Better Commands, Reliable Loyalty and a Clearer Dashboard

New module:variable syntax for commands, with automatic migration of existing reply templates.
Added the watchtime chat command and corrected offline watchtime handling.
Improved point transfers and grants, preserved large balance precision, and added a streamer earnings toggle.
Improved bot authorization and preserved the Twitch permissions needed for watchtime.
Added Spotify setup guidance, confirmation dialogs, and clearer song request errors.
Improved dashboard navigation, dropdowns, toggle stability, and recovery of command drafts and module saves.
Reduced first-message processing latency and improved ingress discovery and shard recovery during deployments.