refactor: centralize protobuf and remove go-zero

shared/logging/context.go

@@ -0,0 +1,13 @@
+// Package logging centralizes application logging without coupling services to a framework.
+package logging
+
+import (
+	"context"
+	"log/slog"
+)
+
+// Context returns the process logger. The context parameter keeps call sites ready for
+// a future trace-aware handler without imposing one on every service today.
+func Context(_ context.Context) *slog.Logger {
+	return slog.Default()
+}