Hoists DOC_GROUPS into package-docs-catalog.ts so the docs group set lives in one place instead of being duplicated between turbo-generators and the meta.json. Adds tierBucket() so render-index and render-llms-full share one classification function instead of maintaining independent tier-to-section mappings. Adds @tier validation in resolveEntry that throws when a component export has no @tier tag — missing tags were silently defaulting to 'composed'. Changes: - package-docs-catalog.ts: export DOC_GROUPS, tierBucket(), @tier check - render-index.ts: use tierBucket (switch over 4 buckets) - render-llms-full.ts: use tierBucket, drop bucketFor - turbo-generators/config.ts: import DOC_GROUPS, remove local copy - turbo-generators/package.json: add @luke-ui/docs-tools dependency