Open Route 29 and Cherrygrove City

- Enable Route 29, its Route 46 gate, Cherrygrove City and its buildings.
- Run item balls through FindItemInBallScript and fruit trees through
  FruitTreeScript, with a native daily reset of the daily engine flags.
- Port the Pokémon Center nurse (HealParty with the PP Up clamp,
  CheckPokerus, phone-call checks) and record the whiteout spawn on
  entering a Pokémon Center, as EnterMapWarp does.
- Port standard Poké Marts with keyboard, D-pad and pointer menus.
- Add the recoil battle command (Struggle) and VAR_BOXSPACE.
- Save fruit trees, the daily reset day and the last spawn map; older
  version-3 backups migrate by absence.

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

scripts/check-reference.mjs

@@ -75,6 +75,7 @@ const names = {
   giveItemScript: "GiveItemScript",
   putItemInPocketText: "PutItemInPocketText",
   pocketIsFullText: "PocketIsFullText",
+  findItemInBallScript: "FindItemInBallScript",
   caughtAskNicknameText: "CaughtAskNicknameText",
   nicknameStrings: "NamingScreenJumptable.NicknameStrings",
   wildBattleScript: "WildBattleScript",
@@ -83,12 +84,36 @@ const names = {
   johtoGrassWildMons: "JohtoGrassWildMons",
   grassMonProbTable: "GrassMonProbTable",
   grassCollisions: "CheckGrassCollision.blocks",
+  fruitTreeScript: "FruitTreeScript",
+  fruitTreeItems: "FruitTreeItems",
+  engineFlags: "EngineFlags",
+  getCurTreeFruit: "GetCurTreeFruit",
+  tryResetFruitTrees: "TryResetFruitTrees",
+  checkFruitTree: "CheckFruitTree",
+  pickedFruitTree: "PickedFruitTree",
+  marts: "Marts",
+  martWelcomeText: "MartWelcomeText",
+  martAskMoreText: "MartAskMoreText",
+  martComeAgainText: "MartComeAgainText",
+  martHowManyText: "MartHowManyText",
+  martFinalPriceText: "MartFinalPriceText",
+  martNoMoneyText: "MartNoMoneyText",
+  martPackFullText: "MartPackFullText",
+  martThanksText: "MartThanksText",
+  martCantBuyText: "MartCantBuyText",
+  martSellHowManyText: "MartSellHowManyText",
+  martSellPriceText: "MartSellPriceText",
+  martBoughtText: "MartBoughtText",
   fadeOutToWhite: "FadeOutToWhite",
   healParty: "HealParty",
+  healMachineAnim: "HealMachineAnim",
+  checkPokerus: "CheckPokerus",
+  stubbedTrainerRankingsHealings: "StubbedTrainerRankings_Healings",
   warpToSpawnPoint: "WarpToSpawnPoint",
   battleBGMap: "BattleBGMap",
   halveMoney: "HalveMoney",
   getWhiteoutSpawn: "GetWhiteoutSpawn",
+  tryReceiveItem: "FindItemInBallScript.TryReceiveItem",
   giveItemDummy: "GiveItemScript_DummyFunction",
   restartMapMusic: "RestartMapMusic",
   setDayOfWeek: "SetDayOfWeek",
@@ -97,12 +122,15 @@ const names = {
   toggleDecorationsVisibility: "ToggleDecorationsVisibility",
   toggleMaptileDecorations: "ToggleMaptileDecorations",
 };
-// Work RAM symbols are compared by their CPU address, not a ROM offset.
+// Work and hardware RAM symbols are compared by their CPU address, not a
+// ROM offset. Hardware RAM (hMoneyTemp and similar) lives at $FF80-$FFFE.
 const ram = new Map(
   readFileSync(`${root}/pokecrystal11.sym`, "utf8")
     .split("\n")
     .flatMap((line) => {
-      const match = /^0[01]:([c-d][0-9a-f]{3}) (\S+)$/.exec(line);
+      const match = /^0[01]:((?:[c-d][0-9a-f]{3}|ff[0-9a-f]{2})) (\S+)$/.exec(
+        line,
+      );
       return match ? [[match[2], parseInt(match[1], 16)]] : [];
     }),
 );
@@ -119,6 +147,11 @@ const ramNames = {
   enemyMonNickname: "wEnemyMonNickname",
   curPartyLevel: "wCurPartyLevel",
   monOrItemNameBuffer: "wMonOrItemNameBuffer",
+  curFruit: "wCurFruit",
+  dailyFlags1: "wDailyFlags1",
+  unusedDailyFlag: "wUnusedDailyFlag",
+  itemQuantityChange: "wItemQuantityChange",
+  moneyTemp: "hMoneyTemp",
 };
 const profile = readFileSync("src/game/rom/profile.ts", "utf8");
 for (const [key, symbol] of Object.entries(names)) {
@@ -187,6 +220,7 @@ const constantCount = (file, name) => {
 for (const [name, file] of [
   ["NUM_POKEMON", "constants/pokemon_constants.asm"],
   ["NUM_ITEMS", "constants/item_constants.asm"],
+  ["NUM_FRUIT_TREES", "constants/script_constants.asm"],
 ])
   if (!profile.includes(`${name} = ${constantCount(file, name)};`))
     throw new Error(`${name} does not match the reference.`);
@@ -244,6 +278,10 @@ for (const [, block] of battleConstants.matchAll(/export const \w+ = \{([\s\S]*?
       throw new Error(`Battle constant mismatch: ${name} is ${literal}, PRET has ${expected}`);
   }
 }
+if (!profile.includes(`allFruitTrees: ${pretConstants.get("ENGINE_ALL_FRUIT_TREES")},`))
+  throw new Error("ENGINE_ALL_FRUIT_TREES does not match the reference.");
+if (!profile.includes(`NUM_ENGINE_FLAGS = ${pretConstants.get("NUM_ENGINE_FLAGS")};`))
+  throw new Error("NUM_ENGINE_FLAGS does not match the reference.");
 const groups = readFileSync(`${root}/data/maps/maps.asm`, "utf8")
   .split(/^MapGroup_/m)
   .slice(1)