Polish export handoff workflow

frontend/src/styles/app.css

@@ -1202,6 +1202,105 @@ button.entity-card {
   text-align: left;
 }
 
+.handoff-summary-card {
+  display: grid;
+  gap: 0.72rem;
+  margin-top: 0.8rem;
+  border: 1px solid rgba(15, 118, 110, 0.24);
+  border-radius: 8px;
+  padding: 0.85rem;
+  background: linear-gradient(180deg, #f5fbf8, #ffffff);
+}
+
+.handoff-summary-card .panel-title-row {
+  margin-bottom: 0;
+}
+
+.handoff-readiness-grid {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  gap: 0.55rem;
+}
+
+.handoff-readiness-grid > div {
+  min-width: 0;
+  border: 1px solid var(--line);
+  border-radius: 7px;
+  padding: 0.62rem;
+  background: #ffffff;
+}
+
+.handoff-readiness-grid span,
+.handoff-action-card span {
+  display: block;
+  color: var(--muted);
+  font-size: 0.68rem;
+  font-weight: 800;
+  letter-spacing: 0.05em;
+  text-transform: uppercase;
+}
+
+.handoff-readiness-grid strong,
+.handoff-action-card strong {
+  display: block;
+  margin-top: 0.22rem;
+  overflow: hidden;
+  font-size: 0.88rem;
+  line-height: 1.25;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.handoff-action-grid {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 0.6rem;
+  grid-column: 1 / -1;
+  width: 100%;
+}
+
+.handoff-action-card {
+  display: grid;
+  min-width: 0;
+  gap: 0.35rem;
+  border: 1px solid var(--line);
+  border-radius: 8px;
+  padding: 0.72rem;
+  background: #ffffff;
+}
+
+.handoff-action-card-primary {
+  border-color: rgba(15, 118, 110, 0.28);
+  background: var(--accent-soft);
+}
+
+.handoff-action-card p {
+  min-height: 2.55rem;
+  margin: 0;
+  color: var(--muted);
+  font-size: 0.84rem;
+  line-height: 1.36;
+}
+
+.handoff-action-card button {
+  width: 100%;
+  margin-top: 0;
+}
+
+.export-type-badge {
+  display: inline-flex;
+  max-width: 100%;
+  align-items: center;
+  border: 1px solid rgba(15, 118, 110, 0.22);
+  border-radius: 999px;
+  padding: 0.18rem 0.54rem;
+  background: var(--accent-soft);
+  color: var(--accent-strong);
+  font-size: 0.74rem;
+  font-weight: 850;
+  line-height: 1.2;
+}
+
 .latest-export-card {
   display: grid;
   gap: 0.2rem;
@@ -1575,8 +1674,10 @@ button.entity-card {
   .layer-provenance-rail,
   .lab-form-grid,
   .quality-summary-grid,
+  .handoff-readiness-grid,
   .quality-score-row,
   .export-action-grid,
+  .handoff-action-grid,
   .export-history-controls,
   .inspector-action-bar,
   .list-limit-banner {