feat(hosts): a host's page stays short — Docker folds past the busiest, monitors add on their own form, agent actions under Manage (#5276, #5277, #5278)

Docker panel (#5276): problems first, then the 8 busiest running
containers by CPU; the other running and the stopped fold behind one
"+N more running · M stopped" line. Containers that are not swarm tasks
read the way the Docker page reads them: CI jobs as "CI: workflow · job",
buildx builders as "BuildKit builder · name".

Monitors card (#5277): the edit/delete icon buttons and the inline add
form are gone. Each row links to its monitor's page; "Add monitor" opens
the add form filed under this host, starting from its address, with the
host in its breadcrumbs and Cancel back to it.

Agent card (#5278): Full metrics stays in view; Update, Rotate token,
Unregister agent (was "Remove") and Re-provision sit under "Manage agent".

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

plugins/docker/templates/docker/host_panel.html

@@ -1,27 +1,21 @@
 {# docker/host_panel.html — per-host Docker fragment embedded on the Hosts hub:
-   problems first with what is wrong and since when, then running, then
-   stopped. Tasks Swarm has replaced are left out (counted in the header). #}
+   problems first with what is wrong and since when, then the busiest running
+   containers; the rest of the running and the stopped fold away so the card
+   stays short (#5276). Tasks Swarm has replaced are left out (counted in the
+   header). #}
 {% from "_macros.html" import status_badge, status_dot %}
 {% from "docker/_usage.html" import cpu, mem %}
-<div class="card">
-  <div style="display:flex;align-items:baseline;justify-content:space-between;gap:0.6rem;margin-bottom:0.6rem;flex-wrap:wrap;">
-    <h3 class="section-title" style="margin-bottom:0;">Docker</h3>
-    <span style="font-size:0.78rem;color:var(--text-muted);">
-      {% if problems %}<span class="tone-crit">{{ problems }} with problems</span> · {% endif %}
-      {{ running }} running{% if stopped %} · {{ stopped }} stopped{% endif %}
-      {% if replaced %}<span title="Old swarm tasks Swarm has replaced with new ones: history, not containers that need anything"> · {{ replaced }} replaced task{{ "s" if replaced != 1 }} hidden</span>{% endif %}
-      <a href="/plugins/docker/" style="margin-left:0.6rem;color:var(--text-muted);">All →</a>
-    </span>
-  </div>
-  <table class="table">
-    <thead>
-      <tr>
-        <th>Container</th>
-        <th title="Docker counts CPU per core: 1 core = one core fully busy">CPU</th>
-        <th title="Used, and the limit when one is set">Memory</th>
-      </tr>
-    </thead>
-    <tbody>
+{% macro container_table(rows) %}
+<table class="table">
+  <colgroup><col><col style="width:7rem"><col style="width:9rem"></colgroup>
+  <thead>
+    <tr>
+      <th>Container</th>
+      <th title="Docker counts CPU per core: 1 core = one core fully busy">CPU</th>
+      <th title="Used, and the limit when one is set">Memory</th>
+    </tr>
+  </thead>
+  <tbody>
       {% for r in rows %}
       {% set c = r.c %}
       <tr>
@@ -53,6 +47,30 @@
         <td style="font-family:ui-monospace,monospace;font-size:0.85rem;white-space:nowrap;">{% if c.status == 'running' %}{{ mem(r.usage) }}{% else %}<span class="tone-dim">—</span>{% endif %}</td>
       </tr>
       {% endfor %}
-    </tbody>
-  </table>
+  </tbody>
+</table>
+{% endmacro %}
+<div class="card">
+  <div style="display:flex;align-items:baseline;justify-content:space-between;gap:0.6rem;margin-bottom:0.6rem;flex-wrap:wrap;">
+    <h3 class="section-title" style="margin-bottom:0;">Docker</h3>
+    <span style="font-size:0.78rem;color:var(--text-muted);">
+      {% if problems %}<span class="tone-crit">{{ problems }} with problems</span> · {% endif %}
+      {{ running }} running{% if stopped %} · {{ stopped }} stopped{% endif %}
+      {% if replaced %}<span title="Old swarm tasks Swarm has replaced with new ones: history, not containers that need anything"> · {{ replaced }} replaced task{{ "s" if replaced != 1 }} hidden</span>{% endif %}
+      <a href="/plugins/docker/" style="margin-left:0.6rem;color:var(--text-muted);">All →</a>
+    </span>
+  </div>
+  {{ container_table(rows) }}
+  {% if folded %}
+  <details style="margin-top:0.5rem;">
+    <summary style="cursor:pointer;font-size:0.82rem;color:var(--text-muted);">
+      {%- set more_running = folded|selectattr("c.status", "equalto", "running")|list|length -%}
+      {%- set more_stopped = folded|length - more_running -%}
+      {%- if more_running %}+{{ more_running }} more running{% endif -%}
+      {%- if more_running and more_stopped %} · {% endif -%}
+      {%- if more_stopped %}{{ more_stopped }} stopped{% endif -%}
+    </summary>
+    {{ container_table(folded) }}
+  </details>
+  {% endif %}
 </div>