chore: add tests for schema and API config mocking

- Added unit tests for schema loader, mocking Config variables and resolvers.
- Added unit tests for Zabbix API configuration, verifying constants derived from Config.
- Mocked relevant modules and filesystem behaviors to enable isolated testing.
- Optimized imports on all files and include this within a new .junie/guidelines.md file

src/test/user_rights.test.ts

@@ -1,4 +1,3 @@
-
 import {createResolvers} from "../api/resolvers.js";
 import {zabbixAPI} from "../datasources/zabbix-api.js";
 
@@ -11,6 +10,13 @@ jest.mock("../datasources/zabbix-api.js", () => ({
     }
 }));
 
+// Mocking Config
+jest.mock("../common_utils.js", () => ({
+    Config: {
+        ZABBIX_PERMISSION_TEMPLATE_GROUP_NAME_PREFIX: "CustomPerms"
+    }
+}));
+
 describe("User Rights and Permissions Resolvers", () => {
     let resolvers: any;
 
@@ -53,7 +59,7 @@ describe("User Rights and Permissions Resolvers", () => {
                 }
             ]);
             if (path === "templategroup.get.permissions") return Promise.resolve([
-                { groupid: "1001", name: "Permissions/Hostgroup/1001" }
+                { groupid: "1001", name: "CustomPerms/Hostgroup/1001" }
             ]);
             return Promise.resolve([]);
         });
@@ -79,7 +85,7 @@ describe("User Rights and Permissions Resolvers", () => {
                 }
             ]);
             if (path === "templategroup.get.permissions") return Promise.resolve([
-                { groupid: "1002", name: "Permissions/Hostgroup/1002" }
+                { groupid: "1002", name: "CustomPerms/Hostgroup/1002" }
             ]);
             return Promise.resolve([]);
         });