feat(reports): client / berth / interest list-export PDF reports (phase B)

Extends the report exporter with three list-style report kinds —
clients, berths, interests. Each shares the BrandedReportDocument
layout + the new ReportTable primitive (zebra-striped rows,
proportional widths, no-break rows to keep records together across
page boundaries).

Data fetchers in `src/lib/services/list-report-data.service.ts`:
  - resolveClientReportData: clients table joined to per-client
    primary email + phone via DISTINCT-style subqueries (matches the
    canonical listClients ordering: is_primary DESC, created_at DESC
    per channel).
  - resolveBerthReportData: berths table, default sort by mooring
    number for printed familiarity.
  - resolveInterestReportData: interests left-joined to clients +
    primary berth, sort by updatedAt desc.

All three cap at 1 000 rows per export with a clear "Showing top N
of <total>" notice rendered when the cap is hit. Above that, the PDF
becomes unreadable (hundreds of pages); reps wanting larger exports
use CSV.

Route schema widened to a 4-arm discriminated union; the dispatch
switch in render-report.ts uses `satisfies` for compile-time variant
narrowing and a `_exhaustive: never` check at the bottom.

UI: each list page (BerthList, ClientList, InterestList) gains an
ExportListPdfButton next to the existing ColumnPicker. Permission-
gated client-side on reports.export; server route re-enforces.

Tests: 3 new render fixtures (1 per kind), all hit the same
%PDF-magic + byte-length assertions. Total render tests now 6/6;
full vitest sweep 1454/1454.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/interests/interest-list.tsx

@@ -35,6 +35,7 @@ import {
   type InterestRow,
 } from '@/components/interests/interest-columns';
 import { ColumnPicker } from '@/components/shared/column-picker';
+import { ExportListPdfButton } from '@/components/reports/export-list-pdf-button';
 import { SaveViewDialog } from '@/components/shared/save-view-dialog';
 import { useCreateFromUrl } from '@/hooks/use-create-from-url';
 import { useTablePreferences } from '@/hooks/use-table-preferences';
@@ -268,6 +269,7 @@ export function InterestList() {
                 onChange={setHidden}
                 onSaveView={() => setSaveViewOpen(true)}
               />
+              <ExportListPdfButton kind="interests" />
             </>
           ) : null}
           <StageLegend />