Vend online RPG tiles, unique staff sprites, and fix walk facing

[Exios66]

Summary

• Vend high-quality pixel tiles from Jephed’s casino pack, LPC floors, and Kenney outdoor sets under docs/rpg/assets/tiles/, loaded via new EnvironmentTextures.js into the existing TILE keys (maps unchanged).
• Keep the Fry hero sheet; give each of the 7 dealers and 7 staff npc_* keys a unique Jephed character sheet under docs/rpg/assets/characters/staff/.
• Fix hero idle column mapping (up/right were swapped), use the full walk cycle, re-apply anims on facing changes, and face NPCs using npc.direction.

Credits

See docs/rpg/assets/tiles/ATTRIBUTION.md and docs/rpg/assets/characters/ATTRIBUTION.md.

Test plan

• Load /rpg/ overworld — carpet/lobby/VIP/felt read as authored tiles, not flat procedural fills
• Confirm dealers look distinct from each other and from the player
• WASD: walk cycles match held direction; releasing W/A/S/D idles facing the same way
• Talk to a dealer — portrait uses their unique sheet

  

[cursor]

Risk: medium. Not approving: required python and web CI checks are failing and there is no human review yet. No reviewers assigned (only the repo owner is a collaborator).

  

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