feedback7: merge fb7-render — #382 赤刃明霄陈 S3 sword-qi drawn (sim chen3Wave fx), #381 enemy attack recovery held in interpolation, #380 push / pull slide (corpse stays where pushed; same-step kills finish the slide), #384 eye masks, 香槟炸弹 HP bar hidden, #246 an unwound attack plays its whole clip

- Conflicts with the merged fb7-hud (both added display-only snapshot lists): server/sim/battle/events.js, types/core.js,
  public/js/render/interp.js, docs/SIM.md, docs/design/network.md — union of ammo / wolves / neg and stand / standCut.
- Grok review: MERGE AFTER FIXES — the HIGH finding (same-step push kill) fixed on the branch (7a33bc7e).
- Golden: diy-073 / diy-074 (fx counts only; union OK); broad node --test 5442 (5441 pass, 0 fail, 1 skipped); lint 0
  errors; typecheck.

server/sim/battle/events.js

@@ -32,6 +32,16 @@ export class BattleEvents {
     return ev;
   }
 
+  /**
+   * Record that an enemy's attack recovery (atkStandUntil) is cut or ignored now — snapshot `standCut`, display metadata
+   * (render/interp.js); never changes the attack's timing or state.
+   */
+  _cutAttackStand(unit) {
+    if (unit.side === 'enemy' && Number.isFinite(unit.atkStandUntil) && unit.atkStandUntil > this.time) {
+      unit.atkStandCutAt = this.time;
+    }
+  }
+
   /**
    * Compact full snapshot of this field (DESIGN §8.2 b.snap), plus (only when non-empty):
    *   down: [[id, respawnAt, respawnTime, state, row, col]] — operators that left the field waiting to redeploy (isDown): the
@@ -40,8 +50,13 @@ export class BattleEvents {
    *   elem: [[id, element, fill, cooldownEnd, cooldown]] — the element gauge each unit shows (damage.js elementView);
    *   ammo: [[id, rounds left, rounds in the magazine]] — a running ammo skill, whole rounds (snapshot.js ammoView): the segmented bar;
    *   wolves: [[id, 狼影 left, the talent's maximum]] — 伺夜's 狼群 (snapshot.js wolfView): the pips under the HP bar;
-   *   neg: [[id, fill]] — the share of its cap a negative-HP pool holds (snapshot.js negView; 斩业星熊's 我执): the red bar.
-   * The last three are display only: no sim state reads them, and the nine-field unit tuples are unchanged.
+   *   neg: [[id, fill]] — the share of its cap a negative-HP pool holds (snapshot.js negView; 斩业星熊's 我执): the red bar;
+   *   stand: [[id, until]] — when each enemy's attack recovery ends (atkStandUntil; alive, deployed, visible, not
+   *         feared or stunned) — display metadata (render/interp.js holds the position until then);
+   *   standCut: [[id, at]] — the latest time each listed enemy's recovery was cut or ignored (_cutAttackStand), the
+   *         dying ones in their death window included.
+   * ammo / wolves / neg / stand / standCut are display only: no sim state reads them, and the nine-field unit tuples are
+   * unchanged.
    */
   snapshot() {
     const snap = {
@@ -64,9 +79,18 @@ export class BattleEvents {
       (down || (down = [])).push([u.id, r2(u.respawnAt), r2(Math.max(0, u.respawnAt - u.deathAt)), this._downState(u), ...this.restTile(u)]);
     }
     if (down) snap.down = down;
-    let elem = null, ammo = null, wolves = null, neg = null;
+    let elem = null, ammo = null, wolves = null, neg = null, stand = null, standCut = null;
+    let listed = null;   // the ids in snap.units, built for the first enemy with a cut to report
     for (const u of this.units) {
+      if (u.side === 'enemy' && u.atkStandCutAt >= 0) {
+        const cutAt = Math.round(u.atkStandCutAt * 1000) / 1000;
+        if (cutAt <= snap.t && (listed || (listed = new Set(snap.units.map((x) => x[0])))).has(u.id)) (standCut || (standCut = [])).push([u.id, cutAt]);
+      }
       if (!u.alive || !u.deployed || u.hidden) continue;
+      const until = Math.round(u.atkStandUntil * 1000) / 1000;
+      if (u.side === 'enemy' && !u.s.flags.fear && !u.s.flags.stun && Number.isFinite(until) && until > snap.t) {
+        (stand || (stand = [])).push([u.id, until]);
+      }
       const v = elementView(u, this.time);
       if (v) (elem || (elem = [])).push([u.id, v[0], v[1], v[2], v[3]]);
       const am = ammoView(u);
@@ -80,6 +104,8 @@ export class BattleEvents {
     if (ammo) snap.ammo = ammo;
     if (wolves) snap.wolves = wolves;
     if (neg) snap.neg = neg;
+    if (stand) snap.stand = stand;
+    if (standCut) snap.standCut = standCut;
     return snap;
   }