Open Route 31, Violet City and Sprout Tower (#31)

Enable Route 31 and its gate, Dark Cave's Violet entrance, Violet City with its buildings and Sprout Tower. Port the script commands they use: gettrainername, askforphonenumber (with AddPhoneNumber's room for Mom and Elm; addcellnum now reports failure as the original does), checkpokemail, loadmenu/_2dmenu/closewindow, giveegg and trade (NPCTrade, with wTradeFlags saved).

Eggs keep their species with an egg flag, as wPartySpecies does. The pack's TM/HM counts receive, check and toss TMs and HMs, which are named TM01-HM07.

The playthrough continues through Route 31 (with Mom's call), Violet City and Sprout Tower to Elder Li's Flash.

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

scripts/check-reference.mjs

@@ -86,6 +86,8 @@ const names = {
   pocketIsFullText: "PocketIsFullText",
   findItemInBallScript: "FindItemInBallScript",
   caughtAskNicknameText: "CaughtAskNicknameText",
+  stringEgg: "String_Egg",
+  tmhmMoves: "TMHMMoves",
   nicknameStrings: "NamingScreenJumptable.NicknameStrings",
   rivalNameString: "NamingScreenJumptable.RivalNameString",
   rivalDefaultName: "NameRival.DefaultName",