- Implement OAuth2 authentication with US/EU region support
- Add file operations (list, upload, download, delete, rename, move, copy)
- Add folder operations (create, rename, move, delete)
- Enhance error handling with pCloud-specific retry logic
- Use correct API methods: GET for reads, POST for writes
- Implement direct upload approach for better performance
- Add exponential backoff for failed requests with 4xxx/5xxx classification
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