fix: Verbindungs-Timeout im WLAN-Zustandsautomaten

src/net/nl_wifi_sm.h

@@ -10,6 +10,7 @@
 #define NL_WIFI_AP_CLOSE_FALLBACK_MS 10000u
 #define NL_WIFI_BACKOFF_MIN_MS       1000u
 #define NL_WIFI_BACKOFF_MAX_MS       60000u
+#define NL_WIFI_CONNECT_TIMEOUT_MS   30000u /* no event after a connect -> treat as failed */
 
 typedef enum {
     NL_WIFI_ST_AP_ONBOARDING = 0,
@@ -41,11 +42,13 @@ typedef struct {
     bool            pulsing;
     bool            retry_armed;
     bool            ap_stop_armed;
+    bool            awaiting;   /* waiting for response to a connect */
     uint32_t        since;      /* start of the current connecting phase */
     uint32_t        retry_at;
     uint32_t        backoff;
     uint32_t        deadline;   /* onboarding test */
     uint32_t        ap_stop_at;
+    uint32_t        connect_at; /* when the pending connect was issued */
 } nl_wifi_sm_t;
 
 nl_wifi_actions_t nl_wifi_sm_start(nl_wifi_sm_t *sm, bool have_creds, uint32_t now);