feat(processor): 添加循环名称自动生成的配置开关

新增环境变量 ENABLE_LOOP_NAME_AUTO_GENERATION 用于控制当缓存未命中时是否自动生成循环名称。当设置为 false 时，系统将不再生成 [类型-地址-回路] 格式的备用名称，而是直接返回 null。更新了配置文件、处理器逻辑并添加了相应的单元测试。

bls-rcu-action-backend/tests/feature_flag_loop_name.test.js

@@ -0,0 +1,47 @@
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
+import { buildRowsFromPayload } from '../src/processor/index.js';
+import { config } from '../src/config/config.js';
+
+describe('Feature Toggle: Loop Name Auto Generation', () => {
+  const basePayload = {
+    ts_ms: 1700000000000,
+    hotel_id: 1001,
+    room_id: '8001',
+    device_id: 'dev_001',
+    direction: '上报',
+    cmd_word: '0x36',
+    frame_id: 1,
+    udp_raw: '00',
+    sys_lock_status: 0,
+    report_count: 0,
+    fault_count: 0,
+    device_list: [
+      { dev_type: 1, dev_addr: 10, dev_loop: 1, dev_data: 100 }
+    ]
+  };
+
+  let originalConfigValue;
+
+  beforeEach(() => {
+    originalConfigValue = config.enableLoopNameAutoGeneration;
+  });
+
+  afterEach(() => {
+    config.enableLoopNameAutoGeneration = originalConfigValue;
+  });
+
+  it('should generate loop_name when flag is true', () => {
+    config.enableLoopNameAutoGeneration = true;
+    const rows = buildRowsFromPayload(basePayload);
+    // Expect format: [1强电继电器（输出状态）-10-1]
+    // The exact name depends on the map, but it should contain brackets and numbers
+    expect(rows[0].loop_name).toBeDefined();
+    expect(rows[0].loop_name).toMatch(/^\[1.*-10-1\]$/);
+  });
+
+  it('should NOT generate loop_name when flag is false', () => {
+    config.enableLoopNameAutoGeneration = false;
+    const rows = buildRowsFromPayload(basePayload);
+    expect(rows[0].loop_name).toBeNull();
+  });
+});

bls-rcu-action-backend/tests/processor.test.js

@@ -223,7 +223,7 @@ describe('Processor Logic', () => {
 
     const rows = buildRowsFromPayload(payload);
     expect(rows[0].loop_name).toBe('Main Chandelier');
-    // dev_type 1 is 'Dev_Host_HVout'
-    expect(rows[1].loop_name).toBe('[1Dev_Host_HVout-10-2]');
+    // dev_type 1 is '强电继电器（输出状态）'
+    expect(rows[1].loop_name).toBe('[1强电继电器（输出状态）-10-2]');
   });
 });