fix: Parameter count mismatch in findByFolderIdPaginated and countByFolderId

- Move query.bindValue() calls AFTER query.prepare() in both methods
- Remove duplicate bindValue(':search') in findByFolderIdPaginated
- This fixes 'Parameter count mismatch' error when fetching paginated emails

src/db/dao/mailitemdao.cpp

@@ -476,12 +476,9 @@ int MailItemDao::countByFolderId(int folderId, const QString& searchFilter, bool
 {
     QSqlDatabase db = DatabaseManager::instance().database();
     QString sql = "SELECT COUNT(*) FROM MailCopy WHERE folderId = :folderId";
-    QSqlQuery query(db);
-    query.bindValue(":folderId", folderId);
 
     if (!searchFilter.isEmpty()) {
         sql += " AND (subject LIKE :search OR sender LIKE :search OR recipient LIKE :search OR bodyHtml LIKE :search)";
-        query.bindValue(":search", "%" + searchFilter + "%");
     }
     if (unreadOnly) {
         sql += " AND read = 0";
@@ -496,7 +493,13 @@ int MailItemDao::countByFolderId(int folderId, const QString& searchFilter, bool
         sql += " AND isPinned = 1";
     }
 
+    QSqlQuery query(db);
     query.prepare(sql);
+    query.bindValue(":folderId", folderId);
+
+    if (!searchFilter.isEmpty()) {
+        query.bindValue(":search", "%" + searchFilter + "%");
+    }
     if (!query.exec()) {
         qWarning() << "Failed to count mails by folder:" << query.lastError().text();
         return 0;
@@ -582,11 +585,8 @@ QVector<MailItem> MailItemDao::findByFolderIdPaginated(int folderId, int offset,
     QSqlDatabase db = DatabaseManager::instance().database();
     QString sql = "SELECT id, folderId, messageId, subject, sender, recipient, date, read, flagged, hasAttachment, size, fileId, uid, bodyHtml, toAddr, ccAddr, bccAddr, threadId, inReplyTo, \"references\", isPinned FROM MailCopy WHERE folderId = :folderId";
 
-    QSqlQuery query(db);
-
     if (!searchFilter.isEmpty()) {
         sql += " AND (subject LIKE :search OR sender LIKE :search OR recipient LIKE :search OR bodyHtml LIKE :search)";
-        query.bindValue(":search", "%" + searchFilter + "%");
     }
     if (unreadOnly) {
         sql += " AND read = 0";
@@ -603,6 +603,7 @@ QVector<MailItem> MailItemDao::findByFolderIdPaginated(int folderId, int offset,
 
     sql += " ORDER BY date DESC LIMIT :limit OFFSET :offset";
 
+    QSqlQuery query(db);
     query.prepare(sql);
     query.bindValue(":folderId", folderId);
     query.bindValue(":limit", limit);