Idle-Flush gefixt

include/serialworker.h

@@ -47,9 +47,11 @@ private slots:
     void onReadyRead();
     void onPortError(QSerialPort::SerialPortError err);
     void tryReconnect();
+    void flushScanTail();
 
 private:
     void processRawData(const QByteArray &data);
+    void appendToLineBuffer(const QByteArray &toProcess);
     void processLine(const QString &line);
     void scheduleReconnect();
 
@@ -59,6 +61,16 @@ private:
     QString       m_buffer;
     QByteArray    m_scanTail;   // carries partial ANSI sequences across reads
 
+    // If no further bytes arrive shortly after some data was held back in
+    // m_scanTail (to safely detect a possibly-split ANSI sequence), this
+    // timer fires and flushes that tail through the normal line-processing
+    // path anyway. Without this, the last line(s) of a burst can sit stuck
+    // in m_scanTail indefinitely if the sender goes quiet (e.g. a device
+    // that streams a final line and then stops) and only surface once new
+    // bytes eventually arrive (e.g. after a reboot).
+    QTimer *m_idleFlushTimer      = nullptr;
+    static constexpr int kIdleFlushMs = 50;
+
     QTimer *m_reconnectTimer      = nullptr;
     bool    m_autoReconnect       = true;
     bool    m_userDisconnected    = false;