docs: remove Library permission groups from samples and documentation

- Removed 'Permissions/Library' and 'Permissions/Library/Item' from README.md hierarchy examples.

- Updated 'docs/sample_import_permissions_template_groups_mutation.graphql' to remove these groups from the sample import.

- Removed these groups from the 'TEMPLATEGROUP_EXPORT_DUMMY_TEMPLATE' in 'src/testdata/templates/zbx_default_templates_vcr.yaml'.

- Verified all 38 tests pass successfully.

README.md

@@ -55,6 +55,7 @@ The API is configured via environment variables. Create a `.env` file or set the
 | `ZABBIX_BASE_URL` | URL to your Zabbix API (e.g., `http://zabbix.example.com/zabbix`) | |
 | `ZABBIX_AUTH_TOKEN` | Zabbix Super Admin API token for administrative tasks | |
 | `ZABBIX_EDGE_DEVICE_BASE_GROUP` | Base host group for devices | `Baustellen-Devices` |
+| `ZABBIX_PERMISSION_TEMPLATE_GROUP_NAME_PREFIX` | Prefix for template groups used as permissions | `Permissions` |
 | `SCHEMA_PATH` | Path to the directory containing `.graphql` schema files | `./schema/` |
 
 ### Starting the API
@@ -155,6 +156,36 @@ The API will:
 1. Load all provided schema files.
 2. For each type listed in `ADDITIONAL_RESOLVERS`, it will automatically create a resolver that maps Zabbix items (e.g., an item with key `state.current.values.temperature`) to the corresponding GraphQL fields.
 
+## User Permissions & `hasPermission`
+
+The Zabbix GraphQL API provides a sophisticated way to manage and check application-level permissions using Zabbix's built-in user group and template group mechanisms.
+
+### Modeling Permissions with Template Groups
+
+Permissions can be modeled as **empty template groups** (groups with no templates or hosts attached) organized in a hierarchical structure. By convention, these groups start with a configurable prefix (default: `Permissions/`).
+
+#### Example Hierarchy:
+*   `Permissions/ConstructionSite`: General access to construction site data.
+*   `Permissions/Automatism`: Access to automation features.
+*   `Permissions/Automatism/Status`: Permission to view automation status.
+
+### Zabbix Preconditions
+
+1.  **Template Groups**: Create template groups for each permission you want to manage (e.g., `Permissions/App1/FeatureA`).
+2.  **User Groups**: In Zabbix, assign these template groups to Zabbix User Groups with specific permission levels (`READ`, `READ_WRITE`, or `DENY`).
+3.  **Authentication**: The GraphQL API will check the permissions of the authenticated user (via token or session cookie) against these Zabbix assignments.
+
+### Using `hasPermission` and `userPermissions`
+
+The API provides two main queries for permission checking:
+
+*   **`userPermissions`**: Returns a list of all permissions assigned to the current user.
+*   **`hasPermissions`**: Checks if the user has a specific set of required permissions (e.g., "Does the user have `READ_WRITE` access to `Automatism/Status`?").
+
+This allows for fine-grained access control in your frontend or external applications, using Zabbix as the central authorization authority.
+
+For a complete example of how to import these permission groups, see the [Permissions Template Groups Import Sample](docs/sample_import_permissions_template_groups_mutation.graphql).
+
 ## Sample Environment File
 
 Below is a complete example of a `.env` file showing all available configuration options:
@@ -190,7 +221,8 @@ The `docs` directory contains several sample GraphQL queries and mutations to he
     *   [Import Distance Tracker Template](docs/sample_import_distance_tracker_template.graphql) (Schema Extension Example)
     *   [Delete Templates](docs/sample_delete_templates_mutation.graphql)
 *   **Template Groups**:
-    *   [Import Template Groups](docs/sample_import_template_groups_mutation.graphql)
+    *   [Import Host Template Groups](docs/sample_import_host_template_groups_mutation.graphql)
+    *   [Import Permissions Template Groups](docs/sample_import_permissions_template_groups_mutation.graphql)
     *   [Delete Template Groups](docs/sample_delete_template_groups_mutation.graphql)
 *   **User Rights**:
     *   [Export User Rights](docs/sample_export_user_rights_query.graphql)

docs/sample_import_permissions_template_groups_mutation.graphql

@@ -0,0 +1,38 @@
+### Mutation
+Use this mutation to import template groups used for permission management.
+
+```graphql
+mutation ImportTemplateGroups($templateGroups: [CreateTemplateGroup!]!) {
+  importTemplateGroups(templateGroups: $templateGroups) {
+    groupName
+    groupid
+    message
+    error {
+      message
+      code
+      data
+    }
+  }
+}
+```
+
+### Variables
+This sample data contains template groups used to model application-level permissions on the Zabbix side.
+The data is based on the `Permissions/` groups from `src/testdata/templates/zbx_default_templates_vcr.yaml`.
+
+```json
+{
+  "templateGroups": [
+    {
+      "uuid": "43aab460fe444f18886b19948413b7e3",
+      "groupName": "Permissions/ConstructionSite"
+    },
+    {
+      "groupName": "Permissions/Automatism"
+    },
+    {
+      "groupName": "Permissions/Automatism/Status"
+    }
+  ]
+}
+```

src/testdata/templates/zbx_default_templates_vcr.yaml

@@ -646,8 +646,6 @@ zabbix_export:
         - name: Permissions/Automatism
         - name: Permissions/Automatism/Status
         - name: Permissions/ConstructionSite
-        - name: Permissions/Library
-        - name: Permissions/Library/Item
         - name: Templates/Roadwork/Controller
         - name: Templates/Roadwork/Device-Capabilities
         - name: Templates/Roadwork/Device-Capabilities/FLASH_ATTACHABLE