Add personal dashboard flow and per-component website selection

This introduces a user-scoped dashboard with board-style view/edit pages while keeping it unavailable in team context, and moves website targeting to component config so dashboard components can each select their own website.

next.config.ts

@@ -116,6 +116,16 @@ if (collectApiEndpoint) {
 }
 
 const redirects = [
+  {
+    source: '/teams/:id/dashboard/edit',
+    destination: '/dashboard/edit',
+    permanent: false,
+  },
+  {
+    source: '/teams/:id/dashboard',
+    destination: '/dashboard',
+    permanent: false,
+  },
   {
     source: '/settings',
     destination: '/settings/preferences',