refactor(frontend): polish dashboard tables per code review

- Drop unused `letterSpacing: 0.2` from TH_SX in both table cards
  (HTML mockup has no letter-spacing on headers)
- Move `eventStatusTone` from EventsCard to dashboardVisual.ts
  for symmetry with `eventTypeTone` (single source of tone semantics)
- Drop unused `columnWidths` prop and `widthsFor` override branch
  in BrokerDashboardTableSkeleton (no caller passes it)
- Drop redundant `role="presentation"` on skeleton wrapper
  (rows already carry `aria-hidden="true"`)
- Drop unused `TypeTone` import from EventsCard after moving
  eventStatusTone out

apps/frontend/src/widgets/broker-dashboard/lib/dashboardVisual.ts

@@ -73,6 +73,10 @@ export function incomeTypeTone(label: DashboardIncomeTypeLabel): TypeTone {
   }
 }
 
+export function eventStatusTone(source: BrokerEventItem['source']): TypeTone {
+  return source === 'actual' ? 'success' : 'neutral'
+}
+
 function nonEmpty(value: string | null | undefined): string | null {
   return typeof value === 'string' && value.trim().length > 0 ? value.trim() : null
 }

apps/frontend/src/widgets/broker-dashboard/ui/BrokerDashboardEventsCard.tsx

@@ -6,6 +6,7 @@ import { formatBrokerDate } from '@/shared/lib/formatters'
 import type { DashboardDatePreset, DashboardEventType } from '../lib/dashboardFilters'
 import { eventStatusLabel, eventTypeLabel } from '../lib/dashboardFormatters'
 import {
+  eventStatusTone,
   eventTypeTone,
   formatDashboardCurrency,
   instrumentDisplay,
@@ -39,7 +40,6 @@ const TH_SX = {
   color: 'text.secondary',
   fontWeight: 600,
   fontSize: 12,
-  letterSpacing: 0.2,
   textTransform: 'uppercase' as const,
   whiteSpace: 'nowrap' as const,
 }
@@ -86,10 +86,6 @@ type BrokerDashboardEventsCardProps = {
   canGoForward: boolean
 }
 
-function eventStatusTone(event: BrokerEventItem): TypeTone {
-  return event.source === 'actual' ? 'success' : 'neutral'
-}
-
 function eventAmountValue(event: BrokerEventItem): number | null {
   return event.source === 'actual' ? event.actualAmount : event.estimatedAmount
 }
@@ -254,7 +250,7 @@ export function BrokerDashboardEventsCard({
                       <Box component="td" sx={TD_SX_RIGHT}>
                         <Chip
                           label={eventStatusLabel(event)}
-                          tone={eventStatusTone(event)}
+                          tone={eventStatusTone(event.source)}
                           selected={false}
                         />
                       </Box>

apps/frontend/src/widgets/broker-dashboard/ui/BrokerDashboardIncomeCard.tsx

@@ -34,7 +34,6 @@ const TH_SX = {
   color: 'text.secondary',
   fontWeight: 600,
   fontSize: 12,
-  letterSpacing: 0.2,
   textTransform: 'uppercase' as const,
   whiteSpace: 'nowrap' as const,
 }

apps/frontend/src/widgets/broker-dashboard/ui/BrokerDashboardTableSkeleton.tsx

@@ -1,12 +1,11 @@
 import { Skeleton } from '@moex-vibe/design-system'
 import { Box } from '@mui/material'
 
-type ColumnWidth = number | string
+type ColumnWidth = string
 
 type BrokerDashboardTableSkeletonProps = {
   rows?: number
   columns?: number
-  columnWidths?: ColumnWidth[]
 }
 
 const DEFAULT_EVENT_WIDTHS: ColumnWidth[] = ['14%', '32%', '18%', '18%', '18%']
@@ -21,8 +20,7 @@ const EVENT_ROW_VARIANTS: Array<'short' | 'long' | 'full'> = [
 ]
 const INCOME_ROW_VARIANTS: Array<'short' | 'long' | 'full'> = ['short', 'long', 'medium', 'short']
 
-function widthsFor(columns: number, override?: ColumnWidth[]): ColumnWidth[] {
-  if (override && override.length === columns) return override
+function widthsFor(columns: number): ColumnWidth[] {
   if (columns === 4) return DEFAULT_INCOME_WIDTHS
   if (columns === 5) return DEFAULT_EVENT_WIDTHS
   return Array.from({ length: columns }, () => '100%')
@@ -36,16 +34,15 @@ function rowVariantsFor(columns: number): Array<'short' | 'long' | 'full' | 'med
 export function BrokerDashboardTableSkeleton({
   rows = 5,
   columns = 5,
-  columnWidths,
 }: BrokerDashboardTableSkeletonProps) {
-  const widths = widthsFor(columns, columnWidths)
+  const widths = widthsFor(columns)
   const variants = rowVariantsFor(columns)
 
   return (
     <Box
       sx={{ display: 'grid', gap: 1, py: 1 }}
       data-testid="dashboard-table-skeleton"
-      role="presentation"
+      aria-hidden="true"
     >
       {Array.from({ length: rows }, (_, i) => (
         <Box
@@ -57,7 +54,6 @@ export function BrokerDashboardTableSkeleton({
             minHeight: 38,
             py: 0.5,
           }}
-          aria-hidden="true"
         >
           {widths.map((width, j) => (
             <Box key={j} sx={{ flex: `0 0 ${width}`, minWidth: 0 }}>