Port evolution, Rare Candy, evolution stones and vitamins

Pokémon that levelled up evolve after a won battle, following
EvolveAfterBattle's checks over the ROM's evolution bytes, with the
evolution screen that B can stop and move learning outside battle. The pack
uses Rare Candy, stones (with ABLE/NOT ABLE labels) and vitamins, and its
pocket tabs now sit in their own row.

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

docs/ARCHITECTURE.md

@@ -62,7 +62,12 @@ menu, pausing overworld ticks while choosing the Bicycle. Start opens
 the party menu and pack change only the draft, which commits when the menu
 closes, and an item that queues a script (the Bicycle) starts it afterwards.
 The start menu, party menu and pocket cursors live in the world's memory,
-not in saves, and are cleared after each battle. The bedroom PC edits
+not in saves, and are cleared after each battle. `scripts/evolution.ts`
+translates `EvolveAfterBattle`, `LearnLevelMoves` and `LearnMove` over a
+draft. After a won battle the world runs it as an interlude on the battle's
+script draft, before the script receives the battle result; the start menu
+runs it inline for Rare Candy and stones. The `evolve` effect is a timed
+picture sequence that B may stop. The bedroom PC edits
 decorations on the script draft and reloads the room when the menu commits.
 `scripts/intro.ts` runs a new game's introduction as a native generator on a
 script draft; the session starts it only when nothing is saved, and the name,