Tamashii: accept the itch.io executable name

[Roger13]

Problem

Tamashii.sh tests for one exact filename:

if [ -f "./gamedata/game.exe" ]; then
    ./libs/7zzs x "./gamedata/game.exe" -o"./gamedata/"
fi

game.exe is the Steam build's name. The itch.io release ships tamashii.exe. With the itch.io copy the test never matches, 7zzs never runs, no data.win appears, and the later mv gamedata/data.win gamedata/game.droid is skipped. The script then launches gmloader with no data file:

Trying to load WAD from /userdata/roms/ports/tamashii/gamedata/game.droid.
platform/common/zip_util.c:71: Failed to stat file 'assets/game.droid'.
ports/gmloader/libyoyo.c:496: Unable to open game's WAD file.

The port's own port.json links the itch.io store page, so the itch.io build is an expected source.

Fix

Pick the first *.exe in gamedata instead of hardcoding the name. Steam and itch.io copies both work, and the removal list drops the same file that was extracted.

Notes

• ls ... 2>/dev/null matches the style already used a few lines below for the .ogg check.
• No .exe present: gameexe is empty, [ -f "" ] is false, rm -f "" is a no-op. Same behaviour as before.
• Both game.exe and tamashii.exe present: game.exe wins, as before.
• LF endings, mode 644 unchanged, bash -n clean.

Testing

Reported and reproduced on RG35XX-H (H700) at 640x480 with the itch.io build; the log above is from that device. I could not run the full distribution matrix. The change touches only filename selection, not rendering, input or libraries, so behaviour on other CFWs should be unchanged — the Steam path is byte-identical in effect. Happy to hold for someone with wider hardware access to confirm.