feat: add new skills for coding standards, continuous learning, detail layout, form layout, project guidelines, security review, and verification loop

- Introduced coding standards for TypeScript and React in SKILL.md.
- Added continuous learning skill with configuration and evaluation scripts.
- Created detail layout guidelines for read-only pages.
- Established form layout rules for data-entry forms.
- Documented project guidelines for the frontend monorepo.
- Implemented security review checklist for frontend/Electron applications.
- Developed a verification loop skill for comprehensive session checks.

This commit enhances the skill set available for developers, ensuring adherence to best practices and improving code quality.

.cursor/commands/test-coverage.md

@@ -0,0 +1,22 @@
+# Test Coverage
+
+Analyze Vitest coverage and add missing tests:
+
+1. Run `pnpm test` (packages that support coverage: `pnpm --filter <pkg> test -- --coverage` when configured)
+
+2. Identify files below 80%
+
+3. For each under-covered file:
+   - Unit tests for validators, transformers, utils, stores
+   - Testing Library tests for `@repo/ui` components
+   - Journey tests for critical `apps/web` flows (mock data services)
+
+4. Verify new tests pass
+
+5. Show before/after coverage
+
+Focus on:
+- Happy path
+- Error handling
+- Edge cases (null, undefined, empty)
+- Zod boundary conditions (`rangeLength`)