feedback1 integrate: no status on a 无敌 + 无法选中 unit; 余 S2 skips 自缚 units; 信仰搅拌机 S2 blocks with too few bullets

- Battle.applyStatus: a unit both invulnerable and untargetable takes no status from the
  other side (PRTS 无敌 "无法被不同阵营选中"), so the status carried by the hit that knocks an
  enemy out (妮芙 S2's fear, a 叙拉古 proc) no longer lands after its 重生 cleanse.
- Flag selfBound (自缚: 守墓石像's 转换模式, the 自缚 leaders, the 胄 parts' anchor): 余 S2
  never teleports such a unit (PRTS 余 S2 备注 "持有自缚的单位不视为可达目标").
- 信仰搅拌机 S2: with fewer than ammo_cost bullets the lethal hit is still blocked, every
  bullet goes and the skill ends; it steps aside while 坚固维式重锤's 不死 window holds her
  (PRTS 备注), replacing the [ASSUMED] no-guard rule.

server/sim/Battle.js

@@ -1280,9 +1280,14 @@ export class Battle {
    * was applied and from where (fear.js stampFear: the fan of 恐惧可达地块 its movement uses). A stunned/sleeping operator
    * releases the enemies it blocks; a feared/levitated/unblockable/attracted enemy is released by its blocker.
    * `statusApplied` reports the final duration and `entered` (the target did not carry the status before).
+   * A unit that is 无敌 and 无法选中 at once (a 重生 in progress, a hovering or 永久无敌 leader part) takes no status from
+   * the other side, `force` included — PRTS 无敌 "无法被不同阵营选中": so a status carried by the very hit that knocked an
+   * enemy out does not land after its 重生's cleanse (DESIGN §21.4).
    */
   applyStatus(target, key, opts = {}) {
     if (!target || !target.alive) return false;
+    const src = opts.source;
+    if (src && src.side && src.side !== target.side && target.s.flags.invulnerable && target.s.flags.untargetable) return false;
     const tpl = STATUS[key] || { flags: { [key]: true } };
     let duration = opts.duration == null ? Infinity : Number(opts.duration);
     let value = opts.value;