feat: 添加 Gitee OAuth 认证支持并更新相关配置、路由和服务。

internal/config/config.go

@@ -46,6 +46,11 @@ type Config struct {
 	GitHubRedirectURL  string
 	FrontendURL        string
 
+	// Gitee OAuth configuration
+	GiteeClientID     string
+	GiteeClientSecret string
+	GiteeRedirectURL  string
+
 	// AI configuration (OpenAI compatible)
 	OpenAIAPIKey     string
 	OpenAIBaseURL    string
@@ -105,6 +110,11 @@ func Load() *Config {
 		GitHubRedirectURL:  getEnv("GITHUB_REDIRECT_URL", ""),
 		FrontendURL:        getEnv("FRONTEND_URL", "http://localhost:2613"),
 
+		// Gitee OAuth
+		GiteeClientID:     getEnv("GITEE_CLIENT_ID", ""),
+		GiteeClientSecret: getEnv("GITEE_CLIENT_SECRET", ""),
+		GiteeRedirectURL:  getEnv("GITEE_REDIRECT_URL", ""),
+
 		// AI (OpenAI compatible)
 		OpenAIAPIKey:     getEnv("OPENAI_API_KEY", ""),
 		OpenAIBaseURL:    getEnv("OPENAI_BASE_URL", ""),