feat: preview resonance pursuit pairs in formation

scripts/verify-sortie-synergy.mjs

@@ -9,6 +9,7 @@ const server = await createServer({
 try {
   const {
     compareSortieSynergy,
+    evaluateSortiePursuitPairs,
     evaluateSortieSynergy,
     firstPursuitRolePreviewSummaries,
     firstPursuitSynergyBattleId,
@@ -121,6 +122,70 @@ try {
   );
   assert(JSON.stringify({ members, bonds }) === frozenInputs, 'Expected synergy evaluation not to mutate its inputs.');
 
+  const pursuitMembers = [
+    { id: 'selected-a', name: 'Selected A', role: 'front', terrainScore: 100 },
+    { id: 'selected-b', name: 'Selected B', role: 'flank', terrainScore: 100 },
+    { id: 'candidate-70', name: 'Candidate 70', role: 'support', terrainScore: 100 },
+    { id: 'candidate-50', name: 'Candidate 50', role: 'support', terrainScore: 100 },
+    { id: 'candidate-49', name: 'Candidate 49', role: 'support', terrainScore: 100 }
+  ];
+  const pursuitBonds = [
+    { id: 'active-70-zeta', title: 'Active Tie', unitIds: ['selected-a', 'selected-b'], level: 70 },
+    { id: 'active-70-alpha', title: 'Active Tie', unitIds: ['selected-b', 'selected-a'], level: 70 },
+    { id: 'active-50', title: 'Active 50', unitIds: ['selected-a', 'selected-b'], level: 50 },
+    { id: 'opportunity-70-zeta', title: 'Zeta Opportunity', unitIds: ['selected-a', 'candidate-70'], level: 70 },
+    { id: 'opportunity-70-alpha', title: 'Alpha Opportunity', unitIds: ['candidate-70', 'selected-a'], level: 70 },
+    { id: 'opportunity-50-duplicate', title: 'Opportunity 50 Duplicate', unitIds: ['selected-a', 'candidate-70'], level: 50 },
+    { id: 'opportunity-50', title: 'Opportunity 50', unitIds: ['selected-b', 'candidate-50'], level: 50 },
+    { id: 'opportunity-49', title: 'Opportunity 49', unitIds: ['selected-a', 'candidate-49'], level: 49 }
+  ];
+  const frozenPursuitInputs = JSON.stringify({ pursuitMembers, pursuitBonds });
+  const pursuitPairs = evaluateSortiePursuitPairs({
+    members: pursuitMembers,
+    bonds: pursuitBonds,
+    selectedUnitIds: ['selected-a', 'selected-b', 'selected-a']
+  });
+  assert(
+    pursuitPairs.activePairs.map((bond) => `${bond.id}:${bond.chainRate}`).join(',') === 'active-70-alpha:18',
+    `Expected a selected pair to keep its highest-level bond and resolve level ties by title/id while normalizing duplicate selections: ${JSON.stringify(pursuitPairs.activePairs)}`
+  );
+  assert(
+    pursuitPairs.selectableOpportunities.map((bond) => `${bond.id}:${bond.chainRate}`).join(',') === 'opportunity-70-alpha:18,opportunity-50:8',
+    `Expected opportunities to keep one strongest unordered pair, resolve ties deterministically, expose Lv70/Lv50 rates, and hide Lv49: ${JSON.stringify(pursuitPairs.selectableOpportunities)}`
+  );
+  assert(
+    pursuitPairs.selectableOpportunities[0]?.selectedPartnerId === 'selected-a' &&
+      pursuitPairs.selectableOpportunities[0]?.selectedPartnerName === 'Selected A' &&
+      pursuitPairs.selectableOpportunities[0]?.candidateUnitId === 'candidate-70' &&
+      pursuitPairs.selectableOpportunities[0]?.candidateUnitName === 'Candidate 70',
+    `Expected pursuit opportunities to identify the selected partner and selectable candidate: ${JSON.stringify(pursuitPairs.selectableOpportunities[0])}`
+  );
+  const unavailablePursuitPairs = evaluateSortiePursuitPairs({
+    members: pursuitMembers,
+    bonds: pursuitBonds,
+    selectedUnitIds: ['selected-a', 'selected-b'],
+    selectableUnitIds: ['selected-a', 'selected-b', 'candidate-50', 'candidate-49']
+  });
+  assert(
+    unavailablePursuitPairs.selectableOpportunities.length === 1 &&
+      unavailablePursuitPairs.selectableOpportunities[0]?.candidateUnitId === 'candidate-50',
+    `Expected unavailable candidates and already-selected ids to stay out of pursuit opportunities: ${JSON.stringify(unavailablePursuitPairs.selectableOpportunities)}`
+  );
+  const promotedPursuitPairs = evaluateSortiePursuitPairs({
+    members: pursuitMembers,
+    bonds: pursuitBonds,
+    selectedUnitIds: ['selected-a', 'selected-b', 'candidate-70']
+  });
+  assert(
+    promotedPursuitPairs.activePairs.some((bond) => bond.id === 'opportunity-70-alpha' && bond.chainRate === 18) &&
+      promotedPursuitPairs.selectableOpportunities.every((bond) => bond.candidateUnitId !== 'candidate-70'),
+    `Expected a selected candidate to move from opportunity to active pair: ${JSON.stringify(promotedPursuitPairs)}`
+  );
+  assert(
+    JSON.stringify({ pursuitMembers, pursuitBonds }) === frozenPursuitInputs,
+    'Expected pursuit-pair evaluation not to mutate its inputs.'
+  );
+
   const orderPerformance = {
     selectedUnitIds: ['front-unit', 'flank-unit', 'support-unit'],
     formationAssignments: {