[TASK 3.2.7] Implement bulk asset import from CSV file

[catapam]

Allow users to upload a CSV file containing multiple assets, which can be added to their portfolio in bulk.

Acceptance Criteria:

• [ ] Users can upload a CSV file to add multiple assets at once.
• [ ] The system validates and processes the CSV file accurately.

Steps:

1. Design the CSV import feature in the asset addition form.
2. Implement logic to process and validate the CSV file.
3. Add the assets from the CSV to the user's portfolio.

Linked Issues:

• 7

• 9

• Documentation: Bulk Asset Import Documentation

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