Edit existing products

Adds PATCH /products/:id and an EditProductFlow modal opened from the
product drawer. Editable fields cover name, brand, shop, bin, asset tag,
price, purchase date, size (weight or count + unit weight), and the
cannabinoid profile. SKU, type, kind, and status-derived dates stay
locked because changing them would invalidate audit history math; type
changes are surfaced as "mark gone, add new" in the modal.

The strain row is re-resolved on name or brand change so analytics stay
aligned, and the last-audit mirror (last_audit_weight / count_last_audit)
only syncs with the original size when there are no audits yet.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

web/src/api.ts

@@ -34,6 +34,29 @@ export const api = {
     assetTag?: string;
   }) => request<{ id: string }>("/products", { method: "POST", body: JSON.stringify(body) }),
 
+  updateProduct: (
+    id: string,
+    body: Partial<{
+      name: string;
+      brandId: string | null;
+      shopId: string | null;
+      binId: string | null;
+      assetTag: string | null;
+      weight: number;
+      countOriginal: number;
+      unitWeight: number;
+      price: number;
+      thc: number;
+      cbd: number;
+      totalCannabinoids: number;
+      purchaseDate: string;
+    }>,
+  ) =>
+    request<{ ok: true }>(`/products/${id}`, {
+      method: "PATCH",
+      body: JSON.stringify(body),
+    }),
+
   finishProduct: (id: string, body: { date: string; rating?: number; notes?: string }) =>
     request<{ ok: true }>(`/products/${id}/finish`, {
       method: "POST",