Refactored logging system to require a TAG as first argument on all
LOG_* macros, enabling per-subsystem log filtering and cleaner output.
Each subsystem now defines its own TAG (e.g. "BellEngine", "Player").
Also overhauled Logging.hpp/cpp with improved level control and output.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
