Refactor code to improve security, error handling, and implement missing functionalities.

* **app.py**
  - Remove unused imports and redundant code.
  - Replace hardcoded paths and credentials with environment variables.
  - Improve error handling and logging consistency.
  - Add settings tab and related functionalities.

* **src/advanced_malware_analysis.py**
  - Replace placeholder comments with actual implementation for sandbox execution, behavioral data extraction, and reverse engineering.

* **src/adware_dashboard/api/routes.py**
  - Improve error handling and logging consistency for payload and deployment method retrieval.

* **src/adware_dashboard/api/utils.py**
  - Fix potential issue with partial updates not being handled correctly.

* **src/adware_dashboard/core/adware_manager.py**
  - Remove redundant error handling for missing payloads and deployment methods.

* **src/adware_dashboard/core/ai_integration.py**
  - Implement `_call_local_model` function to call a local AI model.

* **src/adware_dashboard/core/deployment_manager.py**
  - Replace placeholder comments for deployment logic with actual implementation for SSH, HTTP, FTP, and SMB deployment methods.

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