Open Mr. Pokémon's house, the first rival battle and the return to Elm

Mr. Pokémon's ROM scene gives the Mystery Egg and Pokédex, heals the
party, sets the Cherrygrove spawn with blackoutmod and queues Elm's
call. Cherrygrove's rival scene runs both triggers and all three
RIVAL1_1 parties as a CANLOSE battle; reloadmap returns to the script.
Smart AI is accepted for effects with no AI_Smart_EffectHandlers entry
(Normal Hit, Attack Down, Defense Down) and still refuses others before
any random draw, including for reserve Pokémon.

Special calls read SpecialPhoneCallList: the entry's condition decides,
and the ROM's CheckSpecialPhoneCall.script and Script_ReceivePhoneCall
run its caller script through memcall, ending with HangUp's timed
"Click!". Ringing and the caller box are not presented yet.

In Elm's lab, NameRival shows the ROM's "RIVAL'S NAME?" title (the
prompt previously had no page and soft-locked) and applies InitName's
default to blank names. Handing over the Egg and the aide's Poké Balls
run from the ROM. Saves gain rivalName and specialPhoneCall.

The quest fixtures use a seeded RNG (a constant byte never ends the
damage-variation loop) and no longer carry the house's moved objects
into Cherrygrove.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tests/trainer-battle.test.ts

@@ -255,15 +255,37 @@ describe.skipIf(!existsSync(romPath))("trainer battles", () => {
     run.next({ action: "fight", move: 0 });
     expect(internals.playerUsedMoves).toEqual([options.party[0].moves[0], 0, 0, 0]);
   });
-  it("refuses the untranslated Smart AI and empty parties before mutating the party or Pokédex", () => {
-    for (const kind of ["empty", "ai"] as const) {
+  it.each([1, 2, 3])(
+    "completes first rival starter variant %i with its ROM AI flags",
+    (id) => {
+      const { options } = setup(15, [9, id]);
+      expect(options.trainer!.aiFlags).toBe(0x3d3);
+      const result = finish(new Battle(options));
+      expect(result.result).toBe(0);
+      expect(result.prizeMoney).toBe(300);
+      expect(result.texts).toContain("was defeated!");
+    },
+  );
+  it("refuses untranslated Smart effects, including reserves, and empty parties before mutation", () => {
+    for (const kind of ["empty", "ai", "reserve"] as const) {
       const { options } = setup();
       if (kind === "empty") options.trainer!.party = [];
-      else options.trainer!.aiFlags |= 1 << 4;
+      else {
+        options.trainer!.aiFlags |= 1 << 4;
+        const unsupported = structuredClone(options.trainer!.party[0]);
+        unsupported.moves = [115, 0, 0, 0]; // Reflect has an untranslated Smart handler.
+        if (kind === "reserve") options.trainer!.party.push(unsupported);
+        else options.trainer!.party[0] = unsupported;
+      }
       const before = structuredClone(options.party);
+      const enemyBefore = structuredClone(options.trainer!.party);
+      let draws = 0;
+      options.random = () => { draws++; return 0; };
       expect(() => new Battle(options).run().next()).toThrow(UnsupportedBattle);
       expect(options.party).toEqual(before);
+      expect(options.trainer!.party).toEqual(enemyBefore);
       expect(options.pokedex.seen.size).toBe(0);
+      expect(draws).toBe(0);
     }
   });
 });