feat: update values.yaml and refactor cleanup paths

- Changed project name in values.yaml from "sientia-dataops-model-manager" to "sientia-model-manager".
- Added new environment variables for GitHub repository and branch configuration.
- Refactored cleanup paths to use a centralized REPORTS_TEMP_DIR constant for consistency.
- Updated runtime configurations and adjusted volume mounts for better resource management.
- Enabled SSH access for the model manager and disabled Grafana dashboard creation.
- Updated tests to reflect changes in directory paths and environment variable usage.

model_manager/utils/repository/data_manager_repository.py

@@ -27,6 +27,7 @@ from sientia_do.observability.sientia_monitoring import SientiaMonitoring
 from sientia_do.temporal.constants import DATETIME_FORMAT_WITH_TZ
 from sientia_model.wrappers.sientia_model import SientiaModel
 
+from model_manager.runtime_paths import REPORTS_ROOT
 from model_manager.sientia.metrics import mae, mse, r2
 from model_manager.sientia.reports import Reports  # type: ignore[import-untyped]
 from model_manager.utils.models.train_model_params import TrainModelParams
@@ -394,14 +395,9 @@ class DataManagerRepository(SientiaMonitoring):
         Get the absolute path to the reports directory.
 
         Returns:
-            str: Absolute path to model_manager/reports directory.
+            str: Absolute path to the runtime reports root.
         """
-        # Get the directory where this file is located (model_manager/utils/repository/)
-        current_file_dir = path.dirname(path.abspath(__file__))
-        # Navigate up to model_manager/ and then to reports/
-        model_manager_dir = path.dirname(path.dirname(current_file_dir))
-        reports_dir = path.join(model_manager_dir, 'reports')
-        return reports_dir
+        return REPORTS_ROOT
 
     def _create_run_directory(
         self, base_path: str, run_name: str, metadata: dict[str, Any] | None = None