collapse dev tools into disclosure in admin sidebar

LiveDashboard, Errors, and Jobs are now behind a "Developer tools"
toggle, keeping View shop and Log out as the prominent footer links.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/berrypod_web/components/layouts/admin.html.heex

@@ -199,19 +199,29 @@
             </.link>
           </li>
           <li>
-            <.link href={~p"/admin/dashboard"}>
-              <.icon name="hero-chart-bar" class="size-5" /> LiveDashboard
-            </.link>
-          </li>
-          <li>
-            <.link href={~p"/admin/errors"}>
-              <.icon name="hero-bug-ant" class="size-5" /> Errors
-            </.link>
-          </li>
-          <li>
-            <.link href={~p"/admin/oban"}>
-              <.icon name="hero-queue-list" class="size-5" /> Jobs
-            </.link>
+            <details class="admin-dev-tools">
+              <summary>
+                <.icon name="hero-wrench-screwdriver" class="size-5" /> Developer tools
+                <.icon name="hero-chevron-right" class="size-4 admin-dev-tools-chevron" />
+              </summary>
+              <ul class="admin-nav">
+                <li>
+                  <.link href={~p"/admin/dashboard"}>
+                    <.icon name="hero-chart-bar" class="size-5" /> LiveDashboard
+                  </.link>
+                </li>
+                <li>
+                  <.link href={~p"/admin/errors"}>
+                    <.icon name="hero-bug-ant" class="size-5" /> Errors
+                  </.link>
+                </li>
+                <li>
+                  <.link href={~p"/admin/oban"}>
+                    <.icon name="hero-queue-list" class="size-5" /> Jobs
+                  </.link>
+                </li>
+              </ul>
+            </details>
           </li>
           <li>
             <.link href={~p"/users/log-out"} method="delete">