特性：支持在后台配置结婚离婚冷静期规则，并优化冷却时间文本提示；修复全局的离婚公告事件对象接收名称不匹配问题

database/migrations/2026_03_01_181247_add_divorce_cooldown_to_sysparam.php

@@ -0,0 +1,40 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        DB::table('sysparam')->insertOrIgnore([
+            [
+                'alias' => 'divorce_mutual_cooldown',
+                'guidetxt' => '协议离婚冷静期(天)',
+                'body' => '70'
+            ],
+            [
+                'alias' => 'divorce_forced_cooldown',
+                'guidetxt' => '强制离婚冷静期(天)',
+                'body' => '70'
+            ],
+            [
+                'alias' => 'divorce_auto_cooldown',
+                'guidetxt' => '系统强制离婚冷静期(天)',
+                'body' => '70'
+            ],
+        ]);
+    }
+
+    public function down(): void
+    {
+        DB::table('sysparam')->whereIn('alias', [
+            'divorce_mutual_cooldown',
+            'divorce_forced_cooldown',
+            'divorce_auto_cooldown'
+        ])->delete();
+    }
+};