feat(inventory): Sites, GST lookup, distance sorting, cart, inventory tracking
Schema:
- Site model (name, code, address, lat/lng, isActive)
- ItemInventory model (quantity per product per site, unique[productId,siteId])
- ItemConsumption model (daily usage per product per site)
- Vendor: add latitude, longitude
- Vessel: add siteId (home port)
- PurchaseOrder: add siteId (delivery site)
Permissions: add manage_sites to MANAGER and ADMIN
Sidebar: Inventory section (Vendors, Items, Vessels, Sites, Cart)
for MANAGER and ADMIN; old admin items reorganised
Lib:
- lib/geo.ts: Haversine distance + Nominatim pincode geocoding
- lib/gst-lookup.ts: AbhiAPI GSTIN lookup (ABHIAPI_KEY env var)
- lib/cart.ts: localStorage cart (add/remove/clear + cart-updated event)
API: GET /api/gst?gstin= — validates GSTIN, fetches via AbhiAPI,
geocodes pincode via Nominatim, returns name/address/lat/lng
Vendor form: GSTIN "Look up" button auto-fills name, address,
and lat/lng; lat/lng fields editable as override
Sites: full CRUD at /admin/sites; detail page with inventory
table, consumption recording form, BarChart (stock) +
LineChart (30-day consumption), linked vessels, recent POs
Vessels: detail page at /admin/vessels/[id] with "Create PO"
button, PO history and spend summary; accessible to MANAGER
Items detail: price comparison BarChart; site distance filter
(dropdown → re-render sorted by Haversine distance); "Add to
Cart" per vendor row; stock-by-site section
Cart: /inventory/cart — localStorage CartView; qty edit, remove,
clear; "Create PO →" encodes cart into /po/new?cart=...
Receipt/delivery: confirmReceipt now upserts ItemInventory
(increment qty) for each linked line item, using PO siteId or
vessel home site as the delivery location
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Hardik
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