docs: 调整为7种传感器类型并规划配对时手动按键微调后缀序号逻辑

Docs/60_coding/mod-sys.md

@@ -45,3 +45,33 @@ u32 Get_Bracelet_Factory_ID(void) {
     return uid;
 }
 ```
+
+### 2.4 传感器自定义名称拼接与写入 (Add_Sensor)
+在 `Add_Sensor(u32 addr, u8 type, u8 suffix_idx)` 中，系统预设 7 类传感器名前缀：
+```c
+char *code sensor_prefixes[7] = {
+    "PORTE", "PIR", "FUMEE", "URGENCE", "GAZ", "INOND.", "VIBRA."
+};
+```
+在写入时，手动拼接前缀和两位数字 `suffix_idx` 后缀：
+```c
+void Add_Sensor(u32 addr, u8 type, u8 suffix_idx) {
+    u8 slot = ...; // 检索空槽或匹配历史ID
+    char *prefix = sensor_prefixes[type];
+    u8 len = 0;
+    
+    // 拷贝前缀
+    while (prefix[len] != '\0' && len < 11) {
+        sensor_list[slot].name_gbk[len] = prefix[len];
+        len++;
+    }
+    sensor_list[slot].name_gbk[len++] = ' ';
+    sensor_list[slot].name_gbk[len++] = '0' + (suffix_idx / 10);
+    sensor_list[slot].name_gbk[len++] = '0' + (suffix_idx % 10);
+    sensor_list[slot].name_gbk[len] = '\0';
+    
+    // 其余变量赋值并保存数据库
+    // ...
+    Save_Database();
+}
+```