feat：新增MQTT控制组件和自动告警系统

- 实现MQTT控制功能，处理水泵和灯光控制指令
- 新增土壤湿度和光照强度自动告警系统，阈值可配置
- 新建MQTT控制、自动告警和阈值管理相关文件
- 更新主应用，集成MQTT和自动控制功能
- 新增传感器数据与控制状态遥测上报
- 引入NVS和应用存储分区配置

dependencies.lock

@@ -9,6 +9,16 @@ dependencies:
       registry_url: https://components.espressif.com/
       type: service
     version: 2.0.0
+  espressif/cjson:
+    component_hash: 002c6d1872ee4c97d333938ebe107a29841cc847f9de89e676714bd2844057ea
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=5.0'
+    source:
+      registry_url: https://components.espressif.com/
+      type: service
+    version: 1.7.19~1
   espressif/console_simple_init:
     component_hash: b488b12318f3cb6e0b55b034bd12956926d45f0e1396442e820f8ece4776c306
     dependencies:
@@ -33,6 +43,16 @@ dependencies:
       registry_url: https://components.espressif.com/
       type: service
     version: 2.7.2
+  espressif/mqtt:
+    component_hash: ffdad5659706b4dc14bc63f8eb73ef765efa015bf7e9adf71c813d52a2dc9342
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=5.3'
+    source:
+      registry_url: https://components.espressif.com/
+      type: service
+    version: 1.0.0
   idf:
     source:
       type: idf
@@ -70,10 +90,12 @@ dependencies:
     version: 9.5.0
 direct_dependencies:
 - espressif/bh1750
+- espressif/cjson
 - espressif/console_simple_init
 - espressif/esp_lvgl_port
+- espressif/mqtt
 - idf
 - k0i05/esp_ahtxx
-manifest_hash: 876b8b787041413cd7d3f71227f1618dceac35f343e17a5874d56c77837d0705
+manifest_hash: 718977b7c70d2e199530b4f98a537ecc03c07999f59c844987823a832f51b9b0
 target: esp32c3
 version: 2.0.0