fix: 统一所有平台使用同一userID，TG和QQ数据互通

internal/bot/telegram.go

@@ -12,6 +12,9 @@ import (
 	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
 )
 
+// DefaultUserID 统一用户ID，使所有平台共享同一份账本
+const DefaultUserID int64 = 1
+
 type TGBot struct {
 	api     *tgbotapi.BotAPI
 	finance *service.FinanceService
@@ -53,7 +56,6 @@ func (b *TGBot) Start(ctx context.Context) {
 func (b *TGBot) handleMessage(msg *tgbotapi.Message) {
 	text := msg.Text
 	chatID := msg.Chat.ID
-	userID := msg.From.ID
 
 	var reply string
 
@@ -66,7 +68,7 @@ func (b *TGBot) handleMessage(msg *tgbotapi.Message) {
 
 	case text == "/today":
 		today := time.Now().Format("2006-01-02")
-		items, err := b.finance.GetTransactionsByDate(userID, today)
+		items, err := b.finance.GetTransactionsByDate(DefaultUserID, today)
 		if err != nil {
 			reply = "❌ 查询失败"
 		} else if len(items) == 0 {
@@ -84,7 +86,7 @@ func (b *TGBot) handleMessage(msg *tgbotapi.Message) {
 		}
 
 	case text == "/list":
-		items, err := b.finance.GetTransactions(userID, 10)
+		items, err := b.finance.GetTransactions(DefaultUserID, 10)
 		if err != nil {
 			reply = "❌ 查询失败"
 		} else if len(items) == 0 {
@@ -103,10 +105,10 @@ func (b *TGBot) handleMessage(msg *tgbotapi.Message) {
 
 	default:
 		// 记账逻辑
-		amount, category, err := b.finance.AddTransaction(userID, text)
+		amount, category, err := b.finance.AddTransaction(DefaultUserID, text)
 		if err != nil {
 			reply = "❌ 记账失败，请稍后重试"
-			log.Printf("记账失败 user=%d: %v", userID, err)
+			log.Printf("记账失败: %v", err)
 		} else if amount == 0 {
 			reply = "📍 没看到金额，这笔花了多少钱？"
 		} else {