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/schema-markup-map.md

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+# Schema Markup Map
+
+## By page type
+- Homepage: Organization, WebSite, SearchAction when appropriate.
+- Category or collection pages: ItemList and BreadcrumbList when the page meaningfully lists products.
+- Product pages: Product, Offer, AggregateRating, Review when the data is real and visible.
+- FAQ sections: FAQPage only when the content is actually presented to users.
+- Editorial pages: Article or BlogPosting where appropriate.
+- Store or contact pages: LocalBusiness when location data exists and is accurate.
+
+## Requirements
+- Only mark up data that is visible and truthful.
+- Keep price, availability, brand, SKU, and rating data synchronized with visible content.
+- Validate JSON-LD output after implementation.
+
+## Ecommerce cautions
+- Do not fabricate ratings or reviews.
+- Do not mark every accordion as FAQPage unless it truly qualifies.
+- Keep structured data aligned with canonical URLs and page intent.