ba.groundbind "目标变为地面单位，无法移动；使部分近地悬浮敌人掉落；对重量大于3的单位持续时间减半" (予愿安洁莉娜 S2 needs it):
- buffs.js: STATUS groundbind (flag groundbind + noMove, move x0), FLAG_KEYS, RESIST_STATUSES (as 束缚, [ASSUMED]);
- units.js isFlying: an enemy under 缚地 is a ground unit unless a 浮空 lifts it (same result as before without the flag);
- battle/status.js: 浮空 lands on a 缚地 data flyer (PRTS 异常效果 "…且不持有缚地异常…则Buff取消"), 缚地 halved on weight > 3;
- content/enemies: 掠海漂移体 / 吉兆飞鳞 drop on 缚地 as their PRTS text says (吉兆飞鳞 stays down while it holds);
- render/style.js: the 束缚 icon for it; docs/SIM.md (§2 isFlying, §3 flags / status table / 抵抗).
Nothing applies it yet: every golden family is unchanged. Test: test/sim/feedback5-groundbind.test.js.
PRTS 天赋: 「攻击力+80%，持有4个【断刃】 / 每次成功攻击后消耗1个【断刃】，攻击结束时若已耗尽【断刃】，则立刻切换为无断刃模式并
失去攻击力加成」 (the switch clears the attack interval: it attacks again at once). The kit stacked one more layer per
attack and never removed any (新硎 1350 → 3510 after two hits). Now one layer of AtkUp.atk 0.8 (新硎) / Atkup.atk 0.7
(沉沙, blackboard over the PRTS page's 80 %) from the spawn, removed by the 4th attack, whose cooldown is cleared; the
death spawn (max(1, unspent blades)) is unchanged.
Golden: roster-011 / -012 / -025 / -048 and bond-soloShip-high (their waves bring 沉沙 or 新硎), coop3-ABYSS-5,
coop2-NORMAL-8-serverrun and coop2-ABYSS-10-boosted (matches whose waves bring them) moved: different ATK over time.
sganggs