feedback1e WP: review round 3 — 烛煌 S3 last bolt keeps the burst bonus, splash fx; prep overlay and wheel show the deployed range

- 烛煌 S3: the burn-burst bonus is gated on the attack's own isSkill (captured when the bolt was fired), not on the live
  skill, so the last bullet (it lands after end('ammo')) and bolts in flight when the skill ends early still carry it.
- 烛煌 S3: every landed bolt emits fx 'splash' (r 1.7, burn) at the main target, so the splash shows on screen.
- shared/loadoutRecord.js attackRangeGrid: the range a unit is deployed with — a selected passive range skill
  (引星棘刺 S3 3-9) and the 特性's permanent 攻击距离 (信仰搅拌机 SPT-Y +1; not 空弦 ISW-A's 集成战略-only one) —
  so the board overlay, the deploy wheel and the card agree with the prep live range. extendedGrid moves there
  (re-exported by targeting.js).
- runner.js header: unitStatsEntry carries the ally's live range.

test/render/feedback1e-splash.test.js

@@ -0,0 +1,44 @@
+// test/render/feedback1e-splash.test.js — 烛煌 S3 众恶的焚场 "攻击变为群体攻击" is one target + a 1.7 splash (PRTS 备注
+// "攻击溅射半径1.7"; community report E1 after 0.1.0). The screen rings splash attacks by sub-profession (fx.js
+// SPLASH_SUBS) and 本源术师 is not one, so the kit emits fx 'splash' {x, y, id: main target, src, r: 1.7, element: 'burn'}
+// for every landed bolt (test/sim/feedback1e-skillrange.test.js): drawn as a burn-coloured blast of that radius at the
+// main target. Against the headless fake PIXI (test/render/fakepixi.js), like fxflame.test.js.
+
+import { test, before, after } from 'node:test';
+import assert from 'node:assert/strict';
+import { installFakePixi, fakeViewCtx } from './fakepixi.js';
+import { presetCamera } from '../../public/js/render/projection.js';
+
+let fake, FX;
+before(async () => {
+  fake = installFakePixi();
+  FX = await import('../../public/js/render/fx.js');
+});
+after(() => fake.restore());
+
+const cam = presetCamera('normal', { width: 1600, height: 900 });
+const unit = (id, x, y) => ({ id, x, y, z: 0, hover: 0, _headTiles: 1.2, alive: true, destroyed: false, info: { defId: 'x' }, onHit() {} });
+
+test('烛煌 S3 splash fx: a burn blast of radius 1.7 on the main target (anchored to it), at its spot when it is gone', () => {
+  const blaze = unit(1, 3, 10), foe = unit(20, 7, 10);
+  const map = new Map([[blaze.id, blaze], [foe.id, foe]]);
+  const ctx = fakeViewCtx(fake.P);
+  const fx = new FX.FxSystem({
+    P: fake.P, layers: ctx.layers, cam: () => cam, heightAt: () => 0, settings: { quality: 'high', damageNumbers: true },
+    timeScale: () => 2, loadLevel: () => 0, subProfOf: () => 'primcaster', view: (id) => map.get(id) || null,
+    screenSize: () => ({ width: 1600, height: 900 }), fieldTop: () => 120,
+  });
+  const calls = [];
+  const real = fx.explosion.bind(fx);
+  fx.explosion = (x, y, z, r, col, o) => { calls.push({ x, y, r, col }); return real(x, y, z, r, col, o); };
+  assert.equal(FX.fxSpec('splash', { element: 'burn' }).a, 'blast');
+  fx.simFx('splash', foe.x, foe.y, { x: foe.x, y: foe.y, id: foe.id, src: blaze.id, r: 1.7, element: 'burn' });
+  fx.simFx('splash', 9, 11, { x: 9, y: 11, src: blaze.id, r: 1.7, element: 'burn' }); // the target died meanwhile
+  assert.equal(calls.length, 2);
+  assert.deepEqual(calls.map((c) => [c.x, c.y, c.r]), [[7, 10, 1.7], [9, 11, 1.7]], 'on the target, then on its spot');
+  for (const c of calls) assert.equal(c.col, 0xff7a33, 'burn colour');
+  const n = fx.counts.particles;
+  assert.ok(n > 0, 'fire and sparks');
+  for (let t = 0; t < 2; t += 1 / 120) fx.update(1 / 120);
+  assert.ok(fx.counts.particles < n, 'and they burn out');
+});