Kasir Grosir: starter Flutter POS (scaffold awal)

docs/menu_notes.md

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+MENU NOTES - Kasir Grosir Starter
+
+Dokumen ini menjelaskan catatan untuk setiap menu yang dibuat sebagai dasar pengembangan lebih lanjut.
+
+1. Dashboard
+- Created: placeholder screen
+- Next tasks:
+  - Implement local aggregation for today's sales using SQLite.
+  - Add simple charts (bar/day) and widget shortcuts.
+  - Add caching strategy and refresh controls.
+
+2. POS
+- Created: placeholder screen
+- Next tasks:
+  - Design local cart model (CartItem: productId, qty, unit, price, discount).
+  - Implement product search (local DB) + barcode scanner integration (ML Kit or barcode_scan2).
+  - Implement checkout flow: cash, partial payment, credit.
+  - Connect printing module (ESC/POS) via plugin (blue_thermal_printer or esc_pos_printer)
+  - Save sale to local DB and generate invoice id (UUID) for reconciliation.
+
+3. Products
+- Created: placeholder screen
+- Next tasks:
+  - Define Product entity (id, sku, barcode, name, price tiers, cost, stock, unit conversion).
+  - Implement CRUD screens + image upload.
+  - Implement CSV import/export for bulk uploads.
+
+4. Customers
+- Created: placeholder screen
+- Next tasks:
+  - Customer entity with price_tier, credit_limit, term_days, contacts.
+  - Implement quick select in POS and customer ledger view.
+
+5. Suppliers
+- Created: placeholder screen
+- Next tasks:
+  - Implement supplier master and contact details.
+  - PO creation & send (PDF export) flow.
+
+6. Purchase Orders
+- Created: placeholder screen
+- Next tasks:
+  - PO entity, receive flow (partial/full), update stock and cost.
+  - Link to supplier and create inbound stock transactions.
+
+7. Accounts Receivable (AR)
+- Created: placeholder screen
+- Next tasks:
+  - Invoice model, payment entries, aging calculation.
+  - UI to record partial payments and generate receipts.
+
+8. Inventory
+- Created: placeholder screen
+- Next tasks:
+  - Stock movements log, multi-warehouse support.
+  - Stock adjustment & opname UI.
+  - Low-stock alerts and reorder suggestions.
+
+9. Reports
+- Created: placeholder screen
+- Next tasks:
+  - Export CSV reports: sales, inventory valuation, AR aging.
+  - Add filters (date range, product, customer).
+
+10. Settings
+- Created: placeholder screen
+- Next tasks:
+  - Store profile, tax settings, printer config screen (pair/select device).
+  - Backup & restore options (CSV export, Google Drive integration).
+
+11. Users
+- Created: placeholder screen
+- Next tasks:
+  - Local auth (PIN) and role based access (admin/kasir/gudang/sales).
+  - User activity log for audit.
+
+12. Utilities
+- Created: placeholder screen
+- Next tasks:
+  - CSV templates for import, bulk label printing, background backup tasks.
+
+General development notes & priorities:
+- Priority MVP: Products CRUD, POS (local cart & checkout cash), basic printing, backup CSV.
+- Use local-first approach: SQLite (drift/sqlite) for now, keep export/import endpoints to ease migration.
+- Keep all TODOs and next tasks tracked in this file; update after each development sprint.
+
+Change history:
+- 2026-01-17: Initial scaffold and menu placeholders created.
+  - Files added: lib/main.dart, lib/screens/*, pubspec.yaml, README.md, docs/menu_notes.md
+
+End of notes.
+