Fix LCD Communicaiton infinite looping upon failed commands

vesper/documentation/SentDevices

@@ -0,0 +1,43 @@
+# # # # # # # # # # # # # # # # # # # # # #
+STAMNA: 
+# # # # # # # # # # # # # # # # # # # # # #
+
+PV25L22BP01R01
+Bell Plus
+HW: 1.0
+
+u6545309759@gmail.com
+bellsystems2025
+aCx!97IEfTiA073^#*Jj
+
+
+
+# # # # # # # # # # # # # # # # # # # # # #
+XRISTIANIKH_ELPIS:  
+# # # # # # # # # # # # # # # # # # # # # #
+
+PV26B02BP01R01
+Bell Plus
+HW: 1.0
+
+mail: christianikielpis@gmail.com
+pass: bellsystems2025
+
+
+
+# # # # # # # # # # # # # # # # # # # # # #
+GREVENA:  
+# # # # # # # # # # # # # # # # # # # # # #
+
+PA26B06AM01R01
+Agnus Mini
+HW: 1.0
+
+
+# # # # # # # # # # # # # # # # # # # # # #
+LARISA:  
+# # # # # # # # # # # # # # # # # # # # # #
+
+PA26B06AM01R02
+Agnus Mini
+HW: 1.0

vesper/documentation/common_commands.txt

@@ -31,3 +31,12 @@ PV26A28BC01R01
     "action":"restart"
   }
 }
+
+
+{
+  "cmd":"system_info",
+  "contents":
+  {
+    "action":"get_full_settings"
+  }
+}

vesper/documentation/features.info

@@ -77,24 +77,3 @@ ToDo Fixes:
 - When a new user is created, set default PINs for both Quick Settings, and Settings. 
 
 
-
-// Stamna: 
-
-PV25L22BP01R01
-Bell Plus
-HW: 1.0
-
-u6545309759@gmail.com
-bellsystems2025
-aCx!97IEfTiA073^#*Jj
-
-
-// XRISTIANIKH_ELPIS:   
-
-PV26B02BP01R01
-Bell Plus
-HW: 1.0
-
-
-mail: christianikielpis@gmail.com
-pass: bellsystems2025

vesper/src/Communication/CommunicationRouter/CommunicationRouter.cpp

@@ -343,9 +343,29 @@ void CommunicationRouter::onWebSocketMessage(uint32_t clientId, const JsonDocume
 }
 
 void CommunicationRouter::onUartMessage(JsonDocument& message) {
-    // Extract command for logging
+    // Extract command and action for filtering
-    String cmd = message["cmd"] | "unknown";
+    String cmd = message["cmd"] | "";
-    LOG_INFO("🔌 UART message received: cmd=%s", cmd.c_str());
+    String action = message["contents"]["action"] | "";
+
+    // UART COMMAND WHITELIST: Only allow specific commands
+    // This prevents feedback loops between devices when bad messages occur.
+    // To re-enable full UART command support, remove this filter.
+    bool allowed = false;
+
+    if (cmd == "system_info" && action == "sync_time_to_lcd") {
+        allowed = true;
+    } else if (cmd == "playback" && (action == "play" || action == "stop")) {
+        allowed = true;
+    }
+
+    if (!allowed) {
+        // Silently ignore - do NOT send error response to avoid feedback loop
+        LOG_DEBUG("UART: Ignoring non-whitelisted command (cmd=%s, action=%s)",
+                  cmd.c_str(), action.c_str());
+        return;
+    }
+
+    LOG_INFO("🔌 UART command received: cmd=%s, action=%s", cmd.c_str(), action.c_str());
 
     // Create message context for UART
     CommandHandler::MessageContext context(CommandHandler::MessageSource::UART);

vesper/vesper.ino

@@ -64,7 +64,7 @@
  * 👨‍💻 AUTHOR: BellSystems bonamin
  */
 
-#define FW_VERSION "153"
+#define FW_VERSION "154"
 
 
 /*