fixing db bugs

src/Storage/Repository.php

@@ -136,11 +136,11 @@ class Repository
         }
         if ($since) {
             $where[] = 'created_at >= ?';
-            $params[] = $since;
+            $params[] = str_replace('T', ' ', $since);
         }
         if ($until) {
             $where[] = 'created_at <= ?';
-            $params[] = $until;
+            $params[] = str_replace('T', ' ', $until);
         }
 
         $sql = "SELECT * FROM alerts";
@@ -207,11 +207,11 @@ class Repository
 
         if ($since) {
             $where[] = 'e.created_at >= ?';
-            $params[] = $since;
+            $params[] = str_replace('T', ' ', $since);
         }
         if ($until) {
             $where[] = 'e.created_at <= ?';
-            $params[] = $until;
+            $params[] = str_replace('T', ' ', $until);
         }
 
         if ($query === '*') {
@@ -382,22 +382,28 @@ class Repository
 
     public function getAuditLog(int $limit = 50): array
     {
-        return $this->db->pdo()->prepare(
+        $stmt = $this->db->pdo()->prepare(
             "SELECT * FROM audit_log ORDER BY created_at DESC LIMIT ?"
-        )->execute([$limit])->fetchAll();
+        );
+        $stmt->execute([$limit]);
+        return $stmt->fetchAll();
     }
 
     // --- Retention ---
 
     public function purgeOldData(int $logDays = 30, int $alertDays = 90): array
     {
-        $deletedLogs = $this->db->pdo()->prepare(
+        $stmt = $this->db->pdo()->prepare(
             "DELETE FROM log_entries WHERE created_at < datetime('now', ?)"
-        )->execute(['-' . $logDays . ' days'])->rowCount();
+        );
+        $stmt->execute(['-' . $logDays . ' days']);
+        $deletedLogs = $stmt->rowCount();
 
-        $deletedAlerts = $this->db->pdo()->prepare(
+        $stmt = $this->db->pdo()->prepare(
             "DELETE FROM alerts WHERE status = 'resolved' AND created_at < datetime('now', ?)"
-        )->execute(['-' . $alertDays . ' days'])->rowCount();
+        );
+        $stmt->execute(['-' . $alertDays . ' days']);
+        $deletedAlerts = $stmt->rowCount();
 
         $this->db->pdo()->exec("DELETE FROM rate_limiter WHERE window_start < " . (time() - 86400));