refactor: replace psram allocations with standard heap

Signed-off-by: Bo <boironic@gmail.com>

main/tools/tool_web_search.c

@@ -7,7 +7,6 @@
 #include "esp_log.h"
 #include "esp_http_client.h"
 #include "esp_crt_bundle.h"
-#include "esp_heap_caps.h"
 #include "nvs.h"
 #include "cJSON.h"
 
@@ -256,9 +255,8 @@ esp_err_t tool_web_search_execute(const char *input_json, char *output, size_t o
     snprintf(path, sizeof(path),
              "/res/v1/web/search?q=%s&count=%d", encoded_query, SEARCH_RESULT_COUNT);
 
-    /* Allocate response buffer from PSRAM */
     search_buf_t sb = {0};
-    sb.data = heap_caps_calloc(1, SEARCH_BUF_SIZE, MALLOC_CAP_SPIRAM);
+    sb.data = calloc(1, SEARCH_BUF_SIZE);
     if (!sb.data) {
         snprintf(output, output_size, "Error: Out of memory");
         return ESP_ERR_NO_MEM;