fix: 外勤医疗预置干员保留初始索敌顺序 (#315)

docs/history/0.2.2.md

@@ -1575,3 +1575,22 @@ Notes for the integrator
   none left) or 「{who}：没有可获得的同盟约干员」; the item is still destroyed. en / ja / ko / zh-TW.
 - **Golden**: unchanged. **Tests**: test/content/items.test.js (the #207 cases assert the toast; a new case: one 缪尔赛思,
   her pool taken → the bond toast), test/content/feedback5-cb1-pins.test.js 45 (the toast below level 6, none at 6).
+
+### 27.64 外勤医疗's pre-battle map character retains its earlier aggro when Touch replaces it — `content/bands/battle.js installMapChars`
+
+- **Seen**: the user observes 预备干员-医疗 already visible on the field during preparation. With two elite operators,
+  `battleStart` creates Touch only after all board units have deployed. This gives the sim unit the latest `aggroSeq`;
+  a local boss test makes “萨米的意志” select Touch's column first. In the
+  [official recording](https://b23.tv/JZLqdSO) at about 4:57, Touch stands at the right edge while 冰凌 falls on a
+  different column. The recording supports a mismatch, but does not by itself isolate every other target's taunt.
+- **Official**: [PRTS 卫戍协议：盟约 下半](https://prts.wiki/w/%E5%8D%AB%E6%88%8D%E5%8D%8F%E8%AE%AE%EF%BC%9A%E7%9B%9F%E7%BA%A6_%E4%B8%8B%E5%8D%8A)
+  describes a 预备干员-医疗 appearing on every player's field and being replaced by Touch at combat start if at least two
+  elite operators stand there. PRTS 索敌 places the last deployed target ahead at equal taunt. [ASSUMED]: the
+  replacement retains the map character's pre-deployment aggro position; the sources do not fix its exact numeric rank.
+- **Now**: only the 外勤医疗 map character (预备干员-医疗 or Touch) gets an early `aggroSeq` after its `battleStart`
+  spawn. Its actual deployment event and `deploySeq` stay unchanged. Operators, ordinary initial summons and
+  mid-battle summons retain their existing priority.
+- **Golden**: one value moves in `test/golden/matches.json`: `coop2-NORMAL-14-standins`, player `h_0`'s
+  `dmgDealt` 3,000,543 → 2,999,081. That match fields 外勤医疗, so its changed initial target order can alter damage;
+  every other recorded result is unchanged. **Tests**: `test/content/bands.test.js` checks both variants' priority and
+  “萨米的意志” 冰凌 selection on solo and two-player boss fields.