[TASK 3.3.6] Allow batch update of multiple assets at once

[catapam]

Enable users to update multiple assets in their portfolio simultaneously.

Acceptance Criteria:

• [ ] Users can select and update multiple assets at once.
• [ ] The batch update process is efficient and user-friendly.

Steps:

1. Design the batch update interface for selecting multiple assets.
2. Implement backend logic to handle batch updates.
3. Test the batch update process for accuracy and performance.

Linked Issues:

• 7

• 10

• Documentation: Batch Asset Update Documentation

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