feat(uat-batch): Group I — Residential parity (4 ships)

I34–I37 from the 2026-05-21 plan.

Shipped:
  I34  Residential client header layout parity. Email / Call /
       WhatsApp action buttons mirror the main ClientDetailHeader.
       WhatsApp number resolves from phoneE164 (preferred) or strips
       the free-text phone to digits. Header surfaces "Linked to
       main client" chip when the auto-link matcher (I37) finds a
       counterpart in the main CRM.
  I35  Residential interests list rebuilt for parity with the main
       InterestList. New ResidentialInterestCard +
       getResidentialInterestColumns + residentialInterestFilter-
       Definitions; the list page drives DataTable + FilterBar +
       ColumnPicker + SavedViewsDropdown + bulkActions. List
       endpoint validator widened to accept pipelineStage as a
       string OR string[] and added a source filter. Service post-
       fetches client names via a single IN-list lookup so the
       table renders fullName in column 1 without N+1.
       New /api/v1/residential/interests/bulk supports
       change_stage + archive (100-id cap). Kanban view deferred.
  I36  Residential inquiries auto-forward to partner email(s).
       New registry entry residential_partner_recipients (comma-
       separated) under section residential.partner.
       createResidentialInterest fires
       forwardResidentialInquiryToPartner after the row lands.
       Helper uses the same branded shell other transactional
       emails use. Failures log + never block create. The
       /admin/residential-stages page picks up a registry-driven
       card so admins manage recipients alongside stages.
  I37  Auto-link residential ↔ main client. Migration 0080 adds
       residential_clients.linked_client_id (nullable FK, SET NULL
       on cascade) + partial index. New findAndLinkMatchingMainClient
       service matches by email first (case-insensitive client_contacts
       lookup) then by E.164 phone. First exact match wins. Fires
       fire-and-forget from createResidentialClient. Header surfaces
       the link via a "Linked to main client" chip. Backfill script
       + reverse-direction link from main ClientDetailHeader stay
       as follow-ups.

Verified: tsc clean, vitest 1454/1454, migration applied.

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

src/components/residential/residential-interest-card.tsx

@@ -0,0 +1,53 @@
+'use client';
+
+import Link from 'next/link';
+import { Badge } from '@/components/ui/badge';
+import type { ResidentialInterestRow } from './residential-interest-columns';
+import { RESIDENTIAL_STAGE_LABELS } from './residential-interest-filters';
+
+/**
+ * Mobile / grid card for the residential interests list. Mirrors the
+ * footprint of <InterestCard> on the main list — same touch target
+ * conventions (entire card is clickable, generous padding, truncated
+ * meta below the title).
+ */
+export function ResidentialInterestCard({
+  interest,
+  portSlug,
+}: {
+  interest: ResidentialInterestRow;
+  portSlug: string;
+}) {
+  return (
+    <Link
+      /* eslint-disable-next-line @typescript-eslint/no-explicit-any */
+      href={`/${portSlug}/residential/interests/${interest.id}` as any}
+      className="block rounded-lg border bg-card p-3 transition-colors hover:bg-muted/30"
+    >
+      <div className="flex items-start justify-between gap-2">
+        <div className="min-w-0">
+          <p className="truncate text-sm font-medium">{interest.clientName ?? '—'}</p>
+          <div className="mt-1 flex flex-wrap items-center gap-1.5">
+            <Badge variant="secondary" className="text-[10px]">
+              {RESIDENTIAL_STAGE_LABELS[interest.pipelineStage] ?? interest.pipelineStage}
+            </Badge>
+            {interest.source ? (
+              <span className="text-[11px] capitalize text-muted-foreground">
+                {interest.source}
+              </span>
+            ) : null}
+          </div>
+        </div>
+        <span className="shrink-0 text-[11px] text-muted-foreground">
+          {new Date(interest.updatedAt).toLocaleDateString()}
+        </span>
+      </div>
+      {interest.preferences ? (
+        <p className="mt-1 line-clamp-2 text-xs text-muted-foreground">{interest.preferences}</p>
+      ) : null}
+      {interest.notes ? (
+        <p className="mt-1 line-clamp-1 text-xs text-muted-foreground/80">{interest.notes}</p>
+      ) : null}
+    </Link>
+  );
+}