add UBX-MON-VER support and surface device identification in CLI/GUI

Add the Ver message parser and a fixed UbxQuery (was unused and had a
broken semaphore/state bug) to poll MON-VER once on connect. The CLI
prints hw/sw version and extensions; the GUI polls it per receiver,
pre-fills the read-only ID field with a connection counter and
rewrites it from the MOD= extension once the device answers, and
propagates the resolved display name to the Sky and Plot tabs so they
no longer show the stale placeholder ID.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XM4FNUjhu9x8df5Dp1hHvd

gui/plot_widget.py

@@ -316,6 +316,7 @@ class SinglePlotWidget(QWidget):
         model.receiver_removed.connect(self._on_receiver_removed)
         model.satellite_update.connect(self._on_sat_update)
         model.pdop_update.connect(self._on_pdop_update)
+        model.version_update.connect(self._on_version_update)
 
     # ── UI ────────────────────────────────────────────────────────────────────
 
@@ -425,7 +426,7 @@ class SinglePlotWidget(QWidget):
         for rid in selected:
             ts_dq, v_dq = self._data.get(rid, ([], []))
             if ts_dq:
-                snapshot[rid] = (list(ts_dq), list(v_dq))
+                snapshot[self._model.display_name(rid)] = (list(ts_dq), list(v_dq))
         w, h = self._canvas.width(), self._canvas.height()
         if w > 0 and h > 0:
             self._thread.submit(snapshot, self._y_cb.currentText(), w, h)
@@ -485,6 +486,15 @@ class SinglePlotWidget(QWidget):
         self._rebuild_val_combo()
         self._submit_render()
 
+    def _on_version_update(self, rid: str, device_id: str, sw_version: str):
+        label = self._model.display_name(rid)
+        for i in range(self._src_list.count()):
+            item = self._src_list.item(i)
+            if item.data(Qt.UserRole) == rid:
+                item.setText(f" {label} ")
+                break
+        self._submit_render()
+
     def _on_sat_update(self, rid: str, sats: list):
         selected = set(self._selected_rids())
         if rid not in selected: