feedback1 integrate: WQ healers keep healing while they block (tests and docs)

server/sim/Battle.js

@@ -1108,7 +1108,9 @@ export class Battle {
    * or not, whatever its facing ("可以选择且优先选择阻挡单位", PRTS 选择器; ai.js acquireTargets, the skills' DEFAULT
    * trigger). That holds for a ranged operator on a melee tile too: the user's rule after playtest #6, "阻挡了就一定要能
    * 打到" — officially the collision pushes a blocked enemy to its blocker's front, so whatever blocks an enemy can hit
-   * it (DESIGN §20; it replaces the playtest #5 QA's melee-only restriction).
+   * it (DESIGN §20; it replaces the playtest #5 QA's melee-only restriction). Only for attacks that hit enemies: a heal
+   * attack never asks — it keeps selecting injured allies while its unit blocks (PRTS 卫戍协议/帮助 "对于医疗干员
+   * （咒愈师分支除外），攻击目标为需要治疗的单位"; PRTS 选择器 adds only the blocked units its side can pick).
    */
   blockedTargets(u, profile) {
     const out = [];