feat: defer advanced build calculations

src/app.css

@@ -11754,7 +11754,7 @@ a.secondary:active {
   padding: 22px;
   border: 1px solid var(--shd-border);
   border-top: 2px solid var(--shd-orange);
-  background: var(--shd-panel);
+  background: var(--shd-surface);
 }
 .shared-build-command h1 {
   margin: 8px 0;
@@ -11777,7 +11777,12 @@ a.secondary:active {
 }
 .shared-build-grid > section {
   border: 1px solid var(--shd-border);
-  background: var(--shd-panel);
+  background: var(--shd-surface);
+}
+.shared-build-intelligence {
+  display: grid;
+  gap: 10px;
+  margin-top: 10px;
 }
 .shared-build-grid > section > header {
   display: flex;
@@ -11810,6 +11815,26 @@ a.secondary:active {
   color: var(--shd-text-muted);
   font-size: var(--shd-type-telemetry);
 }
+.shared-build-grid article > em {
+  color: var(--shd-text-dim);
+  font-size: var(--shd-type-telemetry);
+  font-style: normal;
+  line-height: 1.4;
+}
+.shared-item-facts {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 4px;
+  margin-top: 3px;
+}
+.shared-item-facts b {
+  padding: 4px 5px;
+  border: 1px solid var(--shd-border-soft);
+  background: var(--shd-bg);
+  color: var(--shd-text);
+  font-size: var(--shd-type-telemetry);
+  letter-spacing: 0.35px;
+}
 @media (max-width: 760px) {
   .builder-command .page-title,
   .shared-build-command {
@@ -12050,6 +12075,7 @@ a.secondary:active {
     flex-direction: column;
   }
   .builder-command .page-title > div:first-child {
+    flex: 0 0 auto;
     min-width: 0;
   }
   .builder-command .actions {
@@ -15104,6 +15130,10 @@ a.secondary:active {
   padding: var(--shd-gap-sm);
   border-bottom: 1px solid var(--shd-border);
 }
+.builder-planned-model {
+  padding: var(--shd-gap-sm);
+  border-top: 1px solid var(--shd-border);
+}
 .builder-return-link {
   width: max-content;
   min-height: 36px;