Updated local storage

src/model.hpp

@@ -11,6 +11,7 @@
 #include <plot/data/ring_buffer.hpp>
 
 #include <atomic>
+#include <unordered_map>
 #include <cstdint>
 #include <memory>
 #include <mutex>
@@ -183,6 +184,11 @@ class ScopeModel {
   static bool is_time_signal(const std::vector<SignalInfo>& signals,
                              std::size_t signal);
   void set_signal_enabled(std::size_t signal, bool on);
+  /// Stores the calibration for a signal's *name* and applies it to that signal's
+  /// live channels. Keyed by name, not index: a CONFIG renumbers and an
+  /// enable/disable rebuilds the channel list, and `rebuild_channels()` re-applies
+  /// from here -- so a calibration set before a signal was enabled, or surviving a
+  /// CONFIG, is not silently dropped.
   void set_calibration(std::size_t signal, double gain, double offset);
 
   std::size_t channel_count() const noexcept { return channels_.size(); }
@@ -352,6 +358,8 @@ class ScopeModel {
   std::atomic<bool> trigger_pending_{false};
   std::atomic<double> capture_edge_{0.0};
   std::atomic<std::shared_ptr<const EventSnapshot>> event_;  ///< the event on screen
+  /// Per-signal-name calibration (see `set_calibration`).
+  std::unordered_map<std::string, std::pair<double, double>> calibration_;
   std::atomic<std::uint64_t> event_seq_{0};
   std::atomic<double> display_epoch_{0.0};
   std::atomic<bool> trigger_armed_{false};