feat: random generators, frozenset and __hash__/__iter__/__getitem__/__contains__ in Ren'Py python

renpy.random/random get choices, sample, randrange and Random(seed); frozenset, iter and hash
are builtins. User classes may define __hash__ (dict keys), __iter__, __getitem__ and
__contains__; the converter accepts them instead of rejecting the whole class, which
removes the Perk/Skill/Status wall in SaintlyCorruption.

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

frontend/tests/python-classes.test.mjs

@@ -14,7 +14,7 @@ const ir = (name) => JSON.parse(readFileSync(new URL(`./fixtures/${name}.ir.json
 function runtime() {
   const store = Object.create(null);
   const builtins = {
-    any: (xs) => xs.some(Boolean), range: (n) => Array.from({ length: n }, (_, i) => i), max: Math.max, int: Number, str: pyStr, list: (xs = []) => [...xs],
+    any: (xs) => xs.some(Boolean), len: (x) => (x.map ? x.map.size : x.length), range: (n) => Array.from({ length: n }, (_, i) => i), max: Math.max, int: Number, str: pyStr, list: (xs = []) => [...xs],
   };
   const scope = {
     get: (n) => (n in store ? store[n] : builtins[n]),
@@ -110,3 +110,14 @@ test("lookups stay lenient outside try, uncaught exceptions are explicit errors"
   assert.equal(py.strict, 0);
   void store;
 });
+
+test("__hash__, __iter__, __getitem__ and __contains__ work on user classes", () => {
+  const { py, store } = runtime();
+  py.exec(ir("dunders"));
+  assert.equal(store.result_size, 1);
+  assert.equal(store.result_value, 2);
+  assert.deepEqual(store.result_loop, [6, 8, 10]);
+  assert.equal(store.result_item, 4);
+  assert.equal(store.result_in, true);
+  assert.equal(store.result_out, false);
+});