Notes — 2 so far
The hard parts, written out in full, with the code.
- 4 Oct 2026Mero Pasal
Tenant isolation that survives my own mistakes
How Mero Pasal moves multi-tenant isolation out of Django querysets and into PostgreSQL row-level security, so a forgotten filter returns zero rows instead of another shop’s sales.
- 4 Oct 2026Garment Manufacturing ERP
Making every money movement post itself
Why the garment ERP puts a double-entry ledger at the centre instead of bolting accounting on as a report, and the handful of rules that keep its books balanced.