fix: 外勤医疗预置角色保持初始索敌顺序 (#315)

server/sim/content/bands/battle.js

@@ -238,12 +238,17 @@ function installMapChars(battle) {
   const holders = battle.players.filter((ps) => matchBands(battle, ps.playerId).includes(AMEDIC_BAND));
   if (!holders.length) return;
   battle.on('battleStart', () => {
+    const chars = [];
     for (const ps of holders) {
       const elites = deployedOps(battle, ps.playerId).filter(isElite).length;
-      for (const id of amedicCharsFor(elites, variants)) {
-        const u = spawnMapChar(battle, ps.playerId, id);
-        if (u) fxOn(battle, 'summon', u, keyOf(AMEDIC_BAND), AMEDIC_BAND);
-      }
+      for (const id of amedicCharsFor(elites, variants)) chars.push({ playerId: ps.playerId, id });
+    }
+    for (const [i, { playerId, id }] of chars.entries()) {
+      // The reserve medic occupies this stage slot in preparation; Touch replaces it at battle start. [ASSUMED]
+      // Replacement preserves the slot's priority before ordinary deployments. Shared-field ordering between
+      // prepared characters follows player order, as for other initial placements (lifecycle.js).
+      const u = spawnMapChar(battle, playerId, id, { preBattleAggroSeq: i - chars.length });
+      if (u) fxOn(battle, 'summon', u, keyOf(AMEDIC_BAND), AMEDIC_BAND);
     }
   });
 }