feedback5 WE1: enemy attacks strike at their damage frame; a short stun before it cuts the swing (GitHub #187 point 1, #170)

PRTS 状态机: ATTACK / COMBAT "每帧检查异常状态，若有则切换到异常状态的状态"; PRTS 异常效果 STUNNED (the state machine
leaves the attack), DISARMED "正在进行的普通攻击将被中断". The strike frame is data/enemies.json attackAnim.hit.

- ai.js: attackWindup = the clip's strike frame (half the clip when none is named), shortened with the clip like the
  stand; the cooldown counts down to the strike and the swing (enemy.swing) starts when it reaches the wind-up with a
  target in reach (attackTargets, shared with the frame) — steady-state strikes stay one interval apart. An enemy whose
  cooldown ran out before it had a target (walking, just blocked, a cut swing) swings from the start: the whole wind-up.
- A stun / freeze / sleep / 浮空 / hiding, 缴械, 恐惧, 战栗 while blocked or losing every target cuts a swing short of its
  frame: no strike, the next swing starts from its wind-up. A stun in the cooldown only pauses it; a strike already
  made stays made. No clip known (36 of 249 kinds): no wind-up, the old rule. [ASSUMED] targets re-taken at the frame,
  a cut swing does not spend the cooldown, enemy heals keep no wind-up.

Golden: 275 of 283 scenarios moved — roster all 49; bonds 41 of 46 (unchanged: bond-arcaneShip-high,
bond-kjeragShip-low, bond-maniShip-low, bond-skillfulShip-high, bond-swiftShip-low); fields all 22; matches all 18;
standins all 10; diy 135 of 138 (unchanged: diy-027, diy-029, diy-087) — every battle where a clip-carrying enemy meets an
operator: the first strike of a contact waits its wind-up, stuns cut swings (the cut alone moves 55). With every
attackAnim stripped from the data the corpus is byte-identical to the previous commit (nothing else moved). Bot
matches: solo-HARD-2 now wins, coop2-NORMAL-8-serverrun now loses; the other 16 keep their result.

Tests: test/sim/feedback5-enemy-swing.test.js (new, 6). Updated on purpose: feedback2-enemy-attack-stand.test.js (it
locked the instant first strike), enemies_bosses.test.js (沉沙 / 新硎's cleared interval, 帝国的甲胄, 斩胄之剑 / 破胄之锤 wait
for the frame). test/sim, test/content, test/match pass. Docs: SIM.md, DATA.md (attackAnim), ASSETS.md.

docs/SIM.md

@@ -301,7 +301,7 @@ and, unblocked, stand for each attack's clip — `attackStand`: data/enemies.jso
 (cooldown ≤ the strike frame, a target in range) and the rest of the clip after the strike, shortened when the attacks
 come quicker than the clip; `ATTACK_PAUSE` (0.35 s) after the strike when no clip is known; an `attackMoves`
 (「不停止移动」) enemy never stops; a stun ends the stand; only the walking waits — a route WAIT keeps running and
-DISAPPEAR / APPEAR legs still happen, hiding ends the stand; GitHub #58 — then walk on; `fear`/`disarm` stop attacks; `dmgType 'none'` enemies
+DISAPPEAR / APPEAR legs still happen, hiding ends the stand; GitHub #58 — then walk on. Every normal attack strikes at its clip's damage frame (`attackWindup`: `attackAnim.hit`, shortened like the clip; 0 with no clip known — the strike as the swing starts): the cooldown runs down to the frame and the swing (`enemy.swing`) starts when it reaches the wind-up with a target in reach — the whole wind-up from that tick when the cooldown ran out before (it walked ready, its swing was cut); a stun / freeze / sleep / 浮空, hiding, 缴械, 恐惧, 战栗 while blocked or losing every target before the frame cuts the swing — no strike, the next one starts from its wind-up (PRTS 状态机 ATTACK / COMBAT "每帧检查异常状态", 异常效果 STUNNED / DISARMED "正在进行的普通攻击将被中断"; GitHub #187 / #170, 0.2.0) —, a strike already made stays made (its shot lands); the targets are taken at the frame [ASSUMED]; `fear`/`disarm` stop attacks; `dmgType 'none'` enemies
 never attack — unless content arms them through `enemy.profile` (`noAttack: false`, `melee`, `dmgType`, `maxTargets`:
 转译基底·α's 寻仇者 / 特战术师 forms, which then attack like any enemy); `dmgType 'heal'` enemies heal the lowest-HP% enemy in their radius instead. A `noMove` enemy stands (not `moving`, drawn idle). Content can take over an
 enemy's attack: `enemy.profile.deferHit` = the engine makes the attack (target, timing, the `'atk'` event) but deals no