In copyFileToLocalStorage(), streams are not closed safely and the output stream is closed twice.

• Double-close: outputStream is closed inside outputStream.use { ... }, then outputStream.close() is called again. The second close is redundant and can cause issues.
• Leak on error: inputStream is not used inside a use block. If inputStream?.copyTo(fileOut) throws, the input stream is never closed.

Suggested fix: Use inputStream?.use { it.copyTo(fileOut) } so the input stream is always closed, and remove the explicit inputStream?.close() and outputStream.close() calls so only use is responsible for closing.