- Tags haben jetzt einen Verlauf

- Suchfunktion hat jetzt weiter und zurück
- Tags mit Bindestrich werden erkannt

include/tagpanel.h

@@ -5,17 +5,24 @@
 #include <QHBoxLayout>
 #include <QPushButton>
 #include <QTableWidget>
+#include <QPlainTextEdit>
+#include <QTabWidget>
 #include <QStringList>
 #include <QMap>
 
-// TagPanel displays the most recent data for a single tag (e.g. [WDG]).
-// Key=value pairs are shown in a table that updates in-place.
-// If a value contains ';', it is treated as a LIST: the key is shown once
-// and each list element gets its own row below it (key cell left empty
-// for the continuation rows, like a merged-cell look).
-// Example:  Devs=trackdisk.device;input.device
-//   Devs   trackdisk.device
-//          input.device
+// TagPanel displays the data received for a single tag (e.g. [WDG]) in two
+// tabs:
+//  - "Aktuell": the most recent value(s), updating in-place (a table for
+//    key=value pairs, or a plain label for raw/free-form content). If a
+//    value contains ';', it is treated as a LIST: the key is shown once
+//    and each list element gets its own row below it (key cell left empty
+//    for the continuation rows, like a merged-cell look).
+//    Example:  Devs=trackdisk.device;input.device
+//      Devs   trackdisk.device
+//             input.device
+//  - "Verlauf": every value ever received for this tag, timestamped, in
+//    receive order - so you can see the full runtime history rather than
+//    just the latest snapshot.
 class TagPanel : public QGroupBox
 {
     Q_OBJECT
@@ -30,16 +37,26 @@ public slots:
 
 private slots:
     void copyToClipboard();
+    void clearHistory();
 
 private:
     void parseKeyValue(const QString &value);
     void showRaw(const QString &value);
     // Replaces all rows belonging to `key` with one row per value in `values`.
     void setKeyValues(const QString &key, const QStringList &values);
+    // Appends a timestamped entry for `value` to the "Verlauf" tab.
+    void appendHistory(const QString &value);
 
     QString       m_tag;
-    QTableWidget *m_table    = nullptr;
-    QLabel       *m_rawLabel = nullptr;
+    QTabWidget   *m_tabs        = nullptr;
+    QTableWidget *m_table       = nullptr;
+    QLabel       *m_rawLabel    = nullptr;
+    QPlainTextEdit *m_historyEdit = nullptr;
+    int           m_historyCount = 0;
+
+    // Cap history growth for very chatty/long-running tags so memory use
+    // stays bounded; oldest entries are dropped first (FIFO).
+    static constexpr int kMaxHistoryEntries = 5000;
 
     // Track which table rows belong to which key, so repeated updates can
     // replace the previous rows instead of appending duplicates.