fix: 统一所有平台使用同一userID，TG和QQ数据互通

internal/qq/qq.go

@@ -3,7 +3,6 @@ package qq
 import (
 	"context"
 	"fmt"
-	"hash/fnv"
 	"log"
 	"strings"
 	"time"
@@ -18,6 +17,9 @@ import (
 	"github.com/tencent-connect/botgo/token"
 )
 
+// DefaultUserID 统一用户ID，使所有平台共享同一份账本
+const DefaultUserID int64 = 1
+
 type QQBot struct {
 	api         openapi.OpenAPI
 	finance     *service.FinanceService
@@ -34,13 +36,6 @@ func NewQQBot(appID string, secret string, finance *service.FinanceService) *QQB
 	}
 }
 
-// hashUserID 将 QQ 的字符串用户标识转为 int64
-func hashUserID(authorID string) int64 {
-	h := fnv.New64a()
-	h.Write([]byte(authorID))
-	return int64(h.Sum64())
-}
-
 func (b *QQBot) Start(ctx context.Context) {
 	// 创建 token source 并启动自动刷新
 	tokenSource := token.NewQQBotTokenSource(b.credentials)
@@ -89,7 +84,6 @@ func isCommand(text string, keywords ...string) bool {
 
 // processAndReply 通用记账处理
 func (b *QQBot) processAndReply(userID string, content string) string {
-	uid := hashUserID(userID)
 	text := strings.TrimSpace(message.ETLInput(content))
 	if text == "" {
 		return ""
@@ -111,7 +105,7 @@ func (b *QQBot) processAndReply(userID string, content string) string {
 			"• 帮助 — 本帮助信息"
 
 	case isCommand(text, "查看", "记录", "列表", "list", "/list", "最近"):
-		items, err := b.finance.GetTransactions(uid, 10)
+		items, err := b.finance.GetTransactions(DefaultUserID, 10)
 		if err != nil {
 			return "❌ 查询失败"
 		}
@@ -126,7 +120,7 @@ func (b *QQBot) processAndReply(userID string, content string) string {
 		return sb.String()
 
 	case isCommand(text, "今日", "今天", "today"):
-		items, err := b.finance.GetTransactionsByDate(uid, today)
+		items, err := b.finance.GetTransactionsByDate(DefaultUserID, today)
 		if err != nil {
 			return "❌ 查询失败"
 		}
@@ -144,7 +138,7 @@ func (b *QQBot) processAndReply(userID string, content string) string {
 		return sb.String()
 	}
 
-	amount, category, err := b.finance.AddTransaction(uid, text)
+	amount, category, err := b.finance.AddTransaction(DefaultUserID, text)
 	if err != nil {
 		log.Printf("QQ记账失败 user=%s: %v", userID, err)
 		return "❌ 记账失败，请稍后重试"