docs: Fix typo "Bold" → "Boild" and enhance documentation

- Fix typo: "Bold Typing" → "Boild Typing" (named after "boiled" - the warm opposite of cold, inspired by "boilerplate")
- Add comprehensive Table of Contents to README
- Improve Quick Start section with collapsible details and step-by-step guide
- Expand API Usage examples:
  - Add PUT/PATCH/DELETE request examples
  - Add error handling patterns
  - Add request interceptors
  - Add timeout and retry logic examples
- Enhance React Query integration section:
  - Add setup instructions with QueryClientProvider
  - Add useQuery examples with query options
  - Add useMutation examples with optimistic updates
  - Add useInfiniteQuery with pagination and infinite scroll
  - Add dependent queries pattern
- Add new Advanced Usage section:
  - Authentication & JWT token refresh flow
  - File upload (single and multiple with progress)
  - Request cancellation with AbortController
  - Logging & debugging
  - Caching strategy
  - Rate limiting
  - Environment-based base URL
- Update SKILL.md with Boild typing terminology and advanced features note

Author: claude