SCOPONE-0005 iteration 8
- Replace JSON.parse/stringify deepClone with hand-written cloneState() (~10-50x faster)
- Export cloneState from engine.ts, use in applyMove and generateSamples
- Master: reduce samples 24→10 (14 endgame), depth 8→6 (8 endgame)
- Add 1.5s time budget with early termination in masterMove and alphaBeta
- evaluateFast(): single-pass pile scan, zero array allocations at leaf nodes
- Simplified move ordering in alphaBeta (captures-first, no per-move eval)
- Skip countScopaThreats when tableSum >= 11 (impossible to clear)
- Remove unused calcPrimiera import from ai.ts
- findCaptures() returns each direct match as separate option plus sum subsets
- highlightMultipleCaptures() uses distinct colors per capture option
- clicking highlighted table cards confirms that option's capture
