Fixed 401 Unauthorized errors in blog validation/submission modal:
- Added Authorization Bearer token to /api/blog/admin/:id fetch (line 153)
- Added Authorization Bearer token to /api/submissions/by-blog-post/:id fetch (line 162)
- Added Authorization Bearer token to /api/submissions/:id/export fetch (line 818)
All admin API endpoints require authentication. The submission modal
was making unauthenticated requests, causing 401 errors when trying
to load article data or export submission packages.
The 404 error on by-blog-post is expected when no submission exists
for that blog post ID yet.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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