Open Route 32 to Route 34, the Ruins of Alph and Azalea Town (#32)

Enable Route 32 and its Pokémon Center, the Ruins of Alph with the four
chambers, item and word rooms, inner chamber and research center, Union
Cave, Route 33, Azalea Town with Kurt's house, the kiln and Bugsy's gym,
the Slowpoke Well, Ilex Forest and Route 34.

Port what their scripts need: saved WRAM bytes by label (readmem,
writemem, loadmem: wFarfetchdPosition, wKurtApricornQuantity),
VAR_UNOWNCOUNT and VAR_KURT_APRICORNS, SelectApricornForKurt and
verbosegiveitemvar, Unown letters (GetUnownLetter, per-letter pictures,
CheckUnownLetter's redraw, UpdateUnownDex, wFirstUnownSeen), the chamber
puzzles (_UnownPuzzle), DisplayUnownWords, HoOhChamber and
OmanyteChamber.

Minigames and specials that draw a whole screen in tiles now share a
tile screen effect with ROM graphics, palettes and sprites, answered
with buttons; the standard font and textbox frame load for them.

The playthrough continues through Kurt's Slowpoke Well, Bugsy, the rival
and the Farfetch'd to the Route 34 gate; its helpers move to
tests/playthrough-driver.ts. New tests solve the Kabuto puzzle through
the world, catch Unown and make Kurt's balls.

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

docs/NATIVE_PORT.md

@@ -42,6 +42,9 @@ These paths refer to the pinned [PRET source](https://github.com/pret/pokecrysta
 | `game/scripts/evolution.ts`      | `engine/pokemon/evolve.asm`, `engine/pokemon/learn.asm`, `engine/movie/evolution_animation.asm`, `engine/pokemon/party_menu.asm` | `EvolveAfterBattle`/`EvolvePokemon` over the raw evolution bytes, the evolution texts and a timed, B-stoppable picture sequence, `UpdateSpeciesNameIfNotNicknamed`, `CalcMonStats` and the HP rise, `LearnLevelMoves`, `LearnMove`/`ForgetMove` outside battle and `PlacePartyMonEvoStoneCompatibility`. |
 | `game/rom/pokemon.ts`            | `data/pokemon/base_stats`, `evos_attacks.asm`, `data/moves/moves.asm`, `data/items/attributes.asm`, `engine/gfx/load_pics.asm` | Species, move and item names, base data, evolution lists, learnsets, move PP, item pockets, growth-rate exp and front pictures (`FixPicBank`, `PadFrontpic`). Starter pictures match rebuilt bytes; all 251 evolution lists match the pinned source. |
 | `game/party`                     | `engine/pokemon/move_mon.asm`, `engine/pokemon/caught_data.asm`, `engine/items/items.asm`                                      | `GeneratePartyMonStats` for script gifts: DVs, `FillMoves`, PP, exp, `CalcMonStatC`, happiness and caught data. `PutItemInPocket`, key items and `TossItem`. `SendMonIntoBox`, `SendGetMonIntoFromBox` (deposit and withdraw), `RestorePPOfDepositedPokemon` and `CalcLevel` for the PC's boxes and item storage. TMs and HMs are refused.                                         |
+| `game/scripts/screen.ts`, `game/rendering/tile-screen.ts`, `game/rom/font.ts` | `home/tilemap.asm`, `engine/gfx/load_font.asm` (`_LoadStandardFont`, `LoadFrame`) | Tile screens: a 20x18 tilemap with background palettes and sprites over it, built by a minigame or special from ROM graphics and answered with buttons. Blinking sprites follow bit 4 of the frame counter. Overlay screens (a menu box) leave the map visible around them. The standard font and the option's textbox frame load as 2bpp tiles. |
+| `game/scripts/unown-puzzle.ts`   | `engine/games/unown_puzzle.asm`, `engine/events/specials.asm` (`UnownPuzzle`), `engine/gfx/cgb_layouts.asm` (`_CGB_UnownPuzzle`) | `_UnownPuzzle`: `InitUnownPuzzlePiecePositions` with Random, the d-pad rules, picking up and placing pieces, `CheckSolvedUnownPuzzle`, and the graphics (`ConvertLoadedPuzzlePieces`' doubling, the piece borders, the cursor and START/CANCEL, the OAM layouts) and palettes from the ROM. Sounds are not played. |
+| `game/scripts/ruins.ts`          | `engine/events/unown_walls.asm`, `data/events/unown_walls.asm` | `DisplayUnownWords` as an overlay screen with the chamber tileset's Unown letters, `HoOhChamber` and `OmanyteChamber`. |
 | Text interpreter                 | `macros/scripts/text.asm`, `constants/charmap.asm`, `home/text.asm`                                                            | Literal/far text, RAM names and string buffers from native state, numbers of dots, and sound or pause cues (consumed). `text_asm` and other RAM reads are refused.                                                                      |
 
 Supported event opcodes are explicit in the interpreter switch. Audio commands consume their operands, but sound sequencing is pending; those opcodes do not imply complete audiovisual behavior. `pause` holds the current text or waits the original number of overworld ticks.
@@ -96,6 +99,8 @@ Native production is `dist/`; the optional reference output is `dist-reference/`
 
 Native saves are version 3. Version 2 added scene values by owning map, phone contacts, the weekday offset and DST flag, and positions of objects that scripts moved on the current map. Version 3 adds the player ID, party, bag, Pokédex seen/caught sets and money, and later Mom's savings (`momsMoney`, migrated by absence to 0). Early version-3 backups without money receive the original starting balance; explicitly invalid balances are rejected. Restores recompute each Pokémon's stats from its DVs and reject any mismatch, and check every item against its ROM pocket. Older saves migrate with new-game defaults; a missing player ID is drawn as a new game draws it. Objects are restored from the save on continue, and only the TILES callback runs, as in `MapSetupScript_Continue`.
 
+Later fields keep, by absence-migrated defaults: `memory`, the saved WRAM bytes that scripts read and write directly, by PRET label (`SAVED_WRAM`); and `unownDex` with `firstUnownSeen` (`wUnownDex`, `wFirstUnownSeen`).
+
 ## Scripted trainer battle foundation
 
 `game/rom/trainers.ts` decodes `TrainerGroups`, `TrainerClassAttributes`, `TrainerClassNames`, `TrainerClassDVs` and map trainer headers. Tests cover all 542 ROM records across 67 classes; CAL2 construction refuses its SRAM-dependent Mystery Gift party.