[codex] Fix Deezer crypto import mismatch

[gaoyifan]

Summary

• switch Deezer's AES/Blowfish import from Cryptodome to Crypto
• align the Deezer utility with the package's declared pycryptodome dependency and the rest of the codebase
• fix the startup crash reported in issue [Question]: 在安装后，执行musicdl出现下图中的报错 #56 when musicdl imports all source modules eagerly

Root Cause

requirements.txt declares pycryptodome, which exposes the Crypto.* namespace. deezerutils.py imported Cryptodome.* instead, so the CLI crashed during module import before it could honor the user-selected music sources.

Fixes #56.

Validation

• uvx musicdl --version reproduced the ModuleNotFoundError: No module named 'Cryptodome' failure before the patch
• uvx --from /Users/yifan/tmp/tmp/repo musicdl --version succeeds after the patch

[Copilot]

Pull request overview

This PR fixes a startup-time import crash in the Deezer utility module by aligning its cryptography imports with the project’s declared pycryptodome dependency (Crypto.* namespace), resolving issue #56 where the CLI failed during eager module import.

Changes:

• Replace Cryptodome.Cipher imports with Crypto.Cipher in deezerutils.py to match pycryptodome.
• Prevent ModuleNotFoundError: No module named 'Cryptodome' on CLI startup when modules are imported eagerly.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.