Made everything needed to update firmware. Added the bundle to upload both front and backendin a bundle. Added magic number for more safety

Provider/main/api/ota/status.cpp

@@ -3,9 +3,13 @@
 // SDK
 #include "cJSON.h"
 #include "esp_http_server.h"
+#include "esp_image_format.h"
 #include "esp_littlefs.h"
+#include "esp_log.h"
 #include "esp_ota_ops.h"
 #include "esp_partition.h"
+#include "esp_vfs.h"
+#include <string.h>
 
 // Project
 #include "appstate.hpp"
@@ -58,11 +62,16 @@ internal esp_err_t api_ota_status_handler(httpd_req_t *req)
       esp_app_desc_t app_desc;
       if (esp_ota_get_partition_description(p, &app_desc) == ESP_OK)
       {
-        // This is a bit of a hack as we don't have a direct "binary size" in
-        // the header but we can at least show it's occupied. For simplicity, if
-        // it's a valid app, we'll mark some space as used. Actually, without a
-        // better way to get the exact bin size, we'll just show it's an App.
         cJSON_AddStringToObject(p_obj, "app_version", app_desc.version);
+
+        // Get the true binary size from image metadata
+        esp_image_metadata_t data;
+        const esp_partition_pos_t pos = {.offset = p->address, .size = p->size};
+        if (esp_image_get_metadata(&pos, &data) == ESP_OK)
+        {
+          cJSON_AddNumberToObject(p_obj, "used", data.image_len);
+          cJSON_AddNumberToObject(p_obj, "free", p->size - data.image_len);
+        }
       }
     }