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>

src/game/battle/constants.ts

@@ -256,6 +256,29 @@ export const C = {
   KEY_ITEM_POCKET: 2,
   TM_HM_POCKET: 3,
   PP_UP: 0x3e,
+  RARE_CANDY: 0x20,
+  HP_UP: 0x1a,
+  PROTEIN: 0x1b,
+  IRON: 0x1c,
+  CARBOS: 0x1d,
+  CALCIUM: 0x1f,
+  EVERSTONE: 0x70,
+  PARTYMENUACTION_EVO_STONE: 5,
+  PARTYMENUTEXT_LEVEL_UP: 0xf8,
+  HAPPINESS_USEDITEM: 0x02,
+  // Evolution (constants/pokemon_data_constants.asm)
+  EVOLVE_LEVEL: 1,
+  EVOLVE_ITEM: 2,
+  EVOLVE_TRADE: 3,
+  EVOLVE_HAPPINESS: 4,
+  EVOLVE_STAT: 5,
+  TR_ANYTIME: 1,
+  TR_MORNDAY: 2,
+  TR_NITE: 3,
+  ATK_GT_DEF: 1,
+  ATK_LT_DEF: 2,
+  ATK_EQ_DEF: 3,
+  HAPPINESS_TO_EVOLVE: 220,
   SKETCH: 0xa6,
   PP_UP_MASK: 0xc0,
   PP_UP_ONE: 0x40,