Fix the anthropic auth url

internal/auth/login.go

@@ -24,7 +24,7 @@ import (
 )
 
 const (
-	authURL        = "https://claude.com/cai/oauth/authorize"
+	authURL        = "https://claude.ai/oauth/authorize"
 	manualRedirect = "https://platform.claude.com/oauth/code/callback"
 )
 
@@ -169,7 +169,7 @@ func Login(ctx context.Context) (*Credential, error) {
 		authCode = code
 		isManual = false
 	case code := <-stdinCh:
-		authCode = code
+		authCode = strings.SplitN(code, "#", 2)[0]
 		isManual = true
 	case <-timeout.C:
 		return nil, fmt.Errorf("login timed out after 120 seconds")

internal/auth/refresh.go

@@ -17,7 +17,7 @@ import (
 )
 
 const (
-	tokenEndpoint = "https://platform.claude.com/v1/oauth/token"
+	tokenEndpoint = "https://api.anthropic.com/v1/oauth/token"
 	clientID      = "9d1c250a-e61b-44d9-88ed-5944d1962f5e"
 	oauthScopes   = "user:profile user:inference user:sessions:claude_code user:mcp_servers user:file_upload"