feat(reverse-reactions): major work towrds detailed balance calculations

src/network/lib/partition/composite/partition_composite.cpp

@@ -17,6 +17,13 @@ namespace gridfire::partition {
         }
     }
 
+    CompositePartitionFunction::CompositePartitionFunction(const CompositePartitionFunction &other) {
+        m_partitionFunctions.reserve(other.m_partitionFunctions.size());
+        for (const auto& pf : other.m_partitionFunctions) {
+            m_partitionFunctions.push_back(pf->clone());
+        }
+    }
+
     double CompositePartitionFunction::evaluate(int z, int a, double T9) const {
         LOG_TRACE_L1(m_logger, "Evaluating partition function for Z={} A={} T9={}", z, a, T9);
         for (const auto& partitionFunction : m_partitionFunctions) {

src/network/lib/partition/partition_rauscher_thielemann.cpp

@@ -9,6 +9,7 @@
 #include <algorithm>
 #include <vector>
 #include <array>
+#include <iostream>
 
 namespace gridfire::partition {
     static constexpr std::array<double, 24> RT_TEMPERATURE_GRID_T9 = {
@@ -25,8 +26,17 @@ namespace gridfire::partition {
             IsotopeData data;
             data.ground_state_spin = record.ground_state_spin;
             std::ranges::copy(record.normalized_g_values, data.normalized_g_values.begin());
+            const int key = make_key(record.z, record.a);
+            LOG_TRACE_L3_LIMIT_EVERY_N(
+                100,
+                m_logger,
+                "(EVERY 100) Adding Rauscher-Thielemann partition data for Z={} A={} (key={})",
+                record.z,
+                record.a,
+                key
+            );
 
-            m_partitionData[make_key(record.z, record.a)] = std::move(data);
+            m_partitionData[key] = std::move(data);
         }
     }