Pure Chess

Added smarter AI options: Choose between Depth mode and Timed mode Fine-tune how long the AI thinks in Timed mode New learning cues on the board: - Last-move arrow - Check-threat arrow - Cleaner, thinner cue arrow style Improved Capture Score screen: - Capture Insights section added - Most valuable captured piece for each side - Trade balance summary - Capture timeline view Better game continuity: - Game position and settings now persist between sessions - Continue where you left off automatically Improved accessibility and usability: - Better semantics for key controls and board context - Settings panel updated to be scrollable on smaller screens Stability and polish: - Promotion handling improvements for AI moves - Stalemate handling and messaging clarified - UI/test updates and general bug fixes