Add delivery and supplier HTTP APIs with expanded response docs.

Wire store-backed CRUD for goods receipts and suppliers, and teach the API doc generator to expand $ref/allOf/array samples so route markdown shows full JSON shapes.

docs/api/routes/supplier/delete.md

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+# `DELETE /supplier/{id}`
+
+Protected. Requires a valid session cookie (`credentials: 'include'`).
+
+Delete supplier
+
+Deletes the supplier entity for the selected company.
+Related `entityhistory` cascades; `manifest.entity_id` is set null.
+
+
+## Path parameters
+
+| Param | Required | Type | Description |
+|-------|----------|------|-------------|
+| `id` | yes | integer |  |
+
+## Response `204`
+
+Deleted
+
+_No content_
+
+## Errors
+
+| Status | Description |
+|--------|-------------|
+| 400 | No company selected or invalid id — `{"error":"…"}` |
+| 401 | Unauthorized — `{"error":"…"}` |
+| 403 | Not authorized — `{"error":"…"}` |
+| 404 | Supplier not found — `{"error":"…"}` |
+
+---
+
+_Generated from `@openapi` JSDoc. Do not edit by hand — run `npm run docs:api`._