feedback1 integrate: WV a knocked-out operator keeps its tile and redeploys there; 突袭 never lands on it

server/sim/units.js

@@ -43,6 +43,9 @@ export class Unit {
     this.tileC = init.tileC ?? Math.round(this.x);
     this.homeR = this.tileR;
     this.homeC = this.tileC;
+    // knocked-out operators (Battle.isDown): [r, c] of the tile the body lies on and the unit comes back on — where it
+    // fell, or its home (Battle._layBody); x / y / tileR / tileC keep where it fell
+    this.body = null;
     // deploy direction (sim/dir.js; allies: from the board piece, default RIGHT); `facing` is its derived horizontal
     // sign (sprite flip only) — a legacy `init.facing` ±1 still maps to RIGHT / LEFT
     this.dir = normDir(init.dir ?? init.facing);