feat(dashboard): redesign UI with smart polling, unified sync card, filter bar
Replace SSE with smart polling (30s idle / 3s when running). Unify sync
panel into single two-row card with live progress text. Add unified filter
bar (period dropdown, status pills, search) with period-total counts.
Add Client/Cont tooltip for different shipping/billing persons. Add SKU
mappings pct_total badges + complete/incomplete filter + 409 duplicate
check. Add missing SKUs search + rescan progress UX. Migrate SQLite
orders schema (shipping_name, billing_name, payment_method,
delivery_method). Fix JSON_OUTPUT_DIR path for server running from
project root. Fix pagination controls showing top+bottom with per-page
selector (25/50/100/250).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Marius Mutu
5f8b9b6003