vibsin9322 9ba38e69c2 Fix file upload path issues with Korean filenames
- Replace complex filename sanitization with simple timestamp-based naming
- Generate safe filenames using timestamp and random strings
- Store original filename in database, use safe names in storage
- Remove Korean characters and special characters from storage paths
- Preserve file extensions for proper file type handling

This resolves: "Invalid key" errors with Korean filenames in Supabase Storage

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-08-19 14:16:52 +09:00
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