{# Deep-first instrument summary table — the `instr_table` panel payload
   (kind="table").  Serials link to per-instrument reports when they exist. #}
<table class="instr-table">
  <thead><tr><th>#</th><th>Type</th><th>Serial</th><th>HAB (m)</th><th>~Depth (m)</th></tr></thead>
  <tbody>
  {% for row in instr_rows %}
  <tr>
    <td>{{ loop.index0 }}</td>
    <td>{{ row.instr_type }}</td>
    <td>{% if row.report_exists %}<a href="{{ row.report_href }}">{{ row.serial }}</a>{% else %}{{ row.serial }}{% endif %}</td>
    <td>{{ row.hab }}</td>
    <td>{{ row.depth }}</td>
  </tr>
  {% endfor %}
  </tbody>
</table>