Playtest #5 fixes: hovering enemies, target order, blocking hand-over, 联防 knocked-out, elements, huge-boss hit area, maps, gear icon, phone HUD, 至简 price

- #1 近地悬浮 enemies count as air units (Unit.isFlying): ground-only attacks, splash, terrain and traps skip them;
  PRTS 不可对空 skill effects made ground-only; 掠海漂移体 / 吉兆飞鳞 drop modes; the bot plans them as air
- #2 an operator knocked out before 联防 is fielded and force-exited (PRTS 强制退场): it lies on its tile with the
  redeploy ring and redeploys (full timer [ASSUMED]); partners, observers and the server fallback included
- #3 element audit of every operator, item and enemy: 海嗣 numbers are official; bursts are 无来源, 元素脆弱 only
  raises 元素伤害, 元素抗性 applied, 盟约·辅助干员 fills all three gauges, 菲莱 / 哈洛德 / 纯烬 / enemy kits fixed
- #4 blocking by the official contact radius (0.7071): another operator in contact takes over at once when the
  blocker dies, withdraws or is stunned; melee blockers attack what they block
- #5 enemy target order per PRTS 索敌: blocker, special priority, taunt, last deployed; initial deploy 从上到下>从左到右,
  operators before summons; special priorities break ties by taunt then deploy order
- #6 act2 m01's normal-field blower machines (row 13) are drawn in the normal / 联防 views
- #7 Final Assault prep legality reads the player's half of the boss field (fence tiles deployable); all 11 stages
  audited against the official level files
- #8 regular settings gear; #9 the prep camera keeps the bench and temp rows clear of the shop bar on phones
- #10 huge bosses have the official 4.95 × 2.95 hit area (sim/body.js) and are 自缚 / unblockable
- #11 至简 costs 1: 购买价格为N's bb.price is a discount off the tier price, applied before other price effects
- DESIGN §19 and the normative §3 / §5 / §6 / §7 lines, SIM / META / DATA / PLAYING updated; 2595 unit tests and
  every browser suite green; dev recordings regenerated

public/js/render/spine.js

@@ -12,6 +12,7 @@
 //   deploy()                              'Start' once, then base
 //   die()                                 die clip once (callers fade out afterwards)
 //   stunned (setBase('stun'))             stun clip, or the current track frozen at timeScale 0
+//   setForm(roles, change)                another clip set of the skeleton (an enemy's mode), after a change clip
 //   update(dt)                            advances the skeleton (autoUpdate is off: one clock for everything)
 // Attack mode lasts until ~1.4 attack intervals without a new attack, then the end clip (if any) and base.
 
@@ -114,6 +115,25 @@ export class SpineActor {
     this.roles = clip ? { ...anims, skill: clip } : anims;
   }
 
+  /**
+   * Another clip set of the same skeleton — an enemy's mode (render/units.js FORMS: 掠海漂移体's 爬行模式 plays its *_02
+   * clips): `roles` override the manifest roles (null = back to them); `change` = a transition clip played once first
+   * (also while stunned: the pose it ends in is the one a stun then holds).
+   */
+  setForm(roles, change = null) {
+    const anims = this.entry?.anims || {};
+    this.roles = roles ? { ...anims, ...roles } : anims;
+    if (this.dead) return;
+    if (change && this.has(change)) {
+      this.stunWanted = this.mode === 'stun';
+      this.frozen = false;
+      this.mode = 'change';
+      this._play(change, false, { mix: 0.08 });
+      this.changeUntil = this.clock + this.dur(change);
+    } else if (this.mode === 'base') this._play(this._baseName(), true);
+    else if (this.mode === 'stun' && this.has(this.roles.stun?.loop)) this._play(this.roles.stun.loop, true);
+  }
+
   has(name) { return !!name && this.names.has(name); }
   dur(name) { const d = this.durations[name]; return typeof d === 'number' && d > 0 ? d : this._durFromData(name); }
 
@@ -159,6 +179,8 @@ export class SpineActor {
   setBase(base) {
     if (this.dead) return;
     const b = base === 'move' || base === 'stun' ? base : 'idle';
+    // a mode change clip plays out first; the resting state it lands in is remembered
+    if (this.mode === 'change') { this.stunWanted = b === 'stun'; if (b !== 'stun') this.base = b; return; }
     if (b === 'stun') { this._enterStun(); return; }
     if (this.mode === 'stun') this._leaveStun();
     if (b === this.base && this.mode !== 'stun') return;
@@ -340,6 +362,12 @@ export class SpineActor {
       case 'deploy':
         if (this.clock >= this.deployUntil) { this.mode = 'base'; this._play(this._baseName(), true); }
         break;
+      case 'change':
+        if (this.clock >= this.changeUntil) {
+          this.mode = 'base';
+          if (this.stunWanted) { this.stunWanted = false; this._enterStun(); } else this._play(this._baseName(), true);
+        }
+        break;
       default: break;
     }
     if (!this.frozen) {