Valestia RPG

Sanctum merchant safety hotfix

• Prevents the empty Sanctum from continually creating replacement merchants.
• Waits for saved chunk entities to load before deciding a shopkeeper is missing.
• Keeps the existing merchant deduplication and shop roles.
• Includes all 1.0.3-beta.2 rift guidance and wildlife balancing.

Validation: all 27 required automated game tests passed. Back up existing worlds before updating. Severely affected saves may need a targeted merchant cleanup; installing this file prevents further empty-hub buildup but does not rewrite unloaded entity files.