### Feature Request: Dynamic YouTube decryption auto-repair system

Problem Description

Is your feature request related to a problem?
Google regularly updates YouTube's web scripts and decipher algorithms (such as n-signature and player JS rules), which can break audio stream extraction in SimpMusic. Currently, resolving these playback errors requires waiting for new app builds or manual releases to update the underlying decryption logic.

Proposed Solution

Describe the solution you'd like
I would like to request an automated, background-updating decryption system similar to the mechanism used in ArchiveTune:

• A background process that periodically refreshes and pulls the latest YouTube decryption/decipher parameters (e.g., every 6 hours).
• An automatic fallback trigger that fetches updated decryption code immediately when a track fails to play, repairing broken streams on the fly without needing an app update.

Alternative Solutions

Describe alternatives you've considered
Waiting for manual app patches or reinstalling updated builds whenever YouTube alters its backend decipher behavior.

Additional Context

Adding a self-healing decryption system will keep stream extraction stable and prevent playback breakage whenever Google updates YouTube's web behavior. Thanks for all your hard work on SimpMusic!

The issue names no files, tests, or entry points. Start by locating the existing YouTube stream-extraction and decryption code, then define the update source, refresh schedule, and playback-failure fallback. Done means decryption updates can repair broken playback without a new app build, with the behavior validated in the relevant playback tests.