Introduce dashboardVisual.ts with moneyTone, formatDashboardCurrency,
eventTypeTone, incomeTypeTone, and instrumentDisplay helpers used by
the broker dashboard to match the HTML reference prototype.
Extend dashboardIncome.ts: typeLabel now distinguishes DIV_EXT
('Дивиденд (внешний)'), and rows expose instrumentMain/instrumentSubtitle
via instrumentDisplay while keeping instrument as a derived alias for
existing callers.
Add resetDashboardFilters factory in dashboardFilters.ts so Task 3 can
wire the reset action without re-churning filter types.
Replace vertical overview with dashboard composition:
- BrokerDashboardHero with portfolio KPI, return, daily change, total income
- BrokerDashboardEventsCard with compact events table and local pagination
- BrokerDashboardIncomeCard with income operations table and cursor pagination
- BrokerDashboardAnalyticsCard with analytics Metric grid
- BrokerDashboardAllocationCard wrapping existing donut chart
- BrokerDashboardSkeleton matching dashboard shape
- BrokerDashboardCard local card pattern
- Pure lib helpers: dashboardIncome, dashboardFilters, dashboardFormatters
- Unit tests for income helpers (6) and dashboard composition (1)
