功能：送花/礼物系统完整开发

- 新增 Gift 模型和 gifts 数据表（7种默认花卉，各有图片/金币/魅力配置）
- 7张花卉图片生成并存放于 public/images/gifts/
- 名片弹窗新增送礼物 UI：图片选择列表、金币/魅力标注、数量选择
- sendFlower 控制器方法：按 gift_id 查找礼物、扣金币、加魅力、广播消息
- 聊天消息渲染支持显示礼物图片（含弹跳动画效果）
- 后台可在 gifts 表中管理花卉类型（名称、图标、图片、金币、魅力、排序、启禁用）

database/migrations/2026_02_27_005300_create_gifts_table.php

@@ -0,0 +1,57 @@
+<?php
+
+/**
+ * 文件功能：创建 gifts 礼物表并填充默认鲜花数据
+ *
+ * 礼物系统支持后台管理多种花/礼物类型，每种有不同的金币消耗和魅力增量。
+ * 图片存放在 public/images/gifts/ 目录下。
+ *
+ * @author ChatRoom Laravel
+ *
+ * @version 1.0.0
+ */
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * 创建 gifts 表并填充默认礼物数据
+     */
+    public function up(): void
+    {
+        Schema::create('gifts', function (Blueprint $table) {
+            $table->id();
+            $table->string('name', 50)->comment('礼物名称');
+            $table->string('emoji', 10)->comment('显示图标/emoji');
+            $table->string('image', 100)->nullable()->comment('礼物图片路径（相对 /images/gifts/）');
+            $table->unsignedInteger('cost')->default(0)->comment('消耗金币数');
+            $table->unsignedInteger('charm')->default(1)->comment('增加魅力值');
+            $table->unsignedTinyInteger('sort_order')->default(0)->comment('排序（越小越靠前）');
+            $table->boolean('is_active')->default(true)->comment('是否启用');
+            $table->timestamps();
+        });
+
+        // 填充默认鲜花数据（图片文件名与 sort_order 对应）
+        DB::table('gifts')->insert([
+            ['name' => '小雏菊',   'emoji' => '🌼', 'image' => 'daisy.png',     'cost' => 5,   'charm' => 1,   'sort_order' => 1, 'is_active' => true, 'created_at' => now(), 'updated_at' => now()],
+            ['name' => '玫瑰花',   'emoji' => '🌹', 'image' => 'rose.png',      'cost' => 10,  'charm' => 2,   'sort_order' => 2, 'is_active' => true, 'created_at' => now(), 'updated_at' => now()],
+            ['name' => '向日葵',   'emoji' => '🌻', 'image' => 'sunflower.png', 'cost' => 20,  'charm' => 5,   'sort_order' => 3, 'is_active' => true, 'created_at' => now(), 'updated_at' => now()],
+            ['name' => '樱花束',   'emoji' => '🌸', 'image' => 'sakura.png',    'cost' => 50,  'charm' => 12,  'sort_order' => 4, 'is_active' => true, 'created_at' => now(), 'updated_at' => now()],
+            ['name' => '满天星',   'emoji' => '💐', 'image' => 'bouquet.png',   'cost' => 100, 'charm' => 30,  'sort_order' => 5, 'is_active' => true, 'created_at' => now(), 'updated_at' => now()],
+            ['name' => '蓝色妖姬', 'emoji' => '🪻', 'image' => 'bluerose.png',  'cost' => 200, 'charm' => 66,  'sort_order' => 6, 'is_active' => true, 'created_at' => now(), 'updated_at' => now()],
+            ['name' => '钻石花冠', 'emoji' => '👑', 'image' => 'crown.png',     'cost' => 520, 'charm' => 188, 'sort_order' => 7, 'is_active' => true, 'created_at' => now(), 'updated_at' => now()],
+        ]);
+    }
+
+    /**
+     * 回滚：删除 gifts 表
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('gifts');
+    }
+};