chore: remove Qwen support from SDK and internal components

- Deleted `QwenAuthenticator`, internal `qwen_auth`, and `qwen_executor` implementations.
- Removed all Qwen-related OAuth flows, token handling, and execution logic.
- Cleaned up dependencies and references to Qwen across the codebase.

internal/cmd/auth_manager.go

@@ -6,7 +6,7 @@ import (
 
 // newAuthManager creates a new authentication manager instance with all supported
 // authenticators and a file-based token store. It initializes authenticators for
-// Gemini, Codex, Claude, and Qwen providers.
+// Gemini, Codex, Claude, iFlow, Antigravity, and Kimi providers.
 //
 // Returns:
 //   - *sdkAuth.Manager: A configured authentication manager instance
@@ -16,7 +16,6 @@ func newAuthManager() *sdkAuth.Manager {
 		sdkAuth.NewGeminiAuthenticator(),
 		sdkAuth.NewCodexAuthenticator(),
 		sdkAuth.NewClaudeAuthenticator(),
-		sdkAuth.NewQwenAuthenticator(),
 		sdkAuth.NewIFlowAuthenticator(),
 		sdkAuth.NewAntigravityAuthenticator(),
 		sdkAuth.NewKimiAuthenticator(),

internal/cmd/qwen_login.go

@@ -1,60 +0,0 @@
-package cmd
-
-import (
-	"context"
-	"errors"
-	"fmt"
-
-	"github.com/router-for-me/CLIProxyAPI/v6/internal/config"
-	sdkAuth "github.com/router-for-me/CLIProxyAPI/v6/sdk/auth"
-	log "github.com/sirupsen/logrus"
-)
-
-// DoQwenLogin handles the Qwen device flow using the shared authentication manager.
-// It initiates the device-based authentication process for Qwen services and saves
-// the authentication tokens to the configured auth directory.
-//
-// Parameters:
-//   - cfg: The application configuration
-//   - options: Login options including browser behavior and prompts
-func DoQwenLogin(cfg *config.Config, options *LoginOptions) {
-	if options == nil {
-		options = &LoginOptions{}
-	}
-
-	manager := newAuthManager()
-
-	promptFn := options.Prompt
-	if promptFn == nil {
-		promptFn = func(prompt string) (string, error) {
-			fmt.Println()
-			fmt.Println(prompt)
-			var value string
-			_, err := fmt.Scanln(&value)
-			return value, err
-		}
-	}
-
-	authOpts := &sdkAuth.LoginOptions{
-		NoBrowser:    options.NoBrowser,
-		CallbackPort: options.CallbackPort,
-		Metadata:     map[string]string{},
-		Prompt:       promptFn,
-	}
-
-	_, savedPath, err := manager.Login(context.Background(), "qwen", cfg, authOpts)
-	if err != nil {
-		if emailErr, ok := errors.AsType[*sdkAuth.EmailRequiredError](err); ok {
-			log.Error(emailErr.Error())
-			return
-		}
-		fmt.Printf("Qwen authentication failed: %v\n", err)
-		return
-	}
-
-	if savedPath != "" {
-		fmt.Printf("Authentication saved to %s\n", savedPath)
-	}
-
-	fmt.Println("Qwen authentication successful!")
-}