Improve the frontend and repository layer

gateway/app/routes/tenant.py

@@ -58,6 +58,35 @@ async def delete_user_tenants(request: Request, user_id: str = Path(...)):
     """Get all tenant memberships for a user (admin only)"""
     return await _proxy_to_tenant_service(request, f"/api/v1/tenants/user/{user_id}/memberships")
 
+# ================================================================
+# TENANT SETTINGS ENDPOINTS
+# ================================================================
+
+@router.get("/{tenant_id}/settings")
+async def get_tenant_settings(request: Request, tenant_id: str = Path(...)):
+    """Get all settings for a tenant"""
+    return await _proxy_to_tenant_service(request, f"/api/v1/tenants/{tenant_id}/settings")
+
+@router.put("/{tenant_id}/settings")
+async def update_tenant_settings(request: Request, tenant_id: str = Path(...)):
+    """Update tenant settings"""
+    return await _proxy_to_tenant_service(request, f"/api/v1/tenants/{tenant_id}/settings")
+
+@router.get("/{tenant_id}/settings/{category}")
+async def get_category_settings(request: Request, tenant_id: str = Path(...), category: str = Path(...)):
+    """Get settings for a specific category"""
+    return await _proxy_to_tenant_service(request, f"/api/v1/tenants/{tenant_id}/settings/{category}")
+
+@router.put("/{tenant_id}/settings/{category}")
+async def update_category_settings(request: Request, tenant_id: str = Path(...), category: str = Path(...)):
+    """Update settings for a specific category"""
+    return await _proxy_to_tenant_service(request, f"/api/v1/tenants/{tenant_id}/settings/{category}")
+
+@router.post("/{tenant_id}/settings/{category}/reset")
+async def reset_category_settings(request: Request, tenant_id: str = Path(...), category: str = Path(...)):
+    """Reset a category to default values"""
+    return await _proxy_to_tenant_service(request, f"/api/v1/tenants/{tenant_id}/settings/{category}/reset")
+
 # ================================================================
 # TENANT SUBSCRIPTION ENDPOINTS
 # ================================================================
@@ -248,6 +277,13 @@ async def proxy_tenant_transformations_with_path(request: Request, tenant_id: st
     target_path = f"/api/v1/tenants/{tenant_id}/transformations/{path}".rstrip("/")
     return await _proxy_to_inventory_service(request, target_path, tenant_id=tenant_id)
 
+@router.api_route("/{tenant_id}/sustainability/{path:path}", methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"])
+async def proxy_tenant_sustainability(request: Request, tenant_id: str = Path(...), path: str = ""):
+    """Proxy tenant sustainability requests to inventory service"""
+    # The inventory service sustainability endpoints are tenant-scoped: /api/v1/tenants/{tenant_id}/sustainability/{path}
+    target_path = f"/api/v1/tenants/{tenant_id}/sustainability/{path}".rstrip("/")
+    return await _proxy_to_inventory_service(request, target_path, tenant_id=tenant_id)
+
 # ================================================================
 # TENANT-SCOPED PRODUCTION SERVICE ENDPOINTS
 # ================================================================