kmp-logger-facade

Put one small logging object in the shared module between every call site and the logging library, so a chatty subsystem can be silenced in one line and the library can be replaced without touching call sites. Covers the muted-tag set, a level-as-a-value enum for callers that pick severity at runtime, and why a single direct import of the library anywhere defeats both. Use when one subsystem drowns the log, when…