Fix booking summary end time and enhance calendar event management

**Issue 1: Fix end time display in booking summary**
- Now correctly shows start_time + slot_duration instead of just start_time
- Example: 09:30 → 10:00 for 1 slot (30 mins)

**Issue 2: Confirm create-google-meet-event uses consulting_sessions**
- Verified: Function already updates consulting_sessions table
- The data shown is from OLD consulting_slots table (needs migration)

**Issue 3: Delete calendar events when order is deleted**
- Enhanced delete-order function to delete calendar events before removing order
- Calls delete-calendar-event for each session with calendar_event_id

**Issue 4: Admin can now edit session time and manage calendar events**
- Added time editing inputs (start/end time) in admin dialog
- Added "Delete Link & Calendar Event" button to remove meet link
- Shows calendar event connection status (✓ Event Kalender: Terhubung)
- "Regenerate Link" button creates new meet link + calendar event
- Recalculates session duration when time changes

**Issue 5: Enhanced calendar event description**
- Now includes: Kategori, Client email, Catatan, Session ID
- Format: "Kategori: {topic}\n\nClient: {email}\n\nCatatan: {notes}\n\nSession ID: {id}"

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/pages/ConsultingBooking.tsx

@@ -650,7 +650,13 @@ export default function ConsultingBooking() {
 
                         <div className="text-right">
                           <p className="text-xs text-muted-foreground">Selesai</p>
-                          <p className="font-bold text-lg">{selectedRange.end}</p>
+                          <p className="font-bold text-lg">
+                            {(() => {
+                              const start = parse(selectedRange.end, 'HH:mm', new Date());
+                              const end = addMinutes(start, settings?.consulting_block_duration_minutes || 30);
+                              return format(end, 'HH:mm');
+                            })()}
+                          </p>
                         </div>
                       </div>