Lock nursing note shift from duty roster or clock.

Nurses can no longer pick a shift on the form; the server sets it from today's unit roster, falling back to the current clock window.

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

tests/Feature/CareMarAndNursingTest.php

@@ -195,11 +195,19 @@ class CareMarAndNursingTest extends TestCase
 
     public function test_nursing_note_and_handover(): void
     {
+        $this->travelTo(now()->setTime(16, 30));
+
+        $this->actingAs($this->owner)
+            ->get(route('care.care-units.notes', $this->unit))
+            ->assertOk()
+            ->assertSee('Evening shift')
+            ->assertDontSee('name="shift_code"', false);
+
         $this->actingAs($this->owner)
             ->post(route('care.care-units.notes.store', $this->unit), [
                 'visit_id' => $this->visit->id,
                 'note_type' => 'progress',
-                'shift_code' => 'day',
+                'shift_code' => 'night', // ignored — duty/clock sets shift
                 'body' => 'Vitals stable; pain controlled.',
             ])
             ->assertRedirect(route('care.care-units.notes', [$this->unit, 'visit' => $this->visit->id]));
@@ -207,6 +215,7 @@ class CareMarAndNursingTest extends TestCase
         $this->assertDatabaseHas('care_nursing_notes', [
             'visit_id' => $this->visit->id,
             'body' => 'Vitals stable; pain controlled.',
+            'shift_code' => 'evening',
         ]);
 
         $this->actingAs($this->owner)