Implementing sent message ack functionality into txt-reader branch

examples/companion_radio/AbstractUITask.h

@@ -43,4 +43,6 @@ public:
   virtual void newMsg(uint8_t path_len, const char* from_name, const char* text, int msgcount) = 0;
   virtual void notify(UIEventType t = UIEventType::none) = 0;
   virtual void loop() = 0;
+  virtual void showAlert(const char* text, int duration_millis) {}
+  virtual void forceRefresh() {}
 };

examples/companion_radio/MyMesh.h

@@ -8,11 +8,11 @@
 #define FIRMWARE_VER_CODE 8
 
 #ifndef FIRMWARE_BUILD_DATE
-#define FIRMWARE_BUILD_DATE "7 Feb 2026"
+#define FIRMWARE_BUILD_DATE "8 Feb 2026"
 #endif
 
 #ifndef FIRMWARE_VERSION
-#define FIRMWARE_VERSION "Meck v0.7"
+#define FIRMWARE_VERSION "Meck v0.7.1"
 #endif
 
 #if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
@@ -231,6 +231,19 @@ private:
 
   #define ADVERT_PATH_TABLE_SIZE   16
   AdvertPath advert_paths[ADVERT_PATH_TABLE_SIZE]; // circular table
+
+    // Sent message repeat tracking
+  #define SENT_TRACK_SIZE          4
+  #define SENT_FINGERPRINT_SIZE    12
+  #define SENT_TRACK_EXPIRY_MS     30000  // stop tracking after 30 seconds
+  struct SentMsgTrack {
+    uint8_t fingerprint[SENT_FINGERPRINT_SIZE];
+    uint8_t repeat_count;
+    unsigned long sent_millis;
+    bool active;
+  };
+  SentMsgTrack _sent_track[SENT_TRACK_SIZE];
+  int _sent_track_idx;  // next slot in circular buffer
 };
 
 extern MyMesh the_mesh;

examples/companion_radio/ui-new/UITask.cpp

@@ -612,6 +612,7 @@ void UITask::begin(DisplayDriver* display, SensorManager* sensors, NodePrefs* no
 void UITask::showAlert(const char* text, int duration_millis) {
   strcpy(_alert, text);
   _alert_expiry = millis() + duration_millis;
+  _next_refresh = millis() + 100;  // trigger re-render to show updated text
 }
 
 void UITask::notify(UIEventType t) {

examples/companion_radio/ui-new/UITask.h

@@ -77,7 +77,8 @@ public:
   void gotoHomeScreen() { setCurrScreen(home); }
   void gotoChannelScreen();  // Navigate to channel message screen
   void gotoTextReader();     // *** NEW: Navigate to text reader ***
-  void showAlert(const char* text, int duration_millis);
+  void showAlert(const char* text, int duration_millis) override;
+  void forceRefresh() override { _next_refresh = 100; }
   int  getMsgCount() const { return _msgcount; }
   bool hasDisplay() const { return _display != NULL; }
   bool isButtonPressed() const;