0.2.6-dev: impostor slots sized from every clip a unit plays and clipped to themselves (GitHub #542 by @ImPQlc: in a crowd 野鬃's idle flag, 浊心斯卡蒂's S3 flight and 隐现's pistol were cut, offset or left stray pixels) — spine.js measures each skeleton's clips once within a 2.5 ms frame budget, units.js impostorBox covers the setup pose and the played clips (a clip past 4× / 2× of that core is drawn directly while it plays, the slot kept), impostor.js draws each slot's skeleton under a scissor rect of the slot; golden: unchanged

public/js/render/app.js

@@ -103,7 +103,8 @@
 // Assault prep = the boss field).
 // Battle device boxes (`ctx.createBox`) follow the board layer (switchableBox), so a 3D ⇄ 2D switch keeps crates.
 // Crowds and clipped Spine skeletons render through the shared impostor atlas (render/impostor.js), flushed once per
-// frame before the main pass.
+// frame before the main pass; each frame also measures queued Spine clips within a small time budget
+// (spine.js stepClipBounds: the impostor boxes, GitHub #542).
 // canPlace: `(uid, target, piece) => bool` (the game UI's form: target = {area:'board',row,col}|{area:'hand',idx})
 // or `(piece, row, col, target) => bool` (functions declaring ≥ 3 parameters). Throwing ⇒ illegal.
 // Piece shape (DESIGN §8.3): { uid, kind: 'chess'|'item'|'token', id, golden, tier, items: [{uid,id}], count, ownerUid }.
@@ -125,6 +126,7 @@ import { backdropTextures, shadowTexture, refreshTierChips, refreshDownLabels, s
 import { TILE_H, TIER_COLORS, COLORS } from './style.js';
 import { loadBoardArt } from './boardArt.js';
 import { ImpostorAtlas } from './impostor.js';
+import { stepClipBounds } from './spine.js';
 import { loadThree, loadBoardPack, loadScenePack, webgl2Available, boardArtListed } from './board3d/load.js';
 import { BoardScene } from './board3d/scene.js';
 import { unionAreas } from './board3d/layout.js';
@@ -1744,6 +1746,7 @@ export async function createFieldView(host, options = {}) {
       if (leader && !leaderHidden) leader.view.update(dt, cam, clock);
       tiles.update(dt);
       fx.update(dt);
+      stepClipBounds();
       impostors.flush();
     } catch (err) {
       if (!frame.warned) { frame.warned = true; console.error('[render] frame failed', err); }