feat(rental): add inventory and condition reports (#7)

frontend/src/app/components/lease-end-page/lease-end-page.ts

@@ -84,6 +84,11 @@ export class LeaseEndPage {
       (state.phase === 'AWAITING_CLOSURE' || state.phase === 'UNAUTHORIZED_OCCUPANCY')
     );
   });
+  readonly exitReportDate = computed(() => {
+    const report = this.state()?.exitConditionReport;
+    return report?.finalized ? report.occurredOn : null;
+  });
+  readonly closureReady = computed(() => this.canClose() && !!this.exitReportDate());
 
   readonly civilDate = formatFrenchCivilDate;
   readonly civilMonth = formatFrenchCivilMonth;