TIFF images not displayed in browser

[jedrazb]

Description

TIFF images embedded in DOCX files are correctly extracted and their MIME type (image/tiff) is recognized, but browsers cannot natively render TIFF format. These images appear as broken image icons.

Current Behavior

TIFF images show as broken/missing image placeholders in the editor.

Expected Behavior

TIFF images should be converted to a browser-compatible format (PNG or JPEG) at load time and displayed correctly.

Technical Notes

• Recognition: unzip.ts maps .tif/.tiff → image/tiff, imageParser.ts getMimeType() also handles both extensions
• Missing: No client-side TIFF-to-PNG/JPEG conversion
• Options: Use a library like utif.js or tiff.js for decoding, then render to canvas and export as PNG data URL
• Scope: Only affects display — the original TIFF binary should be preserved for roundtrip fidelity

Steps to Reproduce

1. Open a DOCX containing a TIFF format image
2. Image area shows broken image icon or blank space

[erophames]

This logic may also need to be placed into the paste logic.