Problem:
- Left/right arrows for photo navigation showed 'No preview'
- navigatePhoto() missing user_id parameter in stream API call
- img.src used old format: /api/v2/files/{file_uuid}/stream
Solution:
- Modified navigatePhoto() to include user_id
- Changed to: /api/v2/files/{user_id}/{file_uuid}/stream
- Get user_id from localStorage (tree_user)
Result:
- Photo navigation arrows now work correctly ✅
- Can browse through jpg/png/gif images in detail panel ✅
- Position indicator (1/2371) shows correct count ✅
Files:
- src/page.html (navigatePhoto function)
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