Add pi_unet metrics

results/pi_unet_fullres_results.json

@@ -0,0 +1,32 @@
+{
+  "experiment": "PI-U-Net Full-Resolution",
+  "model": {
+    "architecture": "PI-U-Net",
+    "parameters": 343525
+  },
+  "physical_metrics": {
+    "temperature": {
+      "MAE_C": 0.24366550244546184,
+      "R2": 0.9311851902272924
+    },
+    "velocity_x": {
+      "MAE_ms": 0.033682880127290274,
+      "R2": 0.9900086990652559
+    },
+    "velocity_y": {
+      "MAE_ms": 0.04517341264088171,
+      "R2": 0.9957785841476485
+    },
+    "velocity_z": {
+      "MAE_ms": 0.055183616169728354,
+      "R2": 0.9826566200345322
+    },
+    "pressure": {
+      "MAE_Pa": 0.09853558068043393,
+      "R2": 0.9975471384433363
+    }
+  },
+  "inference": {
+    "latency_mean_ms": 172.35269797965884
+  }
+}