Optional: Rental income distribution prototype (stretch)

[RafaelJohn9]

Prototype a simple distribution that pays mock rental income to token holders proportionally.

Description (deep):
This demonstrates utility beyond speculation: a rental stream distribution shows tokens representing revenue share. Implement a backend process that, given a rental amount, calculates pro rata token-holder shares (based on on-chain balances) and simulates payment distribution (or builds a plan to send stablecoins). This highlights the finance use-case and smart contract automation possibilities.

Acceptance checklist

• Design distribution calculation logic (pro rata)
• Implement backend endpoint /properties/:id/distribute that computes amounts
• Simulate payouts by recording distribution records in DB (no real stablecoin transfer required)
• Add UI to show distribution history and projected yields

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