Add map feature extraction workflow

frontend/src/styles/app.css

@@ -2599,6 +2599,92 @@ button.entity-card {
   margin-bottom: 0.75rem;
 }
 
+.feature-extract-surface {
+  display: grid;
+  gap: 0.7rem;
+  min-width: 0;
+  margin-bottom: 0.85rem;
+  border: 1px solid rgba(15, 118, 110, 0.24);
+  border-left: 4px solid var(--accent);
+  border-radius: 8px;
+  padding: 0.72rem;
+  background: linear-gradient(180deg, #ffffff, #f7fbf8);
+}
+
+.feature-extract-surface .panel-title-row {
+  margin-bottom: 0;
+}
+
+.feature-extract-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
+  gap: 0.5rem;
+  min-width: 0;
+}
+
+.feature-extract-grid > div {
+  min-width: 0;
+  border: 1px solid var(--line);
+  border-radius: 7px;
+  padding: 0.55rem 0.62rem;
+  background: #ffffff;
+}
+
+.feature-extract-grid span {
+  display: block;
+  color: var(--muted);
+  font-size: 0.68rem;
+  font-weight: 850;
+  letter-spacing: 0.05em;
+  text-transform: uppercase;
+}
+
+.feature-extract-grid strong {
+  display: block;
+  margin-top: 0.2rem;
+  overflow-wrap: anywhere;
+  font-size: 0.86rem;
+  line-height: 1.25;
+}
+
+.feature-extract-actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.5rem;
+  align-items: center;
+}
+
+.feature-extract-actions button {
+  width: fit-content;
+  max-width: 100%;
+  margin-top: 0;
+}
+
+.feature-property-table {
+  max-height: 18rem;
+  margin-top: 0;
+}
+
+.feature-property-table table {
+  min-width: 32rem;
+}
+
+.feature-extract-empty {
+  display: grid;
+  gap: 0.28rem;
+  border: 1px dashed var(--line-strong);
+  border-radius: 8px;
+  padding: 0.68rem 0.72rem;
+  background: #ffffff;
+}
+
+.feature-extract-empty p {
+  margin: 0;
+  color: var(--muted);
+  font-size: 0.84rem;
+  line-height: 1.35;
+}
+
 .lab-block + .lab-block {
   margin-top: 0.85rem;
 }