Phase 6: SoftAP MTG-Companion web server, /api/last_uid + /api/bind UID pairing, embedded pairing SPA

main/web_server.h

@@ -0,0 +1,28 @@
+/*
+ * MTG RFID Companion - Registration web server (SoftAP)
+ *
+ * Phase 6: Hosts the SoftAP "MTG-Companion" (192.168.4.1) and serves the
+ * card-pairing SPA plus /api/last_uid and /api/bind endpoints.
+ */
+
+#pragma once
+
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Start the SoftAP and HTTP server. Idempotent.
+ */
+esp_err_t web_server_start(void);
+
+/**
+ * @brief True if the HTTP server is running.
+ */
+bool web_server_is_running(void);
+
+#ifdef __cplusplus
+}
+#endif