Updated local storage

src/model.cpp

@@ -184,6 +184,12 @@ void ScopeModel::rebuild_channels() {
     ch.unit = sig.unit;
     ch.elements = sig.elements();
     ch.dt = sig.sampling_rate > 0.0 ? 1.0 / sig.sampling_rate : 0.0;
+    // A calibration the user already set for this name (before it was enabled, or
+    // before a CONFIG renumbered the channels) still applies.
+    if (auto it = calibration_.find(sig.name); it != calibration_.end()) {
+      ch.gain = it->second.first;
+      ch.offset = it->second.second;
+    }
     channels_.push_back(std::move(ch));
   }
 }
@@ -277,6 +283,7 @@ void ScopeModel::set_signal_enabled(std::size_t signal, bool on) {
 
 void ScopeModel::set_calibration(std::size_t signal, double gain, double offset) {
   std::lock_guard<std::mutex> lock(mutex_);
+  if (signal < signals_.size()) calibration_[signals_[signal].name] = {gain, offset};
   bool any = false;
   for (ChannelInfo& c : channels_) {
     if (c.signal != signal) continue;