chore: update .gitignore and improve coding standards documentation

- Added .cursor/sessions/* to .gitignore to prevent session files from being tracked.
- Enhanced coding standards in SKILL.md by adding semicolons to TypeScript examples for consistency.
- Improved formatting in continuous learning, detail layout, and other SKILL.md files for better readability.

These changes aim to streamline development processes and maintain code quality across the project.

.cursor/commands/test-coverage.md

@@ -7,6 +7,7 @@ Analyze Vitest coverage and add missing tests:
 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)
@@ -16,6 +17,7 @@ Analyze Vitest coverage and add missing tests:
 5. Show before/after coverage
 
 Focus on:
+
 - Happy path
 - Error handling
 - Edge cases (null, undefined, empty)