fix: Bug where renaming the main folder did not update db path

settings where the ones of the previous folder.

app.go

@@ -523,8 +523,22 @@ func (a *App) startup(ctx context.Context) {
 	// Windows reinstall. It lives OUTSIDE the DB since we must know the path
 	// before opening it.
 	if custom := readDBPointer(dataDir); custom != "" {
-		a.dbPath = custom
-		usingDefault = false
+		// Portability guard: a pointer that is merely ANOTHER folder's default DB
+		// location ("…/<other>/data/opslog.db") means the portable folder was
+		// renamed or copied — its config.json still points at the original. Ignore
+		// it and use THIS folder's own data (and clear the stale pointer so it
+		// stops happening). A genuine custom location — another drive, a different
+		// filename — is NOT default-style, so it's still honoured.
+		stale := strings.EqualFold(filepath.Base(custom), "opslog.db") &&
+			strings.EqualFold(filepath.Base(filepath.Dir(custom)), "data") &&
+			!strings.EqualFold(filepath.Clean(filepath.Dir(custom)), filepath.Clean(dataDir))
+		if stale {
+			fmt.Printf("OpsLog: ignoring stale DB pointer %q (folder moved) — using %s\n", custom, a.dbPath)
+			_ = writeDBPointer(dataDir, "")
+		} else {
+			a.dbPath = custom
+			usingDefault = false
+		}
 	}
 	if err := os.MkdirAll(filepath.Dir(a.dbPath), 0o755); err != nil {
 		a.startupErr = "cannot create db folder: " + err.Error()
@@ -3174,6 +3188,15 @@ func (a *App) DeleteQSO(id int64) error {
 	return a.qso.Delete(a.ctx, id)
 }
 
+// DeleteQSOs removes several QSOs at once (multi-row selection). Returns the
+// number actually deleted.
+func (a *App) DeleteQSOs(ids []int64) (int64, error) {
+	if a.qso == nil {
+		return 0, fmt.Errorf("db not initialized")
+	}
+	return a.qso.DeleteMany(a.ctx, ids)
+}
+
 // QSLBulkUpdate carries the paper-QSL fields to apply to a selection. An empty
 // string leaves that field unchanged (so you can set only "received = Y + date"
 // without touching the sent side).