feat(pargar): prune inbound logs via MySQL INSERT trigger

Run one-time overflow cleanup on migrate and keep mande/document success
rows capped at 2000 with an AFTER INSERT trigger, without cron or manual SQL.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Services/DatabaseLogPruneService.php

@@ -148,12 +148,17 @@ class DatabaseLogPruneService
      *
      * @return array{mande: int, document: int}
      */
-    public function prunePargarInboundOverflow(int $maxDeletePerType = 0): array
+    /** هر بار حداکثر — برای afterResponse؛ تریگر MySQL هم LIMIT 4000 دارد */
+    private const PARAGAR_PRUNE_BATCH = 4000;
+
+    public function prunePargarInboundOverflow(?int $maxDeletePerType = null): array
     {
         if (! Schema::hasTable('pargar_sync_logs')) {
             return ['mande' => 0, 'document' => 0];
         }
 
+        $batch = $maxDeletePerType ?? self::PARAGAR_PRUNE_BATCH;
+
         ignore_user_abort(true);
         if (function_exists('set_time_limit')) {
             @set_time_limit(180);
@@ -168,8 +173,8 @@ class DatabaseLogPruneService
 
         try {
             return [
-                'mande' => $this->pruneOldestSuccessBeyond(PargarSyncService::TYPE_MANDE, $maxDeletePerType),
-                'document' => $this->pruneOldestSuccessBeyond(PargarSyncService::TYPE_DOCUMENT, $maxDeletePerType),
+                'mande' => $this->pruneOldestSuccessBeyond(PargarSyncService::TYPE_MANDE, $batch),
+                'document' => $this->pruneOldestSuccessBeyond(PargarSyncService::TYPE_DOCUMENT, $batch),
             ];
         } finally {
             if ($locked === true) {
@@ -197,11 +202,11 @@ class DatabaseLogPruneService
             ->where('id', '<=', $cutoffId)
             ->orderBy('id');
 
-        if ($maxDelete > 0) {
-            return (int) $query->limit($maxDelete)->delete();
+        if ($maxDelete <= 0) {
+            $maxDelete = self::PARAGAR_PRUNE_BATCH;
         }
 
-        return (int) $query->delete();
+        return (int) $query->limit($maxDelete)->delete();
     }
 
     private function ensureTypeStatusIndex(): void
@@ -224,7 +229,7 @@ class DatabaseLogPruneService
     private function acquirePruneLock(): ?bool
     {
         try {
-            $row = DB::selectOne('SELECT GET_LOCK(?, 0) AS l', ['khanegi_pargar_inbound_prune']);
+            $row = DB::selectOne('SELECT GET_LOCK(?, 3) AS l', ['khanegi_pargar_inbound_prune']);
 
             return (int) ($row->l ?? 0) === 1;
         } catch (\Throwable) {