feat: full math module and small renpy helpers

- math: sin/cos/tan/asin/acos/atan/atan2, exp, log, log10, fabs, fmod, modf, trunc,
  hypot, degrees, radians, isnan, isinf, copysign, e
- renpy.curry, get_showing_tags, run(action), pop_call; _preferences.get_mute/get_volume
- The compatibility check knows these names

Removes a few more blockers in TheFixer and That_New_Teacher; the rest are custom
systems of those games (AlphaMask wardrobe, custom statements) and authoring defects.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

backend/app/converter/compatibility.py

@@ -222,7 +222,13 @@ ENGINE_LABELS = {"main_menu_screen", "_main_menu_screen", "main_menu"}
 BLOCKING_BUILTINS = {"renpy.input", "renpy.say", "renpy.pause", "renpy.display_menu", "renpy.with_statement",
                      "renpy.call_screen"}
 CALLS |= BLOCKING_BUILTINS | {"renpy.show", "renpy.hide", "renpy.scene", "Borders", "renpy.set_tag_attributes",
-                                                 "eval", "exec", "Replay", "EndReplay", "renpy.end_replay"}
+                                                 "eval", "exec", "Replay", "EndReplay", "renpy.end_replay",
+                                                 "renpy.get_showing_tags", "renpy.run", "renpy.pop_call",
+                                                 "renpy.curry", "_preferences.get_mute", "_preferences.get_volume",
+                                                 "preferences.get_mute", "preferences.get_volume"}
+CALLS |= {"math." + name for name in (
+    "sin cos tan asin acos atan atan2 exp fabs trunc hypot log log10 fmod modf degrees radians isnan isinf "
+    "copysign").split()}
 
 
 def blocking_names(data) -> list[str]: