Currently, when viewing files in the "Project Knowledge" section, images are displayed only as generic icons with filenames (e.g., IMG_9630.png). There is no way to preview the actual image content before deciding to delete it. This creates a significant risk of accidentally deleting the wrong image, especially when managing multiple uploads with similar or non-descriptive filenames.

I request a preview feature for images in the Project Knowledge panel with the following specifics:

• Thumbnails: Display small thumbnail previews of the images instead of just generic icons so users can instantly identify the content.
• Click-to-Open: Allow users to tap or click an image to open a larger preview window before confirming any action.
• Confirmation Dialog: When clicking the delete (X) button on an image, show a confirmation popup where the image preview is clearly visible, asking "Are you sure you want to delete this specific image?"

Why this matters: For users who upload many reference images (photos, diagrams, screenshots) to guide Lumo's responses, being able to visually verify content before deletion is critical. It prevents accidental data loss and improves confidence when managing project context. This is a basic usability standard seen in most file management systems (like Photos or Drive) and should apply here too.