Add object calibration

data_acq_and_processing/preprocessing/calibration_master/include/channel_bundle_support.hpp

@@ -50,6 +50,18 @@ class S21ReferenceBundle {
     std::unordered_map<ipc::ComboKey, ChannelTrace, ipc::ComboKeyHash> traces_by_combo_{};
 };
 
+// Object-derived MIMO correction, exported on each pair's runtime frequency grid.
+// An empty path disables it; enabled bundles must cover every active pair.
+class S21ObjectCalibrationBundle {
+  public:
+    void load(const std::string& path);
+    void validate_combos(const std::vector<ipc::ComboKey>& combos) const;
+    void apply(ipc::SweepTraceBlock& trace) const;
+
+  private:
+    std::unordered_map<ipc::ComboKey, ChannelTrace, ipc::ComboKeyHash> factors_by_combo_{};
+};
+
 class S11CalibrationBundle {
   public:
     struct Coefficients {