fix(dashboard): read a widget's poll_seconds as an attribute, so a namespace defn renders (#5213)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

steward/templates/dashboard/_grid_item.html

@@ -20,7 +20,7 @@
     </div>
     <div class="dash-cell-body" id="widget-{{ item.db.id }}"
          hx-get="{{ item.hx_url }}"
-         hx-trigger="load, retry{% if item.defn.poll %}, every {{ item.defn.get('poll_seconds') or poll_interval }}s{% endif %}"
+         hx-trigger="load, retry{% if item.defn.poll %}, every {{ item.defn.poll_seconds or poll_interval }}s{% endif %}"
          hx-request='{"timeout": 20000}'
          data-poll="{{ '1' if item.defn.poll else '0' }}"
          hx-swap="innerHTML"><div class="cell-state">Loading…</div></div>

steward/templates/dashboard/share_view.html

@@ -51,7 +51,7 @@
       {# Pass share token as &s= param so require_role allows through #}
       <div class="dash-cell-body" id="widget-{{ gw.id }}"
            hx-get="{{ item.hx_url }}&s={{ raw_token }}"
-           hx-trigger="load, retry{% if item.defn.poll %}, every {{ item.defn.get('poll_seconds') or poll_interval }}s{% endif %}"
+           hx-trigger="load, retry{% if item.defn.poll %}, every {{ item.defn.poll_seconds or poll_interval }}s{% endif %}"
            hx-request='{"timeout": 20000}'
            data-poll="{{ '1' if item.defn.poll else '0' }}"
            hx-swap="innerHTML"><div class="cell-state">Loading…</div></div>