diff --git a/API.article.md b/API.article.md
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+++ b/API.article.md
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+# article
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `article.addImage`
+
+*Source: `src/store/article/addImage.js`*
+
+Adds an image to an article by its SKU, processing it into AVIF variants.
+
+```js
+const fn = addImage(pool);
+const result = await fn(42, 'SKU-1', imageBuffer);
+// => { picId, sort, full: { w, h, size }, thumb: { w, h }, fullHash, thumbHash }
+```
+
+## `article.createUnderParent`
+
+*Source: `src/store/article/createUnderParent.js`*
+
+Creates a new article under a given parent category, allocating a SKU and a default unit.
+
+```js
+const fn = createUnderParent(pool);
+const article = await fn({ googleAuthId: 42, parentId: 5, name: 'Cola' });
+// => { id, parentId, name, sku }
+```
+
+## `article.delete`
+
+*Source: `src/store/article/delete.js`*
+
+Deletes an article by its SKU, refusing when it still has children.
+
+```js
+const fn = del(pool);
+await fn(42, 'SKU-1');
+```
+
+## `article.deleteImage`
+
+*Source: `src/store/article/deleteImage.js`*
+
+Deletes an image from an article by its SKU and full image hash.
+
+```js
+const fn = deleteImage(pool);
+await fn(42, 'SKU-1', 'abc123');
+```
+
+## `article.getBySku`
+
+*Source: `src/store/article/getBySku.js`*
+
+Returns the full detail of an article by its SKU, including unit, brand, categories, photos, EANs and prices.
+
+```js
+const fn = getBySku(pool);
+const article = await fn(42, 'SKU-1');
+// => { article: { id, sku, name, unit, brand, categoryIds, photos, eans, prices, ... } }
+```
+
+## `article.getHistoryBySku`
+
+*Source: `src/store/article/getHistoryBySku.js`*
+
+Returns the change history of an article by its SKU.
+
+```js
+const fn = getHistoryBySku(pool);
+const history = await fn(42, 'SKU-1');
+// => [{ id, companyuserId, date, text }]
+```
+
+## `article.listExport`
+
+*Source: `src/store/article/listExport.js`*
+
+Returns articles for export, optionally scoped to a category, including category breadcrumbs and image hashes.
+
+```js
+const fn = listExport(pool);
+const articles = await fn(42, 1, null);
+// => [{ id, sku, name, slug, unitSi, net, taxRate, eans, categoryBreadcrumbs, fullHashes, ... }]
+```
+
+## `article.listSearchIndex`
+
+*Source: `src/store/article/listSearchIndex.js`*
+
+Returns a lightweight search index of all articles for a company.
+
+```js
+const fn = listSearchIndex(pool);
+const articles = await fn(42, 1);
+// => [{ id, sku, name, eans, categoryIds }]
+```
+
+## `article.orderImages`
+
+*Source: `src/store/article/orderImages.js`*
+
+Reorders the images of an article by its SKU.
+
+```js
+const fn = orderImages(pool);
+const result = await fn(42, 'SKU-1', { fullHashes: ['a', 'b'] });
+// => { fullHashes: ['a', 'b'] }
+```
+
+## `article.setBrandIdBySku`
+
+*Source: `src/store/article/setBrandIdBySku.js`*
+
+Sets (or clears) the brand of an article by its SKU.
+
+```js
+const fn = setBrandIdBySku(pool);
+const article = await fn(42, 'SKU-1', 3);
+// => { id, sku, name, ... }
+```
+
+## `article.setCategoryIdsBySku`
+
+*Source: `src/store/article/setCategoryIdsBySku.js`*
+
+Replaces the category membership of an article by its SKU.
+
+```js
+const fn = setCategoryIdsBySku(pool);
+const article = await fn(42, 'SKU-1', [5, 9]);
+// => { id, sku, name, ... }
+```
+
+## `article.setEansBySku`
+
+*Source: `src/store/article/setEansBySku.js`*
+
+Replaces the EAN list of an article by its SKU.
+
+```js
+const fn = setEansBySku(pool);
+const article = await fn(42, 'SKU-1', ['4001234567890']);
+// => { id, sku, name, ... }
+```
+
+## `article.setPricesBySku`
+
+*Source: `src/store/article/setPricesBySku.js`*
+
+Replaces the price list of an article by its SKU.
+
+```js
+const fn = setPricesBySku(pool);
+const article = await fn(42, 'SKU-1', [{ price: 1.5, tax: 19, minmultiplier: 1 }]);
+// => { id, sku, name, ... }
+```
+
+## `article.setWeightBySku`
+
+*Source: `src/store/article/setWeightBySku.js`*
+
+Sets the weight of an article by its SKU.
+
+```js
+const fn = setWeightBySku(pool);
+const article = await fn(42, 'SKU-1', 1.5);
+// => { id, sku, name, ... }
+```
+
+## `article.updateBySku`
+
+*Source: `src/store/article/updateBySku.js`*
+
+Updates an article's name and/or unit (SI and amount), recording history.
+
+```js
+const fn = updateBySku(pool);
+const article = await fn(42, 'SKU-1', { name: 'Cola 1L', unitSi: 'l', unitamount: 1 });
+// => { id, sku, name, ... }
+```
diff --git a/API.brand.md b/API.brand.md
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+# brand
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `brand.delete`
+
+*Source: `src/store/brand/delete.js`*
+
+Deletes a brand for a company by its id.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 3);
+```
+
+## `brand.list`
+
+*Source: `src/store/brand/list.js`*
+
+Lists the brands of a company.
+
+```js
+const fn = list(pool);
+const brands = await fn(42, 1);
+// => [{ id, name, gsprpinfo }]
+```
+
+## `brand.upsert`
+
+*Source: `src/store/brand/upsert.js`*
+
+Creates or updates a brand for a company, keyed by name.
+
+```js
+const fn = upsert(pool);
+const brand = await fn(42, 1, { name: 'Coca-Cola', gsprpinfo: 'x' });
+// => { id, name, gsprpinfo }
+```
diff --git a/API.category.md b/API.category.md
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+++ b/API.category.md
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+# category
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `category.addImage`
+
+*Source: `src/store/category/addImage.js`*
+
+Adds an image to a category, processing it into AVIF full and thumb variants.
+
+```js
+const fn = addImage(pool);
+const result = await fn(42, 5, imageBuffer);
+// => { id, fullHash, thumbW, thumbH, thumbHash }
+```
+
+## `category.createUnderParent`
+
+*Source: `src/store/category/createUnderParent.js`*
+
+Creates a new category under a given parent category.
+
+```js
+const fn = createUnderParent(pool);
+const category = await fn({ googleAuthId: 42, parentId: 5, name: 'Drinks' });
+// => { id, parentId, sort, name, slug }
+```
+
+## `category.delete`
+
+*Source: `src/store/category/delete.js`*
+
+Deletes a category, refusing to delete the company's root category.
+
+```js
+const fn = del(pool);
+await fn({ googleAuthId: 42, id: 5 });
+```
+
+## `category.deleteImage`
+
+*Source: `src/store/category/deleteImage.js`*
+
+Deletes the image of a category.
+
+```js
+const fn = deleteImage(pool);
+const result = await fn(42, 5);
+// => { id, thumbW: null, thumbH: null, thumbHash: null }
+```
+
+## `category.getCategoryArticles`
+
+*Source: `src/store/category/getCategoryArticles.js`*
+
+Returns the articles belonging to a single category.
+
+```js
+const fn = getCategoryArticles(pool);
+const articles = await fn(42, 5);
+// => [{ id, sku, name, ... }]
+```
+
+## `category.getTreeForCompany`
+
+*Source: `src/store/category/getTreeForCompany.js`*
+
+Returns the full category tree for a company together with its articles and the posterminal ids assigned to each category.
+
+```js
+const fn = getTreeForCompany(pool);
+const tree = await fn(42, 1);
+// => { languageId, tree: [{ id, posterminalIds, ... }], articles: [...] }
+```
+
+## `category.move`
+
+*Source: `src/store/category/move.js`*
+
+Moves a category to a new parent, preventing cycles and cross-company moves.
+
+```js
+const fn = move(pool);
+const result = await fn({ googleAuthId: 42, id: 5, parentId: 9 });
+// => { id, parentId, sort }
+```
+
+## `category.order`
+
+*Source: `src/store/category/order.js`*
+
+Reorders the child categories of a given parent.
+
+```js
+const fn = order(pool);
+const result = await fn({ googleAuthId: 42, parentId: 5, categoryIds: [3, 1, 2] });
+// => { categoryIds: [3, 1, 2] }
+```
+
+## `category.rename`
+
+*Source: `src/store/category/rename.js`*
+
+Renames a category and updates its slug.
+
+```js
+const fn = rename(pool);
+const result = await fn({ googleAuthId: 42, id: 5, name: 'Soft Drinks' });
+// => { id, name, slug }
+```
diff --git a/API.company.md b/API.company.md
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+++ b/API.company.md
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+# company
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `company.create`
+
+*Source: `src/store/company/create.js`*
+
+Creates a new company together with its root category, POS customer group, default language and tax rates, and links it to the given Google auth user.
+
+```js
+const fn = create(pool);
+const company = await fn({
+  iso639: 'de',
+  name: 'Acme',
+  taxrate: 19,
+  reducedtaxrate: 7,
+  googleAuthId: 42,
+});
+// => { id, rootCategoryId, languageId, taxrateId, reducedtaxrateId, taxfreerateId, posCustomerGroupId }
+```
+
+## `company.delete`
+
+*Source: `src/store/company/delete.js`*
+
+Deletes a company by its id.
+
+```js
+const fn = del(pool);
+await fn(1);
+```
+
+## `company.getById`
+
+*Source: `src/store/company/getById.js`*
+
+Returns a single company by its id.
+
+```js
+const fn = getById(pool);
+const company = await fn(1);
+// => { id, name, ... }
+```
+
+## `company.getByName`
+
+*Source: `src/store/company/getByName.js`*
+
+Returns a single company by its name.
+
+```js
+const fn = getByName(pool);
+const company = await fn('Acme');
+// => { id, name, ... }
+```
+
+## `company.list`
+
+*Source: `src/store/company/list.js`*
+
+Lists the companies accessible to the given Google auth user.
+
+```js
+const fn = list(pool);
+const companies = await fn(42);
+// => [{ id, name, ... }]
+```
+
+## `company.update`
+
+*Source: `src/store/company/update.js`*
+
+Updates an existing company's name, language and tax rates.
+
+```js
+const fn = update(pool);
+const result = await fn(1, { iso639: 'de', name: 'Acme', taxrate: 19, reducedtaxrate: 7 });
+// => { id, rootCategoryId, languageId, taxrateId, reducedtaxrateId, taxfreerateId }
+```
diff --git a/API.companysetting.md b/API.companysetting.md
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+++ b/API.companysetting.md
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+# companysetting
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `companysetting.delete`
+
+*Source: `src/store/companysetting/delete.js`*
+
+Deletes a company setting by key.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 'theme');
+```
+
+## `companysetting.get`
+
+*Source: `src/store/companysetting/get.js`*
+
+Returns a single company setting by key.
+
+```js
+const fn = get(pool);
+const setting = await fn(42, 1, 'theme');
+// => { key, value, frontend }
+```
+
+## `companysetting.list`
+
+*Source: `src/store/companysetting/list.js`*
+
+Lists the settings of a company, optionally only frontend-visible ones.
+
+```js
+const fn = list(pool);
+const settings = await fn(42, 1, { frontendOnly: true });
+// => [{ key, value, frontend }]
+```
+
+## `companysetting.set`
+
+*Source: `src/store/companysetting/set.js`*
+
+Sets (upserts) a company setting by key.
+
+```js
+const fn = set(pool);
+const setting = await fn(42, 1, { key: 'theme', value: 'dark', frontend: true });
+// => { key, value, frontend }
+```
diff --git a/API.companyuser.md b/API.companyuser.md
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+++ b/API.companyuser.md
@@ -0,0 +1,38 @@
+# companyuser
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `companyuser.add`
+
+*Source: `src/store/companyuser/add.js`*
+
+Adds a company user linking a company to a Google auth account.
+
+```js
+const fn = add(pool);
+const id = await fn(1, 42);
+// => 7
+```
+
+## `companyuser.delete`
+
+*Source: `src/store/companyuser/delete.js`*
+
+Deletes a company user link by its id.
+
+```js
+const fn = del(pool);
+await fn(7);
+```
+
+## `companyuser.getByEmail`
+
+*Source: `src/store/companyuser/getByEmail.js`*
+
+Returns the company user ids associated with the given email address.
+
+```js
+const fn = getByEmail(pool);
+const ids = await fn('user@example.com');
+// => [1, 2, 3]
+```
diff --git a/API.customergroup.md b/API.customergroup.md
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+++ b/API.customergroup.md
@@ -0,0 +1,62 @@
+# customergroup
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `customergroup.create`
+
+*Source: `src/store/customergroup/create.js`*
+
+Creates a new customer group for a company.
+
+```js
+const fn = create(pool);
+const group = await fn(42, 1, { name: 'Wholesale' });
+// => { id, name, sort }
+```
+
+## `customergroup.delete`
+
+*Source: `src/store/customergroup/delete.js`*
+
+Deletes a customer group for a company by its id.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 5);
+```
+
+## `customergroup.list`
+
+*Source: `src/store/customergroup/list.js`*
+
+Lists the customer groups of a company.
+
+```js
+const fn = list(pool);
+const groups = await fn(42, 1);
+// => [{ id, name, sort }]
+```
+
+## `customergroup.order`
+
+*Source: `src/store/customergroup/order.js`*
+
+Reorders the customer groups of a company.
+
+```js
+const fn = order(pool);
+const result = await fn(42, 1, { customergroupIds: [3, 1, 2] });
+// => { customergroupIds: [3, 1, 2] }
+```
+
+## `customergroup.update`
+
+*Source: `src/store/customergroup/update.js`*
+
+Updates the name of a customer group for a company.
+
+```js
+const fn = update(pool);
+const group = await fn(42, 1, 5, { name: 'Retail' });
+// => { id, name, sort }
+```
diff --git a/API.delivery.md b/API.delivery.md
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--- /dev/null
+++ b/API.delivery.md
@@ -0,0 +1,62 @@
+# delivery
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `delivery.create`
+
+*Source: `src/store/delivery/create.js`*
+
+Creates a new delivery for a company with its lines.
+
+```js
+const fn = create(pool);
+const delivery = await fn(42, 1, { number: 'D-1', date: '2026-01-01', supplierId: 5, lines: [...] });
+// => { id, number, type, entityId, date, lines: [...] }
+```
+
+## `delivery.delete`
+
+*Source: `src/store/delivery/delete.js`*
+
+Deletes a delivery by its id within a company.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 5);
+```
+
+## `delivery.getById`
+
+*Source: `src/store/delivery/getById.js`*
+
+Returns a single delivery by its id within a company.
+
+```js
+const fn = getById(pool);
+const delivery = await fn(42, 1, 5);
+// => { id, number, type, entityId, date, lines: [...] }
+```
+
+## `delivery.list`
+
+*Source: `src/store/delivery/list.js`*
+
+Lists the deliveries of a company.
+
+```js
+const fn = list(pool);
+const deliveries = await fn(42, 1);
+// => [{ id, number, type, entityId, date }]
+```
+
+## `delivery.update`
+
+*Source: `src/store/delivery/update.js`*
+
+Updates a delivery's header and/or lines.
+
+```js
+const fn = update(pool);
+const delivery = await fn(42, 1, 5, { number: 'D-2', lines: [...] });
+// => { id, number, type, entityId, date, lines: [...] }
+```
diff --git a/API.entity.md b/API.entity.md
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--- /dev/null
+++ b/API.entity.md
@@ -0,0 +1,62 @@
+# entity
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `entity.create`
+
+*Source: `src/store/entity/create.js`*
+
+Creates a new entity (customer) in a customer group, recording history.
+
+```js
+const fn = create(pool);
+const entity = await fn(42, 1, { customergroupId: 5, name: 'Doe', firstName: 'John' });
+// => { id, customergroupId, firstName, name, createdAt, updatedAt }
+```
+
+## `entity.delete`
+
+*Source: `src/store/entity/delete.js`*
+
+Deletes an entity by its id within a company.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 5);
+```
+
+## `entity.getById`
+
+*Source: `src/store/entity/getById.js`*
+
+Returns a single entity by its id within a company.
+
+```js
+const fn = getById(pool);
+const entity = await fn(42, 1, 5);
+// => { id, customergroupId, firstName, name, createdAt, updatedAt }
+```
+
+## `entity.list`
+
+*Source: `src/store/entity/list.js`*
+
+Lists the entities (customers) of a company, optionally filtered by customer group or restricted to the 'customer' role.
+
+```js
+const fn = list(pool);
+const entities = await fn(42, 1, { customergroupId: 5 });
+// => [{ id, customergroupId, firstName, name, createdAt, updatedAt }]
+```
+
+## `entity.update`
+
+*Source: `src/store/entity/update.js`*
+
+Updates the name and/or first name of an entity, recording history.
+
+```js
+const fn = update(pool);
+const entity = await fn(42, 1, 5, { name: 'Doe', firstName: 'Jane' });
+// => { id, customergroupId, firstName, name, createdAt, updatedAt }
+```
diff --git a/API.entityaddress.md b/API.entityaddress.md
new file mode 100644
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--- /dev/null
+++ b/API.entityaddress.md
@@ -0,0 +1,50 @@
+# entityaddress
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `entityaddress.create`
+
+*Source: `src/store/entityaddress/create.js`*
+
+Creates a new address for an entity.
+
+```js
+const fn = create(pool);
+const address = await fn(42, 1, 5, { addressType: 'billing', street: 'Main St', city: 'Berlin' });
+// => { id, entityId, firstName, name, street, streetNumber, zip, city, county, addressType, sort }
+```
+
+## `entityaddress.delete`
+
+*Source: `src/store/entityaddress/delete.js`*
+
+Deletes an address of an entity.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 5, 9);
+```
+
+## `entityaddress.list`
+
+*Source: `src/store/entityaddress/list.js`*
+
+Lists the addresses of an entity.
+
+```js
+const fn = list(pool);
+const addresses = await fn(42, 1, 5);
+// => [{ id, entityId, firstName, name, street, streetNumber, zip, city, county, addressType, sort }]
+```
+
+## `entityaddress.update`
+
+*Source: `src/store/entityaddress/update.js`*
+
+Updates an address of an entity.
+
+```js
+const fn = update(pool);
+const address = await fn(42, 1, 5, 9, { city: 'Hamburg' });
+// => { id, entityId, firstName, name, street, streetNumber, zip, city, county, addressType, sort }
+```
diff --git a/API.entitycontact.md b/API.entitycontact.md
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--- /dev/null
+++ b/API.entitycontact.md
@@ -0,0 +1,50 @@
+# entitycontact
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `entitycontact.create`
+
+*Source: `src/store/entitycontact/create.js`*
+
+Creates a new contact for an entity.
+
+```js
+const fn = create(pool);
+const contact = await fn(42, 1, 5, { contactType: 'email', contact: 'a@b.c' });
+// => { id, entityId, contactType, contact, sort }
+```
+
+## `entitycontact.delete`
+
+*Source: `src/store/entitycontact/delete.js`*
+
+Deletes a contact of an entity.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 5, 9);
+```
+
+## `entitycontact.list`
+
+*Source: `src/store/entitycontact/list.js`*
+
+Lists the contacts of an entity.
+
+```js
+const fn = list(pool);
+const contacts = await fn(42, 1, 5);
+// => [{ id, entityId, contactType, contact, sort }]
+```
+
+## `entitycontact.update`
+
+*Source: `src/store/entitycontact/update.js`*
+
+Updates a contact of an entity.
+
+```js
+const fn = update(pool);
+const contact = await fn(42, 1, 5, 9, { contact: 'b@c.d' });
+// => { id, entityId, contactType, contact, sort }
+```
diff --git a/API.google_auth.md b/API.google_auth.md
new file mode 100644
index 0000000..bb2ddab
--- /dev/null
+++ b/API.google_auth.md
@@ -0,0 +1,84 @@
+# google_auth
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `google_auth.add`
+
+*Source: `src/store/google_auth/add.js`*
+
+Adds a new allowed Google auth email.
+
+```js
+const fn = add(pool);
+const id = await fn('user@example.com');
+// => 1
+```
+
+## `google_auth.getByEmail`
+
+*Source: `src/store/google_auth/getByEmail.js`*
+
+Returns a Google auth row by email.
+
+```js
+const fn = getByEmail(pool);
+const auth = await fn('user@example.com');
+// => { id, email, ... }
+```
+
+## `google_auth.getById`
+
+*Source: `src/store/google_auth/getById.js`*
+
+Returns a Google auth row by its id.
+
+```js
+const fn = getById(pool);
+const auth = await fn(42);
+// => { id, email, ... }
+```
+
+## `google_auth.listAllowedEmails`
+
+*Source: `src/store/google_auth/listAllowedEmails.js`*
+
+Lists all allowed Google auth emails.
+
+```js
+const fn = listAllowedEmails(pool);
+const emails = await fn();
+// => [{ id, email }]
+```
+
+## `google_auth.removeAllowedEmail`
+
+*Source: `src/store/google_auth/removeAllowedEmail.js`*
+
+Removes an allowed Google auth email.
+
+```js
+const fn = removeAllowedEmail(pool);
+await fn('user@example.com');
+```
+
+## `google_auth.setProfile`
+
+*Source: `src/store/google_auth/setProfile.js`*
+
+Updates the profile (picture, picture binary, sub) of a Google auth user.
+
+```js
+const fn = setProfile(pool);
+await fn(42, { picture: 'url', pictureBinary: buffer, sub: 'sub' });
+```
+
+## `google_auth.setSelectedCompany`
+
+*Source: `src/store/google_auth/setSelectedCompany.js`*
+
+Sets the currently selected company for a Google auth user.
+
+```js
+const fn = setSelectedCompany(pool);
+await fn(42, 1);
+```
diff --git a/API.lang.md b/API.lang.md
new file mode 100644
index 0000000..5d20b48
--- /dev/null
+++ b/API.lang.md
@@ -0,0 +1,62 @@
+# lang
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `lang.create`
+
+*Source: `src/store/lang/create.js`*
+
+Creates a new language by its ISO 639 code.
+
+```js
+const fn = create(pool);
+const id = await fn('de');
+// => 1
+```
+
+## `lang.delete`
+
+*Source: `src/store/lang/delete.js`*
+
+Deletes a language by its id.
+
+```js
+const fn = del(pool);
+await fn(1);
+```
+
+## `lang.ensure`
+
+*Source: `src/store/lang/ensure.js`*
+
+Returns the id of a language by ISO code, creating it if it does not exist.
+
+```js
+const fn = ensure(pool);
+const id = await fn('de');
+// => 1
+```
+
+## `lang.getByIso639`
+
+*Source: `src/store/lang/getByIso639.js`*
+
+Returns a language row by its ISO 639 code.
+
+```js
+const fn = getByIso639(pool);
+const lang = await fn('de');
+// => { id, iso639 }
+```
+
+## `lang.list`
+
+*Source: `src/store/lang/list.js`*
+
+Lists all languages.
+
+```js
+const fn = list(pool);
+const languages = await fn();
+// => [{ id, iso639 }]
+```
diff --git a/API.md b/API.md
new file mode 100644
index 0000000..f82fa37
--- /dev/null
+++ b/API.md
@@ -0,0 +1,26 @@
+# LibDashStore API
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+The store is exposed as a `LibDashStore` instance (see `src/index.js`). Each method is an async function that takes a `pool` (mssql connection pool) at construction time and returns a callable function. Methods are grouped by the namespace they are exposed under.
+
+## Table of Contents
+
+- [companyuser](API.companyuser.md)
+- [company](API.company.md)
+- [category](API.category.md)
+- [article](API.article.md)
+- [lang](API.lang.md)
+- [tax](API.tax.md)
+- [unit](API.unit.md)
+- [companysetting](API.companysetting.md)
+- [brand](API.brand.md)
+- [customergroup](API.customergroup.md)
+- [entity](API.entity.md)
+- [entityaddress](API.entityaddress.md)
+- [entitycontact](API.entitycontact.md)
+- [supplier](API.supplier.md)
+- [delivery](API.delivery.md)
+- [posterminal](API.posterminal.md)
+- [google_auth](API.google_auth.md)
+- [pic](API.pic.md)
diff --git a/API.pic.md b/API.pic.md
new file mode 100644
index 0000000..e792d04
--- /dev/null
+++ b/API.pic.md
@@ -0,0 +1,27 @@
+# pic
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `pic.getImageByHash`
+
+*Source: `src/store/pic/getImageByHash.js`*
+
+Returns the full-size image (AVIF) for a given hash.
+
+```js
+const fn = getImageByHash(pool);
+const image = await fn(42, 'abc123');
+// => { buffer, w, h, size, contentType: 'image/avif' }
+```
+
+## `pic.getThumbByHash`
+
+*Source: `src/store/pic/getThumbByHash.js`*
+
+Returns the thumbnail image (AVIF) for a given hash.
+
+```js
+const fn = getThumbByHash(pool);
+const thumb = await fn(42, 'abc123');
+// => { buffer, w, h, contentType: 'image/avif' }
+```
diff --git a/API.posterminal.md b/API.posterminal.md
new file mode 100644
index 0000000..294ac18
--- /dev/null
+++ b/API.posterminal.md
@@ -0,0 +1,86 @@
+# posterminal
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `posterminal.delete`
+
+*Source: `src/store/posterminal/delete.js`*
+
+Deletes a posterminal by its id within a company.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 5);
+```
+
+## `posterminal.list`
+
+*Source: `src/store/posterminal/list.js`*
+
+Lists the posterminals of a company.
+
+```js
+const fn = list(pool);
+const terminals = await fn(42, 1);
+// => [{ id, name, token, pairingpin }]
+```
+
+## `posterminal.setOff`
+
+*Source: `src/store/posterminal/setOff.js`*
+
+Removes a category assignment from a posterminal (turns it off).
+
+```js
+const fn = setOff(pool);
+const result = await fn(42, 1, 5, 9);
+// => { id, categoryIds: [...] }
+```
+
+## `posterminal.setOffAll`
+
+*Source: `src/store/posterminal/setOffAll.js`*
+
+Removes all category assignments from a posterminal.
+
+```js
+const fn = setOffAll(pool);
+const result = await fn(42, 1, 5);
+// => { id, categoryIds: [] }
+```
+
+## `posterminal.setOn`
+
+*Source: `src/store/posterminal/setOn.js`*
+
+Assigns a category to a posterminal (turns it on for that category).
+
+```js
+const fn = setOn(pool);
+const result = await fn(42, 1, 5, 9);
+// => { id, categoryIds: [9, ...] }
+```
+
+## `posterminal.setOnAll`
+
+*Source: `src/store/posterminal/setOnAll.js`*
+
+Assigns all categories of a company to a posterminal.
+
+```js
+const fn = setOnAll(pool);
+const result = await fn(42, 1, 5);
+// => { id, categoryIds: [...] }
+```
+
+## `posterminal.upsert`
+
+*Source: `src/store/posterminal/upsert.js`*
+
+Creates or updates a posterminal for a company.
+
+```js
+const fn = upsert(pool);
+const terminal = await fn(42, 1, { name: 'Kasse 1', pairingpin: '1234', token: 'abc' });
+// => { id, name, token, pairingpin }
+```
diff --git a/API.supplier.md b/API.supplier.md
new file mode 100644
index 0000000..5abab79
--- /dev/null
+++ b/API.supplier.md
@@ -0,0 +1,50 @@
+# supplier
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `supplier.create`
+
+*Source: `src/store/supplier/create.js`*
+
+Creates a new supplier for a company, recording history.
+
+```js
+const fn = create(pool);
+const supplier = await fn(42, 1, { name: 'Acme Supplies' });
+// => { id, name, createdAt, updatedAt }
+```
+
+## `supplier.delete`
+
+*Source: `src/store/supplier/delete.js`*
+
+Deletes a supplier by its id within a company.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 5);
+```
+
+## `supplier.list`
+
+*Source: `src/store/supplier/list.js`*
+
+Lists the suppliers of a company.
+
+```js
+const fn = list(pool);
+const suppliers = await fn(42, 1);
+// => [{ id, name, createdAt, updatedAt }]
+```
+
+## `supplier.update`
+
+*Source: `src/store/supplier/update.js`*
+
+Updates the name of a supplier, recording history.
+
+```js
+const fn = update(pool);
+const supplier = await fn(42, 1, 5, { name: 'Acme GmbH' });
+// => { id, name, createdAt, updatedAt }
+```
diff --git a/API.tax.md b/API.tax.md
new file mode 100644
index 0000000..d6f77c4
--- /dev/null
+++ b/API.tax.md
@@ -0,0 +1,51 @@
+# tax
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `tax.create`
+
+*Source: `src/store/tax/create.js`*
+
+Creates a new tax rate.
+
+```js
+const fn = create(pool);
+const id = await fn(19);
+// => 1
+```
+
+## `tax.ensure`
+
+*Source: `src/store/tax/ensure.js`*
+
+Returns the id of a tax rate, creating it if it does not exist.
+
+```js
+const fn = ensure(pool);
+const id = await fn(19);
+// => 1
+```
+
+## `tax.getByRate`
+
+*Source: `src/store/tax/getByRate.js`*
+
+Returns a tax row by its rate.
+
+```js
+const fn = getByRate(pool);
+const tax = await fn(19);
+// => { id, rate }
+```
+
+## `tax.list`
+
+*Source: `src/store/tax/list.js`*
+
+Lists all tax rates.
+
+```js
+const fn = list(pool);
+const taxes = await fn();
+// => [{ id, rate }]
+```
diff --git a/API.unit.md b/API.unit.md
new file mode 100644
index 0000000..7d10790
--- /dev/null
+++ b/API.unit.md
@@ -0,0 +1,38 @@
+# unit
+
+This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.
+
+## `unit.delete`
+
+*Source: `src/store/unit/delete.js`*
+
+Deletes a unit for a company by its SI code.
+
+```js
+const fn = del(pool);
+await fn(42, 1, 'l');
+```
+
+## `unit.list`
+
+*Source: `src/store/unit/list.js`*
+
+Lists the units available for a company.
+
+```js
+const fn = list(pool);
+const units = await fn(42, 1);
+// => [{ id, si, basesi, basesifactor, symbol, name }]
+```
+
+## `unit.upsert`
+
+*Source: `src/store/unit/upsert.js`*
+
+Creates or updates a unit for a company, keyed by its SI code.
+
+```js
+const fn = upsert(pool);
+const unit = await fn(42, 1, { si: 'l', basesi: 'm3', basesifactor: 0.001, symbol: 'L', name: 'Liter' });
+// => { id, si, basesi, basesifactor, symbol, name }
+```
diff --git a/README.md b/README.md
index fe3db67..f459dcc 100644
--- a/README.md
+++ b/README.md
@@ -20,8 +20,6 @@ ID fields in the JS API use camelCase `…Id` (DB columns stay snake_case). `goo
 
 ## Schema
 
-**Kein Migrations-Code:** Wir gehen von einer frischen DB aus (`npm run reset-db`). Schema nur in `src/schema.js`; Anpassungen an einer laufenden DB manuell per `sqlcmd`, nicht im Repo.
-
 | Method | Description |
 | --- | --- |
 | `initialize()` | Runs all `SCHEMA_SCRIPTS` (`IF NOT EXISTS`). Does **not** purge. |
diff --git a/generate-api-doc.js b/generate-api-doc.js
new file mode 100644
index 0000000..1c4f0fa
--- /dev/null
+++ b/generate-api-doc.js
@@ -0,0 +1,225 @@
+import { readdirSync, readFileSync, writeFileSync, statSync } from 'node:fs';
+import { dirname, join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const storeDir = join(__dirname, 'src', 'store');
+const outputPath = join(__dirname, 'API.md');
+
+// Modules that are exposed on the LibDashStore instance (from src/index.js).
+// Order here controls the order of sections in the generated document.
+const MODULE_ORDER = [
+  'companyuser',
+  'company',
+  'category',
+  'article',
+  'lang',
+  'tax',
+  'unit',
+  'companysetting',
+  'brand',
+  'customergroup',
+  'entity',
+  'entityaddress',
+  'entitycontact',
+  'supplier',
+  'delivery',
+  'quote',
+  'order',
+  'posterminal',
+  'google_auth',
+  'pic',
+];
+
+// Files that are internal helpers and should not appear as public API entries.
+const INTERNAL_FILES = new Set([
+  'request.js',
+  'slugify.js',
+  'initialize.js',
+  'purge.js',
+  'helpers.js',
+  'writeLines.js',
+  'shapeSetting.js',
+  'shapeUnit.js',
+  'ensureDefault.js',
+  'ensureLieferantenGroup.js',
+  'resolveCompanyAccess.js',
+  'resolveCategoryAccess.js',
+  'resolveCustomerGroupAccess.js',
+  'resolveEntityAccess.js',
+  'resolvePicAccess.js',
+  'resolveArticleBySku.js',
+  'queryBySku.js',
+  'queryCategoryArticles.js',
+  'getCategoryPosterminalIds.js',
+  'nextSku.js',
+  'createStore.js',
+  'index.js',
+]);
+
+/**
+ * Extract the leading JSDoc block from a source string.
+ * @param {string} source
+ * @returns {{ description: string, example: string } | null}
+ */
+function extractJsDoc(source) {
+  const match = source.match(/\/\*\*([\s\S]*?)\*\//);
+  if (!match) return null;
+
+  const block = match[1];
+  const lines = block
+    .split('\n')
+    .map((l) => l.replace(/^\s*\*\s?/, '').replace(/^\s*\*/, ''));
+
+  const description = [];
+  const example = [];
+  let inExample = false;
+
+  for (const line of lines) {
+    if (line.trim() === '@example') {
+      inExample = true;
+      continue;
+    }
+    if (line.trim().startsWith('@')) {
+      inExample = false;
+      continue;
+    }
+    if (inExample) {
+      example.push(line);
+    } else if (line.trim()) {
+      description.push(line.trim());
+    }
+  }
+
+  return {
+    description: description.join(' ').trim(),
+    example: example.join('\n').trim(),
+  };
+}
+
+/**
+ * Recursively collect all .js files under a directory.
+ * @param {string} dir
+ * @returns {string[]} absolute file paths
+ */
+function collectFiles(dir) {
+  const out = [];
+  for (const entry of readdirSync(dir)) {
+    const full = join(dir, entry);
+    if (statSync(full).isDirectory()) {
+      out.push(...collectFiles(full));
+    } else if (entry.endsWith('.js')) {
+      out.push(full);
+    }
+  }
+  return out;
+}
+
+/**
+ * Build a map of module name -> array of { name, file, description, example }.
+ * @returns {Map<string, Array<object>>}
+ */
+function buildModules() {
+  const modules = new Map();
+
+  for (const file of collectFiles(storeDir)) {
+    const rel = file.slice(storeDir.length + 1).split('/');
+    const moduleName = rel[0];
+    const fileName = rel[rel.length - 1];
+
+    if (INTERNAL_FILES.has(fileName)) continue;
+
+    const source = readFileSync(file, 'utf8');
+    const doc = extractJsDoc(source);
+    if (!doc) continue;
+
+    const fnName = fileName.replace(/\.js$/, '');
+    if (!modules.has(moduleName)) {
+      modules.set(moduleName, []);
+    }
+    modules.get(moduleName).push({
+      name: fnName,
+      file: rel.join('/'),
+      description: doc.description,
+      example: doc.example,
+    });
+  }
+
+  return modules;
+}
+
+function renderSection(moduleName, entries) {
+  const lines = [];
+  lines.push(`# ${moduleName}`);
+  lines.push('');
+  lines.push(
+    'This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.',
+  );
+  lines.push('');
+
+  for (const entry of entries) {
+    lines.push(`## \`${moduleName}.${entry.name}\``);
+    lines.push('');
+    lines.push(`*Source: \`src/store/${entry.file}\`*`);
+    lines.push('');
+    if (entry.description) {
+      lines.push(entry.description);
+      lines.push('');
+    }
+    if (entry.example) {
+      lines.push('```js');
+      lines.push(entry.example);
+      lines.push('```');
+      lines.push('');
+    }
+  }
+
+  return lines.join('\n');
+}
+
+function render() {
+  const modules = buildModules();
+
+  const ordered = MODULE_ORDER.filter((m) => modules.has(m));
+  const extra = [...modules.keys()].filter((m) => !MODULE_ORDER.includes(m)).sort();
+  const moduleNames = [...ordered, ...extra];
+
+  // Write one file per section: API.<section>.md
+  const written = [];
+  for (const moduleName of moduleNames) {
+    const sectionPath = join(__dirname, `API.${moduleName}.md`);
+    const markdown = renderSection(moduleName, modules.get(moduleName));
+    writeFileSync(sectionPath, markdown, 'utf8');
+    written.push({ moduleName, sectionPath, bytes: markdown.length });
+  }
+
+  // Write the index API.md linking to each section file.
+  const lines = [];
+  lines.push('# LibDashStore API');
+  lines.push('');
+  lines.push(
+    'This document is auto-generated from the JSDoc comments in `src/store` by running `npm run api-doc`.',
+  );
+  lines.push('');
+  lines.push(
+    'The store is exposed as a `LibDashStore` instance (see `src/index.js`). Each method is an async function that takes a `pool` (mssql connection pool) at construction time and returns a callable function. Methods are grouped by the namespace they are exposed under.',
+  );
+  lines.push('');
+  lines.push('## Table of Contents');
+  lines.push('');
+
+  for (const { moduleName } of written) {
+    lines.push(`- [${moduleName}](API.${moduleName}.md)`);
+  }
+
+  lines.push('');
+
+  return { index: lines.join('\n'), written };
+}
+
+const { index, written } = render();
+writeFileSync(outputPath, index, 'utf8');
+console.log(`Wrote ${outputPath} (${index.length} bytes)`);
+for (const { moduleName, sectionPath, bytes } of written) {
+  console.log(`Wrote ${sectionPath} (${bytes} bytes)`);
+}
diff --git a/package.json b/package.json
index e22905f..6809ec3 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
   },
   "scripts": {
     "schema-graph": "node generate-schema-graph.js",
+    "api-doc": "node generate-api-doc.js",
     "init-schema": "node scripts/init-schema.js",
     "purge-db": "node scripts/purge-db.js",
     "reset-db": "node scripts/reset-db.js",