Align store calls with selected-company scoping and add entity numbers.

Drop companyId from company-scoped store wrappers and routes, add GET /entity/next-number plus optional number on entity create/update, and document dashdbschema API.md lookup in sibling-repos.

docs/api/routes/entity/list.md

@@ -5,7 +5,8 @@ Protected. Requires a valid session cookie (`credentials: 'include'`).
 List entities
 
 Lists entities for the selected company. Optional `customergroupId`
-query filters to one group (must belong to the company).
+filters to one group. Optional `role=customer` excludes Lieferanten/POS
+groups (for quote/order pickers). `role` wins when both are set.
 
 
 ## Query parameters
@@ -13,6 +14,7 @@ query filters to one group (must belong to the company).
 | Param | Required | Type | Description |
 |-------|----------|------|-------------|
 | `customergroupId` | no | integer |  |
+| `role` | no | string |  |
 
 ## Response `200`
 
@@ -26,6 +28,7 @@ Entity list
       "customergroupId": 1,
       "firstName": "…",
       "name": "…",
+      "number": "…",
       "createdAt": "2026-08-10T00:00:00.000Z",
       "updatedAt": "2026-08-10T00:00:00.000Z"
     }
@@ -37,7 +40,7 @@ Entity list
 
 | Status | Description |
 |--------|-------------|
-| 400 | No company selected or invalid customergroupId — `{"error":"…"}` |
+| 400 | No company selected, invalid customergroupId, or invalid role — `{"error":"…"}` |
 | 401 | Unauthorized — `{"error":"…"}` |
 | 403 | Not authorized — `{"error":"…"}` |
 | 404 | Company or customer group not found — `{"error":"…"}` |