Xero

Build me a freelancer bookkeeping app covering the personal slice of Xero: invoices, expenses, and quarterly reports. Requirements: - A local web app: Node + Express + better-sqlite3; income and expense entries with date, amount, category, client, and an attached receipt file. - CSV import from my bank's export, plus a rules table (description pattern to category) so repeat transactions auto-categorize. - Invoices numbered sequentially, rendered to PDF with pdfkit, one paid/unpaid flag. Nothing more. - Reports: quarterly income, expenses by category, and a one-page cash P&L I can print for my accountant. - Binds to localhost only, no accounts, no telemetry; write a nightly copy of the SQLite file to a dated backup. - Out of scope: bank feeds, reconciliation, payroll, tax filing, and audit history. Do not build any of them; if I need real accounting, Odoo or Invoice Ninja is the honest route. - README: state that this is a ledger for staying organized between real tools, not accounting. Xero's product is bank feeds, reconciliation, and books an accountant will accept, and no one should sign off these numbers unchecked.