feat(fe): trader-style agent profile — TEC-3061

Refactors /agents/[id] from card-avatar layout to a data-dense
trading-floor style profile per TEC-3037 §5 mockup.

- Profile header: avatar, KYC badge, quality score, years exp, service areas
- KPI strip (5 cards): total listings, active, deals, avg price, rating
- Performance line chart (12m): published vs sold, derived from real listings
- Listings table (DataTable): sortable by price/area/views/inquiries, dense rows
- Reviews panel: EmptyState when none, ReviewRow cards otherwise
- Sticky right sidebar: contact card + quality donut + bio
- fetchAgentListings() server fn (agents-server.ts) via GET /listings?agentId
- SearchListingsParams.agentId added (listings-api.ts)
- page.tsx fetches listings in parallel with agent + reviews
- Test suite updated for new props (listings/listingsTotal) + new text copy
- Web unit tests: 82/82 files pass, 697/697 tests pass

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/web/lib/listings-api.ts

@@ -187,6 +187,8 @@ export interface SearchListingsParams {
   minArea?: number;
   maxArea?: number;
   bedrooms?: number;
+  /** Filter by assigned agent ID */
+  agentId?: string;
   page?: number;
   limit?: number;
 }