fix: update remaining filenames

app.py

@@ -99,7 +99,7 @@ def function_export():
     def make_short_label(fn: str) -> str:
         """
         Generate an initials-based short label from filename.
-        E.g., 'e-r-eddison_the-worm-ouroboros.txt' -> 'ERE-TWO'.
+        E.g., 'e_r_eddison-the_worm_ouroboros.txt' -> 'ERE-TWO'.
         """
         stem = _strip_advanced(fn)
         fields = stem.split("-", 1)
@@ -506,7 +506,7 @@ def data_check(
                 "ℹ️ ファイルが未指定のため、デフォルトサンプルを使用しています。\n"
             )
 
-        defaults_a = ["e-r-eddison_the-worm-ouroboros_advanced.txt"]
+        defaults_a = ["e_r_eddison-the_worm_ouroboros_advanced.txt"]
         df_a = prepare_files(
             category_form.value["files_a"],
             defaults_a,
@@ -518,7 +518,7 @@ def data_check(
             else [category_form.value["label_a"]] * len(df_a)
         )
 
-        defaults_b = ["h-g-wells_the-wonderful-visit_advanced.txt"]
+        defaults_b = ["h_g_wells-the_wonderful_visit_advanced.txt"]
         df_b = prepare_files(
             category_form.value["files_b"],
             defaults_b,