feat(theme-studio): add 18 language previews

Add tokenized code samples for Racket, Scheme, Haskell, OCaml, Scala, Kotlin, Swift, Lua, Ruby, Perl, R, Erlang, SQL, PHP, Ada, Fortran, MATLAB, and Assembly, wired into the language dropdown. Each is an idiomatic snippet tagged by syntax category so the studio renders it in the assignment colors. A guard test checks every added language is registered and renders a non-trivial sample.

1 files changed, 14 insertions, 0 deletions

diff --git a/scripts/theme-studio/test_generate.py b/scripts/theme-studio/test_generate.py
index 6e9676b4a..40956917e 100644
--- a/scripts/theme-studio/test_generate.py
+++ b/scripts/theme-studio/test_generate.py
@@ -177,6 +177,20 @@ class LanguageSamples(unittest.TestCase):
         self.assertIn("@import", text)
         self.assertIn("error.MissingColor", text)
 
+    def test_expanded_language_set_is_registered_and_renders(self):
+        # Every added language is selectable and renders a non-trivial sample that
+        # exercises keywords and carries a comment.
+        added = ["Racket", "Scheme", "Haskell", "OCaml", "Scala", "Kotlin",
+                 "Swift", "Lua", "Ruby", "Perl", "R", "Erlang", "SQL", "PHP",
+                 "Ada", "Fortran", "MATLAB", "Assembly"]
+        for lang in added:
+            self.assertIn(lang, generate.SAMPLES, f"{lang} not in the language selector")
+            tokens = self._tokens(lang)
+            cats = {k for k, _ in tokens}
+            self.assertGreater(len(tokens), 40, f"{lang} sample is too short")
+            self.assertIn("kw", cats, f"{lang} sample has no keywords")
+            self.assertIn("cmd", cats, f"{lang} sample has no comment")
+
 
 class FacesHelper(unittest.TestCase):
     def test_strips_prefix_and_derives_label_and_merges_seed(self):