refactor(space): replace hardcoded engine version with constant and improve lookup logic

Replace hardcoded engine version number with constant EngineVersion103 to enhance maintainability
For the latest runtime framework, use the new FindSpaceLatestVersion method instead of hardcoded version lookup

Author: ruibo.qin

component/space.go

@@ -1000,16 +1000,16 @@ func (c *spaceComponentImpl) Deploy(ctx context.Context, namespace, name, curren
 		var err error
 		if (space.Sdk == types.GRADIO.Name && space.SdkVersion != types.GRADIO.Version) ||
 			(space.Sdk == types.STREAMLIT.Name && space.SdkVersion != types.STREAMLIT.Version) {
-			// Using old base image 1.0.3 for old spaces, will be removed in the future
-			frame, err = c.rfs.FindByFrameNameAndDriverVersion(ctx, "space", "1.0.3", space.DriverVersion)
+			slog.InfoContext(ctx, "Using old base image 1.0.3 for old spaces")
+			frame, err = c.rfs.FindByFrameNameAndDriverVersion(ctx, "space", EngineVersion103, space.DriverVersion)
 			if err != nil {
-				return -1, fmt.Errorf("cannot find available (1.0.3) runtime framework, %w", err)
+				return -1, fmt.Errorf("cannot find available (%s) runtime framework, %w", EngineVersion103, err)
 			}
 		} else {
-			// 1.0.4
-			frame, err = c.rfs.FindByFrameNameAndDriverVersion(ctx, "space", "1.0.4", space.DriverVersion)
+			// use latest base space runtime image
+			frame, err = c.rfs.FindSpaceLatestVersion(ctx, "space", space.DriverVersion)
 			if err != nil {
-				return -1, fmt.Errorf("cannot find available (1.0.4) runtime framework, %w", err)
+				return -1, fmt.Errorf("cannot find available latest space runtime framework, %w", err)
 			}
 		}
 

component/space_ce_test.go

@@ -189,8 +189,7 @@ func TestSpaceComponent_Deploy(t *testing.T) {
 	sc.mocks.stores.UserMock().EXPECT().FindByUsername(ctx, "user").Return(database.User{
 		Username: "user1",
 	}, nil)
-	sc.mocks.stores.RuntimeFrameworkMock().EXPECT().FindByFrameNameAndDriverVersion(ctx, mock.Anything, mock.Anything, mock.Anything).Return(nil, nil)
-
+	sc.mocks.stores.RuntimeFrameworkMock().EXPECT().FindSpaceLatestVersion(ctx, mock.Anything, mock.Anything).Return(&database.RuntimeFramework{}, nil)
 	t.Run("Deploy", func(t *testing.T) {
 		sc.mocks.stores.SpaceMock().EXPECT().FindByPath(ctx, "ns1", "n1").Return(&database.Space{
 			ID:         1,