feat: wire RDP service into Wails app

Register RDPService on WraithApp with a mock backend factory and expose
it as a Wails service in main.go so the frontend can call RDP methods
via bindings. The factory will be swapped to a FreeRDP purego backend
when running on Windows.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

internal/app/app.go

@@ -12,6 +12,7 @@ import (
 	"github.com/vstockwell/wraith/internal/credentials"
 	"github.com/vstockwell/wraith/internal/db"
 	"github.com/vstockwell/wraith/internal/plugin"
+	"github.com/vstockwell/wraith/internal/rdp"
 	"github.com/vstockwell/wraith/internal/session"
 	"github.com/vstockwell/wraith/internal/settings"
 	"github.com/vstockwell/wraith/internal/sftp"
@@ -32,6 +33,7 @@ type WraithApp struct {
 	Plugins     *plugin.Registry
 	SSH         *ssh.SSHService
 	SFTP        *sftp.SFTPService
+	RDP         *rdp.RDPService
 	Credentials *credentials.CredentialService
 	unlocked    bool
 }
@@ -66,6 +68,12 @@ func New() (*WraithApp, error) {
 	})
 	sftpSvc := sftp.NewSFTPService()
 
+	// RDP service with mock backend factory for development.
+	// In production on Windows, the factory will return a FreeRDP-backed implementation.
+	rdpSvc := rdp.NewRDPService(func() rdp.RDPBackend {
+		return rdp.NewMockBackend()
+	})
+
 	// CredentialService requires the vault to be unlocked, so it starts nil.
 	// It is created lazily after the vault is unlocked via initCredentials().
 
@@ -83,6 +91,7 @@ func New() (*WraithApp, error) {
 		Plugins:     pluginReg,
 		SSH:         sshSvc,
 		SFTP:        sftpSvc,
+		RDP:         rdpSvc,
 	}, nil
 }
 

main.go

@@ -33,6 +33,7 @@ func main() {
 			application.NewService(wraith.Settings),
 			application.NewService(wraith.SSH),
 			application.NewService(wraith.SFTP),
+			application.NewService(wraith.RDP),
 		},
 		Assets: application.AssetOptions{
 			Handler: application.BundledAssetFileServer(assets),