chore: sync project state and current artifacts

fix_equations.py

@@ -0,0 +1,14 @@
+with open('crates/components/src/python_components.rs', 'r') as f:
+    text = f.read()
+
+# Compressor: 2 ports -> 4 vars. Normally you expect 2 equations for outlet P, h given inlet, plus 2 for inlet (from elsewhere)
+# Actually, n_equations should be the number of residuals returned by the component.
+# Let's see how many residuals are set:
+# Compressor: residuals[0], residuals[1] -> 2
+# ExpansionValve: residuals[0], residuals[1] -> 2
+# HeatExchanger: residuals[0], residuals[1], residuals[2] -> 3
+# Pipe: residuals[0] -> 1
+# FlowSource: 0 (or should it be 2 if it sets P and T?) Wait, FlowSource sets 0 residuals?
+
+# Let's make FlowSource return 2 residuals (P, h) and FlowSink return 0. Wait, if FlowSource returns 0, who constrains the source?
+# If FlowSource sets P and H, it needs 2 residuals.