diff --git a/AGENTS.md b/AGENTS.md
index dd0e6b5..6c6776f 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -16,10 +16,13 @@ PYTHONPATH=. .venv/bin/pytest -m "not browser" --cov --cov-report=term-missing -
 git diff --check
 ```
 
-Also run `pytest -m browser` with CI's WebKit setup when available. On this
-Rocky host, the bundled WebKit cannot launch because of its system-library
-requirements. Use a rootless `podman` (or Docker) installation and network
-access to the Microsoft Playwright image to run WebKit in a matching container:
+Also run `pytest -m browser` with CI's WebKit setup. On this Rocky host, the
+bundled WebKit cannot launch because of its system-library requirements, but a
+rootless `podman` installation and network access to the Microsoft Playwright
+image are available. When working on this machine, presume that the
+containerized WebKit procedure below can be run and attempt it before using any
+fallback. A bundled-WebKit launch failure is not evidence that WebKit is
+unavailable.
 
 ```sh
 WEBKIT_VERSION="$(.venv/bin/python -c 'from importlib.metadata import version; print(version("playwright"))')"
@@ -34,8 +37,11 @@ podman stop driving-record-webkit
 
 The image and installed Python Playwright version must match because the
 run-server protocol is version-specific. `--network host` lets containerized
-WebKit reach the temporary `127.0.0.1` server created by the tests. If this
-setup is unavailable, state that limitation explicitly and run the project's
-configured Chromium fallback only when the test documents it.
+WebKit reach the temporary `127.0.0.1` server created by the tests. If sandbox
+permissions prevent loopback binding or Podman execution, request escalation
+and retry the same procedure. Use the project's configured Chromium fallback
+only after the containerized WebKit procedure has been attempted and failed;
+report the exact failing command and reason before doing so. If the procedure
+cannot be run after that retry, state the limitation explicitly.
 Inspect each PR's GitHub check results after pushing; distinguish a pre-existing
 or unrelated failure from one introduced by the branch with log evidence.
diff --git a/driving_log/static/app.js b/driving_log/static/app.js
index 5d02fab..66e7cf7 100644
--- a/driving_log/static/app.js
+++ b/driving_log/static/app.js
@@ -333,6 +333,33 @@
     });
   });
 
+  const driveGroups = document.querySelectorAll("details[data-drive-group-key]");
+  if (driveGroups.length) {
+    const storageKey = `driving-log:expanded-drive-groups:${location.pathname}${location.search}`;
+    let expanded = new Set();
+    try {
+      expanded = new Set(JSON.parse(sessionStorage.getItem(storageKey) || "[]"));
+    } catch (_) {
+      // Storage may be unavailable in private browsing or under a strict policy.
+    }
+    const saveExpanded = () => {
+      try {
+        sessionStorage.setItem(storageKey, JSON.stringify([...expanded]));
+      } catch (_) {
+        // The disclosure still works for this page when persistence is unavailable.
+      }
+    };
+    driveGroups.forEach(group => {
+      const key = group.dataset.driveGroupKey;
+      if (expanded.has(key)) group.open = true;
+      group.addEventListener("toggle", () => {
+        if (group.open) expanded.add(key);
+        else expanded.delete(key);
+        saveExpanded();
+      });
+    });
+  }
+
   document.querySelectorAll("[data-cancel-form]").forEach(link => {
     const form = document.getElementById(link.dataset.cancelForm);
     if (!form) return;
diff --git a/driving_log/templates/drives.html b/driving_log/templates/drives.html
index ffb2888..297b56e 100644
--- a/driving_log/templates/drives.html
+++ b/driving_log/templates/drives.html
@@ -80,7 +80,7 @@ <h1>Drive history</h1>
   {% if groups %}
     <div class="drive-groups">
       {% for group in groups %}
-        <details class="drive-group">
+        <details class="drive-group" data-drive-group-key="{{ group.key }}">
           <summary><span class="group-label">{{ group.label }}</span><small>{{ group.drives | length }} drive{{ "" if group.drives|length == 1 else "s" }} · {{ format_minutes(group.minutes) }} · {{ group.percentage }}% of total<br>{% if group.day_minutes and group.night_minutes %}{{ format_minutes(group.day_minutes) }} day · {{ format_minutes(group.night_minutes) }} night{% elif group.day_minutes %}{{ format_minutes(group.day_minutes) }} day{% else %}{{ format_minutes(group.night_minutes) }} night{% endif %}</small></summary>
           <div class="drive-list">{% for item in group.drives %}{{ drive_row(item) }}{% endfor %}</div>
         </details>
diff --git a/tests/test_browser.py b/tests/test_browser.py
index f18ff1b..ec66b93 100644
--- a/tests/test_browser.py
+++ b/tests/test_browser.py
@@ -485,6 +485,29 @@ def test_mobile_webkit_live_drive_recovery() -> None:
                 assert recovered.locator('input[name="acknowledge_warnings"]').count() == 0
                 assert recovered.locator('input[name="supervisor_dl_number"]').count() == 0
                 assert recovered.locator('input[name="supervisor_dl_state"]').count() == 0
+                recovered.get_by_role("button", name="Save completed drive").click()
+                recovered.get_by_role("heading", name="Student progress").wait_for()
+                for grouping in (
+                    "date",
+                    "supervisor",
+                    "day_night",
+                    "part_of_day",
+                    "road_type",
+                    "weather",
+                    "duration",
+                ):
+                    recovered.goto(f"{url}/drives?group_by={grouping}")
+                    group = recovered.locator("details[data-drive-group-key]").first
+                    group.locator("summary").click()
+                    assert group.get_attribute("open") == ""
+                    recovered.reload()
+                    recovered.get_by_role("heading", name="Drive history").wait_for()
+                    assert group.get_attribute("open") == ""
+                    group.locator(".drive-row").click()
+                    recovered.get_by_role("heading", name="Drive details").wait_for()
+                    recovered.go_back()
+                    recovered.get_by_role("heading", name="Drive history").wait_for()
+                    assert group.get_attribute("open") == ""
                 recovered.goto(f"{url}/dmv")
                 recovered.locator('select[name="display_name"]').select_option("Sean Ahern")
                 recovered.locator('input[name="dl_number"]').fill("SYNTHETIC-1234")