feat(sqlite): add default pragmas to dsn

internal/agent/controller/app/app_handler.go

@@ -28,6 +28,8 @@ import (
 	"github.com/pkg/errors"
 )
 
+const defaultSQLiteParams = "?_pragma=foreign_keys(1)&_pragma=journal_mode(WAL)&_txlock=immediate"
+
 func (c *Controller) getHandlerOptions(ctx context.Context, appKey string, specs *spec.Spec) ([]edgeHTTP.HandlerOptionFunc, error) {
 	dataDir, err := c.ensureAppDataDir(ctx, appKey)
 	if err != nil {
@@ -35,7 +37,7 @@ func (c *Controller) getHandlerOptions(ctx context.Context, appKey string, specs
 	}
 
 	dbFile := filepath.Join(dataDir, appKey+".sqlite")
-	db, err := sqlite.Open(dbFile)
+	db, err := sqlite.Open(dbFile + defaultSQLiteParams)
 	if err != nil {
 		return nil, errors.Wrapf(err, "could not open database file '%s'", dbFile)
 	}