Never drop an enrolled class from upcoming lessons; delete a guardian's children with them; pin the panel's line spacing

Three fixes from testing the branch.

A group class was only listed when its schedule resolved to exact
datetimes, which needs a class time *and* a duration — both optional on
the offering form, and the schedule note exists precisely so a studio can
write "Tuesdays 4:00pm" instead. A class configured that way vanished
from the list, which is the one thing this feature must never do. So
Offering::sessionStarts() splits "when does it meet" from "how long does
it run" (sessionWindows() is that plus the duration, unchanged), and
SessionSchedule degrades instead of disappearing: dated rows with an open
end when there is no duration, and a single row carrying
Offering::scheduleLabel() when there is no time to derive dates from.
Only a class whose last day has passed drops out.

Deleting a guardian now deletes the children linked to them, releasing
each one's lessons and enrolments first. A child account is login-less
and exists only so the guardian has somebody to book for; without the
guardian nobody can reach it, book for it, or be billed for it, so it was
left stranded on the roster still holding slots. A `handled` set makes
the re-entrant delete_user each child deletion fires a no-op, and stops a
circular link recursing.

The upcoming panel never stated its own line-height, so a theme setting
line-height: 0 above it — the usual icon-font reset — was inherited
straight through. Below 1 that produces both reported symptoms at once:
stacked lines overlap, and the status pill's background is shorter than
the text in it. Pinned at the same id-level specificity as the rest.

Tests: composer test (863), composer lint, composer cs all pass.

Co-Authored-By: Claude Opus 5 <[email protected]>

tests/Unit/GroupClass/SessionScheduleTest.php

@@ -3,6 +3,7 @@ declare(strict_types=1);
 
 namespace Unsupervised\Schedular\Tests\Unit\GroupClass;
 
+use Brain\Monkey\Functions;
 use Mockery;
 use Unsupervised\Schedular\GroupClass\Enrollment;
 use Unsupervised\Schedular\GroupClass\EnrollmentRepository;
@@ -56,6 +57,7 @@ class SessionScheduleTest extends TestCase
             array_column($rows, 'start_dt')
         );
         self::assertSame('2026-09-08 17:00:00', $rows[0]['end_dt']);
+        self::assertNull($rows[0]['schedule']);
         self::assertSame('Choir', $rows[0]['offering_title']);
         self::assertSame(40, $rows[0]['enrollment_id']);
         self::assertSame(3, $rows[0]['instructor_id']);
@@ -115,26 +117,132 @@ class SessionScheduleTest extends TestCase
     }
 
     /**
-     * A class with no time set has no derivable sessions, so it is left out of a
-     * dated list rather than shown at a time nobody chose.
+     * Both the class time and the duration are optional on the offering form, and
+     * the schedule note exists so a studio can say "Tuesdays 4:00pm" instead of
+     * pinning the class to a clock. A class configured that way used to vanish
+     * from the list entirely — the bug this covers. It now gets one row carrying
+     * the note in place of a date.
      */
-    public function testAClassWithoutAScheduleYieldsNoRows(): void
+    public function testAClassWithNoClassTimeStillGetsARowDescribedInWords(): void
     {
-        $undated = new Offering(
+        $this->enrollments->shouldReceive('findByStudent')->with(5)->andReturn([
+            new Enrollment(offeringId: 8, studentId: 5, instructorId: 3, id: 40),
+        ]);
+        $this->offerings->shouldReceive('findById')->with(8)->andReturn(new Offering(
             instructorId:    3,
             kind:            Offering::KIND_GROUP_CLASS,
             title:           'Choir',
             durationMinutes: 60,
             termStart:       '2026-09-08',
+            termEnd:         '2026-12-08',
+            scheduleNote:    'Tuesdays 4:00pm',
             id:              8,
+        ));
+
+        $rows = $this->schedule->upcomingForStudent(5, '2026-09-01 00:00:00');
+
+        self::assertCount(1, $rows);
+        self::assertSame('Tuesdays 4:00pm', $rows[0]['schedule']);
+        self::assertSame('Choir', $rows[0]['offering_title']);
+        // A sort key, not a claim about the time: the class has not started yet,
+        // so it sorts to its first day.
+        self::assertSame('2026-09-08 00:00:00', $rows[0]['start_dt']);
+        self::assertSame('', $rows[0]['end_dt']);
+    }
+
+    /** Without a note, the term dates do the describing. */
+    public function testAnUndatedClassFallsBackToItsTermDates(): void
+    {
+        Functions\when('mysql2date')->alias(
+            static fn (string $format, string $date): string => date($format, (int) strtotime($date))
         );
 
         $this->enrollments->shouldReceive('findByStudent')->with(5)->andReturn([
             new Enrollment(offeringId: 8, studentId: 5, instructorId: 3, id: 40),
         ]);
-        $this->offerings->shouldReceive('findById')->with(8)->andReturn($undated);
+        $this->offerings->shouldReceive('findById')->with(8)->andReturn(new Offering(
+            instructorId: 3,
+            kind:         Offering::KIND_GROUP_CLASS,
+            title:        'Choir',
+            termStart:    '2026-09-08',
+            termEnd:      '2026-12-08',
+            id:           8,
+        ));
 
-        self::assertSame([], $this->schedule->upcomingForStudent(5, '2026-09-01 00:00:00'));
+        $rows = $this->schedule->upcomingForStudent(5, '2026-09-01 00:00:00');
+
+        self::assertSame('Sep 8, 2026 – Dec 8, 2026', $rows[0]['schedule']);
+    }
+
+    /**
+     * A term already under way sorts to "now" rather than to a start date in the
+     * past, so an ongoing class reads as current instead of dropping to the
+     * bottom of a list ordered by time.
+     */
+    public function testAnUndatedClassAlreadyUnderWaySortsToNow(): void
+    {
+        $this->enrollments->shouldReceive('findByStudent')->with(5)->andReturn([
+            new Enrollment(offeringId: 8, studentId: 5, instructorId: 3, id: 40),
+        ]);
+        $this->offerings->shouldReceive('findById')->with(8)->andReturn(new Offering(
+            instructorId: 3,
+            kind:         Offering::KIND_GROUP_CLASS,
+            title:        'Choir',
+            termStart:    '2026-09-08',
+            termEnd:      '2026-12-08',
+            scheduleNote: 'Tuesdays 4:00pm',
+            id:           8,
+        ));
+
+        $rows = $this->schedule->upcomingForStudent(5, '2026-10-01 09:00:00');
+
+        self::assertSame('2026-10-01 09:00:00', $rows[0]['start_dt']);
+    }
+
+    /** An undated class whose last day has passed is over, and drops out. */
+    public function testAnUndatedClassThatHasFinishedIsDropped(): void
+    {
+        $this->enrollments->shouldReceive('findByStudent')->with(5)->andReturn([
+            new Enrollment(offeringId: 8, studentId: 5, instructorId: 3, id: 40),
+        ]);
+        $this->offerings->shouldReceive('findById')->with(8)->andReturn(new Offering(
+            instructorId: 3,
+            kind:         Offering::KIND_GROUP_CLASS,
+            title:        'Choir',
+            termStart:    '2026-09-08',
+            termEnd:      '2026-12-08',
+            scheduleNote: 'Tuesdays 4:00pm',
+            id:           8,
+        ));
+
+        self::assertSame([], $this->schedule->upcomingForStudent(5, '2026-12-09 00:00:00'));
+    }
+
+    /**
+     * A class time but no duration: the dates are still known, so they are still
+     * listed — the row just says when it starts and not when it ends, rather than
+     * inventing a finish.
+     */
+    public function testAClassWithNoDurationKeepsItsDatesAndLeavesTheEndOpen(): void
+    {
+        $this->enrollments->shouldReceive('findByStudent')->with(5)->andReturn([
+            new Enrollment(offeringId: 8, studentId: 5, instructorId: 3, id: 40),
+        ]);
+        $this->offerings->shouldReceive('findById')->with(8)->andReturn(new Offering(
+            instructorId: 3,
+            kind:         Offering::KIND_GROUP_CLASS,
+            title:        'Choir',
+            termStart:    '2026-09-08',
+            termEnd:      '2026-09-15',
+            classTime:    '16:00:00',
+            id:           8,
+        ));
+
+        $rows = $this->schedule->upcomingForStudent(5, '2026-09-01 00:00:00');
+
+        self::assertSame(['2026-09-08 16:00:00', '2026-09-15 16:00:00'], array_column($rows, 'start_dt'));
+        self::assertSame(['', ''], array_column($rows, 'end_dt'));
+        self::assertNull($rows[0]['schedule']);
     }
 
     public function testADeletedOfferingIsSkippedRatherThanFatal(): void