Require SD card or >4MB flash (#545)

Tactility/Private/Tactility/app/chat/ChatSettings.h

@@ -14,8 +14,6 @@
 
 namespace tt::app::chat {
 
-constexpr auto* CHAT_SETTINGS_FILE = "/data/settings/chat.properties";
-
 struct ChatSettingsData {
     uint32_t senderId = 0;  // Unique device ID (randomly generated on first launch)
     std::string nickname = "Device";

Tactility/Private/Tactility/service/webserver/WebServerService.h

@@ -97,6 +97,9 @@ public:
 // Global accessor for controlling the WebServer service
 void setWebServerEnabled(bool enabled);
 
+// Returns whether the HTTP server is actually running right now (not just the persisted setting)
+bool isWebServerEnabled();
+
 // Get the pubsub for subscribing to WebServer events
 std::shared_ptr<PubSub<WebServerEvent>> getPubsub();