(ui) Group host detail actions by context

Move host-level actions out of the page header and into the panels where
operators expect them: configuration, connection preflight, and snapshot
storage. This keeps the host control page calmer while preserving the same
actions.

Refs #26

src/pobsync_backend/templates/pobsync_backend/base.html

@@ -241,6 +241,13 @@
 	    .stack { display: grid; gap: 5px; }
 	    .stack.spaced { margin-bottom: 14px; }
 	    .two-col { display: grid; gap: 18px; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
+	    .panel-grid {
+	      display: grid;
+	      gap: 18px;
+	      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
+	      margin-bottom: 18px;
+	    }
+	    .panel-grid .panel { margin-bottom: 0; }
 	    .actions {
 	      align-items: center;
 	      display: flex;
@@ -676,7 +683,8 @@
 	        display: grid;
 	      }
 	      .page-header .actions { justify-content: flex-start; }
-	      .two-col { grid-template-columns: 1fr; }
+	      .two-col,
+	      .panel-grid { grid-template-columns: 1fr; }
       .dashboard-priority-grid { grid-template-columns: 1fr; }
       .host-control-grid { grid-template-columns: 1fr; }
       .schedule-row { grid-template-columns: 1fr; }

src/pobsync_backend/templates/pobsync_backend/host_detail.html

@@ -9,27 +9,6 @@
       <h1>{{ host.host }}</h1>
       <div class="page-subtitle">{{ host.address }} · {{ host.enabled|yesno:"enabled,disabled" }}</div>
     </div>
-    <section class="actions" aria-label="Host actions">
-      <a class="button-link" href="{% url 'edit_host_config' host.host %}">Edit config</a>
-      <form method="post" action="{% url 'discover_host_snapshots' host.host %}">
-        {% csrf_token %}
-        <button type="submit">Discover snapshots</button>
-      </form>
-      <a class="button-link" href="{% url 'host_retention_plan' host.host %}">Plan retention</a>
-      <a class="button-link" href="{% url 'edit_host_schedule' host.host %}">Edit schedule</a>
-      <form method="post" action="{% url 'prepare_host_directories' host.host %}">
-        {% csrf_token %}
-        <button type="submit" class="secondary">Prepare directories</button>
-      </form>
-      <form method="post" action="{% url 'scan_host_known_key' host.host %}">
-        {% csrf_token %}
-        <button type="submit" class="secondary">Scan SSH host key</button>
-      </form>
-      <form method="post" action="{% url 'run_host_preflight' host.host %}">
-        {% csrf_token %}
-        <button type="submit" class="secondary">Run connection preflight</button>
-      </form>
-    </section>
   </header>
 
   {% if retention_warning.has_warning %}
@@ -144,7 +123,7 @@
     </article>
 
     <article class="panel host-control-panel">
-      <h2>Schedule <a class="button-link secondary compact" href="{% url 'edit_host_schedule' host.host %}">Edit</a></h2>
+      <h2>Schedule <a class="button-link secondary compact" href="{% url 'edit_host_schedule' host.host %}">Edit schedule</a></h2>
       {% if schedule %}
         <div class="host-control-meta">
           <div><span class="label">Schedule expression</span><strong>{{ schedule.cron_expr }}</strong></div>
@@ -272,39 +251,7 @@
     </table>
   </section>
 
-  {% if last_preflight %}
+  <div class="panel-grid">
-    <section class="panel">
-      <h2>Connection Preflight</h2>
-      <div class="stack spaced">
-        <div><strong>Status:</strong> <span class="status {% if last_preflight.ok %}ok{% else %}failed{% endif %}">{% if last_preflight.ok %}ok{% else %}failed{% endif %}</span></div>
-        <div><strong>Target:</strong> {{ last_preflight.target }}</div>
-        <div><strong>Backup source:</strong> {{ last_preflight.source_root }}</div>
-        <div><strong>Remote rsync:</strong> {{ last_preflight.rsync_binary }}</div>
-      </div>
-      <table>
-        <thead>
-          <tr>
-            <th>Status</th>
-            <th>Check</th>
-            <th>Message</th>
-            <th>Detail</th>
-          </tr>
-        </thead>
-        <tbody>
-          {% for check in last_preflight.checks %}
-            <tr>
-              <td><span class="status {% if check.ok %}ok{% else %}failed{% endif %}">{% if check.ok %}ok{% else %}failed{% endif %}</span></td>
-              <td>{{ check.name }}</td>
-              <td>{{ check.message }}</td>
-              <td class="muted">{{ check.detail }}</td>
-            </tr>
-          {% endfor %}
-        </tbody>
-      </table>
-    </section>
-  {% endif %}
-
-  <div class="two-col">
     <section class="panel">
       <h2>Configuration</h2>
       <div class="host-control-meta">
@@ -316,9 +263,56 @@
       </div>
       <div class="actions inline">
         <a class="button-link secondary compact" href="{% url 'edit_host_config' host.host %}">Edit config</a>
+        <a class="button-link secondary compact" href="{% url 'host_retention_plan' host.host %}">Plan retention</a>
       </div>
     </section>
 
+    <section class="panel">
+      <h2>Connection Preflight &amp; SSH</h2>
+      {% if last_preflight %}
+        <div class="host-control-meta">
+          <div>
+            <span class="label">Preflight</span>
+            <strong>
+              <span class="status {% if last_preflight.ok %}ok{% else %}failed{% endif %}">
+                {% if last_preflight.ok %}ok{% else %}failed{% endif %}
+              </span>
+            </strong>
+          </div>
+          <div><span class="label">Target</span><strong>{{ last_preflight.target }}</strong></div>
+          <div><span class="label">Backup source</span><strong>{{ last_preflight.source_root }}</strong></div>
+          <div><span class="label">Remote rsync</span><strong>{{ last_preflight.rsync_binary }}</strong></div>
+        </div>
+      {% else %}
+        <p class="muted">No connection preflight recorded yet.</p>
+      {% endif %}
+      <div class="actions inline">
+        <form method="post" action="{% url 'run_host_preflight' host.host %}">
+          {% csrf_token %}
+          <button type="submit" class="secondary compact">Run connection preflight</button>
+        </form>
+        <form method="post" action="{% url 'scan_host_known_key' host.host %}">
+          {% csrf_token %}
+          <button type="submit" class="secondary compact">Scan SSH host key</button>
+        </form>
+      </div>
+      {% if last_preflight.checks %}
+        <div class="activity-list">
+          {% for check in last_preflight.checks %}
+            <div class="activity-row">
+              <span class="status {% if check.ok %}ok{% else %}failed{% endif %}">
+                {% if check.ok %}ok{% else %}failed{% endif %}
+              </span>
+              <span>
+                <strong>{{ check.name }}</strong>
+                <span class="muted">{{ check.message }}{% if check.detail %} · {{ check.detail }}{% endif %}</span>
+              </span>
+            </div>
+          {% endfor %}
+        </div>
+      {% endif %}
+    </section>
+
     <section class="panel">
       <h2>Snapshot Storage</h2>
       <div class="host-control-meta">