[andres-javier-lopez]

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[Copilot]

Pull Request Overview

This PR adds a new datetime node builder that provides current date and time information to prompts. The implementation includes helper functions for getting weekday and current time, a DateTimeNode class that extends PromptNode, and a DateTimeBuilder class for integrating the datetime functionality into the assistant core.

Key changes:

• Creates a new datetime builder module with timezone-aware date/time functionality
• Implements comprehensive unit tests with deterministic datetime mocking
• Updates the changelog to document the new feature

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
assistant_core/builder/datetime.py	Implements DateTimeNode and DateTimeBuilder classes with timezone support
tests/unit/test_datetime_builder.py	Comprehensive test suite with mocking for deterministic datetime testing
CHANGELOG.md	Documents the new datetime builder feature

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