User Net Worth & Asset Aggregation Service

[Olowodarey]

Users need a high-level view of their financials. We must aggregate data from their Stellar wallet and Nestera savings products to compute their total net worth.

Acceptance Criteria

• Create a GET /users/me/net-worth endpoint.
• Fetch current Stellar balances via StellarService.
• Fetch total locked/flexible savings via SavingsService.
• Combine data and return a JSON payload with breakdowns (e.g., wallet balance versus savings balance).