- Fix misleading claims about WeakMap-based caching (all caching code is commented out)
- Correct interface comment from "contacts cached, settings fresh" to "always fresh (no caching)"
- Add comprehensive clarification section explaining caching confusion
- Document that caching system was planned but never implemented
- Update performance optimizations section to reflect actual no-caching reality
The documentation now accurately reflects that this is a no-caching system
that provides convenience methods for database operations, not a
performance-optimized caching system as previously claimed.