Fix PDF viewer: accept token via query param for iframe embedding

Add complete feature instructions for developer handoff

Fix 1-4: Manual grouping, PDF images, style upload, dashboard

Implement full user journey: PDF viewer, AI summary, checklist CRUD, style drawer, corrective PDF

Upgrade AI chat to super-intelligent QC mentor with 22 Indian languages

Add Puppeteer PDF generation + fix image page tracking

Fix: rename useAuth.js to .jsx for Vite JSX support

Remove Puppeteer/Chromium for lighter Docker build

Initial commit: QualityLens - Jewelry QC Management System