SIENTIAPDE-1325

Remove unused Couchbase configurations and related code. Refactor Activities class to eliminate Couchbase dependency, updating initialization and shutdown methods. Update README and tests to reflect these changes. Upgrade sientia-dataops-library dependency version in requirements.txt.

README.md

@@ -408,7 +408,6 @@ The orchestrator includes an advanced notification filtering system that prevent
 - **Email**: SMTP operations with HTML generation and attachment support
 - **Formatters**: Configuration processing, slot distribution algorithms, and notification filtering for reports
 - **Postgres**: PostgreSQL operations for audit logging and data export (via sientia-dataops-library)
-- **Couchbase**: Database operations (currently unused but maintained for future use)
 
 #### **Utilities (`orchestrator/utils/`)**
 - **Connectors Configuration**: Database and service configuration management
@@ -642,7 +641,6 @@ The Orchestrator system exposes comprehensive Prometheus metrics:
 tests/
 ├── orchestrator/           # Orchestrator workflow tests
 │   ├── test_activities.py
-│   ├── test_couchbase.py
 │   ├── test_email.py
 │   ├── test_formatters.py
 │   ├── test_mongo_db.py
@@ -755,7 +753,6 @@ orchestrator/
 │   ├── mongo_db.py         # MongoDB operations
 │   ├── email.py            # Email service operations
 │   ├── formatters.py       # Configuration formatting and report filtering
-│   └── couchbase.py        # Couchbase operations (currently unused)
 ├── workflows/               # Temporal workflow definitions
 │   ├── orchestrator.py     # Main orchestration workflow
 │   ├── alerts.py           # Error alert workflow