fix(backend): 入库审核库存沿用明细真实快照名 + 库存列表过滤软删商品，修复历史导入占位顶替；入库/出库列表支持 keyword 搜索

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YZ4DskSRKsSiheQonFtQvx

backend/internal/handler/stock_in.go

@@ -49,6 +49,13 @@ func (h *StockInHandler) List(c *gin.Context) {
 	if endDate := c.Query("end_date"); endDate != "" {
 		query = query.Where("order_date <= ?", endDate)
 	}
+	if kw := strings.TrimSpace(c.Query("keyword")); kw != "" {
+		like := "%" + kw + "%"
+		query = query.Where(
+			"order_no LIKE ? OR partner_id IN (SELECT id FROM partners WHERE shop_id = ? AND name LIKE ?)",
+			like, shopID, like,
+		)
+	}
 
 	var total int64
 	query.Count(&total)