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/keyword-intent-framework.md

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+# Keyword Intent Framework
+
+## Intent buckets
+- Transactional: buy-now, price, delivery, in-stock, order intent.
+- Commercial investigation: best, compare, review, top, versus, alternatives.
+- Informational: how to choose, how to use, care guides, ingredient guides, compatibility guides.
+- Navigational and brand: brand, collection, store name, product line, branded queries.
+
+## Mapping rules
+- Homepage should target broad category and brand-level demand, not all keywords.
+- Category and subcategory pages should target the highest-volume commercial and transactional themes.
+- Product pages should target explicit product, variant, model, SKU, brand, and long-tail modifiers.
+- Guide and FAQ pages should support commercial pages and capture informational demand.
+
+## Output fields
+- Keyword theme
+- Primary intent
+- Suggested landing page type
+- Funnel stage
+- Priority
+- Required content blocks
+- Internal link targets
+
+## Ecommerce caution points
+- Do not create indexable pages for every low-value filter combination.
+- Avoid cannibalization between category pages, collection pages, and blog content.
+- Prefer strong category and brand hubs over thin near-duplicate pages.