Remove dedicated POST /category/:id/move route.

Dropping the standalone move endpoint; category relocation is now covered
by PATCH /category/:id via parentId (merged with name rename). Removes the
move route docs and regenerates API docs.

docs/api/routes/category/move.md

@@ -1,48 +0,0 @@
-# `POST /category/{id}/move`
-
-Protected. Requires a valid session cookie (`credentials: 'include'`).
-
-Move category to a new parent
-
-Moves a category to a new parent. Both source and target must be in
-the same authorized company. Moving into itself or into a descendant
-(cycle) fails with `Invalid parent`. The moved category gets the next
-sibling `sort` under the new parent.
-
-
-## Path parameters
-
-| Param | Required | Type | Description |
-|-------|----------|------|-------------|
-| `id` | yes | integer | Category id to move |
-
-## Body (JSON)
-
-```json
-{
-  "parentId": 3
-}
-```
-
-## Response `200`
-
-Moved category
-
-```json
-{
-  "category": { … }
-}
-```
-
-## Errors
-
-| Status | Description |
-|--------|-------------|
-| 400 | Invalid parent — `{"error":"…"}` |
-| 401 | Unauthorized — `{"error":"…"}` |
-| 403 | Not authorized — `{"error":"…"}` |
-| 404 | Category not found — `{"error":"…"}` |
-
----
-
-_Generated from `@openapi` JSDoc. Do not edit by hand — run `npm run docs:api`._