Port the options screen

OPTION in the start menu runs _Option with the ROM's labels and settings,
OptionsControl's cursor wrapping and each option's bit handling. The four
option bytes live in the script state and saves, defaulting to
DefaultOptions. The battle style now decides whether a trainer's next
Pokémon brings an offer to switch, and the menu account whether the start
menu describes its items; the other settings are kept for later.

Closes #24

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

src/game/rom/profile.ts

@@ -749,6 +749,28 @@ export const TRAINER_CARD = {
   PredefPals: 0x9df6,
 } as const;
 
+/** _Option (engine/menus/options_menu.asm): its screen and setting
+ * strings, keyed by their PRET labels. */
+export const OPTIONS = {
+  StringOptions: 0xe4241,
+  "Options_TextSpeed.Fast": 0xe4337,
+  "Options_TextSpeed.Mid": 0xe433c,
+  "Options_TextSpeed.Slow": 0xe4341,
+  "Options_BattleScene.On": 0xe4398,
+  "Options_BattleScene.Off": 0xe439c,
+  "Options_BattleStyle.Shift": 0xe43d1,
+  "Options_BattleStyle.Set": 0xe43d7,
+  "Options_Sound.Mono": 0xe4416,
+  "Options_Sound.Stereo": 0xe441d,
+  "Options_Print.Lightest": 0xe4464,
+  "Options_Print.Lighter": 0xe446d,
+  "Options_Print.Normal": 0xe4476,
+  "Options_Print.Darker": 0xe447f,
+  "Options_Print.Darkest": 0xe4488,
+  "Options_MenuAccount.Off": 0xe44f2,
+  "Options_MenuAccount.On": 0xe44f6,
+} as const;
+
 export const MAP_GROUP_COUNT = 26;
 export const NUM_POKEMON = 251;
 export const NUM_TRAINER_CLASSES = 67;