Add Xu Province recruit sortie flow

src/game/state/campaignState.ts

@@ -271,6 +271,60 @@ export function applyCampBondExp(dialogueId: string, bondId: string, amount: num
   return cloneReport(state.firstBattleReport);
 }
 
+export function ensureCampaignRosterUnits(units: UnitData[], bonds: BattleBond[] = []) {
+  const state = ensureCampaignState();
+  let changed = false;
+  const existingUnitIds = new Set(state.roster.map((unit) => unit.id));
+
+  units.forEach((unit) => {
+    if (existingUnitIds.has(unit.id)) {
+      return;
+    }
+    state.roster.push(cloneUnit(unit));
+    existingUnitIds.add(unit.id);
+    changed = true;
+  });
+
+  const existingBondIds = new Set(state.bonds.map((bond) => bond.id));
+  bonds.forEach((bond) => {
+    if (existingBondIds.has(bond.id)) {
+      return;
+    }
+    state.bonds.push(createCampBondSnapshot(bond));
+    existingBondIds.add(bond.id);
+    changed = true;
+  });
+
+  if (state.firstBattleReport) {
+    const reportUnitIds = new Set(state.firstBattleReport.units.map((unit) => unit.id));
+    units.forEach((unit) => {
+      if (reportUnitIds.has(unit.id)) {
+        return;
+      }
+      state.firstBattleReport?.units.push(cloneUnit(unit));
+      reportUnitIds.add(unit.id);
+      changed = true;
+    });
+
+    const reportBondIds = new Set(state.firstBattleReport.bonds.map((bond) => bond.id));
+    bonds.forEach((bond) => {
+      if (reportBondIds.has(bond.id)) {
+        return;
+      }
+      state.firstBattleReport?.bonds.push(createCampBondSnapshot(bond));
+      reportBondIds.add(bond.id);
+      changed = true;
+    });
+  }
+
+  if (changed) {
+    state.updatedAt = new Date().toISOString();
+    persistCampaignState(state);
+  }
+
+  return cloneCampaignState(state);
+}
+
 function ensureCampaignState() {
   if (!campaignState) {
     campaignState = readStoredCampaignState() ?? createInitialCampaignState();
@@ -433,3 +487,11 @@ function cloneBondSnapshot(bond: CampBondSnapshot): CampBondSnapshot {
     unitIds: [...bond.unitIds] as [string, string]
   };
 }
+
+function createCampBondSnapshot(bond: BattleBond): CampBondSnapshot {
+  return {
+    ...bond,
+    unitIds: [...bond.unitIds] as [string, string],
+    battleExp: 0
+  };
+}