fix(fe): build the title from the live figure selection

regenerateCopy() runs synchronously from a click handler, but it read the
figureName reactive, which Svelte has not flushed yet in that tick - so a
figure picked in the form never reached the title. Resolve the figure straight
from figIds at call time instead.

frontend/src/review/ReviewForm.svelte

@@ -48,7 +48,6 @@
   $: figTags = (taxonomy?.tags ?? []).filter((t) => t.slug.startsWith('fig-') || t.name.startsWith('fig-'));
   $: featTags = (taxonomy?.tags ?? []).filter((t) => t.slug.startsWith('feat-') || t.name.startsWith('feat-'));
   $: speciesName = (id: number | null) => categories.find((c) => c.id === id)?.name ?? '';
-  $: figureName = figureTerms.find((t) => t.id === (figIds[0] ?? null))?.name ?? null;
 
   // ── Draft fields ──
   let sku = slab.sku || '';
@@ -74,17 +73,25 @@
   $: edgeName = edgeTerms.find((t) => t.id === edgeId)?.name ?? null;
   $: primaryLeaf = categories.find((c) => c.id === primaryCatId);
 
+  // Read the figure from the live selection, not the `figureName` reactive:
+  // this runs synchronously from a click handler, before Svelte flushes the
+  // reactive update, so the reactive would still hold the previous value.
+  function currentFigureName(): string | null {
+    return figureTerms.find((t) => t.id === (figIds[0] ?? null))?.name ?? null;
+  }
+
   function regenerateCopy() {
     if (!primaryLeaf || !speciesName(speciesId as number)) return;
+    const figure = currentFigureName();
     title = buildTitle(
       { lengthIn: slab.lengthIn, widthAvgIn: slab.widthAvgIn, thicknessIn: slab.thicknessIn, bdft: slab.bdft, edgeName },
-      figureName,
+      figure,
       speciesName(speciesId as number),
       { slug: primaryLeaf.slug, name: primaryLeaf.name },
     );
     shortDesc = buildShortDescription(
       { lengthIn: slab.lengthIn, widthAvgIn: slab.widthAvgIn, thicknessIn: slab.thicknessIn, bdft: slab.bdft, edgeName },
-      figureName,
+      figure,
       speciesName(speciesId as number),
       { slug: primaryLeaf.slug, name: primaryLeaf.name },
     );