Add entity customer numbers and scope APIs via selected company.

Entity gets an optional unique-per-company number with allocate/peek/isNumberFree helpers. Company-scoped store methods no longer take companyId and resolve google_auth.selected_company instead.

API.supplier.md

@@ -10,7 +10,7 @@ Creates a new supplier for a company, recording history.
 
 ```js
 const fn = create(pool);
-const supplier = await fn(42, 1, { name: 'Acme Supplies' });
+const supplier = await fn(42, { name: 'Acme Supplies' });
 // => { id, name, createdAt, updatedAt }
 ```
 
@@ -22,7 +22,7 @@ Deletes a supplier by its id within a company.
 
 ```js
 const fn = del(pool);
-await fn(42, 1, 5);
+await fn(42, 5);
 ```
 
 ## `supplier.list`
@@ -33,7 +33,7 @@ Lists the suppliers of a company.
 
 ```js
 const fn = list(pool);
-const suppliers = await fn(42, 1);
+const suppliers = await fn(42);
 // => [{ id, name, createdAt, updatedAt }]
 ```
 
@@ -45,6 +45,6 @@ Updates the name of a supplier, recording history.
 
 ```js
 const fn = update(pool);
-const supplier = await fn(42, 1, 5, { name: 'Acme GmbH' });
+const supplier = await fn(42, 5, { name: 'Acme GmbH' });
 // => { id, name, createdAt, updatedAt }
 ```