Separate unit placements from shift duty assignments.

Roster no longer writes temporary staff assignments; unit assignment UI drops shift fields and labels clarify the two workflows.

Co-authored-by: Cursor <cursoragent@cursor.com>

resources/views/care/admin/care-units/show.blade.php

@@ -35,7 +35,7 @@
                     <a href="{{ route('care.care-units.mar', $unit) }}" class="btn-primary">MAR board</a>
                 @endif
                 @if ($canRoster)
-                    <a href="{{ route('care.care-units.roster', $unit) }}" class="btn-secondary">Duty roster</a>
+                    <a href="{{ route('care.care-units.roster', $unit) }}" class="btn-secondary">Shift assignments</a>
                 @endif
                 @if ($canAssess)
                     <a href="{{ route('care.care-units.assessments', $unit) }}" class="btn-secondary">Assessments</a>
@@ -51,7 +51,7 @@
                 @endif
                 @if ($canManageUnit)
                     <a href="{{ route('care.care-units.edit', $unit) }}" class="btn-secondary">Edit unit</a>
-                    <a href="{{ route('care.staff-assignments.create', ['care_unit_id' => $unit->id]) }}" class="btn-secondary">Assign staff</a>
+                    <a href="{{ route('care.staff-assignments.create', ['care_unit_id' => $unit->id]) }}" class="btn-secondary">Unit assignment</a>
                 @endif
             </div>
         </div>