fix(chat): 优化后台限流与 SSE 日志

backend/internal/middleware/auth.go

@@ -52,6 +52,18 @@ func extractToken(c *gin.Context) string {
 	return c.Query("token")
 }
 
+func extractAdminToken(c *gin.Context) (string, string) {
+	if tokenText := extractBearerToken(c); tokenText != "" {
+		return tokenText, "bearer"
+	}
+	if cookieToken, err := c.Cookie(AdminAccessCookieName); err == nil {
+		if tokenText := strings.TrimSpace(cookieToken); tokenText != "" {
+			return tokenText, "cookie"
+		}
+	}
+	return "", "none"
+}
+
 func Auth(jwtManager *auth.JWTManager, validate UserTokenValidatorFunc) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		tokenText := extractToken(c)
@@ -87,16 +99,9 @@ func Auth(jwtManager *auth.JWTManager, validate UserTokenValidatorFunc) gin.Hand
 
 func AdminAuth(jwtManager *auth.JWTManager, validate AdminTokenValidatorFunc) gin.HandlerFunc {
 	return func(c *gin.Context) {
-		tokenText := extractBearerToken(c)
-		tokenSource := "bearer"
+		tokenText, tokenSource := extractAdminToken(c)
 		if tokenText == "" {
-			if cookieToken, err := c.Cookie(AdminAccessCookieName); err == nil {
-				tokenText = strings.TrimSpace(cookieToken)
-				tokenSource = "cookie"
-			}
-		}
-		if tokenText == "" {
-			RecordAdminAuthFailure(c, "missing", "none", 0, 0)
+			RecordAdminAuthFailure(c, "missing", tokenSource, 0, 0)
 			response.Unauthorized(c, "缺少后台访问令牌")
 			c.Abort()
 			return