feat: Add support for iFlow provider

internal/cmd/auth_manager.go

@@ -17,6 +17,7 @@ func newAuthManager() *sdkAuth.Manager {
 		sdkAuth.NewCodexAuthenticator(),
 		sdkAuth.NewClaudeAuthenticator(),
 		sdkAuth.NewQwenAuthenticator(),
+		sdkAuth.NewIFlowAuthenticator(),
 	)
 	return manager
 }

internal/cmd/iflow_login.go

@@ -0,0 +1,54 @@
+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"
+)
+
+// DoIFlowLogin performs the iFlow OAuth login via the shared authentication manager.
+func DoIFlowLogin(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,
+		Metadata:  map[string]string{},
+		Prompt:    promptFn,
+	}
+
+	_, savedPath, err := manager.Login(context.Background(), "iflow", cfg, authOpts)
+	if err != nil {
+		var emailErr *sdkAuth.EmailRequiredError
+		if errors.As(err, &emailErr) {
+			log.Error(emailErr.Error())
+			return
+		}
+		fmt.Printf("iFlow authentication failed: %v\n", err)
+		return
+	}
+
+	if savedPath != "" {
+		fmt.Printf("Authentication saved to %s\n", savedPath)
+	}
+
+	fmt.Println("iFlow authentication successful!")
+}