Credit limits enforced at the till, and a five-second answer to "how are we doing today?"

Contacts become credit customers by tag. Limits can only be set by a Credit Manager, and that rule is enforced in Python rather than just hidden in the UI. Limit, used, available, due and overdue are shown on every contact.

A "Credit Customer" button with a payment-term picker, a live colour-coded credit chip, and server-side re-validation so a tampered client can't skip the limit check.

Zero-stock ribbons, friendly blocking, a "resolve stock issues" gate, and manager Force Sell (backorder).

Period filters with comparison to the previous period, 6 KPI cards with sparklines, sales vs collections chart, receivables ageing with one-click reminders, payment-mix donut, credit-customer table with WhatsApp and email reminders, stock alerts, "needs your attention today", printable A4 summary, automatic dark mode.

A daily 08:00 reminder run (email + salesperson activity) with 3-day de-duplication.

Direct Meta WhatsApp Cloud API integration, template sync and a send button on invoices. No Odoo proxy, no Enterprise subscription.

Gmail SMTP with automatic retry and a re-queue job for transient failures.

Customer "My Dues", vendor RFQ portal, void approval with OTP.

A generator turned the master Excel into validated imports (650 products, 82 POS categories, 64 product categories, 6 vendors), imported idempotently with zero disruption.