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>

src/game/rom/assets.ts

@@ -4,6 +4,8 @@ import {
   LAST_MAP_GROUP_SIZE,
   MAP_GROUP_COUNT,
   NATIVE_MAPS,
+  NUM_ENGINE_FLAGS,
+  RAM,
   SYMBOLS,
 } from "./profile";
 import { defaultTextContext, readString } from "../scripts/text";
@@ -360,6 +362,18 @@ export class CrystalAssets {
     }
     throw new Error("Wild encounter data is unterminated.");
   }
+  /** Engine flags kept in the four bytes CheckDailyResetTimer clears
+   * (wDailyFlags1 through wUnusedDailyFlag), from the ROM's EngineFlags. */
+  dailyEngineFlags(): number[] {
+    const r = this.reader,
+      flags: number[] = [];
+    for (let index = 0; index < NUM_ENGINE_FLAGS; index++) {
+      const address = r.word(SYMBOLS.engineFlags + index * 3);
+      if (address >= RAM.dailyFlags1 && address <= RAM.unusedDailyFlag)
+        flags.push(index);
+    }
+    return flags;
+  }
   /** Emote bubble graphics (data/sprites/emotes.asm). */
   emote(index: number): Uint8Array {
     const r = this.reader,