Convert all prompts to skills and update plugin manifests

Co-authored-by: aaronpowell <434140+aaronpowell@users.noreply.github.com>

skills/javascript-typescript-jest/SKILL.md

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+---
+name: javascript-typescript-jest
+description: 'Best practices for writing JavaScript/TypeScript tests using Jest, including mocking strategies, test structure, and common patterns.'
+---
+
+### Test Structure
+- Name test files with `.test.ts` or `.test.js` suffix
+- Place test files next to the code they test or in a dedicated `__tests__` directory
+- Use descriptive test names that explain the expected behavior
+- Use nested describe blocks to organize related tests
+- Follow the pattern: `describe('Component/Function/Class', () => { it('should do something', () => {}) })`
+
+### Effective Mocking
+- Mock external dependencies (APIs, databases, etc.) to isolate your tests
+- Use `jest.mock()` for module-level mocks
+- Use `jest.spyOn()` for specific function mocks
+- Use `mockImplementation()` or `mockReturnValue()` to define mock behavior
+- Reset mocks between tests with `jest.resetAllMocks()` in `afterEach`
+
+### Testing Async Code
+- Always return promises or use async/await syntax in tests
+- Use `resolves`/`rejects` matchers for promises
+- Set appropriate timeouts for slow tests with `jest.setTimeout()`
+
+### Snapshot Testing
+- Use snapshot tests for UI components or complex objects that change infrequently
+- Keep snapshots small and focused
+- Review snapshot changes carefully before committing
+
+### Testing React Components
+- Use React Testing Library over Enzyme for testing components
+- Test user behavior and component accessibility
+- Query elements by accessibility roles, labels, or text content
+- Use `userEvent` over `fireEvent` for more realistic user interactions
+
+## Common Jest Matchers
+- Basic: `expect(value).toBe(expected)`, `expect(value).toEqual(expected)`
+- Truthiness: `expect(value).toBeTruthy()`, `expect(value).toBeFalsy()`
+- Numbers: `expect(value).toBeGreaterThan(3)`, `expect(value).toBeLessThanOrEqual(3)`
+- Strings: `expect(value).toMatch(/pattern/)`, `expect(value).toContain('substring')`
+- Arrays: `expect(array).toContain(item)`, `expect(array).toHaveLength(3)`
+- Objects: `expect(object).toHaveProperty('key', value)`
+- Exceptions: `expect(fn).toThrow()`, `expect(fn).toThrow(Error)`
+- Mock functions: `expect(mockFn).toHaveBeenCalled()`, `expect(mockFn).toHaveBeenCalledWith(arg1, arg2)`