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]>

assets/css/frontend.css

@@ -46,6 +46,26 @@
     display: flex;
     justify-content: space-between;
     align-items: center;
+    gap: 12px;
+}
+
+.us-my-lesson-info {
+    display: flex;
+    flex-direction: column;
+    gap: 2px;
+}
+
+.us-my-lesson-title {
+    font-size: 1.05em;
+}
+
+.us-my-lesson-duration {
+    font-weight: normal;
+    color: #666;
+}
+
+.us-my-lesson-when {
+    color: #555;
 }
 
 .us-my-lesson-actions {
@@ -54,6 +74,18 @@
     align-items: center;
 }
 
+.us-show-all-lessons {
+    background: transparent;
+    border: 1px solid #ccc;
+    border-radius: 4px;
+    padding: 6px 14px;
+    cursor: pointer;
+}
+
+.us-show-all-lessons:hover {
+    border-color: #888;
+}
+
 .us-cancel-lesson {
     background: transparent;
     border: 1px solid #ccc;