chore: implement repo improvements plan (npm scripts, docs, catalog CI, i18n, validator)

- Add npm scripts: validate, validate:strict, index, readme, chain, catalog, build
- Align docs to V4 and 560 skills (GETTING_STARTED, FAQ, BUNDLES, MAINTENANCE, vietnamese)
- build-catalog: output to data/ for catalog, bundles, aliases; add to CI and drift check
- Add yaml dep, Node setup and catalog step in CI; extend auto-commit and drift msg
- Translate CI and MAINTENANCE to English; update CI_DRIFT_FIX and maintenance routine
- QUALITY_BAR/CONTRIBUTING: canonical validator npm run validate; legacy note in validate-skills.js

scripts/build-catalog.js

@@ -326,10 +326,10 @@ function buildCatalog() {
   const aliases = buildAliases(catalog.skills);
   const bundleData = buildBundles(catalog.skills);
 
-  const catalogPath = path.join(ROOT, 'catalog.json');
+  const catalogPath = path.join(ROOT, 'data', 'catalog.json');
   const catalogMarkdownPath = path.join(ROOT, 'CATALOG.md');
-  const bundlesPath = path.join(ROOT, 'bundles.json');
-  const aliasesPath = path.join(ROOT, 'aliases.json');
+  const bundlesPath = path.join(ROOT, 'data', 'bundles.json');
+  const aliasesPath = path.join(ROOT, 'data', 'aliases.json');
 
   fs.writeFileSync(catalogPath, JSON.stringify(catalog, null, 2));
   fs.writeFileSync(catalogMarkdownPath, renderCatalogMarkdown(catalog));

scripts/validate-skills.js

@@ -1,3 +1,7 @@
+/**
+ * Legacy / alternative validator. For CI and PR checks, use scripts/validate_skills.py.
+ * Run: npm run validate (or npm run validate:strict)
+ */
 const fs = require('fs');
 const path = require('path');
 const { listSkillIds, parseFrontmatter } = require('../lib/skill-utils');