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>

docs/PLAN.md

@@ -45,13 +45,24 @@ The emulator-backed prototype is now at `/reference.html`. The default applicati
 - Walkable ledge tops, directional two-tile jumps over 16 ticks, and jump shadows.
 - Exit mats wait for input in their exit direction. Arriving on a mat preserves the actual position; doors, stairs and caves animate the downward exit step.
 - Mid-step saves replay from the source tile, including jumps and map connections, so reload cannot bypass landing scenes or warps.
-- Synthetic movement tests run without a ROM. Local-ROM tests exercise five Route 29 ledge types without enabling that route in production; browser checks cover stairs, opening scenes and an exit-mat save/reload.
+- Synthetic movement tests run without a ROM. Local-ROM tests exercise five Route 29 ledge types; browser checks cover stairs, opening scenes and an exit-mat save/reload.
+
+## Done: Route 29 and Cherrygrove City
+
+- Route 29, its Route 46 gate, Cherrygrove City and its five buildings are enabled. Route 30 and Route 46 remain closed.
+- Item balls run the ROM's `FindItemInBallScript`. Fruit trees run `FruitTreeScript`, with picked trees saved and regrown by a native `CheckDailyResetTimer` that clears the daily engine flags once per game day.
+- The Pokémon Center nurse runs `PokecenterNurseScript`: `HealParty` (with `ComputeMaxPP`'s PP Up clamp), `CheckPokerus` and the phone-call checks. Entering a Center from a town or route records the whiteout spawn, as `EnterMapWarp` does.
+- Standard Poké Marts run `pokemart` natively from `StandardMart`, `BuyMenu` and `SellMenu`: stock from the ROM's `Marts` table, `ItemAttributes` prices, half-price selling and the original texts, with keyboard, D-pad and pointer menus. Special mart types remain refused.
+- `VAR_BOXSPACE` reads an empty box: nothing can be caught or deposited yet.
+- The battle engine gained `recoil` (Struggle). A local stress run of 360 Route 29 battles across all starters and times of day finishes without refusals.
+- Save format 3 gains `fruitTrees`, `dailyReset` and `lastSpawnMap`; older backups migrate by absence.
+- Still refused: the catching tutorial (`catchtutorial`) and Cherrygrove's rival scene, both reachable only after the Mystery Egg errand.
 
 ## In progress: native battles
 
-The battle core, ROM tables, encounter hooks, battle UI and whiteout hooks are present. Unit tests cover wins, escape, loss, experience and move learning; reference tests compare damage and type effectiveness. Browser tests drive a test-only wild encounter through the real UI: victory with level-up and move learning, escape, whiteout, keyboard and on-screen D-pad menu navigation, mid-battle backup restore, and rollback of unsupported effects. Capture, switching, items in battle, Route 29 scripts and the opening quest remain unfinished.
+The battle core, ROM tables, encounter hooks, battle UI and whiteout hooks are present. Unit tests cover wins, escape, loss, experience and move learning; reference tests compare damage and type effectiveness. Browser tests drive a test-only wild encounter through the real UI: victory with level-up and move learning, escape, whiteout, keyboard and on-screen D-pad menu navigation, mid-battle backup restore, and rollback of unsupported effects. Real Route 29 encounters now use the ROM's encounter tables. Capture, switching, items in battle, trainer battles and the rest of the opening quest remain unfinished.
 
-This is still not a complete new game. Playable battles, party/bag/Pokégear menus, story progression beyond the lab, NPC roaming, decorations, animated terrain, surfing, entering routes and audio remain unfinished. Save slots, a Johto/Kanto atlas, Pokédex records, online Link, friends and real-world steps come later.
+This is still not a complete new game. Party/bag/Pokégear menus, story progression beyond Cherrygrove, NPC roaming, decorations, animated terrain, surfing and audio remain unfinished. Save slots, a Johto/Kanto atlas, Pokédex records, online Link, friends and real-world steps come later.
 
 ## 1. Complete the overworld foundation
 
@@ -67,7 +78,7 @@ Introduce native player, party, Pokémon, inventory, money and quest models. Rea
 
 Expand script calls, choices, scene state, inventory commands and native special handlers. Translate routines reached through assembly calls into explicit native services; never fall back to emulator execution in the shipping game.
 
-Meeting Mom, Elm's introduction, the starter and the aide's Potion run now. Next: validate and complete battle integration, Route 29 with wild encounters and the catching tutorial, Cherrygrove and the Mystery Egg round trip; then the introduction's naming and clock screens.
+Meeting Mom, Elm's introduction, the starter, the aide's Potion, Route 29 and Cherrygrove run now. Next: NPC roaming movement, trainer sight lines and trainer battles, Route 30 and Mr. Pokémon, the Mystery Egg round trip with the catching tutorial and the rival battle; then the introduction's naming and clock screens.
 
 Complete and validate the native battle engine: deterministic randomness, stats, move selection, accuracy/critical checks, damage, status, turn order, switching, fainting, experience, capture and rewards. Compare controlled seeds and states with the original, including integer rounding and overflow behavior.