Always show signed up shifts on the schedule

templates/volunteer/_schedule_filters.html

@@ -55,13 +55,15 @@ <h3>Filters</h3>
                 />
                 Show shifts in the past
             </label>
+            {% if not is_admin %}
             <label class="checkbox">
                 <input
                     type="checkbox"
                     id="show_signed_up_only"
                 />
                 Show my shifts
             </label>
+            {% endif %}
             <label class="checkbox">
                 <input
                     type="checkbox"

tests/volunteer/test_schedule_filters.py

@@ -0,0 +1,31 @@
+"""Tests for volunteer schedule filter visibility."""
+
+
+def test_show_my_shifts_filter_hidden_for_admin():
+    """Volunteer admins should not see the 'Show my shifts' filter."""
+    from main import create_app
+
+    app = create_app()
+    with app.test_request_context("/"):
+        from flask import render_template_string
+
+        result = render_template_string(
+            "{% from 'volunteer/_schedule_filters.html' import vol_schedule_filters %}"
+            "{{ vol_schedule_filters([], is_admin=True) }}"
+        )
+        assert "show_signed_up_only" not in result
+
+
+def test_show_my_shifts_filter_visible_for_non_admin():
+    """Regular volunteers should see the 'Show my shifts' filter."""
+    from main import create_app
+
+    app = create_app()
+    with app.test_request_context("/"):
+        from flask import render_template_string
+
+        result = render_template_string(
+            "{% from 'volunteer/_schedule_filters.html' import vol_schedule_filters %}"
+            "{{ vol_schedule_filters([], is_admin=False) }}"
+        )
+        assert "show_signed_up_only" in result