Protocol One: The Silent Swallow

Mission ID: P-ONE Difficulty: Level 2 (Debugging) Context: Financial Core / Payment Gateway

The Mission

We are losing money. Customers are reporting failed transactions (items not received), but our system logs show 100% Success Rate.

Your job is to find the "Ghost Bug" in src/payment.js and fix the architectural flaw.

Business Rules

1. Transaction Integrity: If a payment fails for ANY reason (insufficient funds, invalid data, network error), the system MUST throw an error.
2. No False Positives: Never return success: true if the balance was not actually deducted.
3. Transparency: Errors must be surfaced, not hidden.

The Clue

• "Silence is not gold. Silence is a missing stack trace."

Instructions

1. Fork & Clone.
2. npm install
3. npm test (Observe the failure: Expecting Error, but got Success).
4. Fix src/payment.js.
5. Submit PR with Liability Waiver.