all: sync with master; upd chlog

internal/confmigrate/v1.go

@@ -0,0 +1,35 @@
+package confmigrate
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/AdguardTeam/golibs/errors"
+	"github.com/AdguardTeam/golibs/log"
+)
+
+// migrateTo1 performs the following changes:
+//
+//	# BEFORE:
+//	# …
+//
+//	# AFTER:
+//	'schema_version': 1
+//	# …
+//
+// It also deletes the unused dnsfilter.txt file, since the following versions
+// store filters in data/filters/.
+func (m *Migrator) migrateTo1(diskConf yobj) (err error) {
+	diskConf["schema_version"] = 1
+
+	dnsFilterPath := filepath.Join(m.workingDir, "dnsfilter.txt")
+	log.Printf("deleting %s as we don't need it anymore", dnsFilterPath)
+	err = os.Remove(dnsFilterPath)
+	if err != nil && !errors.Is(err, os.ErrNotExist) {
+		log.Info("warning: %s", err)
+
+		// Go on.
+	}
+
+	return nil
+}