feat(rbac): enforce procurement write restrictions and support supervisor role in SSO

backend/app/routers/supplier_materials.py

@@ -8,6 +8,7 @@ from fastapi import APIRouter, Depends, Query
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from app.auth import require_role
 from app.db.engine import get_db
 from app.models.catalog import Material, MaterialCategory
 from app.models.procurement import Supplier, SupplierMaterial
@@ -18,6 +19,7 @@ from app.utils.pagination import paginate
 from app.utils.serialization import to_iso
 
 router = APIRouter(tags=["supplier-materials"])
+_procurement_writer = require_role("admin", "procurement_manager")
 
 
 def link_to_dict(link: SupplierMaterial, material: Material | None = None,
@@ -63,7 +65,10 @@ async def list_supplier_materials(
 
 @router.post("/suppliers/{supplier_id}/materials", status_code=201)
 async def create_supplier_material(
-    supplier_id, payload: SupplierMaterialCreate, db: AsyncSession = Depends(get_db)
+    supplier_id,
+    payload: SupplierMaterialCreate,
+    db: AsyncSession = Depends(get_db),
+    _auth=Depends(_procurement_writer),
 ):
     async with db.begin():
         link = await link_supplier_material(db, supplier_id, payload.material_id)
@@ -72,7 +77,12 @@ async def create_supplier_material(
 
 
 @router.delete("/suppliers/{supplier_id}/materials/{material_id}")
-async def delete_supplier_material(supplier_id, material_id, db: AsyncSession = Depends(get_db)):
+async def delete_supplier_material(
+    supplier_id,
+    material_id,
+    db: AsyncSession = Depends(get_db),
+    _auth=Depends(_procurement_writer),
+):
     async with db.begin():
         await unlink_supplier_material(db, supplier_id, material_id)
     return {"data": {"supplier_id": str(supplier_id), "material_id": str(material_id), "deleted": True}}