feat(admin-listing): 商品管理列表在租金/押金左侧展示号主纯币价格

- listingDisplay 新增 getListingSellerCoinPrice，读取价格快照 seller_coin_base_price
  （号主收号价中的纯币部分，不含额外消耗品）
- 商品管理表格新增「纯币价格」列并置于「租金/押金」左侧，悬停显示完整说明
- 快照缺失（旧数据/无定价快照）时展示 -，与相邻列风格一致
- PNG 导出列定义同步新增该列，保持导出与页面一致
- 补 listingDisplay 单测：纯币价读取、消耗品单独计价时与号主总价区分、缺快照兜底

frontend/src/shared/utils/__tests__/listingDisplay.spec.ts

@@ -0,0 +1,64 @@
+import { describe, expect, it } from 'vitest'
+
+import { getListingSellerCoinPrice, getListingSellerPrice } from '../listingDisplay'
+import type { PublicListingItem } from '@/features/listings/api/listings'
+
+function buildListing(assetSummary?: Record<string, unknown>): PublicListingItem {
+  return {
+    id: 1,
+    listing_no: 'L1',
+    account_id: 1,
+    owner_id: 1,
+    title: '测试商品',
+    description: '',
+    game_name: 'delta',
+    server_region: 'QQ',
+    login_platform: 'PC',
+    rank_level: '钻石',
+    haf_coin_amount: 100_000_000,
+    asset_summary: assetSummary,
+    screenshot_urls: [],
+    cover_url: '',
+    price_cent: 26320,
+    deposit_amount_cent: 15000,
+    in_transaction: false,
+    status: 'published' as PublicListingItem['status'],
+    review_status: 'approved' as PublicListingItem['review_status'],
+    review_reason: '',
+    created_at: '',
+    updated_at: '',
+  }
+}
+
+describe('号主纯币价格读取', () => {
+  it('从价格快照读取 seller_coin_base_price（不含消耗品）', () => {
+    const listing = buildListing({
+      price_breakdown: {
+        seller_coin_base_price: 232.6,
+        consumable_price: 0,
+        seller_total_price: 232.6,
+      },
+    })
+    expect(getListingSellerCoinPrice(listing)).toBe(232.6)
+  })
+
+  it('消耗品单独计价时纯币价格低于号主总收号价', () => {
+    const listing = buildListing({
+      price_breakdown: {
+        seller_coin_base_price: 200,
+        consumable_price: 32.6,
+        seller_total_price: 232.6,
+      },
+    })
+    expect(getListingSellerCoinPrice(listing)).toBe(200)
+    expect(getListingSellerPrice(listing)).toBe(232.6)
+  })
+
+  it('缺少价格快照时返回 0，供调用方展示占位符', () => {
+    expect(getListingSellerCoinPrice(buildListing())).toBe(0)
+    expect(getListingSellerCoinPrice(buildListing({}))).toBe(0)
+    expect(
+      getListingSellerCoinPrice(buildListing({ price_breakdown: { seller_ratio: 43 } }))
+    ).toBe(0)
+  })
+})

frontend/src/shared/utils/listingDisplay.ts

@@ -77,6 +77,11 @@ export function getListingSellerPrice(item: PublicListingItem) {
   return getListingDisplayPrice(item)
 }
 
+// 号主纯币价格：不含额外消耗品的纯币部分（快照 seller_coin_base_price，单位元）。
+export function getListingSellerCoinPrice(item: PublicListingItem) {
+  return Math.max(0, roundMoney(readPriceBreakdownNumber(item, 'seller_coin_base_price')))
+}
+
 export function getRatioValue(item: PublicListingItem) {
   const ratio = readAssetNumber(item, 'publish_ratio')
   if (ratio > 0) return ratio