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/tdd.md

@@ -34,12 +34,12 @@ User: /tdd Add validation for the full-page name field
 
 ```typescript
 // full-page.validator.test.ts
-import { createFullPageSchema } from './full-page.validator'
+import { createFullPageSchema } from './full-page.validator';
 
 it('rejects an empty name', () => {
-  const schema = createFullPageSchema((k) => k)
-  expect(schema.safeParse({ code: 'ABC', name: '' }).success).toBe(false)
-})
+  const schema = createFullPageSchema((k) => k);
+  expect(schema.safeParse({ code: 'ABC', name: '' }).success).toBe(false);
+});
 ```
 
 ```bash