13 files changed, 42 insertions, 3 deletions

diff --git a/ui/windows/__pycache__/__init__.cpython-312.pyc b/ui/windows/__pycache__/__init__.cpython-312.pyc
deleted file mode 100644
index 66495c5..0000000
--- a/ui/windows/__pycache__/__init__.cpython-312.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/__init__.cpython-314.pyc b/ui/windows/__pycache__/__init__.cpython-314.pyc
deleted file mode 100644
index 873ff5b..0000000
--- a/ui/windows/__pycache__/__init__.cpython-314.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/controls_window.cpython-312.pyc b/ui/windows/__pycache__/controls_window.cpython-312.pyc
deleted file mode 100644
index d3d59fc..0000000
--- a/ui/windows/__pycache__/controls_window.cpython-312.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/devices_window.cpython-312.pyc b/ui/windows/__pycache__/devices_window.cpython-312.pyc
deleted file mode 100644
index dc62b48..0000000
--- a/ui/windows/__pycache__/devices_window.cpython-312.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/devices_window.cpython-314.pyc b/ui/windows/__pycache__/devices_window.cpython-314.pyc
deleted file mode 100644
index 9f819dd..0000000
--- a/ui/windows/__pycache__/devices_window.cpython-314.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/plot_window.cpython-312.pyc b/ui/windows/__pycache__/plot_window.cpython-312.pyc
deleted file mode 100644
index d3a1583..0000000
--- a/ui/windows/__pycache__/plot_window.cpython-312.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/plot_window.cpython-314.pyc b/ui/windows/__pycache__/plot_window.cpython-314.pyc
deleted file mode 100644
index 9782293..0000000
--- a/ui/windows/__pycache__/plot_window.cpython-314.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/settings_window.cpython-312.pyc b/ui/windows/__pycache__/settings_window.cpython-312.pyc
deleted file mode 100644
index d596487..0000000
--- a/ui/windows/__pycache__/settings_window.cpython-312.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/settings_window.cpython-314.pyc b/ui/windows/__pycache__/settings_window.cpython-314.pyc
deleted file mode 100644
index f732521..0000000
--- a/ui/windows/__pycache__/settings_window.cpython-314.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/signals_window.cpython-312.pyc b/ui/windows/__pycache__/signals_window.cpython-312.pyc
deleted file mode 100644
index 9872798..0000000
--- a/ui/windows/__pycache__/signals_window.cpython-312.pyc
+++ /dev/null
diff --git a/ui/windows/__pycache__/signals_window.cpython-314.pyc b/ui/windows/__pycache__/signals_window.cpython-314.pyc
deleted file mode 100644
index 2027f59..0000000
--- a/ui/windows/__pycache__/signals_window.cpython-314.pyc
+++ /dev/null
diff --git a/ui/windows/channels_window.py b/ui/windows/channels_window.py
index 01b798c..4f0860d 100644
--- a/ui/windows/channels_window.py
+++ b/ui/windows/channels_window.py
@@ -105,7 +105,7 @@ class ChannelPickerDialog(QDialog):
                 cl.addWidget(chk)
 
         if not any_available:
-            cl.addWidget(QLabel("No additional channels available."))
+            cl.addWidget(QLabel("No additional signals available."))
 
         cl.addStretch()
         scroll.setWidget(cont)
diff --git a/ui/windows/plot_window.py b/ui/windows/plot_window.py
index bc8823f..9edf046 100644
--- a/ui/windows/plot_window.py
+++ b/ui/windows/plot_window.py
@@ -355,7 +355,6 @@ class PaneBlock(QFrame):
         self._x_cb.addItem("⏱  Time (elapsed s)", userData="time")
         for dev in self.registry.all_instances():
             for ch in dev.info.channels:
-                if not ch.enabled: continue
                 self._x_cb.addItem(f"{dev.info.device_id}/{ch.channel_id}  ({ch.name})",
                                    userData=f"{dev.info.device_id}/{ch.channel_id}")
         for dc in self.processor.get_derived():
@@ -418,7 +417,6 @@ class PaneBlock(QFrame):
         cb = QComboBox(); cb.setObjectName("channelPickerCb")
         for dev in self.registry.all_instances():
             for ch in dev.info.channels:
-                if not ch.enabled: continue
                 cb.addItem(f"{dev.info.device_id} / {ch.channel_id}  ({ch.name})",
                            userData=(dev.info.device_id, ch.channel_id, ch.name, ch.color))
         for dc in self.processor.get_derived():
@@ -1026,6 +1024,47 @@ class PlotWindow(QWidget):
                 QMessageBox.critical(self, "Import failed", str(e))
 
     def refresh_channels(self):
+        """Sync virtual channel panes then rebuild UI."""
+        existing = {
+            tr.channel_id
+            for p in self.cfg.panes
+            for tr in p.traces if tr.device_id == "derived"
+        }
+        current_ids = {dc.channel_id for dc in self.processor.get_derived()}
+
+        # Add panes for new virtual channels
+        for dc in self.processor.get_derived():
+            if dc.channel_id not in existing:
+                new_idx = len(self.cfg.panes)
+                spec = PaneSpec(title=dc.name, y_label=dc.unit)
+                spec.traces.append(TraceSpec(
+                    device_id="derived", channel_id=dc.channel_id,
+                    label=dc.name, color=dc.color,
+                ))
+                self.cfg.panes.append(spec)
+                if self.cfg.tree is None:
+                    self.cfg.tree = {"kind": "leaf", "pane": 0}
+                else:
+                    self.cfg.tree = _tree_equalize_ratios({
+                        "kind": "vsplit", "ratio": 0.5,
+                        "first": self.cfg.tree,
+                        "second": {"kind": "leaf", "pane": new_idx},
+                    })
+
+        # Remove panes whose sole trace is a deleted virtual channel
+        removed = [
+            i for i, p in enumerate(self.cfg.panes)
+            if len(p.traces) == 1
+            and p.traces[0].device_id == "derived"
+            and p.traces[0].channel_id not in current_ids
+        ]
+        for i in reversed(removed):
+            self.cfg.panes.pop(i)
+            if self.cfg.tree:
+                self.cfg.tree = _tree_remove(self.cfg.tree, i)
+                if self.cfg.tree:
+                    self.cfg.tree = _tree_equalize_ratios(_tree_reindex(self.cfg.tree, i))
+
         self._populate()
 
     def closeEvent(self, e: QCloseEvent):