Add schedule and unit list templates for project management

- Created `schedule_list.html` to display scheduled actions with execution status, location, and timestamps.
- Implemented buttons for executing and canceling schedules, along with a details view placeholder.
- Created `unit_list.html` to show assigned units with their status, location, model, and session/file counts.
- Added conditional rendering for active sessions and links to view unit and location details.

templates/partials/projects/session_list.html

@@ -44,10 +44,10 @@
                             <span class="ml-1">{{ item.session.started_at.strftime('%Y-%m-%d %H:%M') if item.session.started_at else 'N/A' }}</span>
                         </div>
 
-                        {% if item.session.ended_at %}
+                        {% if item.session.stopped_at %}
                         <div>
                             <span class="text-xs text-gray-500">Ended:</span>
-                            <span class="ml-1">{{ item.session.ended_at.strftime('%Y-%m-%d %H:%M') }}</span>
+                            <span class="ml-1">{{ item.session.stopped_at.strftime('%Y-%m-%d %H:%M') }}</span>
                         </div>
                         {% endif %}