jekkos 63083a0946 Fix: Sanitize image filenames to prevent thumbnail display issues (#4372) ...

When uploading item images with filenames containing spaces, the thumbnails fail to load due to Apache mod_rewrite rejecting URLs with spaces.

Changes:
- Modified upload_image() method to sanitize filenames by replacing spaces and special characters with underscores
- Uses regex to keep only alphanumeric, underscores, hyphens, and periods
- Preserves original filename in 'orig_name' field for reference
- Fixes issue where thumbnail URLs would fail with 'AH10411: Rewritten query string contains control characters or spaces'

Example: 'banana marsmellow.jpg' becomes 'banana_marsmellow.jpg'

Fixes: #4372

2026-03-06 17:09:52 +01:00

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