968e64a57e
- Remove complex style preservation system from editor - Simplify markdown conversion back to straightforward approach - Remove StyleContext class and style-aware conversion methods - Switch content type from 'html' back to 'markdown' for consistency - Clean up editor workflow to focus on core markdown editing - Remove ~500 lines of unnecessary style complexity This completes the UI unification cleanup by removing the overly complex style preservation system that was making the editor harder to maintain.