Standardize Terminology: Replace 'environment' with 'deployment'

[ritwik-g]

Overview

This issue tracks the standardization of terminology across the codebase, specifically replacing all instances of 'environment' with 'deployment' for consistency.

Background

Currently, the codebase uses 'environment' in the internal API and 'deployment' in the CLI interface and user-facing messages. This inconsistency can lead to confusion for developers and users.

Detailed Requirements

Please refer to the detailed requirements and tasks in: standardize-terminology.md

Implementation Guidelines

1. Follow the tasks outlined in the document
2. Create a single, focused PR for this change
3. Ensure comprehensive test coverage
4. Update all relevant documentation

Success Criteria

• All instances of 'environment' replaced with 'deployment' in code and docs
• All tests passing
• Documentation updated to reflect new terminology
• No breaking changes to functionality

Note

This is a good first issue for contributors who want to get familiar with the codebase. The changes are well-defined and mostly mechanical, making it a great starting point.