feat: player runtime for goodluke and SaintlyCorruption

Text fields (`input`) with InputValue classes games can extend, continue/break in screen loops, Confirm,
CaptureFocus/ClearFocus/InvertSelected, generator functions and iter/next, starred tuple items,
renpy.file and json over data files loaded before the game starts, renpy.Container and
register_sl_displayable, DiamondBox layout, ConditionSwitch/DynamicImage/Animation, renpy.show(what=...),
callable transforms (`store.move_in(0.3)`), call_in_new_context as a call, im.matrix/im.Image/
MatrixColor, colorsys, fnmatch, FontGroup, persistent._clear and small renpy helpers.

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

frontend/tests/python-classes.test.mjs

@@ -121,3 +121,12 @@ test("__hash__, __iter__, __getitem__ and __contains__ work on user classes", ()
   assert.equal(store.result_in, true);
   assert.equal(store.result_out, false);
 });
+
+test("generator functions hand out what they yield; iter and next walk a sequence", () => {
+  const { py, store } = runtime();
+  py.exec(ir("dunders"));
+  assert.deepEqual(store.result_found, [1, 2, 3, 4]);
+  assert.equal(store.result_first, 7);
+  assert.equal(store.result_second, 8);
+  assert.equal(store.result_default, "done");
+});