diff --git a/updates/0.30/ver_0.324.zip b/updates/0.30/ver_0.324.zip
new file mode 100644
index 0000000..5029e77
Binary files /dev/null and b/updates/0.30/ver_0.324.zip differ
diff --git a/updates/0.30/ver_0.324_files.txt b/updates/0.30/ver_0.324_files.txt
new file mode 100644
index 0000000..55ac504
--- /dev/null
+++ b/updates/0.30/ver_0.324_files.txt
@@ -0,0 +1,7 @@
+F: ../autoload/.DS_Store
+F: ../autoload/front/.DS_Store
+F: ../logs/2024-01-05-order-set-as-paid.txt
+F: ../logs/2024-08-20-order-set-as-paid.txt
+F: ../logs/apilo.txt
+F: ../logs/logs-db-2024-08-31.log
+F: ../templates/.DS_Store
\ No newline at end of file
diff --git a/updates/0.30/ver_0.324_manifest.json b/updates/0.30/ver_0.324_manifest.json
new file mode 100644
index 0000000..95d1f38
--- /dev/null
+++ b/updates/0.30/ver_0.324_manifest.json
@@ -0,0 +1,79 @@
+{
+    "changelog":  "NEW - system kolejki zadań cron (DB), priorytetowe przetwarzanie, retry/backoff, ochrona endpointu cron",
+    "version":  "0.324",
+    "files":  {
+                  "added":  [
+                                "autoload/Domain/CronJob/CronJobProcessor.php",
+                                "autoload/Domain/CronJob/CronJobRepository.php",
+                                "autoload/Domain/CronJob/CronJobType.php"
+                            ],
+                  "deleted":  [
+                                  "autoload/.DS_Store",
+                                  "autoload/front/.DS_Store",
+                                  "logs/2024-01-05-order-set-as-paid.txt",
+                                  "logs/2024-08-20-order-set-as-paid.txt",
+                                  "logs/apilo.txt",
+                                  "logs/logs-db-2024-08-31.log",
+                                  "templates/.DS_Store"
+                              ],
+                  "modified":  [
+                                   "autoload/Domain/Order/OrderAdminService.php",
+                                   "autoload/admin/App.php",
+                                   "autoload/api/ApiRouter.php",
+                                   "autoload/front/App.php",
+                                   "cron.php"
+                               ]
+              },
+    "checksum_zip":  "sha256:63237e6bdb2ed2c2632cebb45431b26ecd5717b129aa2180540ebce0c3bff77f",
+    "sql":  [
+                "-- System kolejki zadań cron",
+                "-- Wersja: 0.324",
+                "CREATE TABLE IF NOT EXISTS pp_cron_jobs (",
+                "    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,",
+                "    job_type VARCHAR(50) NOT NULL,",
+                "    status ENUM(\u0027pending\u0027,\u0027processing\u0027,\u0027completed\u0027,\u0027failed\u0027,\u0027cancelled\u0027) NOT NULL DEFAULT \u0027pending\u0027,",
+                "    priority TINYINT UNSIGNED NOT NULL DEFAULT 100,",
+                "    payload TEXT NULL,",
+                "    result TEXT NULL,",
+                "    attempts SMALLINT UNSIGNED NOT NULL DEFAULT 0,",
+                "    max_attempts SMALLINT UNSIGNED NOT NULL DEFAULT 10,",
+                "    last_error VARCHAR(500) NULL,",
+                "    scheduled_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,",
+                "    started_at DATETIME NULL,",
+                "    completed_at DATETIME NULL,",
+                "    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,",
+                "    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,",
+                "    INDEX idx_status_priority_scheduled (status, priority, scheduled_at),",
+                "    INDEX idx_job_type (job_type),",
+                "    INDEX idx_status (status)",
+                ") ENGINE=InnoDB DEFAULT CHARSET=utf8;",
+                "CREATE TABLE IF NOT EXISTS pp_cron_schedules (",
+                "    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,",
+                "    job_type VARCHAR(50) NOT NULL UNIQUE,",
+                "    interval_seconds INT UNSIGNED NOT NULL,",
+                "    priority TINYINT UNSIGNED NOT NULL DEFAULT 100,",
+                "    max_attempts SMALLINT UNSIGNED NOT NULL DEFAULT 3,",
+                "    payload TEXT NULL,",
+                "    enabled TINYINT(1) NOT NULL DEFAULT 1,",
+                "    last_run_at DATETIME NULL,",
+                "    next_run_at DATETIME NULL,",
+                "    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,",
+                "    INDEX idx_enabled_next_run (enabled, next_run_at)",
+                ") ENGINE=InnoDB DEFAULT CHARSET=utf8;",
+                "-- Harmonogramy zadań",
+                "INSERT INTO pp_cron_schedules (job_type, interval_seconds, priority, max_attempts) VALUES",
+                "(\u0027apilo_token_keepalive\u0027, 240, 10, 3),",
+                "(\u0027apilo_send_order\u0027, 60, 40, 10),",
+                "(\u0027apilo_product_sync\u0027, 600, 100, 3),",
+                "(\u0027apilo_pricelist_sync\u0027, 3600, 100, 3),",
+                "(\u0027apilo_status_poll\u0027, 600, 100, 3),",
+                "(\u0027price_history\u0027, 86400, 100, 3),",
+                "(\u0027order_analysis\u0027, 600, 100, 3),",
+                "(\u0027trustmate_invitation\u0027, 600, 200, 3),",
+                "(\u0027google_xml_feed\u0027, 3600, 200, 3);"
+            ],
+    "date":  "2026-02-27",
+    "directories_deleted":  [
+
+                            ]
+}
\ No newline at end of file
diff --git a/updates/0.30/ver_0.324_sql.txt b/updates/0.30/ver_0.324_sql.txt
new file mode 100644
index 0000000..73765e3
--- /dev/null
+++ b/updates/0.30/ver_0.324_sql.txt
@@ -0,0 +1,45 @@
+-- System kolejki zadań cron
+-- Wersja: 0.324
+CREATE TABLE IF NOT EXISTS pp_cron_jobs (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    job_type VARCHAR(50) NOT NULL,
+    status ENUM('pending','processing','completed','failed','cancelled') NOT NULL DEFAULT 'pending',
+    priority TINYINT UNSIGNED NOT NULL DEFAULT 100,
+    payload TEXT NULL,
+    result TEXT NULL,
+    attempts SMALLINT UNSIGNED NOT NULL DEFAULT 0,
+    max_attempts SMALLINT UNSIGNED NOT NULL DEFAULT 10,
+    last_error VARCHAR(500) NULL,
+    scheduled_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    started_at DATETIME NULL,
+    completed_at DATETIME NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    INDEX idx_status_priority_scheduled (status, priority, scheduled_at),
+    INDEX idx_job_type (job_type),
+    INDEX idx_status (status)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+CREATE TABLE IF NOT EXISTS pp_cron_schedules (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    job_type VARCHAR(50) NOT NULL UNIQUE,
+    interval_seconds INT UNSIGNED NOT NULL,
+    priority TINYINT UNSIGNED NOT NULL DEFAULT 100,
+    max_attempts SMALLINT UNSIGNED NOT NULL DEFAULT 3,
+    payload TEXT NULL,
+    enabled TINYINT(1) NOT NULL DEFAULT 1,
+    last_run_at DATETIME NULL,
+    next_run_at DATETIME NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    INDEX idx_enabled_next_run (enabled, next_run_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+-- Harmonogramy zadań
+INSERT INTO pp_cron_schedules (job_type, interval_seconds, priority, max_attempts) VALUES
+('apilo_token_keepalive', 240, 10, 3),
+('apilo_send_order', 60, 40, 10),
+('apilo_product_sync', 600, 100, 3),
+('apilo_pricelist_sync', 3600, 100, 3),
+('apilo_status_poll', 600, 100, 3),
+('price_history', 86400, 100, 3),
+('order_analysis', 600, 100, 3),
+('trustmate_invitation', 600, 200, 3),
+('google_xml_feed', 3600, 200, 3);
\ No newline at end of file
diff --git a/updates/changelog.php b/updates/changelog.php
index fddb32a..192c206 100644
--- a/updates/changelog.php
+++ b/updates/changelog.php
@@ -1,23 +1,29 @@
+<b>ver. 0.324 - 27.02.2026</b><br />
+NEW - system kolejki zadań cron (DB), priorytetowe przetwarzanie, retry/backoff, ochrona endpointu cron
+<hr>
+<b>ver. 0.324 - 27.02.2026</b><br />
+NEW - system kolejki zadań cron (DB), priorytetowe przetwarzanie, retry/backoff, ochrona endpointu cron
+<hr>
 <b>ver. 0.323 - 24.02.2026</b><br />
 FIX - refactor importu zdjec w shopPRO import (walidacja HTTP, curl timeouty, logi), FIX - saveCustomFields tylko przy jawnym podaniu, FIX - delete() czysci custom_fields, FIX - sciezka upload w API, NEW - trwale usuwanie produktow z archiwum
 <hr>
 <b>ver. 0.322 - 24.02.2026</b><br />
-FIX - custom_fields: jawne mapowanie kluczy w ProductRepository, spĂłjne !empty w ProductsApiController
+FIX - custom_fields: jawne mapowanie kluczy w ProductRepository, spĂłjne !empty w ProductsApiController
 <hr>
 <b>ver. 0.321 - 24.02.2026</b><br />
-NEW - API: obsługa custom_fields w create/update produktu
+NEW - API: obsługa custom_fields w create/update produktu
 <hr>
 <b>ver. 0.320 - 24.02.2026</b><br />
-NEW - API: endpoint ensure_producer (znajdĹş lub utwĂłrz producenta); GET product zwraca producer_name
+NEW - API: endpoint ensure_producer (znajdĹş lub utwĂłrz producenta); GET product zwraca producer_name
 <hr>
 <b>ver. 0.319 - 24.02.2026</b><br />
-FIX - usunięcie shopPRO eksportu produktów; API produktu: dodano custom_fields i security_information
+FIX - usunięcie shopPRO eksportu produktów; API produktu: dodano custom_fields i security_information
 <hr>
 <b>ver. 0.318 - 24.02.2026</b><br />
-NEW - shopPRO export produktĂłw + API endpoints (ensure_attribute, ensure_attribute_value, upload_image)
+NEW - shopPRO export produktĂłw + API endpoints (ensure_attribute, ensure_attribute_value, upload_image)
 <hr>
 <b>ver. 0.317 - 23.02.2026</b><br />
-FIX - klucz API: fix zapisu (brakowalo w whiteliście), przycisk Generuj losowy klucz, ulepszony routing API
+FIX - klucz API: fix zapisu (brakowalo w whiteliście), przycisk Generuj losowy klucz, ulepszony routing API
 <hr>
 <b>ver. 0.316 - 23.02.2026</b><br />
 FIX - migracja brakujacej kolumny type w pp_shop_products_custom_fields
@@ -26,16 +32,16 @@ FIX - migracja brakujacej kolumny type w pp_shop_products_custom_fields
 FIX - PDOException w listowaniu atrybutow admin (SQLSTATE HY093)
 <hr>
 <b>ver. 0.314 - 23.02.2026</b><br />
-FIX - naprawa globalnej wyszukiwarki admin (Content-Type, Cache-Control, POST, try/catch), NEW - title strony z numerem zamĂłwienia
+FIX - naprawa globalnej wyszukiwarki admin (Content-Type, Cache-Control, POST, try/catch), NEW - title strony z numerem zamĂłwienia
 <hr>
 <b>ver. 0.313 - 23.02.2026</b><br />
-FIX - sync płatności Apilo (int cast na apilo_order_id PPxxxxxx dawał 0) + logowanie decyzji sync do pp_log
+FIX - sync płatności Apilo (int cast na apilo_order_id PPxxxxxx dawał 0) + logowanie decyzji sync do pp_log
 <hr>
 <b>ver. 0.312 - 23.02.2026</b><br />
-FIX - krytyczne bugi integracji Apilo: curl_getinfo po curl_close, nieskończona pętla wysyłki, ceny 0.00 PLN, walidacja cen
+FIX - krytyczne bugi integracji Apilo: curl_getinfo po curl_close, nieskończona pętla wysyłki, ceny 0.00 PLN, walidacja cen
 <hr>
 <b>ver. 0.311 - 23.02.2026</b><br />
-FIX - race condition callback płatności Apilo, persistence filtrów tabel admin, poprawki cen zamówień
+FIX - race condition callback płatności Apilo, persistence filtrów tabel admin, poprawki cen zamówień
 <hr>
 <b>ver. 0.310 - 23.02.2026</b><br />
 NEW - Zakladka Logi w sekcji Integracje (podglad pp_log z paginacja, sortowaniem, filtrami)
diff --git a/updates/versions.php b/updates/versions.php
index 177ec24..145b27d 100644
--- a/updates/versions.php
+++ b/updates/versions.php
@@ -1,5 +1,5 @@
 <?
-$current_ver = 323;
+$current_ver = 324;
 
 for ($i = 1; $i <= $current_ver; $i++)
 {