fix: address ask-user findings from review

- Move unit loading to use real /api/tickets/units endpoint
- Match unit code format to backend seed (0101E style)
- Send unit_id in create ticket payload
- Fix tech IDs to match seed order (9-15 for Prosper-Afful)
- Add customer_name and phone fields to TicketCreate schema
- Map form customer_name/phone into API payload

app/templates/tickets/detail.html

@@ -334,12 +334,13 @@
                     // Users list not exposed via API directly, so use a known list
                     // In a real system we'd have GET /api/users
                     this.technicians = [
-                        { id: 8, full_name: 'Prosper' },
-                        { id: 9, full_name: 'Sam' },
-                        { id: 10, full_name: 'Steven' },
-                        { id: 11, full_name: 'Junior (Samuel)' },
-                        { id: 12, full_name: 'Francis' },
-                        { id: 13, full_name: 'Desmond Afful' },
+                        { id: 9, full_name: 'Prosper' },
+                        { id: 10, full_name: 'Sam' },
+                        { id: 11, full_name: 'Steven' },
+                        { id: 12, full_name: 'Junior (Samuel)' },
+                        { id: 13, full_name: 'Francis' },
+                        { id: 14, full_name: 'Desmond Afful' },
+                        { id: 15, full_name: 'Afful' },
                     ];
                 } catch (e) { console.error('Tech load error', e); }
             },