merge: 合并 upstream/main 解决 PR #37 冲突

- 删除 backend/internal/model/account.go 符合重构方向
- 合并最新的项目结构重构
- 包含 SSE 格式解析修复
- 更新依赖和配置文件

backend/internal/service/account_test_service.go

@@ -11,11 +11,11 @@ import (
 	"io"
 	"log"
 	"net/http"
+	"regexp"
 	"strconv"
 	"strings"
 	"time"
 
-	"github.com/Wei-Shaw/sub2api/internal/model"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/claude"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/geminicli"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
@@ -23,6 +23,10 @@ import (
 	"github.com/google/uuid"
 )
 
+// sseDataPrefix matches SSE data lines with optional whitespace after colon.
+// Some upstream APIs return non-standard "data:" without space (should be "data: ").
+var sseDataPrefix = regexp.MustCompile(`^data:\s*`)
+
 const (
 	testClaudeAPIURL   = "https://api.anthropic.com/v1/messages"
 	testOpenAIAPIURL   = "https://api.openai.com/v1/responses"
@@ -141,7 +145,7 @@ func (s *AccountTestService) TestAccountConnection(c *gin.Context, accountID int
 }
 
 // testClaudeAccountConnection tests an Anthropic Claude account's connection
-func (s *AccountTestService) testClaudeAccountConnection(c *gin.Context, account *model.Account, modelID string) error {
+func (s *AccountTestService) testClaudeAccountConnection(c *gin.Context, account *Account, modelID string) error {
 	ctx := c.Request.Context()
 
 	// Determine the model to use
@@ -268,7 +272,7 @@ func (s *AccountTestService) testClaudeAccountConnection(c *gin.Context, account
 }
 
 // testOpenAIAccountConnection tests an OpenAI account's connection
-func (s *AccountTestService) testOpenAIAccountConnection(c *gin.Context, account *model.Account, modelID string) error {
+func (s *AccountTestService) testOpenAIAccountConnection(c *gin.Context, account *Account, modelID string) error {
 	ctx := c.Request.Context()
 
 	// Default to openai.DefaultTestModel for OpenAI testing
@@ -667,11 +671,11 @@ func (s *AccountTestService) processClaudeStream(c *gin.Context, body io.Reader)
 		}
 
 		line = strings.TrimSpace(line)
-		if line == "" || !strings.HasPrefix(line, "data: ") {
+		if line == "" || !sseDataPrefix.MatchString(line) {
 			continue
 		}
 
-		jsonStr := strings.TrimPrefix(line, "data: ")
+		jsonStr := sseDataPrefix.ReplaceAllString(line, "")
 		if jsonStr == "[DONE]" {
 			s.sendEvent(c, TestEvent{Type: "test_complete", Success: true})
 			return nil
@@ -721,11 +725,11 @@ func (s *AccountTestService) processOpenAIStream(c *gin.Context, body io.Reader)
 		}
 
 		line = strings.TrimSpace(line)
-		if line == "" || !strings.HasPrefix(line, "data: ") {
+		if line == "" || !sseDataPrefix.MatchString(line) {
 			continue
 		}
 
-		jsonStr := strings.TrimPrefix(line, "data: ")
+		jsonStr := sseDataPrefix.ReplaceAllString(line, "")
 		if jsonStr == "[DONE]" {
 			s.sendEvent(c, TestEvent{Type: "test_complete", Success: true})
 			return nil