Add balance debugging scripts

[TaprootFreak]

Summary

Add three debugging scripts for analyzing financial data logs:

• compare-balance-logs.sh: Compares two FinancialDataLog entries and shows asset-level changes
• sum-asset-balances.sh: Sums asset balances for a specific financial type
• inspect-asset-balance.sh: Shows detailed balance breakdown (liquidity, custom, pending) for a specific asset

Purpose

These scripts are diagnostic tools for investigating balance calculation issues in the financial logging system. They query the /gs/debug endpoint and parse the complex JSON structures.

Usage

All scripts require DEBUG_ADDRESS and DEBUG_SIGNATURE in .env:

# Compare two logs to find what changed
./scripts/compare-balance-logs.sh 1304695 1304720

# Sum all EUR asset balances from a log
./scripts/sum-asset-balances.sh 1304749 EUR

# Inspect detailed balance structure for Asset 401
./scripts/inspect-asset-balance.sh 1304749 401

Notes

• Scripts authenticate via the API auth endpoint
• Results are parsed with jq for readable output
• Useful for debugging negative balance issues and balance inconsistencies
• Used to diagnose and verify fixes in PR Fix: Prevent negative plus balance from unfiltered Scrypt pending amounts #3330 and Improve fix: Clamp totalPlusPending to prevent negative plus balances #3332