export/import actually completely works as expected now

what wasn't working was that a story format wasn't being set because you
need a name and a version.

so now we set a name and a version on export that is explicit. (exported
files would work before if you set the format in the GUI each time, but
that wouldn't solve the problem I'm trying to solve)

Rakefile

@@ -1,6 +1,8 @@
 task default: %w(develop)
 STORY_DIR=File.join(ENV['USERPROFILE'], 'Documents\\Twine\\Stories')
 STORY_TITLE = 'Volleyball'
+STORY_FORMAT = 'SugarCube'
+STORY_FORMAT_VERSION = '2.25.0'
 FILES = {
   '01_intro' => '01 Intro',
   '02_transform' => '02 Transform',
@@ -43,7 +45,8 @@ task export: %w(bundle_install) do
 
       ::Twee2Settings [twee2]
       @story_start_name = 'Start #{file.long_name}'
-      Twee2::build_config.story_format = 'SugarCube2'
+      Twee2::build_config.story_format = 'SugarCube'
+      Twee2::build_config.story_format_version = 'SugarCube2'
 
       ::StoryIncludes
       images.tw2
@@ -52,9 +55,17 @@ task export: %w(bundle_install) do
       #{file.source_file}
     EOF
 
-    sh 'bundle', 'exec', 'twee2', 'export', file.wrapper_file, file.dest_file
+    sh(
+      'bundle', 'exec', 'twee2', 'export',
+      "--format=#{STORY_FORMAT}", "--format-version=#{STORY_FORMAT_VERSION}",
+      file.wrapper_file, file.dest_file,
+    )
   end
-  sh 'bundle', 'exec', 'twee2', 'export', 'main.tw2', STORY_DIR
+  sh(
+    'bundle', 'exec', 'twee2', 'export',
+    "--format=#{STORY_FORMAT}", "--format-version=#{STORY_FORMAT_VERSION}",
+    'main.tw2', STORY_DIR,
+  )
 end
 
 desc 'import sub files from Twine 2'