Add storefront features: admin dashboard, warranty calculator, build configurator, serverless APIs, assets, and E2E tests

[vctb12]

Motivation

• Provide a production-ready, modular static storefront for Netlify with UAE AED/VAT rules, improved UX, and server-backed optional features.
• Harden admin and order flows to support optional Supabase persistence and email notifications while keeping demo/local fallbacks.
• Improve maintainability by centralizing header/footer partials and extracting small JS libs for API, rules, security, and error logging.

Description

• New pages and content: added build.html, changelog.html, health.html, payment-demo.html, extended blog/AR pages, and upgraded index.html, products.html, checkout.html, admin.html, warranty.html, contact.html, and other templates to use shared partials (partials/header.html, partials/footer.html) and richer metadata/SEO tags.
• Admin and dashboard improvements: client-side admin enhancements (search/filters, KPIs, CSV export, stock overrides), deferred boot of shared partials, token-based auth flow and improved feedback.
• Serverless functions: added/updated Netlify functions including createOrder, adminLogin (rate limiting + safer responses), ordersList, createPaymentIntent, markOrderPaid, notifyCapture, chat (OpenAI optional demo fallback), and _utils.js helper changes.
• Product & assets: enriched products.json with warranty/meta fields and added many SVG assets under assets/products/, placeholder/image improvements, warrantyRules.json and buildRules.json for calculators.
• Frontend libraries & pages: new JS modules under js/lib and js/pages (api.js, dom.js, format.js, rules.js, security.js, logger.js, chat.js, warranty.js) plus enhancements in script.js (partial loader, error UI, chat init, utilities).
• Checkout & payment: demo-first payment intent flow and simulated payment lifecycle via createPaymentIntent and payment-demo.html, plus invoice rendering and server-side order validation, Supabase save and optional email via Resend.
• Tooling & QA: add package.json, playwright.config.ts, e2e tests in tests/e2e, asset/link validation scripts (scripts/validate-assets.mjs, scripts/audit-links.mjs), netlify.toml redirects, sitemap.xml, and robots.txt.

Testing

• Ran static asset validation and link audit via node scripts/validate-assets.mjs and node scripts/audit-links.mjs, which completed successfully (no broken local assets/links reported).
• Executed end-to-end suite via Playwright using npm run test:e2e (driven by playwright.config.ts) and the tests passed, validating core routes, chat demo, warranty calculator, product notify/add flows, admin dashboard, build page and demo payment lifecycle.
• Local site preview command used during development is python -m http.server 4173 to exercise the e2e webServer target and manual smoke checks.
• CI-ready scripts were added in package.json to reproduce the above automated checks (validate-assets, audit-links, test:e2e).

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Codex Task

[netlify]

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