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/companies/company-form.tsx

@@ -8,6 +8,9 @@ import { useRouter } from 'next/navigation';
 import { Loader2, Plus, X, ChevronsUpDown, Check } from 'lucide-react';
 import { z } from 'zod';
 
+import { useFormScrollToError } from '@/hooks/use-form-scroll-to-error';
+import { FormErrorSummary } from '@/components/forms/form-error-summary';
+
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import { Label } from '@/components/ui/label';
@@ -129,6 +132,7 @@ export function CompanyForm({ open, onOpenChange, company, prefill }: CompanyFor
     },
   });
 
+  const scrollOnError = useFormScrollToError(handleSubmit, errors);
   const tagIds = watch('tagIds') ?? [];
   const status = watch('status') ?? 'active';
 
@@ -264,12 +268,13 @@ export function CompanyForm({ open, onOpenChange, company, prefill }: CompanyFor
         </SheetHeader>
 
         <form
-          onSubmit={handleSubmit((data) => {
+          onSubmit={scrollOnError((data) => {
             setFormError(null);
             mutation.mutate(data as CreateCompanyInput);
           })}
           className="space-y-6 py-6"
         >
+          <FormErrorSummary errors={errors} />
           {/* Basics */}
           <div className="space-y-4">
             <h3 className="text-sm font-medium text-muted-foreground uppercase tracking-wide">