feat(trigger): added working robust repartitioning trigger system

more work is needed to identify the most robust set of criteria to trigger on but the system is now very easy to exend, probe, and use.

src/include/gridfire/engine/views/engine_multiscale.h

@@ -57,9 +57,9 @@ namespace gridfire {
 
         // TODO: We should probably sort out how to adjust these from absolute to relative tolerances.
         QSECacheConfig m_cacheConfig = {
-            1e-3, // Default tolerance for T9
-            1e-1, // Default tolerance for rho
-            1e-3  // Default tolerance for species abundances
+            1e-10, // Default tolerance for T9
+            1e-10, // Default tolerance for rho
+            1e-10  // Default tolerance for species abundances
         };
 
         /**
@@ -763,7 +763,7 @@ namespace gridfire {
 
             std::string toString() const;
 
-            std::string toString(DynamicEngine &engine) const;
+            std::string toString(const DynamicEngine &engine) const;
         };
 
         /**
@@ -989,6 +989,11 @@ namespace gridfire {
          * @brief Species that are treated as algebraic (in QSE) in the QSE groups.
          */
         std::vector<fourdst::atomic::Species> m_algebraic_species;
+
+        /**
+         * @breif Stateful storage of the current algebraic species abundances. This is updated every time the update method is called.
+         */
+        std::vector<double> m_Y_algebraic;
         /**
          * @brief Indices of algebraic species in the full network.
          */
@@ -1003,7 +1008,6 @@ namespace gridfire {
          */
         std::vector<size_t> m_activeReactionIndices;
 
-        // TODO: Enhance the hashing for the cache to consider not just T and rho but also the current abundance in some careful way that automatically ignores small changes (i.e. network should only be repartitioned sometimes)
         /**
          * @brief Cache for QSE abundances based on T9, rho, and Y.
          *