Show booked lesson info on upcoming lists and add admin booking detail

Front end: the student "upcoming lessons" panel now shows each booked
offering's name and length next to the time, and renders only the soonest
five lessons with a "Show all" reveal. GET /bookings returns offering_title
and duration_minutes so the list needs no extra request.

Admin: the Scheduler and My Lessons week/list views now show the booked
offering, and each lesson links to a detail view showing the policy versions
the student accepted (with acceptance time and IP) and their intake answers.
On My Lessons an instructor may only open their own lessons; the studio
Scheduler may open any.

composer test / composer lint / composer cs all pass.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

src/Booking/BookingEndpoint.php

@@ -123,17 +123,27 @@ class BookingEndpoint {
 	}
 
 	/**
-	 * A lesson's array form plus its slot's start/end times, so front-end lists
-	 * can show when the session happens without a second request.
+	 * A lesson's array form plus its slot's start/end times and the booked
+	 * offering's name, so front-end lists can show what the session is and when
+	 * it happens without a second request.
 	 *
 	 * @return array<string, mixed>
 	 */
 	private function lessonWithTimes( Lesson $lesson ): array {
-		$slot = $this->availability->findById( $lesson->slotId );
+		$slot     = $this->availability->findById( $lesson->slotId );
+		$offering = null !== $lesson->offeringId ? $this->offerings->findById( $lesson->offeringId ) : null;
+
+		// Prefer the offering's own length; fall back to the slot's when the
+		// offering has none (a generic, duration-less type).
+		$duration = null !== $offering && null !== $offering->durationMinutes
+			? $offering->durationMinutes
+			: $slot?->durationMinutes;
 
 		return $lesson->toArray() + [
-			'start_dt' => $slot?->startDt,
-			'end_dt'   => $slot?->endDt,
+			'start_dt'         => $slot?->startDt,
+			'end_dt'           => $slot?->endDt,
+			'offering_title'   => $offering?->title,
+			'duration_minutes' => $duration,
 		];
 	}