._doc.wrap(cur);
+      } catch {
+        return null;
+      }
+      cur = cur.parent;
+      while (cur && cur.type !== 'tag') cur = cur.parent;
+    }
+    return null;
+  }
+  contains(other) {
+    let cur = other?.node || null;
+    while (cur) {
+      if (cur === this.node) return true;
+      cur = cur.parent;
+    }
+    return false;
+  }
+}
+
+class StaticDocument {
+  constructor(root, modules) {
+    this.root = root;
+    this.selectAll = modules.selectAll;
+    this.selectOne = modules.selectOne;
+    this.is = modules.is;
+    this.domutils = modules.domutils;
+    this._wrappers = new WeakMap();
+    this._styleMap = new WeakMap();
+  }
+  wrap(node) {
+    let wrapped = this._wrappers.get(node);
+    if (!wrapped) {
+      wrapped = new StaticElement(node, this);
+      this._wrappers.set(node, wrapped);
+    }
+    return wrapped;
+  }
+  querySelectorAll(selector) {
+    try {
+      return this.selectAll(selector, this.root.children || []).map(node => this.wrap(node));
+    } catch {
+      return [];
+    }
+  }
+  querySelector(selector) {
+    try {
+      const found = this.selectOne(selector, this.root.children || []);
+      return found ? this.wrap(found) : null;
+    } catch {
+      return null;
+    }
+  }
+  get documentElement() {
+    return this.querySelector('html');
+  }
+  get body() {
+    return this.querySelector('body');
+  }
+  setStyle(node, style) {
+    this._styleMap.set(node, style);
+  }
+  getStyle(el) {
+    return this._styleMap.get(el.node) || makeStaticStyle();
+  }
+}
+
+function makeStaticStyle(values = {}) {
+  const style = { ...STATIC_DEFAULT_STYLE, ...values };
+  style.getPropertyValue = (prop) => {
+    const key = cssPropToCamel(prop);
+    return style[key] || style[prop] || '';
+  };
+  return style;
+}
+
+function buildStaticWindow(staticDoc) {
+  return {
+    document: staticDoc,
+    getComputedStyle: (el) => staticDoc.getStyle(el),
+  };
+}
+
+function collectStaticCssText(root, fileDir, profile, filePath, modules) {
+  const styleTexts = [];
+  for (const styleEl of modules.selectAll('style', root.children || [])) {
+    styleTexts.push(modules.domutils.textContent(styleEl));
+  }
+  const links = modules.selectAll('link', root.children || []);
+  for (const link of links) {
+    const rel = link.attribs?.rel || '';
+    const href = link.attribs?.href || '';
+    if (!/\bstylesheet\b/i.test(rel) || !href || /^(https?:)?\/\//i.test(href)) continue;
+    const cssPath = path.resolve(fileDir, href);
+    try {
+      const css = profileStep(profile, {
+        engine: 'static-html',
+        phase: 'preprocess',
+        ruleId: 'inline-linked-stylesheet',
+        target: filePath,
+        detail: href,
+      }, () => fs.readFileSync(cssPath, 'utf-8'));
+      styleTexts.push(css);
+    } catch { /* skip unreadable */ }
+  }
+  return styleTexts.join('\n');
+}
+
+function buildStaticStyleMap(root, staticDoc, cssText, modules, profile, filePath) {
+  const specified = new Map();
+  const allNodes = modules.selectAll('*', root.children || []);
+  const rules = profileStep(profile, {
+    engine: 'static-html',
+    phase: 'parse-css',
+    ruleId: 'css-rules',
+    target: filePath,
+  }, () => collectStaticCssRules(cssText, modules.csstree));
+
+  profileStep(profile, {
+    engine: 'static-html',
+    phase: 'selector-match',
+    ruleId: 'css-selectors',
+    target: filePath,
+  }, () => {
+    for (const rule of rules) {
+      let matched;
+      try {
+        matched = modules.selectAll(rule.selector, root.children || []);
+      } catch {
+        recordProfileEvent(profile, {
+          engine: 'static-html',
+          phase: 'selector-match',
+          ruleId: 'unsupported-selector',
+          target: filePath,
+          ms: 0,
+          findings: 0,
+          detail: rule.selector,
+        });
+        continue;
+      }
+      for (const node of matched) {
+        for (const decl of rule.declarations) {
+          applyStaticDeclaration(specified, node, decl.prop, decl.value, {
+            important: decl.important,
+            specificity: rule.specificity,
+            order: rule.order,
+            inline: false,
+          });
+        }
+      }
+    }
+
+    let inlineOrder = rules.length + 1;
+    for (const node of allNodes) {
+      const styleText = node.attribs?.style;
+      if (!styleText) continue;
+      for (const decl of parseStaticStyleAttribute(styleText, inlineOrder)) {
+        applyStaticDeclaration(specified, node, decl.prop, decl.value, {
+          important: decl.important,
+          specificity: [1, 0, 0],
+          order: decl.order,
+          inline: true,
+        });
+      }
+      inlineOrder += 1000;
+    }
+  });
+
+  const computeNode = (node, parentStyle = null, parentCustom = new Map()) => {
+    const specifiedMap = specified.get(node) || new Map();
+    const customProps = new Map(parentCustom);
+    for (const [prop, decl] of specifiedMap) {
+      if (prop.startsWith('--')) customProps.set(prop, resolveVarRefs(decl.value, customProps));
+    }
+    const values = {};
+    for (const prop of Object.keys(STATIC_DEFAULT_STYLE)) {
+      if (STATIC_INHERITED_PROPS.has(prop) && parentStyle?.[prop] != null) values[prop] = parentStyle[prop];
+      else values[prop] = STATIC_DEFAULT_STYLE[prop];
+    }
+    for (const [prop, decl] of specifiedMap) {
+      if (prop.startsWith('--')) continue;
+      values[prop] = normalizeStaticCssValue(prop, decl.value, customProps, parentStyle, values);
+    }
+    const style = makeStaticStyle(values);
+    staticDoc.setStyle(node, style);
+    for (const child of node.children || []) {
+      if (child.type === 'tag') computeNode(child, style, customProps);
+    }
+  };
+
+  profileStep(profile, {
+    engine: 'static-html',
+    phase: 'cascade',
+    ruleId: 'compute-styles',
+    target: filePath,
+  }, () => {
+    for (const child of root.children || []) {
+      if (child.type === 'tag') computeNode(child);
+    }
+  });
+}
+
+export {
+  BORDER_SHORTHAND_RE,
+  NAMED_COLORS,
+  normalizeColorForCheck,
+  buildBorderOverrideMap,
+  unwrapCssAtLayer,
+  STATIC_INHERITED_PROPS,
+  STATIC_DEFAULT_STYLE,
+  STATIC_PROP_MAP,
+  STATIC_NAMED_COLORS,
+  splitCssList,
+  splitCssTokens,
+  cssPropToCamel,
+  staticColorToCss,
+  parseStaticColor,
+  extractStaticColor,
+  normalizeStaticCssValue,
+  expandStaticBoxValues,
+  parseStaticBorder,
+  parseStaticFont,
+  parseStaticTransition,
+  parseStaticAnimation,
+  expandStaticDeclaration,
+  compareStaticPriority,
+  staticSpecificity,
+  applyStaticDeclaration,
+  parseStaticStyleAttribute,
+  collectStaticCssRules,
+  StaticElement,
+  StaticDocument,
+  makeStaticStyle,
+  buildStaticWindow,
+  collectStaticCssText,
+  buildStaticStyleMap,
+};

.agents/skills/impeccable/scripts/detector/engines/static-html/detect-html.mjs

@@ -0,0 +1,208 @@
+import fs from 'node:fs';
+import path from 'node:path';
+
+import { GENERIC_FONTS, OVERUSED_FONTS } from '../../shared/constants.mjs';
+import { isFullPage } from '../../shared/page.mjs';
+import { finding } from '../../findings.mjs';
+import { profileFindings, profileStep, profileStepAsync } from '../../profile/profiler.mjs';
+import {
+  checkElementBorders,
+  checkElementClippedOverflow,
+  checkElementColors,
+  checkElementGlow,
+  checkElementGptBorderShadow,
+  checkElementHeroEyebrow,
+  checkElementIconTile,
+  checkElementItalicSerif,
+  checkElementMotion,
+  checkElementOversizedH1,
+  checkElementQuality,
+  checkCreamPalette,
+  checkHtmlPatterns,
+  checkPageLayout,
+  checkPageQualityFromDoc,
+  checkRepeatedSectionKickersFromDoc,
+  resolveBackground,
+  resolveBorderRadiusPx,
+} from '../../rules/checks.mjs';
+import { filterByProviders } from '../../registry/antipatterns.mjs';
+import { detectText, runTextContentAnalyzers } from '../regex/detect-text.mjs';
+import {
+  StaticDocument,
+  buildStaticStyleMap,
+  buildStaticWindow,
+  collectStaticCssText,
+} from './css-cascade.mjs';
+
+function checkStaticPageTypography(document, window) {
+  const findings = [];
+  const fonts = new Set();
+  const overusedFound = new Set();
+  for (const el of document.querySelectorAll('p, h1, h2, h3, h4, h5, h6, li, td, th, dd, blockquote, figcaption, a, button, label, span, div')) {
+    const hasText = el.childNodes.some(n => n.nodeType === 3 && n.textContent.trim().length > 0);
+    if (!hasText) continue;
+    const ff = window.getComputedStyle(el).fontFamily || '';
+    const stack = ff.split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase());
+    const primary = stack.find(f => f && !GENERIC_FONTS.has(f));
+    if (!primary) continue;
+    fonts.add(primary);
+    if (OVERUSED_FONTS.has(primary)) overusedFound.add(primary);
+  }
+  for (const font of overusedFound) {
+    findings.push({ id: 'overused-font', snippet: `Primary font: ${font}` });
+  }
+  if (fonts.size === 1 && document.querySelectorAll('*').length >= 20) {
+    findings.push({ id: 'single-font', snippet: `only font used is ${[...fonts][0]}` });
+  }
+  const sizes = new Set();
+  for (const el of document.querySelectorAll('h1, h2, h3, h4, h5, h6, p, span, a, li, td, th, label, button, div')) {
+    const fontSize = parseFloat(window.getComputedStyle(el).fontSize);
+    if (fontSize >= 8 && fontSize < 200) sizes.add(Math.round(fontSize * 10) / 10);
+  }
+  if (sizes.size >= 3) {
+    const sorted = [...sizes].sort((a, b) => a - b);
+    const ratio = sorted[sorted.length - 1] / sorted[0];
+    if (ratio < 2.0) {
+      findings.push({ id: 'flat-type-hierarchy', snippet: `Sizes: ${sorted.map(s => s + 'px').join(', ')} (ratio ${ratio.toFixed(1)}:1)` });
+    }
+  }
+  return findings;
+}
+
+function checkElementBrokenImage(el) {
+  const src = (el.getAttribute && el.getAttribute('src')) ?? el.attribs?.src;
+  // Missing src attribute entirely
+  if (src === undefined || src === null) {
+    return [{ id: 'broken-image', snippet: '<img> with no src attribute' }];
+  }
+  const trimmed = String(src).trim();
+  // Empty or placeholder-only src values
+  if (trimmed === '' || trimmed === '#') {
+    return [{ id: 'broken-image', snippet: `<img src="${src}">` }];
+  }
+  return [];
+}
+
+const STATIC_ELEMENT_RULES = [
+  { id: 'border-rules', selector: '*', run: (el, tag, style, window, customPropMap) => checkElementBorders(tag, style, null, resolveBorderRadiusPx(el, style, parseFloat(style.width) || 0, window)) },
+  { id: 'color-rules', selector: '*', run: (el, tag, style, window, customPropMap) => checkElementColors(el, style, tag, window, customPropMap, false) },
+  { id: 'dark-glow', selector: '*', run: (el, tag, style, window, customPropMap) => checkElementGlow(tag, style, resolveBackground(el.parentElement || el, window, customPropMap)) },
+  { id: 'motion-rules', selector: '*', run: (el, tag, style) => checkElementMotion(tag, style) },
+  { id: 'icon-tile-stack', selector: 'h1,h2,h3,h4,h5,h6', run: (el, tag, _style, window) => checkElementIconTile(el, tag, window) },
+  { id: 'italic-serif-display', selector: 'h1,h2', run: (el, tag, style) => checkElementItalicSerif(el, style, tag) },
+  { id: 'hero-eyebrow-chip', selector: 'h1', run: (el, tag, style, window, customPropMap) => checkElementHeroEyebrow(el, style, tag, window, customPropMap) },
+  { id: 'broken-image', selector: 'img', run: (el) => checkElementBrokenImage(el) },
+  { id: 'quality-rules', selector: '*', run: (el, tag, style, window) => checkElementQuality(el, style, tag, window) },
+  { id: 'oversized-h1', selector: 'h1', run: (el, tag, style, window) => checkElementOversizedH1(el, style, tag, window) },
+  { id: 'clipped-overflow-container', selector: '*', run: (el, tag, style, window) => checkElementClippedOverflow(el, style, tag, window) },
+  { id: 'gpt-thin-border-wide-shadow', selector: '*', run: (el, tag, style) => checkElementGptBorderShadow(el, style) },
+];
+
+async function detectHtml(filePath, options = {}) {
+  const profile = options?.profile;
+  const html = profileStep(profile, {
+    engine: 'static-html',
+    phase: 'setup',
+    ruleId: 'read-html',
+    target: filePath,
+  }, () => fs.readFileSync(filePath, 'utf-8'));
+
+  let modules;
+  try {
+    modules = await profileStepAsync(profile, {
+      engine: 'static-html',
+      phase: 'setup',
+      ruleId: 'import-static-parser',
+      target: filePath,
+    }, async () => {
+      const [htmlparser2, cssSelect, csstree, domutils] = await Promise.all([
+        import('htmlparser2'),
+        import('css-select'),
+        import('css-tree'),
+        import('domutils'),
+      ]);
+      return {
+        parseDocument: htmlparser2.parseDocument,
+        selectAll: cssSelect.selectAll,
+        selectOne: cssSelect.selectOne,
+        is: cssSelect.is,
+        csstree,
+        domutils,
+      };
+    });
+  } catch {
+    return detectText(html, filePath, options);
+  }
+
+  const resolvedPath = path.resolve(filePath);
+  const fileDir = path.dirname(resolvedPath);
+  const root = profileStep(profile, {
+    engine: 'static-html',
+    phase: 'parse-html',
+    ruleId: 'parse-document',
+    target: filePath,
+  }, () => modules.parseDocument(html, { lowerCaseAttributeNames: false, lowerCaseTags: true }));
+
+  const cssText = collectStaticCssText(root, fileDir, profile, filePath, modules);
+  const document = new StaticDocument(root, modules);
+  buildStaticStyleMap(root, document, cssText, modules, profile, filePath);
+  const window = buildStaticWindow(document);
+
+  const customPropMap = null;
+
+  const findings = [];
+  const runElementCheck = (ruleId, callback) => profile
+    ? profileFindings(profile, { engine: 'static-html', phase: 'element', ruleId, target: filePath }, callback)
+    : callback();
+
+  const visitedByRule = new Map();
+  for (const rule of STATIC_ELEMENT_RULES) {
+    const elements = document.querySelectorAll(rule.selector);
+    visitedByRule.set(rule.id, elements.length);
+    for (const el of elements) {
+      const tag = el.tagName.toLowerCase();
+      const style = window.getComputedStyle(el);
+      for (const f of runElementCheck(rule.id, () => rule.run(el, tag, style, window, customPropMap))) {
+        findings.push(finding(f.id, filePath, f.snippet));
+      }
+    }
+  }
+
+  if (isFullPage(html)) {
+    const runPageCheck = (ruleId, callback) => profile
+      ? profileFindings(profile, { engine: 'static-html', phase: 'page', ruleId, target: filePath }, callback)
+      : callback();
+    for (const f of runPageCheck('typography-rules', () => checkStaticPageTypography(document, window))) {
+      findings.push(finding(f.id, filePath, f.snippet));
+    }
+    for (const f of runPageCheck('repeated-section-kickers', () => checkRepeatedSectionKickersFromDoc(document, window))) {
+      findings.push(finding(f.id, filePath, f.snippet));
+    }
+    for (const f of runPageCheck('layout-rules', () => checkPageLayout(document, window))) {
+      findings.push(finding(f.id, filePath, f.snippet));
+    }
+    for (const f of runPageCheck('cream-palette', () => checkCreamPalette(document, window))) {
+      findings.push(finding(f.id, filePath, f.snippet));
+    }
+    for (const f of runPageCheck('skipped-heading', () => checkPageQualityFromDoc(document))) {
+      findings.push(finding(f.id, filePath, f.snippet));
+    }
+    for (const f of runPageCheck('html-patterns', () => checkHtmlPatterns(html).filter(item =>
+      item.id !== 'bounce-easing' && item.id !== 'layout-transition'
+    ))) {
+      findings.push(finding(f.id, filePath, f.snippet));
+    }
+    // Text-content analyzers (em-dash overuse, marketing buzzwords,
+    // numbered section markers, aphoristic cadence) live in the regex
+    // engine. Call them from here so .html files get the same coverage
+    // as .css/.tsx files. These are scoped to text content only and
+    // don't overlap with static-html's element/page rules.
+    for (const f of runPageCheck('text-content', () => runTextContentAnalyzers(html, filePath, options))) {
+      findings.push(finding(f.antipattern, filePath, f.snippet));
+    }
+  }
+
+  return filterByProviders(findings, options.providers);
+}
+
+export { checkStaticPageTypography, STATIC_ELEMENT_RULES, detectHtml };

.agents/skills/impeccable/scripts/detector/engines/visual/screenshot-contrast.mjs

@@ -0,0 +1,189 @@
+function sanitizeScreenshotClip(clip, viewport) {
+  if (!clip) return null;
+  const x = Math.max(0, Math.floor(clip.x || 0));
+  const y = Math.max(0, Math.floor(clip.y || 0));
+  const width = Math.min(
+    Math.max(1, Math.ceil(clip.width || 0)),
+    Math.max(1, viewport?.width || 1600),
+  );
+  const height = Math.min(
+    Math.max(1, Math.ceil(clip.height || 0)),
+    320,
+  );
+  if (width < 1 || height < 1) return null;
+  return { x, y, width, height };
+}
+
+async function compareScreenshotContrast(page, beforeBase64, afterBase64, candidate) {
+  return page.evaluate(async ({ beforeBase64, afterBase64, candidate }) => {
+    const loadImage = (base64) => new Promise((resolve, reject) => {
+      const img = new Image();
+      img.onload = () => resolve(img);
+      img.onerror = () => reject(new Error('Could not decode contrast screenshot'));
+      img.src = `data:image/png;base64,${base64}`;
+    });
+    const [before, after] = await Promise.all([loadImage(beforeBase64), loadImage(afterBase64)]);
+    const width = Math.min(before.width, after.width);
+    const height = Math.min(before.height, after.height);
+    if (width < 1 || height < 1) return null;
+
+    const canvas = document.createElement('canvas');
+    canvas.width = width;
+    canvas.height = height;
+    const ctx = canvas.getContext('2d', { willReadFrequently: true });
+    if (!ctx) return null;
+
+    ctx.drawImage(before, 0, 0, width, height);
+    const beforePixels = ctx.getImageData(0, 0, width, height).data;
+    ctx.clearRect(0, 0, width, height);
+    ctx.drawImage(after, 0, 0, width, height);
+    const afterPixels = ctx.getImageData(0, 0, width, height).data;
+
+    const luminance = ({ r, g, b }) => {
+      const convert = c => {
+        const v = c / 255;
+        return v <= 0.03928 ? v / 12.92 : ((v + 0.055) / 1.055) ** 2.4;
+      };
+      return 0.2126 * convert(r) + 0.7152 * convert(g) + 0.0722 * convert(b);
+    };
+    const ratio = (a, b) => {
+      const l1 = luminance(a);
+      const l2 = luminance(b);
+      return (Math.max(l1, l2) + 0.05) / (Math.min(l1, l2) + 0.05);
+    };
+
+    const cssTextColor = candidate.textColor && !candidate.preferRenderedForeground
+      ? {
+          r: candidate.textColor.r,
+          g: candidate.textColor.g,
+          b: candidate.textColor.b,
+        }
+      : null;
+    const ratios = [];
+    let glyphPixels = 0;
+    let strongestDelta = 0;
+    for (let i = 0; i < beforePixels.length; i += 4) {
+      const delta = Math.abs(beforePixels[i] - afterPixels[i])
+        + Math.abs(beforePixels[i + 1] - afterPixels[i + 1])
+        + Math.abs(beforePixels[i + 2] - afterPixels[i + 2])
+        + Math.abs(beforePixels[i + 3] - afterPixels[i + 3]);
+      strongestDelta = Math.max(strongestDelta, delta);
+      if (delta < 10) continue;
+      glyphPixels++;
+      const fg = cssTextColor || {
+        r: beforePixels[i],
+        g: beforePixels[i + 1],
+        b: beforePixels[i + 2],
+      };
+      const bg = {
+        r: afterPixels[i],
+        g: afterPixels[i + 1],
+        b: afterPixels[i + 2],
+      };
+      ratios.push(ratio(fg, bg));
+    }
+
+    if (ratios.length < 8) {
+      return {
+        glyphPixels,
+        strongestDelta,
+        worstRatio: null,
+        p10Ratio: null,
+        medianRatio: null,
+      };
+    }
+
+    ratios.sort((a, b) => a - b);
+    const pick = pct => ratios[Math.min(ratios.length - 1, Math.max(0, Math.floor((pct / 100) * ratios.length)))];
+    return {
+      glyphPixels,
+      strongestDelta,
+      worstRatio: ratios[0],
+      p10Ratio: pick(10),
+      medianRatio: pick(50),
+    };
+  }, { beforeBase64, afterBase64, candidate });
+}
+
+async function captureVisualContrastCandidate(page, candidate, viewport) {
+  const clip = sanitizeScreenshotClip(candidate.clip, viewport);
+  if (!clip) return null;
+
+  const beforeBase64 = await page.screenshot({
+    encoding: 'base64',
+    clip,
+    captureBeyondViewport: true,
+  });
+  const token = `impeccable-contrast-${Date.now()}-${Math.random().toString(36).slice(2)}`;
+  const applied = await page.evaluate(({ selector, token, backgroundClipText }) => {
+    let el;
+    try {
+      el = document.querySelector(selector);
+    } catch {
+      return false;
+    }
+    if (!el) return false;
+    let style = document.getElementById('impeccable-visual-contrast-hide-style');
+    if (!style) {
+      style = document.createElement('style');
+      style.id = 'impeccable-visual-contrast-hide-style';
+      style.textContent = [
+        '[data-impeccable-visual-contrast-target] {',
+        '  color: transparent !important;',
+        '  -webkit-text-fill-color: transparent !important;',
+        '  text-shadow: none !important;',
+        '}',
+        '[data-impeccable-visual-contrast-target][data-impeccable-bgclip-text="true"] {',
+        '  background-image: none !important;',
+        '}',
+      ].join('\n');
+      document.head.appendChild(style);
+    }
+    el.setAttribute('data-impeccable-visual-contrast-target', token);
+    if (backgroundClipText) el.setAttribute('data-impeccable-bgclip-text', 'true');
+    return true;
+  }, {
+    selector: candidate.selector,
+    token,
+    backgroundClipText: candidate.backgroundClipText,
+  });
+  if (!applied) return null;
+
+  let afterBase64;
+  try {
+    afterBase64 = await page.screenshot({
+      encoding: 'base64',
+      clip,
+      captureBeyondViewport: true,
+    });
+  } finally {
+    await page.evaluate(({ selector }) => {
+      try {
+        const el = document.querySelector(selector);
+        if (el) {
+          el.removeAttribute('data-impeccable-visual-contrast-target');
+          el.removeAttribute('data-impeccable-bgclip-text');
+        }
+      } catch {
+        // Ignore invalid or stale selectors during cleanup.
+      }
+    }, { selector: candidate.selector }).catch(() => {});
+  }
+
+  const metrics = await compareScreenshotContrast(page, beforeBase64, afterBase64, candidate);
+  if (!metrics || !Number.isFinite(metrics.p10Ratio) || metrics.glyphPixels < 8) return null;
+  const measuredRatio = metrics.p10Ratio;
+  if (measuredRatio >= candidate.threshold) return null;
+  const textLabel = candidate.text ? ` "${candidate.text}"` : '';
+  const reasonLabel = (candidate.reasons || []).slice(0, 3).join(', ') || 'visual background';
+  return {
+    id: 'low-contrast',
+    snippet: `pixel contrast ${measuredRatio.toFixed(1)}:1 median ${metrics.medianRatio.toFixed(1)}:1 (need ${candidate.threshold}:1) on ${reasonLabel}${textLabel}`,
+  };
+}
+
+export {
+  sanitizeScreenshotClip,
+  compareScreenshotContrast,
+  captureVisualContrastCandidate,
+};

.agents/skills/impeccable/scripts/detector/findings.mjs

@@ -0,0 +1,12 @@
+import { getAntipattern } from './registry/antipatterns.mjs';
+
+function getAP(id) {
+  return getAntipattern(id);
+}
+
+function finding(id, filePath, snippet, line = 0) {
+  const ap = getAP(id);
+  return { antipattern: id, name: ap.name, description: ap.description, severity: ap.severity || 'warning', file: filePath, line, snippet };
+}
+
+export { getAP, finding };

.agents/skills/impeccable/scripts/detector/node/file-system.mjs

@@ -0,0 +1,198 @@
+import fs from 'node:fs';
+import path from 'node:path';
+
+// ---------------------------------------------------------------------------
+// File walker
+// ---------------------------------------------------------------------------
+
+const SKIP_DIRS = new Set([
+  'node_modules', '.git', 'dist', 'build', '.next', '.nuxt', '.output',
+  '.svelte-kit', '__pycache__', '.turbo', '.vercel',
+]);
+
+const SCANNABLE_EXTENSIONS = new Set([
+  '.html', '.htm', '.css', '.scss', '.less',
+  '.jsx', '.tsx', '.js', '.ts',
+  '.vue', '.svelte', '.astro',
+]);
+
+const HTML_EXTENSIONS = new Set(['.html', '.htm']);
+
+function walkDir(dir) {
+  const files = [];
+  let entries;
+  try { entries = fs.readdirSync(dir, { withFileTypes: true }); } catch { return files; }
+  for (const entry of entries) {
+    if (SKIP_DIRS.has(entry.name)) continue;
+    const full = path.join(dir, entry.name);
+    if (entry.isDirectory()) files.push(...walkDir(full));
+    else if (SCANNABLE_EXTENSIONS.has(path.extname(entry.name).toLowerCase())) files.push(full);
+  }
+  return files;
+}
+
+
+// ---------------------------------------------------------------------------
+// Import graph (multi-file awareness)
+// ---------------------------------------------------------------------------
+
+function resolveImport(specifier, fromDir, fileSet) {
+  if (!/^[./]/.test(specifier)) return null; // skip bare specifiers
+  const base = path.resolve(fromDir, specifier);
+  if (fileSet.has(base)) return base;
+  for (const ext of SCANNABLE_EXTENSIONS) {
+    const withExt = base + ext;
+    if (fileSet.has(withExt)) return withExt;
+  }
+  // index file convention
+  for (const ext of SCANNABLE_EXTENSIONS) {
+    const indexFile = path.join(base, 'index' + ext);
+    if (fileSet.has(indexFile)) return indexFile;
+  }
+  return null;
+}
+
+function buildImportGraph(files) {
+  const fileSet = new Set(files);
+  const graph = new Map();
+
+  for (const file of files) {
+    const content = fs.readFileSync(file, 'utf-8');
+    const dir = path.dirname(file);
+    const imports = new Set();
+
+    // ES imports: import ... from '...' and import '...'
+    const esRe = /import\s+(?:[\s\S]*?from\s+)?['"]([^'"]+)['"]/g;
+    let m;
+    while ((m = esRe.exec(content)) !== null) {
+      const resolved = resolveImport(m[1], dir, fileSet);
+      if (resolved) imports.add(resolved);
+    }
+
+    // CSS @import
+    const cssRe = /@import\s+(?:url\(\s*)?['"]?([^'");\s]+)['"]?\s*\)?/g;
+    while ((m = cssRe.exec(content)) !== null) {
+      const resolved = resolveImport(m[1], dir, fileSet);
+      if (resolved) imports.add(resolved);
+    }
+
+    // SCSS @use / @forward
+    const scssRe = /@(?:use|forward)\s+['"]([^'"]+)['"]/g;
+    while ((m = scssRe.exec(content)) !== null) {
+      const resolved = resolveImport(m[1], dir, fileSet);
+      if (resolved) imports.add(resolved);
+    }
+
+    graph.set(file, imports);
+  }
+  return graph;
+}
+
+// ---------------------------------------------------------------------------
+// Framework dev server detection
+// ---------------------------------------------------------------------------
+
+const FRAMEWORK_CONFIGS = [
+  { name: 'Next.js', files: ['next.config.js', 'next.config.mjs', 'next.config.ts'], defaultPort: 3000,
+    portRe: /port\s*[:=]\s*(\d+)/,
+    fingerprint: { header: 'x-powered-by', value: /next/i } },
+  { name: 'SvelteKit', files: ['svelte.config.js', 'svelte.config.ts'], defaultPort: 5173,
+    portRe: /port\s*[:=]\s*(\d+)/,
+    fingerprint: { header: 'x-sveltekit-page', value: null } },
+  { name: 'Nuxt', files: ['nuxt.config.js', 'nuxt.config.ts'], defaultPort: 3000,
+    portRe: /port\s*[:=]\s*(\d+)/,
+    fingerprint: { header: 'x-powered-by', value: /nuxt/i } },
+  { name: 'Vite', files: ['vite.config.js', 'vite.config.ts', 'vite.config.mjs'], defaultPort: 5173,
+    portRe: /port\s*[:=]\s*(\d+)/,
+    fingerprint: { body: /@vite\/client/ } },
+  { name: 'Astro', files: ['astro.config.js', 'astro.config.ts', 'astro.config.mjs'], defaultPort: 4321,
+    portRe: /port\s*[:=]\s*(\d+)/,
+    fingerprint: { body: /astro/i } },
+  { name: 'Angular', files: ['angular.json'], defaultPort: 4200,
+    portRe: /"port"\s*:\s*(\d+)/,
+    fingerprint: { body: /ng-version/i } },
+  { name: 'Remix', files: ['remix.config.js', 'remix.config.ts'], defaultPort: 3000,
+    portRe: /port\s*[:=]\s*(\d+)/,
+    fingerprint: { header: 'x-powered-by', value: /remix/i } },
+];
+
+function detectFrameworkConfig(dir) {
+  let entries;
+  try { entries = fs.readdirSync(dir); } catch { return null; }
+  const entrySet = new Set(entries);
+
+  for (const cfg of FRAMEWORK_CONFIGS) {
+    const match = cfg.files.find(f => entrySet.has(f));
+    if (!match) continue;
+
+    const configPath = path.join(dir, match);
+    let port = cfg.defaultPort;
+    try {
+      const content = fs.readFileSync(configPath, 'utf-8');
+      const portMatch = content.match(cfg.portRe);
+      if (portMatch) port = parseInt(portMatch[1], 10);
+    } catch { /* use default */ }
+
+    return { name: cfg.name, port, configPath, fingerprint: cfg.fingerprint };
+  }
+  return null;
+}
+
+/**
+ * Check if a port is listening and optionally verify it matches the expected framework.
+ * Returns { listening: true, matched: true/false } or { listening: false }.
+ */
+async function isPortListening(port, fingerprint = null) {
+  if (!fingerprint) {
+    // Simple TCP probe fallback
+    const net = await import('node:net');
+    return new Promise((resolve) => {
+      const sock = net.default.createConnection({ port, host: '127.0.0.1' });
+      sock.setTimeout(500);
+      sock.on('connect', () => { sock.destroy(); resolve({ listening: true, matched: true }); });
+      sock.on('error', () => resolve({ listening: false }));
+      sock.on('timeout', () => { sock.destroy(); resolve({ listening: false }); });
+    });
+  }
+
+  // HTTP probe with fingerprint matching
+  try {
+    const controller = new AbortController();
+    const timeout = setTimeout(() => controller.abort(), 2000);
+    const res = await fetch(`http://localhost:${port}/`, { signal: controller.signal, redirect: 'follow' });
+    clearTimeout(timeout);
+
+    // Check header fingerprint
+    if (fingerprint.header) {
+      const val = res.headers.get(fingerprint.header);
+      if (val && (!fingerprint.value || fingerprint.value.test(val))) {
+        return { listening: true, matched: true };
+      }
+    }
+
+    // Check body fingerprint
+    if (fingerprint.body) {
+      const body = await res.text();
+      if (fingerprint.body.test(body)) {
+        return { listening: true, matched: true };
+      }
+    }
+
+    // Port is listening but doesn't match the expected framework
+    return { listening: true, matched: false };
+  } catch {
+    return { listening: false };
+  }
+}
+
+export {
+  SKIP_DIRS,
+  SCANNABLE_EXTENSIONS,
+  HTML_EXTENSIONS,
+  walkDir,
+  resolveImport,
+  buildImportGraph,
+  FRAMEWORK_CONFIGS,
+  detectFrameworkConfig,
+  isPortListening,
+};

.agents/skills/impeccable/scripts/detector/profile/profiler.mjs

@@ -0,0 +1,166 @@
+function profileNow() {
+  return typeof performance !== 'undefined' && performance.now
+    ? performance.now()
+    : Date.now();
+}
+
+function createDetectorProfile() {
+  return { events: [] };
+}
+
+function recordProfileEvent(profile, event) {
+  if (!profile) return;
+  const normalized = {
+    engine: event.engine || 'unknown',
+    phase: event.phase || 'unknown',
+    ruleId: event.ruleId || 'unknown',
+    target: event.target || '',
+    ms: Number.isFinite(event.ms) ? event.ms : 0,
+    findings: Number.isFinite(event.findings) ? event.findings : 0,
+  };
+  if (event.detail) normalized.detail = event.detail;
+  if (Array.isArray(event.findingIds) && event.findingIds.length) {
+    normalized.findingIds = event.findingIds;
+  }
+  if (typeof profile === 'function') {
+    profile(normalized);
+  } else if (typeof profile.record === 'function') {
+    profile.record(normalized);
+  } else if (Array.isArray(profile.events)) {
+    profile.events.push(normalized);
+  } else if (Array.isArray(profile)) {
+    profile.push(normalized);
+  }
+}
+
+function extractFindingIds(findings) {
+  if (!Array.isArray(findings) || findings.length === 0) return [];
+  return [...new Set(findings.map(f => f?.id || f?.type || f?.antipattern).filter(Boolean))];
+}
+
+function profileFindings(profile, meta, callback) {
+  if (!profile) return callback();
+  const started = profileNow();
+  const findings = callback();
+  recordProfileEvent(profile, {
+    ...meta,
+    ms: profileNow() - started,
+    findings: Array.isArray(findings) ? findings.length : 0,
+    findingIds: extractFindingIds(findings),
+  });
+  return findings;
+}
+
+function profileStep(profile, meta, callback) {
+  if (!profile) return callback();
+  const started = profileNow();
+  try {
+    return callback();
+  } finally {
+    recordProfileEvent(profile, {
+      ...meta,
+      ms: profileNow() - started,
+      findings: 0,
+    });
+  }
+}
+
+async function profileFindingsAsync(profile, meta, callback) {
+  if (!profile) return callback();
+  const started = profileNow();
+  const findings = await callback();
+  recordProfileEvent(profile, {
+    ...meta,
+    ms: profileNow() - started,
+    findings: Array.isArray(findings) ? findings.length : 0,
+    findingIds: extractFindingIds(findings),
+  });
+  return findings;
+}
+
+async function profileStepAsync(profile, meta, callback) {
+  if (!profile) return callback();
+  const started = profileNow();
+  try {
+    return await callback();
+  } finally {
+    recordProfileEvent(profile, {
+      ...meta,
+      ms: profileNow() - started,
+      findings: 0,
+    });
+  }
+}
+
+function percentile(sortedValues, pct) {
+  if (!sortedValues.length) return 0;
+  const idx = Math.min(
+    sortedValues.length - 1,
+    Math.max(0, Math.ceil((pct / 100) * sortedValues.length) - 1),
+  );
+  return sortedValues[idx];
+}
+
+function summarizeDetectorProfile(profile) {
+  const events = Array.isArray(profile)
+    ? profile
+    : (Array.isArray(profile?.events) ? profile.events : []);
+  const groups = new Map();
+  for (const event of events) {
+    const key = [
+      event.engine || 'unknown',
+      event.phase || 'unknown',
+      event.ruleId || 'unknown',
+      event.target || '',
+    ].join('\u0000');
+    let group = groups.get(key);
+    if (!group) {
+      group = {
+        engine: event.engine || 'unknown',
+        phase: event.phase || 'unknown',
+        ruleId: event.ruleId || 'unknown',
+        target: event.target || '',
+        calls: 0,
+        totalMs: 0,
+        findings: 0,
+        samples: [],
+      };
+      groups.set(key, group);
+    }
+    const ms = Number.isFinite(event.ms) ? event.ms : 0;
+    group.calls += 1;
+    group.totalMs += ms;
+    group.findings += Number.isFinite(event.findings) ? event.findings : 0;
+    group.samples.push(ms);
+  }
+  return [...groups.values()]
+    .map(group => {
+      const samples = group.samples.sort((a, b) => a - b);
+      return {
+        engine: group.engine,
+        phase: group.phase,
+        ruleId: group.ruleId,
+        target: group.target,
+        calls: group.calls,
+        totalMs: Number(group.totalMs.toFixed(3)),
+        avgMs: Number((group.totalMs / group.calls).toFixed(3)),
+        p50: Number(percentile(samples, 50).toFixed(3)),
+        p95: Number(percentile(samples, 95).toFixed(3)),
+        findings: group.findings,
+      };
+    })
+    .sort((a, b) => b.totalMs - a.totalMs);
+}
+
+export {
+  profileNow,
+  createDetectorProfile,
+  recordProfileEvent,
+  extractFindingIds,
+  profileFindings,
+  profileStep,
+  profileFindingsAsync,
+  profileStepAsync,
+  percentile,
+  summarizeDetectorProfile,
+};

.agents/skills/impeccable/scripts/detector/registry/antipatterns.mjs

@@ -0,0 +1,419 @@
+const ANTIPATTERNS = [
+  // ── AI slop: tells that something was AI-generated ──
+  {
+    id: 'side-tab',
+    category: 'slop',
+    name: 'Side-tab accent border',
+    description:
+      'Thick colored border on one side of a card — the most recognizable tell of AI-generated UIs. Use a subtler accent or remove it entirely.',
+    skillSection: 'Visual Details',
+    skillGuideline: 'colored accent stripe',
+  },
+  {
+    id: 'border-accent-on-rounded',
+    category: 'slop',
+    name: 'Border accent on rounded element',
+    description:
+      'Thick accent border on a rounded card — the border clashes with the rounded corners. Remove the border or the border-radius.',
+    skillSection: 'Visual Details',
+    skillGuideline: 'colored accent stripe',
+  },
+  {
+    id: 'overused-font',
+    category: 'slop',
+    name: 'Overused font',
+    description:
+      'Inter, Roboto, Fraunces, Geist, Plus Jakarta Sans, and Space Grotesk are used on so many sites they no longer feel distinctive. Each new wave of AI-generated UIs converges on the same handful of faces. Choose a face that gives your interface personality.',
+    skillSection: 'Typography',
+    skillGuideline: 'overused fonts like Inter',
+  },
+  {
+    id: 'single-font',
+    category: 'slop',
+    name: 'Single font for everything',
+    description:
+      'Only one font family is used for the entire page. Pair a distinctive display font with a refined body font to create typographic hierarchy.',
+    skillSection: 'Typography',
+    skillGuideline: 'only one font family for the entire page',
+  },
+  {
+    id: 'flat-type-hierarchy',
+    category: 'slop',
+    name: 'Flat type hierarchy',
+    description:
+      'Font sizes are too close together — no clear visual hierarchy. Use fewer sizes with more contrast (aim for at least a 1.25 ratio between steps).',
+    skillSection: 'Typography',
+    skillGuideline: 'flat type hierarchy',
+  },
+  {
+    id: 'gradient-text',
+    category: 'slop',
+    name: 'Gradient text',
+    description:
+      'Gradient text is decorative rather than meaningful — a common AI tell, especially on headings and metrics. Use solid colors for text.',
+    skillSection: 'Color & Contrast',
+    skillGuideline: 'gradient text for',
+  },
+  {
+    id: 'ai-color-palette',
+    category: 'slop',
+    name: 'AI color palette',
+    description:
+      'Purple/violet gradients and cyan-on-dark are the most recognizable tells of AI-generated UIs. Choose a distinctive, intentional palette.',
+    skillSection: 'Color & Contrast',
+    skillGuideline: 'AI color palette',
+  },
+  {
+    id: 'cream-palette',
+    category: 'slop',
+    name: 'Cream / beige palette',
+    description:
+      'A warm cream or beige page background has become the default "tasteful" AI surface, reached for by reflex. Choose a background that comes from a deliberate palette, not the safe warm off-white.',
+    skillSection: 'Color & Contrast',
+    skillGuideline: 'cream and beige as the default surface',
+  },
+  {
+    id: 'nested-cards',
+    category: 'slop',
+    name: 'Nested cards',
+    description:
+      'Cards inside cards create visual noise and excessive depth. Flatten the hierarchy — use spacing, typography, and dividers instead of nesting containers.',
+    skillSection: 'Layout & Space',
+    skillGuideline: 'Nest cards inside cards',
+  },
+  {
+    id: 'monotonous-spacing',
+    category: 'slop',
+    name: 'Monotonous spacing',
+    description:
+      'The same spacing value used everywhere — no rhythm, no variation. Use tight groupings for related items and generous separations between sections.',
+    skillSection: 'Layout & Space',
+    skillGuideline: 'same spacing everywhere',
+  },
+  {
+    id: 'bounce-easing',
+    category: 'slop',
+    name: 'Bounce or elastic easing',
+    description:
+      'Bounce and elastic easing feel dated and tacky. Real objects decelerate smoothly — use exponential easing (ease-out-quart/quint/expo) instead.',
+    skillSection: 'Motion',
+    skillGuideline: 'bounce or elastic easing',
+  },
+  {
+    id: 'dark-glow',
+    category: 'slop',
+    name: 'Dark mode with glowing accents',
+    description:
+      'Dark backgrounds with colored box-shadow glows are the default "cool" look of AI-generated UIs. Use subtle, purposeful lighting instead — or skip the dark theme entirely.',
+    skillSection: 'Color & Contrast',
+    skillGuideline: 'dark mode with glowing accents',
+  },
+  {
+    id: 'icon-tile-stack',
+    category: 'slop',
+    name: 'Icon tile stacked above heading',
+    description:
+      'A small rounded-square icon container above a heading is the universal AI feature-card template — every generator outputs this exact shape. Try a side-by-side icon and heading, or let the icon sit in flow without its own container.',
+    skillSection: 'Typography',
+    skillGuideline: 'large icons with rounded corners above every heading',
+  },
+  {
+    id: 'italic-serif-display',
+    category: 'slop',
+    name: 'Italic serif display headline',
+    description:
+      'Oversized italic serif (Fraunces, Recoleta, Playfair, Newsreader-italic) as the primary hero headline reads as taste in isolation but has become the universal AI-startup landing page hero. Set roman, or move to a non-serif display face. Editorial / magazine register may legitimately want this — judge by context.',
+    skillSection: 'Typography',
+    skillGuideline: 'oversized italic serif as the hero headline',
+  },
+  {
+    id: 'hero-eyebrow-chip',
+    category: 'slop',
+    name: 'Hero eyebrow / pill chip',
+    description:
+      'A tiny uppercase letter-spaced label sitting immediately above an oversized hero headline — or the same shape rendered as a pill chip — is now the default AI SaaS hero. Drop the eyebrow, integrate the kicker into the headline, or run it as a navigation breadcrumb instead.',
+    skillSection: 'Typography',
+    skillGuideline: 'tiny uppercase tracked label above the hero headline',
+  },
+  {
+    id: 'repeated-section-kickers',
+    category: 'slop',
+    severity: 'advisory',
+    name: 'Repeated section kicker labels',
+    description:
+      'Repeating tiny uppercase tracked labels above section headings turns a brand page into AI editorial scaffolding. Replace them with stronger structure, artifacts, imagery, or a deliberate brand system.',
+    skillSection: 'Typography',
+    skillGuideline: 'repeated eyebrow or kicker labels as section scaffolding',
+  },
+  {
+    id: 'numbered-section-markers',
+    category: 'slop',
+    severity: 'advisory',
+    name: 'Numbered section markers (01 / 02 / 03)',
+    description:
+      'Numbered display markers as section labels (01, 02, 03) are the AI editorial scaffold one tier deeper than tracked eyebrow chips. If you find yourself reaching for them, choose a different section cadence.',
+    skillSection: 'Layout & Space',
+    skillGuideline: 'numbered section markers',
+  },
+  {
+    id: 'em-dash-overuse',
+    category: 'slop',
+    name: 'Em-dash overuse',
+    description:
+      'More than two em-dashes (— or --) in body copy is an AI cadence tell. Use commas, colons, periods, or parentheses instead.',
+    skillSection: 'Copy',
+    skillGuideline: 'no em dashes',
+  },
+  {
+    id: 'marketing-buzzword',
+    category: 'slop',
+    name: 'Marketing buzzword',
+    description:
+      'Generic SaaS phrases (streamline / empower / supercharge / world-class / enterprise-grade / next-generation / cutting-edge / etc) are instant AI tells. Pick a specific verb and noun that says what the product literally does.',
+    skillSection: 'Copy',
+    skillGuideline: 'marketing buzzwords',
+  },
+  {
+    id: 'aphoristic-cadence',
+    category: 'slop',
+    name: 'Aphoristic-cadence copy',
+    description:
+      'Three or more sections landing on a short rebuttal sentence ("X. No Y." / "X. Just Y.") or a manufactured-contrast aphorism ("Not a feature. A platform.") reads as AI cadence, not voice. Once is fine; the pattern is the tell.',
+    skillSection: 'Copy',
+    skillGuideline: 'aphoristic cadence',
+  },
+  {
+    id: 'oversized-h1',
+    category: 'slop',
+    name: 'Oversized hero headline',
+    description:
+      'A full-sentence headline set at display size ends up dominating the viewport, leaving no room for anything else above the fold. A punchy one- or two-word headline at that size is fine — the problem is a long headline blown up too large. Set long headlines smaller, or tighten the copy.',
+    skillSection: 'Typography',
+    skillGuideline: 'long headline set at display size',
+  },
+  {
+    id: 'extreme-negative-tracking',
+    category: 'slop',
+    name: 'Crushed letter spacing',
+    description:
+      'Letter-spacing pulled tighter than the point where characters keep their own shapes costs legibility. Tighten display type optically, not destructively.',
+    skillSection: 'Typography',
+    skillGuideline: 'letter spacing crushed past legibility',
+  },
+  {
+    id: 'broken-image',
+    category: 'quality',
+    name: 'Broken or placeholder image',
+    description:
+      '<img> tags with empty src, missing src, or placeholder values ship as broken-image boxes. Use real images, generated assets, or remove the tag.',
+    skillSection: 'Imagery',
+    skillGuideline: 'broken image references',
+  },
+
+  // ── Quality: general design and accessibility issues ──
+  {
+    id: 'gray-on-color',
+    category: 'quality',
+    name: 'Gray text on colored background',
+    description:
+      'Gray text looks washed out on colored backgrounds. Use a darker shade of the background color instead, or white/near-white for contrast.',
+    skillSection: 'Color & Contrast',
+    skillGuideline: 'gray text on colored backgrounds',
+  },
+  {
+    id: 'low-contrast',
+    category: 'quality',
+    name: 'Low contrast text',
+    description:
+      'Text does not meet WCAG AA contrast requirements (4.5:1 for body, 3:1 for large text). Increase the contrast between text and background.',
+  },
+  {
+    id: 'layout-transition',
+    category: 'quality',
+    name: 'Layout property animation',
+    description:
+      'Animating width, height, padding, or margin causes layout thrash and janky performance. Use transform and opacity instead, or grid-template-rows for height animations.',
+    skillSection: 'Motion',
+    skillGuideline: 'Animate layout properties',
+  },
+  {
+    id: 'line-length',
+    category: 'quality',
+    name: 'Line length too long',
+    description:
+      'Text lines wider than ~80 characters are hard to read. The eye loses its place tracking back to the start of the next line. Add a max-width (65ch to 75ch) to text containers.',
+    skillSection: 'Layout & Space',
+    skillGuideline: 'wrap beyond ~80 characters',
+  },
+  {
+    id: 'cramped-padding',
+    category: 'quality',
+    name: 'Cramped padding',
+    description:
+      'Text is too close to the edge of its container. Two shapes: (1) an element with its own text where the padding is too low for the font size, and (2) a wrapper with text-bearing children and near-zero padding against a visible boundary (border, outline, or non-transparent background) — children land flush against the boundary line. Add at least 8px (ideally 12–16px) of padding inside bordered, outlined, or colored containers.',
+    skillSection: 'Layout & Space',
+    skillGuideline: 'inside bordered or colored containers',
+  },
+  {
+    id: 'body-text-viewport-edge',
+    category: 'quality',
+    name: 'Body text touching viewport edge',
+    description:
+      'Body paragraphs render flush against the left or right viewport edge with no container providing horizontal padding. Wrap content in a container with at least 16px (ideally 24-32px) of horizontal padding, or apply max-width with mx-auto.',
+  },
+  {
+    id: 'tight-leading',
+    category: 'quality',
+    name: 'Tight line height',
+    description:
+      'Line height below 1.3x the font size makes multi-line text hard to read. Use 1.5 to 1.7 for body text so lines have room to breathe.',
+  },
+  {
+    id: 'skipped-heading',
+    category: 'quality',
+    name: 'Skipped heading level',
+    description:
+      'Heading levels should not skip (e.g. h1 then h3 with no h2). Screen readers use heading hierarchy for navigation. Skipping levels breaks the document outline.',
+  },
+  {
+    id: 'justified-text',
+    category: 'quality',
+    name: 'Justified text',
+    description:
+      'Justified text without hyphenation creates uneven word spacing ("rivers of white"). Use text-align: left for body text, or enable hyphens: auto if you must justify.',
+  },
+  {
+    id: 'tiny-text',
+    category: 'quality',
+    name: 'Tiny body text',
+    description:
+      'Body text below 12px is hard to read, especially on high-DPI screens. Use at least 14px for body content, 16px is ideal.',
+  },
+  {
+    id: 'all-caps-body',
+    category: 'quality',
+    name: 'All-caps body text',
+    description:
+      'Long passages in uppercase are hard to read. We recognize words by shape (ascenders and descenders), which all-caps removes. Reserve uppercase for short labels and headings.',
+    skillSection: 'Typography',
+    skillGuideline: 'long body passages in uppercase',
+  },
+  {
+    id: 'wide-tracking',
+    category: 'quality',
+    name: 'Wide letter spacing on body text',
+    description:
+      'Letter spacing above 0.05em on body text disrupts natural character groupings and slows reading. Reserve wide tracking for short uppercase labels only.',
+  },
+  {
+    id: 'text-overflow',
+    category: 'quality',
+    name: 'Content overflowing its container',
+    description:
+      'Content renders wider than its container, spilling out or forcing a horizontal scrollbar. Let text wrap, constrain widths, or give the region a deliberate scroll affordance.',
+    skillSection: 'Layout & Space',
+    skillGuideline: 'content wider than its container',
+  },
+  {
+    id: 'clipped-overflow-container',
+    category: 'quality',
+    name: 'Positioned child clipped by overflow container',
+    description:
+      'A clipping container (overflow hidden or clip) wrapping an absolutely-positioned child cuts off tooltips, menus, and popovers that need to escape. Let the overflow be visible, or move the positioned layer out of the clip.',
+    skillSection: 'Layout & Space',
+    skillGuideline: 'overflow container clipping positioned children',
+  },
+
+  // ── Provider tells: opt-in via --gpt / --gemini (gated off by default) ──
+  {
+    id: 'gpt-thin-border-wide-shadow',
+    category: 'slop',
+    severity: 'advisory',
+    gated: 'gpt',
+    name: 'Hairline border with wide shadow',
+    description:
+      'A hairline border paired with a wide, diffuse shadow is a recurring generated-UI signature. Commit to one — a defined edge or a soft elevation — rather than both at once.',
+    skillSection: 'Visual Details',
+    skillGuideline: 'hairline border plus wide diffuse shadow',
+  },
+  {
+    id: 'repeating-stripes-gradient',
+    category: 'slop',
+    severity: 'advisory',
+    gated: 'gpt',
+    name: 'Repeating-gradient stripes',
+    description:
+      'Repeating-gradient stripes used as surface decoration are a recurring generated-UI signature. Reach for a deliberate texture or leave the surface plain.',
+    skillSection: 'Visual Details',
+    skillGuideline: 'repeating-gradient decorative stripes',
+  },
+  {
+    id: 'theater-slop-phrase',
+    category: 'slop',
+    severity: 'advisory',
+    gated: 'gpt',
+    name: 'Theater framing copy',
+    description:
+      'Dismissing something as "theater" is a recurring generated-copy tic. Say plainly what the thing does or does not do.',
+    skillSection: 'Copy',
+    skillGuideline: 'theater framing copy',
+  },
+  {
+    id: 'image-hover-transform',
+    category: 'slop',
+    severity: 'advisory',
+    gated: 'gemini',
+    name: 'Image hover transform',
+    description:
+      'Scaling or rotating an image on hover is a recurring generated-UI signature. Let imagery sit still, or use a subtler, purposeful interaction.',
+    skillSection: 'Motion',
+    skillGuideline: 'image scale or rotate on hover',
+  },
+];
+
+const RULE_ENGINE_SUPPORT = {
+  regex: new Set(['source', 'page-analyzer']),
+  'static-html': new Set(['element', 'page']),
+  browser: new Set(['element', 'page', 'layout']),
+  visual: new Set(['visual-contrast']),
+};
+
+function getAntipattern(id) {
+  return ANTIPATTERNS.find(rule => rule.id === id);
+}
+
+function getRulesForCategory(category) {
+  return ANTIPATTERNS.filter(rule => rule.category === category);
+}
+
+function getRuleEngineSupport(engine) {
+  return RULE_ENGINE_SUPPORT[engine] || new Set();
+}
+
+// Set of provider tags that gate rules off by default (e.g. 'gpt', 'gemini').
+const GATED_PROVIDERS = new Set(
+  ANTIPATTERNS.map(rule => rule.gated).filter(Boolean),
+);
+
+// Drop findings for rules gated behind a provider tag unless that provider
+// was explicitly enabled (CLI --gpt / --gemini). Non-gated findings always
+// pass through. `findings` carry the rule id on `.antipattern`.
+function filterByProviders(findings, providers = []) {
+  const enabled = new Set(providers || []);
+  if (!GATED_PROVIDERS.size) return findings;
+  return findings.filter(f => {
+    const rule = getAntipattern(f.antipattern);
+    if (!rule || !rule.gated) return true;
+    return enabled.has(rule.gated);
+  });
+}
+
+export {
+  ANTIPATTERNS,
+  RULE_ENGINE_SUPPORT,
+  GATED_PROVIDERS,
+  getAntipattern,
+  getRulesForCategory,
+  getRuleEngineSupport,
+  filterByProviders,
+};

.agents/skills/impeccable/scripts/detector/shared/color.mjs

@@ -0,0 +1,124 @@
+// ─── Section 2: Color Utilities ─────────────────────────────────────────────
+
+function isNeutralColor(color) {
+  if (!color || color === 'transparent') return true;
+
+  // rgb/rgba — use channel spread. Threshold 30 ≈ 11.7% of the 0–255 range.
+  const rgb = color.match(/rgba?\((\d+),\s*(\d+),\s*(\d+)/);
+  if (rgb) {
+    return (Math.max(+rgb[1], +rgb[2], +rgb[3]) - Math.min(+rgb[1], +rgb[2], +rgb[3])) < 30;
+  }
+
+  // oklch()/lch() — chroma is the second numeric component.
+  // oklch chroma is ~0–0.4 in sRGB gamut; >= 0.02 reads as tinted, not gray.
+  // lch chroma is ~0–150; >= 3 reads as tinted. jsdom emits both formats
+  // literally (it does NOT convert them to rgb).
+  const oklch = color.match(/oklch\(\s*[\d.]+%?\s*([\d.-]+)/i);
+  if (oklch) return parseFloat(oklch[1]) < 0.02;
+  const lch = color.match(/lch\(\s*[\d.]+%?\s*([\d.-]+)/i);
+  if (lch) return parseFloat(lch[1]) < 3;
+
+  // oklab()/lab() — a and b are signed axes; chroma = sqrt(a² + b²).
+  // oklab a/b are ~-0.4..0.4, threshold 0.02. lab a/b are ~-128..127, threshold 3.
+  const oklab = color.match(/oklab\(\s*[\d.]+%?\s*([\d.-]+)\s+([\d.-]+)/i);
+  if (oklab) {
+    const a = parseFloat(oklab[1]), b = parseFloat(oklab[2]);
+    return Math.hypot(a, b) < 0.02;
+  }
+  const lab = color.match(/lab\(\s*[\d.]+%?\s*([\d.-]+)\s+([\d.-]+)/i);
+  if (lab) {
+    const a = parseFloat(lab[1]), b = parseFloat(lab[2]);
+    return Math.hypot(a, b) < 3;
+  }
+
+  // hsl/hsla — saturation is the second numeric component (percent).
+  // Modern jsdom usually converts hsl() to rgb, but handle it directly for
+  // safety across versions and for any engine that preserves the format.
+  const hsl = color.match(/hsla?\(\s*[\d.-]+\s*,?\s*([\d.]+)%/i);
+  if (hsl) return parseFloat(hsl[1]) < 10;
+
+  // hwb(hue whiteness% blackness%) — a pixel is fully gray when
+  // whiteness + blackness >= 100; chroma-like saturation = 1 - (w+b)/100.
+  const hwb = color.match(/hwb\(\s*[\d.-]+\s+([\d.]+)%\s+([\d.]+)%/i);
+  if (hwb) {
+    const w = parseFloat(hwb[1]), b = parseFloat(hwb[2]);
+    return (1 - Math.min(100, w + b) / 100) < 0.1;
+  }
+
+  // Unknown / unrecognized format — err on the side of DETECTING rather
+  // than silently skipping. This is the opposite of the previous default,
+  // which was the root cause of the oklch bug.
+  return false;
+}
+
+function parseRgb(color) {
+  if (!color || color === 'transparent') return null;
+  const m = color.match(/rgba?\((\d+),\s*(\d+),\s*(\d+)(?:,\s*([\d.]+))?\)/);
+  if (!m) return null;
+  return { r: +m[1], g: +m[2], b: +m[3], a: m[4] !== undefined ? +m[4] : 1 };
+}
+
+function relativeLuminance({ r, g, b }) {
+  const [rs, gs, bs] = [r / 255, g / 255, b / 255].map(c =>
+    c <= 0.03928 ? c / 12.92 : ((c + 0.055) / 1.055) ** 2.4
+  );
+  return 0.2126 * rs + 0.7152 * gs + 0.0722 * bs;
+}
+
+function contrastRatio(c1, c2) {
+  const l1 = relativeLuminance(c1);
+  const l2 = relativeLuminance(c2);
+  return (Math.max(l1, l2) + 0.05) / (Math.min(l1, l2) + 0.05);
+}
+
+function parseGradientColors(bgImage) {
+  if (!bgImage || !bgImage.includes('gradient')) return [];
+  const colors = [];
+  for (const m of bgImage.matchAll(/rgba?\([^)]+\)/g)) {
+    const c = parseRgb(m[0]);
+    if (c) colors.push(c);
+  }
+  for (const m of bgImage.matchAll(/#([0-9a-f]{6}|[0-9a-f]{3})\b/gi)) {
+    const h = m[1];
+    if (h.length === 6) {
+      colors.push({ r: parseInt(h.slice(0,2),16), g: parseInt(h.slice(2,4),16), b: parseInt(h.slice(4,6),16), a: 1 });
+    } else {
+      colors.push({ r: parseInt(h[0]+h[0],16), g: parseInt(h[1]+h[1],16), b: parseInt(h[2]+h[2],16), a: 1 });
+    }
+  }
+  return colors;
+}
+
+function hasChroma(c, threshold = 30) {
+  if (!c) return false;
+  return (Math.max(c.r, c.g, c.b) - Math.min(c.r, c.g, c.b)) >= threshold;
+}
+
+function getHue(c) {
+  if (!c) return 0;
+  const r = c.r / 255, g = c.g / 255, b = c.b / 255;
+  const max = Math.max(r, g, b), min = Math.min(r, g, b);
+  if (max === min) return 0;
+  const d = max - min;
+  let h;
+  if (max === r) h = ((g - b) / d + (g < b ? 6 : 0)) / 6;
+  else if (max === g) h = ((b - r) / d + 2) / 6;
+  else h = ((r - g) / d + 4) / 6;
+  return Math.round(h * 360);
+}
+
+function colorToHex(c) {
+  if (!c) return '?';
+  return '#' + [c.r, c.g, c.b].map(v => v.toString(16).padStart(2, '0')).join('');
+}
+
+export {
+  isNeutralColor,
+  parseRgb,
+  relativeLuminance,
+  contrastRatio,
+  parseGradientColors,
+  hasChroma,
+  getHue,
+  colorToHex,
+};

.agents/skills/impeccable/scripts/detector/shared/constants.mjs

@@ -0,0 +1,101 @@
+// ─── Section 1: Constants ───────────────────────────────────────────────────
+
+const SAFE_TAGS = new Set([
+  'blockquote', 'nav', 'a', 'input', 'textarea', 'select',
+  'pre', 'code', 'span', 'th', 'td', 'tr', 'li', 'label',
+  'button', 'hr', 'html', 'head', 'body', 'script', 'style',
+  'link', 'meta', 'title', 'br', 'img', 'svg', 'path', 'circle',
+  'rect', 'line', 'polyline', 'polygon', 'g', 'defs', 'use',
+]);
+
+// Per-check safe-tags override for the border (side-tab / border-accent)
+// rule. We intentionally re-allow <label> here because card-shaped clickable
+// labels (e.g. .checklist-item wrapping a checkbox + content) are one of the
+// canonical side-tab anti-pattern shapes and must be detected. The rule's
+// other preconditions (non-neutral color, width >= 2px on a single side,
+// radius > 0 or width >= 3, element size >= 20x20 in the browser path)
+// already filter out plain inline form labels so this does not introduce
+// false positives. See modern-color-borders.html for the test matrix.
+const BORDER_SAFE_TAGS = new Set(
+  [...SAFE_TAGS].filter(t => t !== 'label')
+);
+
+const OVERUSED_FONTS = new Set([
+  // Older monoculture (still ubiquitous):
+  'inter', 'roboto', 'open sans', 'lato', 'montserrat', 'arial', 'helvetica',
+  // Newer monoculture (the Anthropic-skill / Vercel / GitHub default wave):
+  'fraunces', 'instrument sans', 'instrument serif',
+  'geist', 'geist sans', 'geist mono',
+  'mona sans',
+  'plus jakarta sans', 'space grotesk', 'recoleta',
+]);
+
+// Brand-associated fonts: don't flag these as "overused" on the brand's own domains.
+// Keys are font names, values are arrays of hostname suffixes where the font is allowed.
+const GOOGLE_DOMAINS = [
+  'google.com', 'youtube.com', 'android.com', 'chromium.org',
+  'chrome.com', 'web.dev', 'gstatic.com', 'firebase.google.com',
+];
+const VERCEL_DOMAINS = ['vercel.com', 'nextjs.org', 'v0.app'];
+const GITHUB_DOMAINS = ['github.com', 'githubnext.com'];
+const BRAND_FONT_DOMAINS = {
+  'roboto': GOOGLE_DOMAINS,
+  'google sans': GOOGLE_DOMAINS,
+  'product sans': GOOGLE_DOMAINS,
+  'geist': VERCEL_DOMAINS,
+  'geist sans': VERCEL_DOMAINS,
+  'geist mono': VERCEL_DOMAINS,
+  'mona sans': GITHUB_DOMAINS,
+};
+
+function isBrandFontOnOwnDomain(font) {
+  if (typeof location === 'undefined') return false;
+  const allowed = BRAND_FONT_DOMAINS[font];
+  if (!allowed) return false;
+  const host = location.hostname.toLowerCase();
+  return allowed.some(suffix => host === suffix || host.endsWith('.' + suffix));
+}
+
+const GENERIC_FONTS = new Set([
+  'serif', 'sans-serif', 'monospace', 'cursive', 'fantasy',
+  'system-ui', 'ui-serif', 'ui-sans-serif', 'ui-monospace', 'ui-rounded',
+  '-apple-system', 'blinkmacsystemfont', 'segoe ui',
+  'inherit', 'initial', 'unset', 'revert',
+]);
+
+// WCAG large text thresholds are defined in points: 18pt normal text and
+// 14pt bold text. Browsers expose font-size in CSS pixels at 96px per inch.
+const WCAG_LARGE_TEXT_PX = 18 * (96 / 72);
+const WCAG_LARGE_BOLD_TEXT_PX = 14 * (96 / 72);
+
+// Serif faces that show up in italic-display heroes. The rule also fires when
+// the primary face is unknown but the stack ends in the generic `serif` token,
+// which catches custom/private faces with a serif fallback.
+const KNOWN_SERIF_FONTS = new Set([
+  'fraunces', 'recoleta', 'newsreader', 'playfair display', 'playfair',
+  'cormorant', 'cormorant garamond', 'garamond', 'eb garamond',
+  'tiempos', 'tiempos headline', 'tiempos text',
+  'lora', 'vollkorn', 'spectral',
+  'source serif pro', 'source serif 4', 'source serif',
+  'ibm plex serif', 'merriweather',
+  'libre caslon', 'libre baskerville', 'baskerville',
+  'georgia', 'times new roman', 'times',
+  'dm serif display', 'dm serif text',
+  'instrument serif', 'gt sectra', 'ogg', 'canela',
+  'freight display', 'freight text',
+]);
+
+export {
+  SAFE_TAGS,
+  BORDER_SAFE_TAGS,
+  OVERUSED_FONTS,
+  GOOGLE_DOMAINS,
+  VERCEL_DOMAINS,
+  GITHUB_DOMAINS,
+  BRAND_FONT_DOMAINS,
+  isBrandFontOnOwnDomain,
+  GENERIC_FONTS,
+  WCAG_LARGE_TEXT_PX,
+  WCAG_LARGE_BOLD_TEXT_PX,
+  KNOWN_SERIF_FONTS,
+};

.agents/skills/impeccable/scripts/detector/shared/page.mjs

@@ -0,0 +1,7 @@
+/** Check if content looks like a full page (not a component/partial) */
+function isFullPage(content) {
+  const stripped = content.replace(/<!--[\s\S]*?-->/g, '');
+  return /<!doctype\s|<html[\s>]|<head[\s>]/i.test(stripped);
+}
+
+export { isFullPage };