SIENTIAPDE-1243: Initial commit of the model manager project, adding core files and configurations.

This commit introduces the initial project structure, including:
- .env.example: Example environment configuration.
- .github/workflows/quality-gate.yml: CI workflow for quality checks.
- .gitignore: Specifies intentionally untracked files that Git should ignore.
- Makefile: Automation of tasks like docker builds.
- README.md: Project documentation.
- Source code for model management, activities, utils, worker and workflows.
- Test suite.
- Dockerfile for the simulator.
- sonar-project.properties: SonarQube configuration file.
- values.yaml: Helm chart values for deployment.

model-manager/workflows/minimal_retrain.py

@@ -0,0 +1,116 @@
+from temporalio import workflow
+
+with workflow.unsafe.imports_passed_through():
+    from laborious.activities.activities import Activities
+    from typing import Any
+    from sientia_do.temporal.policies import retry_policy
+    from datetime import timedelta
+
+
+@workflow.defn(name="minimal_retrain")
+class MinimalRetrain():
+    """
+    Automated model retraining workflow for the Laborious system.
+
+    This workflow implements a complete model retraining pipeline that loads
+    training data, executes model retraining, updates production models,
+    and maintains comprehensive audit trails. It's designed for automated
+    model lifecycle management with minimal manual intervention.
+
+    The workflow provides a robust retraining process with:
+    - Automated data loading from configured data sources
+    - MLFlow model retraining with quality validation
+    - Production model updates with version control
+    - Comprehensive reporting and audit trail maintenance
+    - Error handling and notification integration
+    """
+
+    @workflow.run
+    async def run(self, input_data: dict[str, Any]):
+        """
+        Execute the automated model retraining workflow.
+
+        This method orchestrates the complete model retraining process by:
+        1. Loading training data using the provided custom SQL query
+        2. Executing MLFlow model retraining with the loaded data
+        3. Updating production models with newly trained versions
+        4. Persisting comprehensive retraining reports to database
+
+        The method implements comprehensive error handling and ensures all
+        required parameters are properly configured before proceeding.
+
+        Args:
+            input_data: Complete configuration for the retraining workflow
+                Required keys:
+                    - schedule_name (str): Schedule identifier for the retraining
+                    - model_name (str): Name of the ML model to retrain
+                    - model_id (int): Unique identifier for the model version
+                    - query (str): SQL query for training data loading
+                    - schema (str, optional): Database schema for report storage
+                    - table_name (str, optional): Target table for retraining reports
+                    - datetime_columns (list[str], optional): Columns to treat as datetime
+
+        Returns:
+            None: The workflow completes successfully when all steps finish
+
+        Raises:
+            Exception: If any required parameters are missing or if the workflow fails
+                during data loading, retraining, or model update operations
+        """
+
+        metadata = {
+            'metadata': {
+                'schedule_name': input_data['schedule_name'],
+                'model_name': input_data['model_name'],
+                'model_id': input_data['model_id'],
+                'workflow_name': 'minimal_retrain'
+            }
+        }
+
+        model_name = input_data['model_name']
+
+        data = await workflow.execute_local_activity_method(
+            Activities.load_custom_query,
+            {
+                **metadata,
+                'query': input_data['query'],
+                'datetime_columns': input_data.get('datetime_columns', [])
+            },
+            retry_policy=retry_policy,
+            start_to_close_timeout=timedelta(seconds=60)
+        )
+
+        experiment_response = await workflow.execute_activity_method(
+            Activities.retrain_model,
+            {
+                **metadata,
+                'data': data,
+                'model_name': model_name
+            },
+            retry_policy=retry_policy,
+            start_to_close_timeout=timedelta(seconds=60)
+        )
+
+        report = await workflow.execute_activity_method(
+            Activities.update_production_model,
+            {
+                **metadata,
+                'model_name': model_name,
+                'model_id': input_data['model_id'],
+                **experiment_response
+            },
+            retry_policy=retry_policy,
+            start_to_close_timeout=timedelta(seconds=60)
+        )
+
+        await workflow.execute_activity_method(
+            Activities.export_data_to_postgres,
+            {
+                **metadata,
+                'data': report,
+                'schema': input_data['schema'],
+                'table_name': input_data['table_name']
+            },
+            retry_policy=retry_policy,
+            start_to_close_timeout=timedelta(seconds=60)
+        )