printLoadedConf modified to only print explicitly set config values (via env or config file)

internal/config/debug.go

@@ -24,17 +24,21 @@ func printEnv() {
 	}
 }
 
-// printLoadedConfig logs every key Viper has loaded, with its value and type,
-// at debug level.
+// printLoadedConfig logs every key set by the config file or an environment
+// variable (see isExplicitlySet), with its value and type, at debug level.
 func printLoadedConfig() {
 	slog.Debug("Loaded config:")
 	keys := viper.AllKeys()
 	for i := range keys {
 		k := keys[i]
-		v := viper.Get(k)
-		t := reflect.TypeOf(v)
-		slog.Debug(
-			"\t" + k + " = " + fmt.Sprintf("%#v", v) + " <" + t.Kind().String() + ">")
+		if isExplicitlySet(k) {
+			v := viper.Get(k)
+			t := reflect.TypeOf(v)
+			slog.Debug(
+				"\t" + k + " = " + fmt.Sprintf("%#v", v) +
+					" <" + t.Kind().String() + ">",
+			)
+		}
 	}
 }