fix(planting): 移除个人最大认种数量限制

删除 MAX_TREES_PER_USER = 1000 的限制和 checkRiskControl 方法

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/planting-service/src/application/services/planting-application.service.ts

@@ -24,9 +24,6 @@ import {
   FailureStage,
 } from '../../infrastructure/persistence/repositories/payment-compensation.repository';
 
-// 个人最大认种数量限制
-const MAX_TREES_PER_USER = 1000;
-
 export interface CreateOrderResult {
   orderNo: string;
   treeCount: number;
@@ -84,9 +81,6 @@ export class PlantingApplicationService {
   ): Promise<CreateOrderResult> {
     this.logger.log(`Creating order for user ${userId}, treeCount: ${treeCount}`);
 
-    // 风控检查
-    await this.checkRiskControl(userId, treeCount);
-
     // 检查余额
     const balance = await this.walletService.getBalance(userId.toString());
     const requiredAmount = treeCount * PRICE_PER_TREE;
@@ -464,22 +458,6 @@ export class PlantingApplicationService {
     return { success: true };
   }
 
-  /**
-   * 风控检查
-   */
-  private async checkRiskControl(
-    userId: bigint,
-    treeCount: number,
-  ): Promise<void> {
-    // 检查用户限购
-    const existingCount = await this.orderRepository.countTreesByUserId(userId);
-    if (existingCount + treeCount > MAX_TREES_PER_USER) {
-      throw new Error(
-        `超过个人最大认种数量限制: 已认种 ${existingCount} 棵, 本次 ${treeCount} 棵, 上限 ${MAX_TREES_PER_USER} 棵`,
-      );
-    }
-  }
-
   /**
    * 构建 Outbox 事件数据
    *