feat: 重构代码架构 + 新增报表/跟单/输赢统计功能

- 拆分 HomeController → TransactionController, ReportWebController, FollowPlanController
- 新增 Service 层: TransactionService, ReportService, FollowPlanService
- pk10.php JS 抽离为 4 个独立文件 (sound/race/bet/poll)
- 前台新增报表查询页面 (/report) + 跟单计划页面 (/follow-plan)
- 后台新增跟单计划管理 + 用户输赢明细统计
- 封盘状态显示倒计时 (x:xx)
- 音效仅在开奖弹窗打开时播放
- 路由按模块分组整理
- autoload 支持 App\Services 命名空间

App/Controllers/Web/FollowPlanController.php

@@ -0,0 +1,44 @@
+<?php
+namespace App\Controllers\Web;
+
+use App\Core\WebBaseController;
+use App\Core\I18n;
+use App\Services\FollowPlanService;
+use Db\Database;
+
+class FollowPlanController extends WebBaseController {
+
+    public function followPlan() {
+        $this->checkWebLogin();
+        I18n::init();
+        $db = new Database();
+        $userId = $this->getCurrentUserId();
+        $user = $db->get('users', ['id','username','balance'], ['id' => $userId]);
+
+        $service = new FollowPlanService($db);
+        $game = $db->get('games', '*', ['code' => 'pk10', 'status' => 1]);
+        $gameId = $game['id'] ?? 0;
+
+        $plans = $service->getActivePlans($gameId);
+        $userFollows = $service->getUserFollowStatus($userId);
+        $summary = $service->getUserSummary($userId);
+
+        extract(compact('user', 'plans', 'userFollows', 'summary', 'game'));
+        include __DIR__ . '/../../Views/Web/follow_plan.php';
+    }
+
+    /**
+     * 切换跟单状态 API
+     */
+    public function toggleFollow() {
+        $this->checkWebLogin();
+        header('Content-Type: application/json');
+        $db = new Database();
+        $data = json_decode(file_get_contents('php://input'), true);
+        $planId = intval($data['plan_id'] ?? 0);
+
+        $service = new FollowPlanService($db);
+        $result = $service->toggleFollow($this->getCurrentUserId(), $planId);
+        echo json_encode($result);
+    }
+}