Track inventory at the instance level, not by product

The products table conflated catalog ("kind of thing you scan") with
instance ("this jar I bought") — splitting it lets us record every
purchase as its own asset and autofill brand/shop/price/THC from the
last instance when scanning a known SKU.

- products: sku + strain + name + type + kind (catalog only)
- inventory_items: physical jars with short-UUID asset ids, per-batch
  brand/shop/bin/price/cannabinoids/weight, audits, lifecycle
- audits now key on inventory_id; strains lose brand_id and type
- migration: rename existing products/audits/strains to *_legacy on
  first boot so users keep historical reference, fresh start otherwise
- two-step add flow: scan SKU → select/create product → instance
  details (autofilled from last instance) → generated asset id shown
- ScanField matches asset id first, falls back to SKU
- inventory list defaults flat, "By product" toggle groups instances

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

web/src/api.ts

@@ -15,41 +15,26 @@ async function request<T>(path: string, init?: RequestInit): Promise<T> {
 export const api = {
   bootstrap: () => request<Bootstrap>("/bootstrap"),
 
+  // Catalog: products
   createProduct: (body: {
+    sku: string;
     name: string;
-    brandId: string;
-    shopId: string;
-    binId: string;
     type: string;
     kind: "bulk" | "discrete";
-    weight?: number;
-    countOriginal?: number;
-    unitWeight?: number;
-    price: number;
-    thc: number;
-    cbd: number;
-    totalCannabinoids: number;
-    purchaseDate: string;
-    sku?: string;
-    assetTag?: string;
+    strainId?: string | null;
+    strainName?: string;
+    defaultThc?: number;
+    defaultCbd?: number;
+    defaultTotalCannabinoids?: number;
   }) => 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;
+      type: string;
+      kind: "bulk" | "discrete";
+      strainId: string | null;
     }>,
   ) =>
     request<{ ok: true }>(`/products/${id}`, {
@@ -57,27 +42,93 @@ export const api = {
       body: JSON.stringify(body),
     }),
 
-  finishProduct: (id: string, body: { date: string; rating?: number; notes?: string }) =>
-    request<{ ok: true }>(`/products/${id}/finish`, {
+  deleteProduct: (id: string) =>
+    request<{ ok: true }>(`/products/${id}`, { method: "DELETE" }),
+
+  updateStrain: (
+    id: string,
+    body: Partial<{
+      name: string;
+      defaultThc: number | null;
+      defaultCbd: number | null;
+      defaultTotalCannabinoids: number | null;
+      notes: string | null;
+    }>,
+  ) =>
+    request<{ ok: true }>(`/strains/${id}`, {
+      method: "PATCH",
+      body: JSON.stringify(body),
+    }),
+
+  // Inventory items (instances)
+  createInventoryItem: (body: {
+    productId: string;
+    brandId?: string | null;
+    shopId?: string | null;
+    binId?: string | null;
+    price: number;
+    thc?: number;
+    cbd?: number;
+    totalCannabinoids?: number;
+    weight?: number;
+    countOriginal?: number;
+    unitWeight?: number;
+    purchaseDate: string;
+  }) =>
+    request<{ id: string; assetId: string }>("/inventory", {
       method: "POST",
       body: JSON.stringify(body),
     }),
 
-  markGone: (id: string, body: { date: string; reason: string; notes?: string }) =>
-    request<{ ok: true }>(`/products/${id}/gone`, {
+  updateInventoryItem: (
+    id: string,
+    body: Partial<{
+      brandId: string | null;
+      shopId: string | null;
+      binId: string | null;
+      price: number;
+      thc: number;
+      cbd: number;
+      totalCannabinoids: number;
+      weight: number;
+      countOriginal: number;
+      unitWeight: number;
+      purchaseDate: string;
+    }>,
+  ) =>
+    request<{ ok: true }>(`/inventory/${id}`, {
+      method: "PATCH",
+      body: JSON.stringify(body),
+    }),
+
+  finishInventoryItem: (
+    id: string,
+    body: { date: string; rating?: number; notes?: string },
+  ) =>
+    request<{ ok: true }>(`/inventory/${id}/finish`, {
       method: "POST",
       body: JSON.stringify(body),
     }),
 
-  auditProduct: (
+  markInventoryItemGone: (
+    id: string,
+    body: { date: string; reason: string; notes?: string },
+  ) =>
+    request<{ ok: true }>(`/inventory/${id}/gone`, {
+      method: "POST",
+      body: JSON.stringify(body),
+    }),
+
+  auditInventoryItem: (
     id: string,
     body: { date: string; mode: AuditMode; value: number; confirmedBy?: string },
   ) =>
-    request<{ ok: true }>(`/products/${id}/audit`, {
+    request<{ ok: true }>(`/inventory/${id}/audit`, {
       method: "POST",
       body: JSON.stringify(body),
     }),
 
+  // Catalog tables (brand/shop/bin) — unchanged
   createBrand: (name: string) =>
     request<{ id: string; name: string }>("/brands", {
       method: "POST",