refactor(app): 优化邮件模板

database/migrations/2025_09_26_112046_alert_supply_demands_table.php

@@ -1,33 +0,0 @@
-<?php
-
-use Illuminate\Database\Migrations\Migration;
-use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
-
-return new class extends Migration
-{
-    /**
-     * Run the migrations.
-     *
-     * @return void
-     */
-    public function up()
-    {
-        Schema::table('supply_demands', function (Blueprint $table) {
-            // 标签
-            $table->string('tags')->nullable()->comment('标签');
-        });
-    }
-
-    /**
-     * Reverse the migrations.
-     *
-     * @return void
-     */
-    public function down()
-    {
-        Schema::table('supply_demands', function (Blueprint $table) {
-            //
-        });
-    }
-};