feat(SCOPONE-0003): allow player to choose capture target

- 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

src/game/engine.ts

@@ -41,17 +41,13 @@ export function shuffle<T>(arr: T[]): T[] {
 export function findCaptures(played: Card, table: Card[]): Card[][] {
   const results: Card[][] = [];
 
-  // Check for direct value matches
+  // Each direct-match card is a separate single-card capture option
   const directMatches = table.filter(c => c.value === played.value);
-  if (directMatches.length > 0) {
-    // Must capture exactly one matching card (Italian rules: take one direct match)
-    // Actually: if there's one direct match take it; if multiple, still take all that match
-    // Standard Italian rule: take ALL cards of matching value
-    results.push([...directMatches]);
-    return results; // direct match takes priority, no sum captures allowed
+  for (const dm of directMatches) {
+    results.push([dm]);
   }
 
-  // No direct matches — find subsets that sum to played.value
+  // Also find multi-card subsets that sum to played.value
   const subsets = getSubsets(table);
   for (const subset of subsets) {
     if (subset.length >= 2) {