Pull Request Checklist

Note to first-time contributors: Please open a discussion post in Discussions and describe your changes before submitting a pull request.

Before submitting, make sure you've checked the following:

• Target branch: Verified that the pull request targets the dev branch.
• Description: Added fallback behavior for chat initialization when sessionStorage data is missing.
• Changelog: Included changelog entry following Keep a Changelog.
• Documentation: No documentation updates required.
• Dependencies: No new dependencies added.
• Testing: Manually tested tab close/reopen and new chat scenarios.
• Agentic AI Code: This PR was manually written and tested.
• Code review: Self-review completed.
• Title Prefix: Verified correct fix prefix.

Changelog Entry

Description

• Added a call to setDefaults() inside the chat navigation logic (navigateHandler) to properly initialize the chat state when no previous session data exists in sessionStorage.

Added

• N/A

Changed

• Modified navigateHandler to include an else condition that triggers setDefaults() when sessionStorage does not contain chat input data.

Deprecated

• N/A

Removed

• N/A

Fixed

• Fixed an issue where reopening a tab or starting a new session without sessionStorage data caused chat parameters (e.g., model settings, filters) not to load properly.

Security

• N/A

Breaking Changes

• None

Additional Information

• When a user closes and reopens a tab, sessionStorage is cleared, which previously resulted in missing chat configuration (e.g., model, tools, filters).
• This update ensures that in such cases, default settings are reloaded automatically through setDefaults().

Screenshots or Videos

(Optional)
N/A

Contributor License Agreement

By submitting this pull request, I confirm that I have read and fully agree to the Contributor License Agreement (CLA), and I am providing my contributions under its terms.