Fix Content-Disposition header missing attachment prefix

[themachinehf]

Adds missing attachment directive to Content-Disposition headers in server.py to ensure browsers properly download files instead of attempting to display them inline. Fixes 4 instances in the file download endpoint.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between a11f68d and 43d8f56.

📒 Files selected for processing (1)

• server.py

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📝 Walkthrough

Walkthrough

The change modifies the Content-Disposition response header in the view_image endpoint of server.py. The header format is updated from filename="..." to attachment; filename="..." across all image-serving code paths, including rendered preview images (webp/jpeg formats), PNG outputs for both RGB and alpha channels, and the fallback file response handler. This change explicitly designates image responses as downloadable attachments rather than inline content.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: adding the 'attachment' directive to Content-Disposition headers to fix how browsers handle file downloads.
Description check	✅ Passed	The description is directly related to the changeset, explaining the purpose of adding the 'attachment;' directive to Content-Disposition headers across four instances in the file download endpoint.

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