feat(factory-cli): add Wi-Fi credential management commands

components/platform/internal/wifi_portal.h

@@ -2,6 +2,7 @@
 
 #include "esp_err.h"
 #include <stdbool.h>
+#include <stddef.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -26,6 +27,17 @@ esp_err_t wifi_portal_init_defaults(const char *seed_ssid, const char *seed_pass
  */
 bool wifi_portal_has_saved_credentials(void);
 
+/**
+ * @brief Copy saved SSIDs in persistent priority order.
+ *
+ * Passwords are intentionally not exposed. `out_ssids` contains `capacity`
+ * rows of `ssid_stride` bytes. `out_count` receives the total saved count.
+ */
+esp_err_t wifi_portal_get_saved_ssids(char *out_ssids,
+                                      size_t ssid_stride,
+                                      size_t capacity,
+                                      size_t *out_count);
+
 /**
  * @brief Check whether the STA interface is connected (has an IP).
  *