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/interests/interest-form.tsx

@@ -48,6 +48,8 @@ import { YachtPicker } from '@/components/yachts/yacht-picker';
 import { apiFetch } from '@/lib/api/client';
 import { useEntityOptions } from '@/hooks/use-entity-options';
 import { formatBerthRange } from '@/lib/templates/berth-range';
+import { useFormScrollToError } from '@/hooks/use-form-scroll-to-error';
+import { FormErrorSummary } from '@/components/forms/form-error-summary';
 import type { z } from 'zod';
 import { createInterestSchema, type CreateInterestInput } from '@/lib/validators/interests';
 import { PIPELINE_STAGES, STAGE_LABELS, LEAD_CATEGORIES, SOURCES } from '@/lib/constants';
@@ -147,6 +149,8 @@ export function InterestForm({ open, onOpenChange, defaultClientId, interest }:
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [selectedBerthId]);
 
+  const scrollOnError = useFormScrollToError(handleSubmit, errors);
+
   function requestClose() {
     if (isDirty && !isSubmitting && !mutation.isPending) {
       setDiscardConfirmOpen(true);
@@ -356,7 +360,8 @@ export function InterestForm({ open, onOpenChange, defaultClientId, interest }:
           <SheetTitle>{isEdit ? 'Edit Interest' : 'New Interest'}</SheetTitle>
         </SheetHeader>
 
-        <form onSubmit={handleSubmit((data) => mutation.mutate(data))} className="space-y-6 py-6">
+        <form onSubmit={scrollOnError((data) => mutation.mutate(data))} className="space-y-6 py-6">
+          <FormErrorSummary errors={errors} />
           {/* Client */}
           <div className="space-y-4">
             <h3 className="text-sm font-medium text-muted-foreground uppercase tracking-wide">