feat(conga,lagoon): River and GORM log through diary components

- River's logger is diary.For("river") (warn by default), conga's own lines diary.For("conga"); an app-published logger still wins
- GORM logs through logger.NewSlogLogger(diary.For("db")): warn level, record-not-found ignored, parameterized SQL traces only at verbosity 3
- Smoke tests TestRiverLoggerUsesDiarySmoke and TestGormLoggerUsesDiarySmoke

modules/conga/worker.go

@@ -81,7 +81,7 @@ func StartWorker(ctx context.Context, app *backpack.App, plugins []party.Plugin,
 		return nil, ErrNoDatabase
 	}
 	s := settingsFromApp(app)
-	log := loggerFromApp(app)
+	log := riverLogger(app)
 	periodic, table, err := periodicJobs(app, plugins)
 	if err != nil {
 		return nil, err