Moved BQL-BALANCE-QUERIES.md from beancounter project to Castle docs/ folder.
Updated all code references from misc-docs/ to docs/ for proper documentation
location alongside implementation.
The document contains comprehensive BQL investigation results showing that
BQL is not feasible for Castle's current ledger format where SATS are stored
in posting metadata rather than position amounts.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Simplifies the representation of journal entry lines by replacing separate debit and credit fields with a single 'amount' field.
Positive amounts represent debits, while negative amounts represent credits, aligning with Beancount's approach. This change improves code readability and simplifies calculations for balancing entries.
