GLYTCH Blue Razz packaging assets

Files:
- poster: full source flavor art with original background/vibe.
- character_cutout_transparent: background removed PNG for box layout.
- supplemental_asset_sheet: alternate pose + 3 crop-friendly props/icons.

Use guidance:
- Prefer matte black / dark base with subtle flavor color fields.
- Use character cutout as the hero. Do not use full poster background as a full wrap unless you intentionally mute it; it will likely get noisy.
- Supplemental sheet is for crop/extract details, side panels, interior panels, flap accents, and spot-UV/foil moments.
- Preserve character identity. Do not redraw into generic anime.
- Send digital proof before sample.
