feat: scaffold personal progress monitor MVP

config/layouts/task-detail.json

@@ -0,0 +1,16 @@
+{
+  "schemaVersion": 1,
+  "page": "task-detail",
+  "regions": {
+    "sidebar": [
+      { "component": "task-list" }
+    ],
+    "main": [
+      { "component": "task-header" },
+      { "component": "today-record" },
+      { "component": "metric-progress" },
+      { "component": "activity-heatmap", "options": { "historyDays": 365 } },
+      { "component": "task-settings" }
+    ]
+  }
+}