The "Floating-Point Phantom"

[sengardeep]

Problem

The system is experiencing small but significant floating-point precision errors when handling currency values.
Because money is currently stored as JavaScript floating-point numbers, tiny fractions (e.g., $0.0000000004) are being lost or rounded incorrectly during calculations. Over time, this can lead to disappearing or inconsistent balances.

Points: 20

Steps to Reproduce

1. Perform multiple small transfers or operations that involve decimal values.
2. Inspect the resulting wallet balance in the database.
3. Notice:
   • Tiny fractions of currency disappear or accumulate incorrectly.
   • Balances drift due to floating-point rounding issues.

Expected Behavior

Currency values must be stored and processed with full precision.
To ensure accuracy, the system should:

• Store money as integer cents (e.g., $10.50 → 1050) instead of floats, or
• Use a reliable decimal math library (e.g., decimal.js, big.js), and ensure all wallet operations use it.

The database and model should be refactored so no floating-point numbers are used for currency values.

Submission Guidelines

1. Comment on this issue with your proposed solution approach.
2. Wait for issue assignment from reviewers.
3. Create a PR with clear, descriptive commit messages.
4. Reference this issue in your PR description.