Add Gold save-editor support, rearrange the launcher, and ship a patch-notes modal.

The save editor now routes Gold vs RBY through a generation adapter so boxes, items, events, and maps write the right fields. The launcher layout is shuffled a bit, and patch notes can come from the updater, a packed file, or the iOS sidecar.

src/ui/gen2/PackMenu.lua

@@ -630,7 +630,7 @@ function PackMenu:openTeachParty(row)
       if not allowed then
         if game.say then
           game:say(("%s can't learn %s!"):format(
-            mon.nickname or mon.species or "?", moveName))
+            require("src.battle.gen2.Mon").displayName(mon), moveName))
         end
         return
       end
@@ -638,7 +638,7 @@ function PackMenu:openTeachParty(row)
         if move.id == moveId then
           if game.say then
             game:say(("%s already knows %s!"):format(
-              mon.nickname or mon.species or "?", moveName))
+              require("src.battle.gen2.Mon").displayName(mon), moveName))
           end
           return
         end