Fix digest command to support remote URLs

[digizeph]

Summary

Fixed the "digest" CLI command and get_sha256_digest() library function to work with remote URLs (HTTP, HTTPS, FTP, S3), not just local files.

Problem

The oneio digest command was failing with "No such file or directory" error when provided with a remote URL:

$ oneio digest https://example.com/file.tar.gz
digest error: IO error: No such file or directory (os error 2)

Root Cause

get_sha256_digest() in src/digest.rs was using std::fs::File::open() which only works with local file paths. It did not support remote URLs that the rest of the oneio library handles.

Solution

Changed get_sha256_digest() to use OneIo::new()?.get_reader_raw(path)? instead of std::fs::File::open(path), which:

• Supports both local files and remote URLs
• Uses raw reader without decompression to ensure the hash matches the actual file bytes

Changes

• src/digest.rs: Use OneIo::get_reader_raw() instead of std::fs::File::open()
• CHANGELOG.md: Added entry under "Unreleased" section

Verification

After the fix:

$ oneio digest https://github.com/bgpkit/asninfo/releases/download/v0.4.3/asninfo-universal-apple-darwin.tar.gz
9ee71b231224a8162d3a0f9b607b378336262bf38e1433d983d26823e2d3b16b

$ curl -sL https://github.com/bgpkit/asninfo/... | shasum -a 256
9ee71b231224a8162d3a0f9b607b378336262bf38e1433d983d26823e2d3b16b  -

Both hashes match, confirming the fix works correctly.

Related Issue

Fixes #69