feat(uat-b2): visual breakpoint fixes + form-error UX rollout

B2 Wave A (visual breakpoints):
- Documents Hub folder rail: widen ResizablePanel default 20→22%,
  min 14→18%, add min-w-[180px] CSS floor so names don't truncate
  at tablet 768
- Website analytics KPI tiles: switch lg grid 6→3 cols, restore 6
  at xl so "Visit duration" stops truncating in the 1024+sidebar
  layout
- Pipeline Value tile per-stage rows: compact $3.5M format on
  sm- breakpoint (responsive sm:hidden / hidden sm:inline pair)

B2 Wave D (form-error UX rollout):
- useFormScrollToError + FormErrorSummary wired into 5 high-impact
  forms: client-form, interest-form, yacht-form, company-form,
  berth-form. Validation failures now scroll the first errored
  field into view + render a top-of-form summary banner when ≥2
  errors exist. Remaining ~23 form surfaces queued for follow-up.

B2 Wave B (Umami follow-ups):
- TopList primitive: add onExpandRange + expandRangeLabel props
  for the empty-state nudge ("Try last 30 days" button). Callers
  can opt in to drive the page-level DateRange.

B2 Wave C (FieldLabel + admin tooltip audit):
- Verified FieldLabel primitive already exists + is adopted in
  custom-field-form. Registry-driven-form renders entry.description
  inline below labels for every entry — the broad sweep across
  15-20 admin pages is deferred to a focused polish session.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/dashboard/pipeline-value-tile.tsx

@@ -83,6 +83,21 @@ export function PipelineValueTile({ range }: { range?: DateRange } = {}) {
   const stageMax = activeStages.reduce((m, s) => Math.max(m, s.grossValue), 0) || 1;
 
   const fmt = (v: number) => formatCurrency(v, currency, { maxFractionDigits: 0 });
+  // Compact variant for the per-stage cell on narrow viewports — $3,528,000
+  // overflows the right column at 375px otherwise. Falls back to the full
+  // format at sm+ where there's room.
+  const fmtCompact = (v: number) => {
+    try {
+      return new Intl.NumberFormat(undefined, {
+        style: 'currency',
+        currency: currency || 'USD',
+        notation: 'compact',
+        maximumFractionDigits: 1,
+      }).format(v);
+    } catch {
+      return fmt(v);
+    }
+  };
 
   return (
     <Card>
@@ -204,7 +219,8 @@ export function PipelineValueTile({ range }: { range?: DateRange } = {}) {
                   </div>
                   <div className="text-right">
                     <p className="text-sm font-semibold text-foreground tabular-nums">
-                      {fmt(s.grossValue)}
+                      <span className="sm:hidden">{fmtCompact(s.grossValue)}</span>
+                      <span className="hidden sm:inline">{fmt(s.grossValue)}</span>
                     </p>
                     <p className="text-[11px] text-muted-foreground tabular-nums">
                       {s.count} {s.count === 1 ? 'deal' : 'deals'} · {Math.round(s.weight * 100)}%