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/engine-behavior.test.mjs

@@ -183,3 +183,13 @@ test("a game's renpy.Displayable subclass renders a tree of pieces through renpy
     assert.deepEqual([tree.pieces[2].x, tree.pieces[2].y], [3, 4]);
   } finally { engine.destroy(); }
 });
+
+test("starred items spread into tuples and lists", () => {
+  const { engine } = makeEngine(runtime());
+  try {
+    engine.newStore();
+    engine.store.rest = [2, 3];
+    const spread = engine.py.eval({ k: "tuple", v: [{ k: "const", v: 1 }, { k: "star", v: { k: "name", id: "rest" } }, { k: "const", v: 4 }] });
+    assert.deepEqual(spread, [1, 2, 3, 4]);
+  } finally { engine.destroy(); }
+});

frontend/tests/fixtures/dunders.ir.json

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frontend/tests/fixtures/dunders.py

@@ -33,3 +33,19 @@ result_loop = [x * 2 for x in bag]
 result_item = bag[1]
 result_in = 4 in bag
 result_out = 9 in bag
+
+
+def walk(values, kind):
+    seen = []
+    for value in values:
+        if isinstance(value, kind):
+            yield value
+        elif isinstance(value, list):
+            yield from walk(value, kind)
+
+
+result_found = list(walk([1, "a", [2, "b", [3]], 4], int))
+result_iter = iter([7, 8])
+result_first = next(result_iter)
+result_second = next(result_iter)
+result_default = next(result_iter, "done")

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");
+});