Add officer roster reserve growth

src/game/state/campaignState.ts

@@ -1,3 +1,4 @@
+import { equipmentExpToNext, equipmentSlots } from '../data/battleItems';
 import type { BattleBond, UnitData } from '../data/scenario';
 
 export type BattleObjectiveSnapshot = {
@@ -96,6 +97,15 @@ export type CampaignBondProgressSnapshot = {
   battleExp: number;
 };
 
+export type CampaignReserveTrainingSnapshot = {
+  unitId: string;
+  name: string;
+  expGained: number;
+  equipmentExpGained: number;
+  level: number;
+  exp: number;
+};
+
 export type CampaignBattleSettlement = {
   battleId: string;
   battleTitle: string;
@@ -105,6 +115,7 @@ export type CampaignBattleSettlement = {
   objectives: BattleObjectiveSnapshot[];
   units: CampaignUnitProgressSnapshot[];
   bonds: CampaignBondProgressSnapshot[];
+  reserveTraining?: CampaignReserveTrainingSnapshot[];
   completedAt: string;
 };
 
@@ -265,12 +276,15 @@ export function setFirstBattleReport(report: FirstBattleReport) {
   state.step = reportClone.outcome === 'victory' ? victoryStep : retryStep;
   state.gold = Math.max(0, state.gold - (previousSettlement?.rewardGold ?? 0) + reportClone.rewardGold);
   state.roster = mergeRosterProgress(state.roster, reportClone.units.filter((unit) => unit.faction === 'ally'));
+  const reserveTraining = previousSettlement || reportClone.outcome !== 'victory'
+    ? previousSettlement?.reserveTraining ?? []
+    : applyReserveTrainingProgress(state.roster, reportClone.units.filter((unit) => unit.faction === 'ally'));
   state.bonds = reportClone.bonds.map(cloneBondSnapshot);
   state.completedCampDialogues = completedCampDialogues;
   state.completedCampVisits = completedCampVisits;
   state.inventory = applyRewardDelta(state.inventory, previousSettlement?.itemRewards ?? [], -1);
   state.inventory = applyRewardDelta(state.inventory, reportClone.itemRewards, 1);
-  state.battleHistory[battleId] = createBattleSettlement(reportClone);
+  state.battleHistory[battleId] = createBattleSettlement(reportClone, reserveTraining);
   state.latestBattleId = battleId;
   state.updatedAt = new Date().toISOString();
 
@@ -492,7 +506,7 @@ function advanceBond(bond: CampBondSnapshot, amount: number) {
   }
 }
 
-function createBattleSettlement(report: FirstBattleReport): CampaignBattleSettlement {
+function createBattleSettlement(report: FirstBattleReport, reserveTraining: CampaignReserveTrainingSnapshot[] = []): CampaignBattleSettlement {
   return {
     battleId: report.battleId,
     battleTitle: report.battleTitle,
@@ -518,6 +532,7 @@ function createBattleSettlement(report: FirstBattleReport): CampaignBattleSettle
       exp: bond.exp,
       battleExp: bond.battleExp
     })),
+    reserveTraining: reserveTraining.map((entry) => ({ ...entry })),
     completedAt: report.createdAt
   };
 }
@@ -540,6 +555,50 @@ function mergeRosterProgress(currentRoster: UnitData[], deployedUnits: UnitData[
   return Array.from(merged.values());
 }
 
+function applyReserveTrainingProgress(roster: UnitData[], deployedUnits: UnitData[]): CampaignReserveTrainingSnapshot[] {
+  const deployedIds = new Set(deployedUnits.map((unit) => unit.id));
+  return roster
+    .filter((unit) => unit.faction === 'ally' && !deployedIds.has(unit.id))
+    .map((unit) => {
+      const expGained = 6;
+      const equipmentExpGained = 2;
+      advanceUnitExp(unit, expGained);
+      advanceReserveEquipment(unit, equipmentExpGained);
+      return {
+        unitId: unit.id,
+        name: unit.name,
+        expGained,
+        equipmentExpGained,
+        level: unit.level,
+        exp: unit.exp
+      };
+    });
+}
+
+function advanceUnitExp(unit: UnitData, amount: number) {
+  let exp = unit.exp + amount;
+  while (unit.level < 99 && exp >= 100) {
+    exp -= 100;
+    unit.level += 1;
+    unit.maxHp += 2;
+    unit.hp = Math.min(unit.maxHp, unit.hp + 2);
+    unit.attack += 1;
+  }
+  unit.exp = unit.level >= 99 ? Math.min(exp, 100) : exp;
+}
+
+function advanceReserveEquipment(unit: UnitData, amount: number) {
+  equipmentSlots.forEach((slot) => {
+    const state = unit.equipment[slot];
+    let exp = state.exp + amount;
+    while (state.level < 9 && exp >= equipmentExpToNext(state.level)) {
+      exp -= equipmentExpToNext(state.level);
+      state.level += 1;
+    }
+    state.exp = state.level >= 9 ? Math.min(exp, equipmentExpToNext(state.level)) : exp;
+  });
+}
+
 function parseRewardLabel(reward: string) {
   const normalized = reward.replace(/\s+/g, ' ').trim();
   const match = normalized.match(/^(.*?)(?:\s*[+xX]?\s*(\d+))$/);