Move /mints to API server (port 2121), fix services persistence

- /mints handler moved from captive portal (port 80) to API server (port 2121)
  where it belongs (JSON endpoint, matches portal JS fetch URL)
- Remove stop_services() from STA disconnect and IP loss handlers
- Services now persist across WiFi STA reconnections
- Reduce MAX_STA_RETRY from 5 to 3

3 files changed, 25 insertions, 29 deletions

diff --git a/main/captive_portal.c b/main/captive_portal.c
index 58a3560..c9bcf19 100644
--- a/main/captive_portal.c
+++ b/main/captive_portal.c
@@ -236,25 +236,6 @@ static esp_err_t grant_access_handler(httpd_req_t *req)
     return ESP_OK;
 }
 
-static esp_err_t mints_handler(httpd_req_t *req)
-{
-    int mint_count = 0;
-    const mint_status_t *mints = mint_health_get_all(&mint_count);
-    cJSON *arr = cJSON_CreateArray();
-    for (int i = 0; i < mint_count; i++) {
-        cJSON *obj = cJSON_CreateObject();
-        cJSON_AddStringToObject(obj, "url", mints[i].url);
-        cJSON_AddBoolToObject(obj, "reachable", mints[i].reachable);
-        cJSON_AddItemToArray(arr, obj);
-    }
-    char *json = cJSON_PrintUnformatted(arr);
-    httpd_resp_set_type(req, "application/json");
-    httpd_resp_send(req, json, strlen(json));
-    cJSON_free(json);
-    cJSON_Delete(arr);
-    return ESP_OK;
-}
-
 static esp_err_t status_handler(httpd_req_t *req)
 {
     const tollgate_config_t *cfg = tollgate_config_get();
@@ -355,7 +336,6 @@ static esp_err_t catchall_handler(httpd_req_t *req)
 
 static const httpd_uri_t uri_portal = { .uri = "/", .method = HTTP_GET, .handler = portal_handler };
 static const httpd_uri_t uri_grant = { .uri = "/grant_access", .method = HTTP_GET, .handler = grant_access_handler };
-static const httpd_uri_t uri_mints = { .uri = "/mints", .method = HTTP_GET, .handler = mints_handler };
 static const httpd_uri_t uri_status = { .uri = "/api/status", .method = HTTP_GET, .handler = status_handler };
 static const httpd_uri_t uri_whoami = { .uri = "/whoami", .method = HTTP_GET, .handler = whoami_handler };
 static const httpd_uri_t uri_usage = { .uri = "/usage", .method = HTTP_GET, .handler = usage_handler };
@@ -386,7 +366,6 @@ esp_err_t captive_portal_start(const char *ap_ip_str)
 
     httpd_register_uri_handler(s_server, &uri_portal);
     httpd_register_uri_handler(s_server, &uri_grant);
-    httpd_register_uri_handler(s_server, &uri_mints);
     httpd_register_uri_handler(s_server, &uri_status);
     httpd_register_uri_handler(s_server, &uri_whoami);
     httpd_register_uri_handler(s_server, &uri_usage);
diff --git a/main/tollgate_api.c b/main/tollgate_api.c
index b694729..22b30ee 100644
--- a/main/tollgate_api.c
+++ b/main/tollgate_api.c
@@ -484,8 +484,28 @@ static esp_err_t api_post_wallet_send(httpd_req_t *req)
     return ESP_OK;
 }
 
+static esp_err_t api_get_mints(httpd_req_t *req)
+{
+    int mint_count = 0;
+    const mint_status_t *mints = mint_health_get_all(&mint_count);
+    cJSON *arr = cJSON_CreateArray();
+    for (int i = 0; i < mint_count; i++) {
+        cJSON *obj = cJSON_CreateObject();
+        cJSON_AddStringToObject(obj, "url", mints[i].url);
+        cJSON_AddBoolToObject(obj, "reachable", mints[i].reachable);
+        cJSON_AddItemToArray(arr, obj);
+    }
+    char *json = cJSON_PrintUnformatted(arr);
+    httpd_resp_set_type(req, "application/json");
+    httpd_resp_send(req, json, strlen(json));
+    cJSON_free(json);
+    cJSON_Delete(arr);
+    return ESP_OK;
+}
+
 static const httpd_uri_t uri_discovery = { .uri = "/", .method = HTTP_GET, .handler = api_get_discovery };
 static const httpd_uri_t uri_payment = { .uri = "/", .method = HTTP_POST, .handler = api_post_payment };
+static const httpd_uri_t uri_mints = { .uri = "/mints", .method = HTTP_GET, .handler = api_get_mints };
 static const httpd_uri_t uri_usage = { .uri = "/usage", .method = HTTP_GET, .handler = api_get_usage };
 static const httpd_uri_t uri_whoami = { .uri = "/whoami", .method = HTTP_GET, .handler = api_get_whoami };
 static const httpd_uri_t uri_wallet = { .uri = "/wallet", .method = HTTP_GET, .handler = api_get_wallet };
@@ -499,7 +519,7 @@ esp_err_t tollgate_api_start(void)
     httpd_config_t config = HTTPD_DEFAULT_CONFIG();
     config.server_port = 2121;
     config.ctrl_port = 32769;
-    config.max_uri_handlers = 10;
+    config.max_uri_handlers = 12;
     config.stack_size = 16384;
 
     esp_err_t ret = httpd_start(&s_api_server, &config);
@@ -510,6 +530,7 @@ esp_err_t tollgate_api_start(void)
 
     httpd_register_uri_handler(s_api_server, &uri_discovery);
     httpd_register_uri_handler(s_api_server, &uri_payment);
+    httpd_register_uri_handler(s_api_server, &uri_mints);
     httpd_register_uri_handler(s_api_server, &uri_usage);
     httpd_register_uri_handler(s_api_server, &uri_whoami);
     httpd_register_uri_handler(s_api_server, &uri_wallet);
diff --git a/main/tollgate_main.c b/main/tollgate_main.c
index 5f3e0e1..018d934 100644
--- a/main/tollgate_main.c
+++ b/main/tollgate_main.c
@@ -26,7 +26,7 @@
 #include "cvm_server.h"
 #include "display.h"
 
-#define MAX_STA_RETRY 5
+#define MAX_STA_RETRY 3
 static const char *TAG = "tollgate_main";
 
 static EventGroupHandle_t s_wifi_event_group;
@@ -55,7 +55,6 @@ static void wifi_event_handler(void *arg, esp_event_base_t event_base,
         s_retry_count++;
         ESP_LOGW(TAG, "WiFi disconnected, retry %d/%d", s_retry_count, MAX_STA_RETRY);
         tollgate_client_on_sta_disconnected();
-        if (s_services_running) stop_services();
         if (s_retry_count < MAX_STA_RETRY) {
             esp_wifi_connect();
         } else {
@@ -112,7 +111,6 @@ static void ip_event_handler(void *arg, esp_event_base_t event_base,
     } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_LOST_IP) {
         ESP_LOGW(TAG, "Lost IP address");
         xEventGroupClearBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
-        stop_services();
     }
 }
 
@@ -319,10 +317,8 @@ void app_main(void)
 
     ESP_LOGI(TAG, "WiFi AP+STA started, waiting for connection...");
 
-    if (tollgate_config_get_wifi(&(wifi_config_t){0}) != ESP_OK) {
-        ESP_LOGI(TAG, "No STA network configured, starting services immediately");
-        xTaskCreate(services_start_task, "svc_start", 32768, NULL, 5, NULL);
-    }
+    xTaskCreate(services_start_task, "svc_start", 32768, NULL, 5, NULL);
+    ESP_LOGI(TAG, "Services starting immediately (AP-only mode, STA will connect when available)");
 
     while (1) {
         vTaskDelay(pdMS_TO_TICKS(1000));