Migrate existing repositories to use standardized Creator and Updater patterns

## Overview

Migrate existing repository implementations to use the new standardized Creator and Updater patterns.

## Background

With the Creator and Updater patterns now implemented in the base repository layer, existing repositories need to be updated to use these standardized patterns instead of their custom implementations.

## Goals

1. Identify all repositories with custom create/update implementations
1. Refactor to use the new Creator pattern
1. Refactor to use the new Updater pattern
1. Remove deprecated custom implementations
1. Ensure consistent behavior across all repositories

## Scope

Repositories to migrate:

- Scheduling history repositories
- Deployment history repositories
- Session repositories
- Other repositories with custom CRUD implementations

## Acceptance Criteria

- [ ] All custom creator implementations replaced with Creator pattern
- [ ] All custom updater implementations replaced with Updater pattern
- [ ] Deprecated code removed
- [ ] All existing tests pass
- [ ] No regression in functionality
- [ ] Code review completed

JIRA Issue: BA-3348