feat: add SD-backed stats archive and dedicated /stats web console

src/helpers/web/WebService.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <Arduino.h>
+#include <helpers/IdentityStore.h>
+#include <helpers/NetworkStateProvider.h>
+
+#include "WebPanelServer.h"
+#include "WebPrefs.h"
+
+class WebService {
+public:
+  WebService();
+
+  void begin(FILESYSTEM* fs);
+  void end();
+  void loop();
+
+  void setCommandRunner(WebPanelCommandRunner* runner);
+  void setNetworkStateProvider(NetworkStateProvider* network) { _network = network; }
+
+  bool setWebEnabled(bool enabled);
+  bool isWebEnabled() const { return _prefs.web_enabled != 0; }
+  bool setWebStatsEnabled(bool enabled);
+  bool isWebStatsEnabled() const { return _prefs.web_stats_enabled != 0; }
+
+  void formatWebStatusReply(char* reply, size_t reply_size) const;
+  bool isPanelRunning() const { return _panel.isRunning(); }
+  bool isPanelUnlocked() const { return _panel.hasSessionToken(); }
+
+private:
+#if defined(ESP_PLATFORM) && WITH_WEB_PANEL
+  void ensureWebServer();
+#endif
+  bool savePrefs();
+
+  FILESYSTEM* _fs;
+  WebPrefs _prefs;
+  WebPanelCommandRunner* _runner;
+  NetworkStateProvider* _network;
+  WebPanelServer _panel;
+};