Add test coverage checklist, report template, and stack matrix for ecommerce project

- Created a test coverage checklist to ensure comprehensive testing of backend and frontend components.
- Added a test report template to standardize reporting on test execution results and gaps.
- Introduced a test stack matrix to guide the selection of testing tools and frameworks for backend and frontend.
- Established a skill for repairing failing tests, including a failure triage checklist and a test repair template.
- Documented recommended MCP stack for ecommerce development with FastAPI and React/Next.js.
- Developed a detailed README outlining the project structure, agent capabilities, and recommended workflows.
- Compiled a comprehensive workflow guide detailing step-by-step commands for project setup, testing, and SEO implementation.

site-fullstack/.github/skills/ecommerce-seo-strategy/assets/technical-seo-checklist.md

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+# Technical SEO Checklist
+
+## Crawl and indexation
+- Confirm indexable money pages and noindex low-value or duplicate pages.
+- Define robots policy for search, cart, account, internal filters, and thin utility pages.
+- Ensure XML sitemaps exist for key page groups and exclude noindex URLs.
+
+## Canonicalization and duplication
+- Define canonicals for categories, filtered states, sorting states, pagination, and product variants.
+- Prevent duplicate content across collection pages, brand pages, and promotional landings.
+
+## Rendering and architecture
+- Ensure key content is available in server-rendered or reliably rendered HTML.
+- Confirm crawlers can see titles, headings, main content, structured data, and internal links.
+
+## Performance and Core Web Vitals
+- Optimize LCP, INP, and CLS on category and product pages.
+- Control image size, font loading, script weight, and third-party bloat.
+- Avoid layout shifts from banners, lazy media, and client-only widgets.
+
+## Media and assets
+- Use descriptive image filenames where practical.
+- Provide alt text with functional accuracy, not keyword stuffing.
+- Generate responsive image variants and preload only what is truly critical.
+
+## Navigation and page discovery
+- Ensure deep categories and products are reachable through internal links.
+- Use breadcrumbs and clear taxonomy-based navigation.
+
+## International and local SEO when relevant
+- Use hreflang carefully only when multiple locales truly exist.
+- Align locale routing, canonicals, translated metadata, and sitemap structure.