Rename a Pokemon at the NAME RATER

[Decryptu]

DisplayPartyMenu and DisplayNameRaterScreen are two decoded nodes whose carry is CANCEL, and what either answers decides the boxes behind it, so both sides ride the request unresolved and are walked once it has come back. NameRatersHouseCheckMonOTScript is read by its own address rather than walked, being a loop, and Gen2NameRater.matches_ot is the one test both generations compare an OT through. GetPartyMonName2 fills wNameBuffer and the keyboard's entry wBuffer, so each box names by its own address.

Gen2NamingScreen.for_gen1_mon is NAME_MON_SCREEN: ten underscores where the player's keyboard has seven, PrintNamingText's species name at hlcoord 4, 1 with NICKNAME? at hlcoord 1, 3, and WriteMonPartySpriteOAM's 2x2 icon at OAM ($10, $10). Gen1Layout.mon_icon_quadrant is the one place the symmetric writer's tile and flip are decided, which the party menu reads too.

Fixed

• _map_script_successors read value off every set_map_script, and Yellow's wNextSafariZoneGateScript stores a byte it read back rather than a constant, so a Yellow import raised a runtime error and left that map's state reachability half built.
• _prompt_icon sliced a tile strip by hand where Gen2PicImage.blit_tile reads it side by side; the naming screen's own icon shares that seam now.

Measurements

	Red	Blue	Yellow
text_asm rows read	317	317	370
rows with an unknown arm	1	1	12, from 16

The one arm left on Red and Blue is unreachable: GateUpstairsScript_PrintIfFacingUp.up, which only a facing the jp nz already refused could take.

tools/checks/gen1_walk.gd renames a member, is answered .ATrulyImpeccableName for another trainer's, and is refused four ways: NO at either question, a list left with B, and an entry left blank. tools/checks/gen1_maps.gd pins the new census. Unit tier 3916/3916, full tier 4534/4534, validate.gd -- all clean on all six cartridges, replay_world.gd 33 routes 0 failures, the three-profile story walk clean, the analyser 0 warnings in 637 scripts.

tools/preview_world.gd -- red 0 229 <out.png> live name_rater@6,3 2 0 photographs the party list and 6 0 the keyboard.