feat: 审计差距②③背景/形态三件（T5-T8）——T5 屏底氛围层单点（backdrop_tile 0.14/vignette/beams/地图渐变 #4A3B2A→#3A2E22@40%；start/map/camp 三面旧满铺石纹退役，地图换层 tint 保 0.14 档）+T6 商店全屏页壳（page_shell 56px 通栏顶条+爬价规则行 set_visit_info〔shop_bp_visit_buys×shop_price_a 投喂三口〕+底注池源；bcard D1=232×352+图标槽 76/60）+T7 三选一同壳全屏（GP 汇总行+底部确认钮+免费注记）+T8 设置两列对齐（label 定宽 140/why 内联/返回 90 紧凑；减动效行核证=reduced_motion 单设置同驱 motion_scale+结算演播，demo 两行系同一设置不拆）——冒烟782/0+probe_gate --click全绿

game/presentation/main.gd

@@ -521,9 +521,11 @@ func _on_runner_node(node: Dictionary, info: Dictionary) -> void:
 		_open_modal(shop_overlay)
 		if runner.is_shop_pool():
 			shop_overlay.open_shelf(runner.shop_shelf(), int(runner.gp))
+			shop_overlay.set_visit_info(int(runner.shop_bp_visit_buys()), float(db.shop_price_a()))   # T6 爬价规则行
 			shop_overlay.set_refresh_display(runner.shop_refresh_free_left(), runner.shop_refresh_cost(), int(runner.gp) >= runner.shop_refresh_cost())   # MC-1
 		else:
 			shop_overlay.open_shop(runner.shop_products(), int(runner.gp))
+			shop_overlay.set_visit_info(-1, 1.0)   # legacy 面无爬价行（off 对照承载）
 		log_view.append_bb(Narrator.shop_line(int(runner.gp)))
 	logger.log_node(node, info, runner.node_index)
 	_refresh_presentations()