1. 优化了cpp_json的内容，使其更modern

2. 稍微优化了一下系统配置类
3. 增加了系统版本号，便于区分系统版本，方便OTA
4. 重写OTA的逻辑，完成了Cpp的OTA封装，测试通过

Bionic_Core/ToolsClass/Sys_Config/sys_conf_singleton.cpp

@@ -3,3 +3,7 @@
 //
 
 #include "sys_conf_singleton.h"
+
+// 静态成员变量定义
+SysConfJson* SysConfJson::instance = nullptr;
+std::mutex SysConfJson::instanceMutex;

Bionic_Core/ToolsClass/Sys_Config/sys_conf_singleton.h

@@ -13,16 +13,16 @@
 #include <fstream>
 #include <mutex>
 
-static constexpr char kSysConfPartName[] = "sys_conf";
-
-template <const char* PartitionLabel>
 class SysConfJson {
 public:
-    static SysConfJson& instance() {
-        static SysConfJson inst;
-        return inst;
+    static SysConfJson* getInstance() {
+        std::lock_guard<std::mutex> lock(instanceMutex);
+        if (instance == nullptr) {
+            instance = new SysConfJson();
+            return instance;
+        }
+        return instance;
     }
-
     /* 把 sn 持久化到 <mount>/sn.json，成功返回 true */
     bool saveSN(const std::string& sn)
     {
@@ -30,7 +30,6 @@ public:
         doc.set("sn", cppjson::Json(sn));   // {"sn":"xxxxxx"}
         return write("sn", doc);            // 实际文件 = <mount>/sn.json
     }
-
     /* 读取 sn，如果文件/字段不存在返回空串（绝不抛异常） */
     std::string loadSN()
     {
@@ -39,14 +38,12 @@ public:
         cppjson::Json snNode = j["sn"];
         return snNode.isString() ? snNode.asString() : "";
     }
-
     /* 直接覆盖写，无 tmp */
     bool write(const char* key, const cppjson::Json& j) {
         const std::string path = buildPath(key);
         const std::string txt  = j.dump();
         return writeRaw(path, txt);
     }
-
     /* 读 */
     cppjson::Json read(const char* key) const {
         std::string content;
@@ -58,13 +55,11 @@ public:
             return {};
         }
     }
-
     /* 删文件 */
     bool remove(const char* key) const {
         const std::string path = buildPath(key);
         return ::unlink(path.c_str()) == 0;
     }
-
     /* 列文件 */
     [[nodiscard]] std::vector<std::string> ls() const {
         std::vector<std::string> names;
@@ -78,35 +73,24 @@ public:
         ::closedir(dir);
         return names;
     }
-
     /* 格式化 */
     [[nodiscard]] bool format() const {
-        ESP_LOGW(TAG, "format <%s>", PartitionLabel);
-        return esp_vfs_fat_spiflash_format_rw_wl(kMount, PartitionLabel) == ESP_OK;
+        ESP_LOGW(TAG, "format <%s>", kSysConfPartName);
+        return esp_vfs_fat_spiflash_format_rw_wl(kMount, kSysConfPartName) == ESP_OK;
     }
-
     /* 禁止拷贝 */
     SysConfJson(const SysConfJson&)            = delete;
     SysConfJson& operator=(const SysConfJson&) = delete;
-
 private:
-    constexpr static const char* TAG    = "SysConfJson";
-    constexpr static const char* kMount = "/sys_conf";
-    wl_handle_t wl_ = WL_INVALID_HANDLE;
-    bool mounted_   = false;
-    static constexpr const char* kFileName = "sys_conf.json";
-    std::mutex mtx_;
-
     SysConfJson() { mount(); }
     ~SysConfJson() { unmount(); }
-
     void mount() {
         esp_vfs_fat_mount_config_t cfg = {
-            .format_if_mount_failed = true,
+            .format_if_mount_failed = true,     // 如果 FAT 分区无法挂载，并且此参数为 true，则创建分区表并格式化文件系统。
             .max_files = 8,
-            .allocation_unit_size = CONFIG_WL_SECTOR_SIZE
+            .allocation_unit_size = CONFIG_WL_SECTOR_SIZE,
         };
-        esp_err_t err = esp_vfs_fat_spiflash_mount_rw_wl(kMount, PartitionLabel, &cfg, &wl_);
+        esp_err_t err = esp_vfs_fat_spiflash_mount_rw_wl(kMount, kSysConfPartName, &cfg, &wl_);
         if (err != ESP_OK) {
             ESP_LOGE(TAG, "mount fail <%s>", esp_err_to_name(err));
             return;
@@ -114,14 +98,12 @@ private:
         mounted_ = true;
         ESP_LOGI(TAG, "FAT mounted at %s", kMount);
     }
-
     void unmount() {
         if (!mounted_) return;
         esp_vfs_fat_spiflash_unmount_rw_wl(kMount, wl_);
         wl_ = WL_INVALID_HANDLE;
         mounted_ = false;
     }
-
     bool writeRaw(const std::string& path, const std::string& txt) {
         FILE* f = std::fopen(path.c_str(), "wb");
         if (!f) return false;
@@ -129,7 +111,6 @@ private:
         std::fclose(f);
         return ok;
     }
-
     bool readRaw(const char* key, std::string& out) const {
         const std::string path = buildPath(key);
         FILE* f = std::fopen(path.c_str(), "rb");
@@ -146,6 +127,15 @@ private:
     std::string buildPath(const char* key) const {
         return std::string(kMount) + "/" + key;
     }
+private:
+    constexpr static const char* TAG    = "SysConfJson";
+    constexpr static const char* kMount = "/sys_conf";
+    static constexpr char kSysConfPartName[] = "sys_conf";
+    wl_handle_t wl_ = WL_INVALID_HANDLE;
+    bool mounted_   = false;
+    static constexpr const char* kFileName = "sys_conf.json";
+    static SysConfJson* instance;     // 单例实例
+    static std::mutex instanceMutex;            // 单例锁
+    
 };
 
-#define SYS_CONF_JSON() SysConfJson<kSysConfPartName>::instance()