Migrated issue reporting functionality from GitLab to Gitea. Updated environment variables, dependencies, and configuration references to support Gitea. Introduced `GiteaClient` for communication with the Gitea API and refactored related code and tests to align with the new integration.
Replaced the bot's audio handling system by removing Lavaplayer dependencies and migrating to a Lavalink v4 node. Updated `MusicManager`, `TrackScheduler`, and related classes to utilize the `LavalinkClient`. Refactored playlist and track loading logic, task integrations, and event dispatch to integrate with the remote node. Deprecated the custom Udio source, preserving references for a future plugin port. Documented configuration and deployment details for the new audio architecture.
anthorob