feedback1 integrate: WT 蒂比's 起飞 is 对地规避 - ground enemies no longer select or hit her while airborne

Conflicts resolved keeping both sides:
- buffs.js FLAG_KEYS: liftoff beside the integration's selfBound.
- Battle.js: targeting import union (extendedGrid + evadesGround); _blockerFor keeps the
  fenced-tile gate (WU) and adds liftoff; applyStatus keeps the 无敌 + 无法选中 refusal and
  adds the 对地规避 refusal.
- enemies.js: header DOT entry from WT with the integration's INVISIBLE entry; import union;
  enemy_1273_stmgun_2 keeps the integration's rewrite (it filters through canTargetAlly,
  which now includes liftoff).
- tier2.js 蒂比 comment: the integration's 受到伤害前触发 text plus the 起飞 line.
- tier5.js 隐德来希 血镰: liftoff flag with the integration's foesInRadius.
- SIM.md: blocking keeps the fenced-tile passage and adds air-only blocking while airborne;
  the 污染秽蚀 / 燃烧区域 sentence goes before the chimera aura; statuses keep both refusals.

server/sim/content/kits/tier2.js

@@ -35,17 +35,21 @@ function onDefaultSkill(chess) {
   return !d || !chess?.skill || d.skillId === chess.skill.skillId;
 }
 
-/** 蒂比 take-off (起飞): airborne — blocks flyers only (flags.blockFly of the skill), releases ground enemies. */
+/**
+ * 起飞 of 蒂比's skills (gamedata_const ba.liftoff "不阻挡地面敌人且不会被地面敌人攻击，可以阻挡飞行敌人"): the skill's flags
+ * `liftoff` (no ground enemy blocked — Battle._blockerFor; 对地规避 — targeting.js evadesGround: no ground enemy selects
+ * her, while what selects nobody still lands — 无视无法选择 abilities, direct picks, flying units' blasts, 无来源 damage, the
+ * ticks of a debuff already on her) and `blockFly` (blocks flyers at the air radius). She stays a ground unit on her tile (PRTS 行动方式 "起飞的
+ * 干员仍然是地面单位": `unit.ground` unchanged — 隐德来希's 血镰, 地面干员 bonds / items still count her).
+ */
+const LIFTOFF_FLAGS = Object.freeze({ blockFly: true, liftoff: true });
+/** 蒂比 take-off: the ground enemies she blocked walk on. */
 function tippiTakeOff({ battle, unit }) {
-  unit.mem.tippiGround = unit.ground;
-  unit.ground = false;
   battle.releaseBlocked(unit);
   battle.fx('takeoff', { x: unit.x, y: unit.y, id: unit.id });
 }
-/** 蒂比 landing when the airborne skill ends. */
+/** 蒂比 landing when the airborne skill ends: the flyers she held are released. */
 function tippiLand({ battle, unit }) {
-  if (unit.mem.tippiGround != null) unit.ground = unit.mem.tippiGround;
-  unit.mem.tippiGround = null;
   battle.releaseBlocked(unit);
 }
 
@@ -601,6 +605,8 @@ export default {
   // every damage instance restarts that timer (dodged or not; a 流失 does not — PRTS 备注).
   // S1 专业喷绘技巧 (alt, DEFAULT trigger from data): takes off at once for its duration — skill range, ATK +atk, blocks
   // flyers only; no triple shot, and incoming attacks never set it off.
+  // Both take off as 起飞 (LIFTOFF_FLAGS): she blocks no ground enemy and none selects her (对地规避), so a ground enemy's
+  // selected damage refused on the way never reaches her `hit` and neither sets off S2 nor restarts 片场工作指南.
   chess_char_2_13_a: (bb, chess, def) => {
     const t = talentBb(chess, 0);
     const s2 = onDefaultSkill(chess);
@@ -608,7 +614,7 @@ export default {
       trait: { blockFly: false },
       skill: {
         kind: 'duration', trigger: { rule: 'CUSTOM_RANGE', grid: [] }, // never by the engine: the hit handler below
-        mods: { atkPct: num(bb.atk) }, flags: { blockFly: true },
+        mods: { atkPct: num(bb.atk) }, flags: LIFTOFF_FLAGS,
         targeting: { rangeGrid: def?.skill?.rangeGrid ?? null },
         attack: { hits: 3 },
         onStart: tippiTakeOff,
@@ -616,7 +622,7 @@ export default {
       },
       skills: {
         skchr_tippi_1: {
-          kind: 'duration', mods: { atkPct: num(bb.atk) }, flags: { blockFly: true },
+          kind: 'duration', mods: { atkPct: num(bb.atk) }, flags: LIFTOFF_FLAGS,
           targeting: { rangeGrid: def?.skill?.rangeGrid ?? null },
           onStart: tippiTakeOff,
           onEnd: tippiLand,

server/sim/content/kits/tier5.js

@@ -915,8 +915,8 @@ const KITS = {
               for (const a of unit.mem.sickles || []) {
                 if (!a.alive || !a.deployed) continue;
                 // PRTS 备注 "被添加血镰的单位处于起飞时，血镰可对空": a sickle on the ground spares air units (FLY, 近地悬浮, 浮空);
-                // 起飞 = an airborne skywalker (蒂比's skill: off the ground, flag blockFly)
-                const air = !a.ground && !!a.s.flags.blockFly;
+                // 起飞 = an airborne skywalker (蒂比's skills: flag `liftoff`; still a 地面单位, so she can carry one)
+                const air = !!a.s.flags.liftoff;
                 for (const e of battle.foesInRadius(a.x, a.y, RING1)) {
                   if (e.isFlying && !air) continue;
                   battle.dealDamage(unit, e, { amount: unit.s.atk * num(bb.atk_scale), type: 'phys', isSkill: true, tags: ['skill', 'bloodSickle'] });