Add PDF price lists to 7 product pages with ราคาสินค้า sections

- Added 11 PDF price list files to public/documents/
- Updated 7 product pages with downloadable PDF sections:
  - ฉนวนหุ้มท่อ-pipe-insulation (4 PDFs)
  - เทอร์โมเบรค-thermobreak (1 PDF)
  - ท่อhdpe (1 PDF)
  - เม็กกรู๊ฟ-คับปลิ้ง (1 PDF)
  - ท่อระบายน้ำ-3-ชั้น-ไซเลนท (2 PDFs)
  - ท่อพีพีอาร์ตราช้าง (1 PDF)
  - ท่อ-ppr-thai-ppr (1 PDF)
- Updated AGENTS.md files with PDF/document structure

AGENTS.md

@@ -0,0 +1,90 @@
+# dealplustech-astro/
+
+**Generated:** 2026-03-27
+**Branch:** main
+
+## OVERVIEW
+
+Astro 5.x Thai industrial e-commerce site (dealplustech.co.th). Migrated from WordPress. PDPA-compliant cookie consent, Umami analytics, 63 pages, 45 Thai-named routes.
+
+## STRUCTURE
+
+```
+dealplustech-astro/
+├── src/
+│   ├── components/     # .astro components (common/, consent/, product/, ui/)
+│   ├── content/        # Astro content collections (blog/, products/) - EMPTY
+│   ├── layouts/        # BaseLayout.astro (root HTML shell)
+│   ├── pages/          # 45 Thai-named static routes + index.astro
+│   ├── styles/         # global.css
+│   ├── images/         # ppr-tables/ (product reference images)
+│   └── lib/            # EMPTY
+├── public/
+│   ├── images/         # All product/corporate images (dist/, public/ mirrored)
+│   └── documents/      # PDF price lists (11 PDFs linked from product pages)
+├── db/                 # EMPTY (SQLite/Turso for consent logs at runtime)
+├── astro.config.mjs    # Astro config: site URL, i18n (th only), sitemap
+├── tailwind.config.js  # Kanit font, custom colors (primary green, accent orange)
+├── Dockerfile          # Multi-stage: node:20-alpine → nginx:alpine
+└── package.json        # Scripts: dev, build, preview, db:push, db:seed
+```
+
+## WHERE TO LOOK
+
+| Task | Location | Notes |
+|------|----------|-------|
+| Global layout | `src/layouts/BaseLayout.astro` | HTML shell, SEO meta, cookie consent |
+| Homepage | `src/pages/index.astro` | 13KB - main entry |
+| Product pages | `src/pages/[thai-url]/index.astro` | 45 static routes |
+| Header/Footer | `src/components/common/` | Header.astro, Footer.astro |
+| Cookie consent | `src/components/consent/` | EMPTY - handled via astro-consent |
+| API routes | `src/pages/api/` | EMPTY - no API routes configured |
+| Content config | `src/content.config.ts` | Content collections definition |
+
+## CONVENTIONS
+
+- **Thai URLs only** — Never use English URLs for routes
+- **Astro components** — `.astro` files with frontmatter imports
+- **Kanit font** — Thai-optimized, set in tailwind.config.js
+- **Cookie consent** — astro-consent package, blocks analytics until accepted
+- **Umami analytics** — Requires `UMAMI_WEBSITE_ID` env var
+- **Admin password** — Required for consent log access at `/admin/consent-logs`
+
+## ANTI-PATTERNS (THIS PROJECT)
+
+- Do NOT add TypeScript entry points (no `src/main.ts`)
+- Do NOT use English route names — SEO depends on Thai URLs
+- Do NOT modify `dist/` directly — it's gitignored build output
+- Do NOT run crawlers from Python in production environment
+- Do NOT commit `.env` files
+
+## UNIQUE STYLES
+
+- **Custom Tailwind colors**: primary (green #3f8b6d), accent (orange #e35c18)
+- **PDPA compliance**: 14-disclosure privacy policy, granular cookie consent
+- **Custom animations**: fade-in, slide-up, slide-down, scale-in
+- **i18n**: Thai-only site, `prefixDefaultLocale: false`
+- **Image organization**: Mirrored `public/images/` and `dist/images/`
+
+## COMMANDS
+
+```bash
+cd dealplustech-astro
+
+npm install          # Install dependencies
+npm run dev          # Dev server at localhost:4321
+npm run build        # Production build → dist/
+npm run preview      # Preview built site
+
+# Database
+npm run db:push      # Push schema to SQLite/Turso
+npm run db:seed      # Seed database
+```
+
+## NOTES
+
+- **No tests** — `package.json` has no test script
+- **Easypanel deploy** — Auto-deploys on push to main, uses `npm install` then `npm run build`
+- **Image pipeline** — Python `image_processor.py` processes downloaded images
+- **Consent logs** — SQLite at `db/consent.db` (gitignored), or Turso if configured
+- **PDF price lists** — 11 PDFs in `public/documents/`, linked from 7 product pages with "ราคาสินค้า" section