Add default_device config option per model family

When landing on a page or switching families, the device filter defaults
to the family's configured default_device if available. Set to
orin_nano for Cosmos-Reason2 and agx_orin for Qwen3.5.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

app.js

@@ -355,7 +355,14 @@ function updateDependentFilters() {
         }
         const strVals = vals.map(String);
         if (!strVals.includes(String(filters[f.column]))) {
-            filters[f.column] = vals[0] ?? "";
+            // Prefer family-specific default_device when resetting the device filter
+            const familyCfg = config.model_families?.[activeFamilyKey()] || {};
+            const defaultVal = f.column === GROUP_BY && familyCfg.default_device;
+            if (defaultVal && strVals.includes(String(defaultVal))) {
+                filters[f.column] = defaultVal;
+            } else {
+                filters[f.column] = vals[0] ?? "";
+            }
         }
 
         // For the group_by filter, add "All" option

config.json

@@ -137,7 +137,8 @@
         "agx_thor": "Measurement setup: NVIDIA vLLM 26.01, 256 tokens generated, 10 warm-up runs, averaged over 25 runs.",
         "agx_orin": "Measurement setup: NVIDIA AI IoT vLLM 0.14.0 tegra, 256 tokens generated, 10 warm-up runs, averaged over 25 runs.",
         "orin_nano": "Measurement setup: NVIDIA AI IoT vLLM 0.14.0 tegra, 256 tokens generated, 10 warm-up runs, averaged over 25 runs."
-      }
+      },
+      "default_device": "orin_nano"
     },
     "Qwen3.5": {
       "data_file": "data/Qwen3.5.csv",
@@ -149,7 +150,8 @@
         "agx_thor": "Measurement setup: NVIDIA AI IoT vLLM 0.16.0 arm64, 256 tokens generated, 10 warm-up runs, averaged over 25 runs.",
         "agx_orin": "Measurement setup: NVIDIA AI IoT vLLM 0.16.0 tegra, 256 tokens generated, 10 warm-up runs, averaged over 25 runs.",
         "orin_nano": "Measurement setup: NVIDIA AI IoT vLLM 0.16.0 tegra, 256 tokens generated, 10 warm-up runs, averaged over 25 runs."
-      }
+      },
+      "default_device": "agx_orin"
     }
   }
 }