Live-update the account page status block after sync

Mirrors the dashboard's row update: "Sync now" on the account page
refreshes the status block in place and shows a toast, instead of
navigating to a separate result page.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/web/templates/fragments/account_status.html

@@ -0,0 +1,13 @@
+<dl class="info-grid" id="account-status">
+    <dt>Status</dt>
+    <dd><span class="badge badge-{{ user.health_state.value }}">{{ user.health_state.value.replace("_", " ") }}</span></dd>
+
+    <dt>MyWhoosh state</dt>
+    <dd>{{ user.mywhoosh_state }}</dd>
+
+    <dt>Garmin state</dt>
+    <dd>{{ user.garmin_state }}</dd>
+
+    <dt>Action reason</dt>
+    <dd>{{ user.action_reason or "-" }}</dd>
+</dl>