Add company settings and number sequence API routes

- Add CompanySetting routes (list, get, set) backed by company-scoped store
- Add Number routes (list, update) for managing number sequences
- Register new store namespaces for numbers and companysetting
- Add CompanySetting and NumberSequence schemas to OpenAPI
- Regenerate API docs and index for the new routes

docs/api/README.md

@@ -63,6 +63,9 @@ Generated from `@openapi` annotations in [`src/api/routes/`](../../src/api/route
 | [`routes/category/add-image.md`](routes/category/add-image.md) | `POST /category/{id}/image` |
 | [`routes/company/list.md`](routes/company/list.md) | `GET /company` |
 | [`routes/company/create.md`](routes/company/create.md) | `POST /company` |
+| [`routes/companysetting/list.md`](routes/companysetting/list.md) | `GET /company/setting` |
+| [`routes/companysetting/get.md`](routes/companysetting/get.md) | `GET /company/setting/{key}` |
+| [`routes/companysetting/set.md`](routes/companysetting/set.md) | `PUT /company/setting/{key}` |
 | [`routes/company/delete.md`](routes/company/delete.md) | `DELETE /company/{id}` |
 | [`routes/company/update.md`](routes/company/update.md) | `PUT /company/{id}` |
 | [`routes/customergroup/list.md`](routes/customergroup/list.md) | `GET /customergroup` |
@@ -92,6 +95,8 @@ Generated from `@openapi` annotations in [`src/api/routes/`](../../src/api/route
 | [`routes/events.md`](routes/events.md) | `GET /events` |
 | [`routes/health.md`](routes/health.md) | `GET /health` |
 | [`routes/image/get.md`](routes/image/get.md) | `GET /image/{fullHash}` |
+| [`routes/number/list.md`](routes/number/list.md) | `GET /number` |
+| [`routes/number/update.md`](routes/number/update.md) | `PATCH /number/{id}` |
 | [`routes/order/list.md`](routes/order/list.md) | `GET /order` |
 | [`routes/order/create.md`](routes/order/create.md) | `POST /order` |
 | [`routes/order/delete.md`](routes/order/delete.md) | `DELETE /order/{id}` |