feat(companies): show member + yacht counts on list page

listCompanies returns memberCount (active companyMemberships)
and yachtCount (yachts where currentOwnerType=company), each
fetched as a parallel grouped count after the main page query.
Two new badge columns in company-columns render them between
the tax-id and status columns.

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

src/lib/services/companies.service.ts

@@ -1,7 +1,8 @@
-import { and, eq, ilike, or, sql } from 'drizzle-orm';
+import { and, count, eq, ilike, inArray, isNull, or, sql } from 'drizzle-orm';
 import { db } from '@/lib/db';
-import { companies, companyTags } from '@/lib/db/schema/companies';
+import { companies, companyMemberships, companyTags } from '@/lib/db/schema/companies';
 import type { Company } from '@/lib/db/schema/companies';
+import { yachts } from '@/lib/db/schema/yachts';
 import { withTransaction } from '@/lib/db/utils';
 import { buildListQuery } from '@/lib/db/query-builder';
 import { createAuditLog } from '@/lib/audit';
@@ -238,7 +239,41 @@ export async function listCompanies(portId: string, query: ListCompaniesInput) {
     archivedAtColumn: companies.archivedAt,
   });
 
-  return result;
+  if (result.data.length === 0) return result;
+
+  const ids = result.data.map((r) => r.id);
+
+  const [memberCounts, yachtCounts] = await Promise.all([
+    db
+      .select({ companyId: companyMemberships.companyId, count: count() })
+      .from(companyMemberships)
+      .where(and(inArray(companyMemberships.companyId, ids), isNull(companyMemberships.endDate)))
+      .groupBy(companyMemberships.companyId),
+    db
+      .select({ ownerId: yachts.currentOwnerId, count: count() })
+      .from(yachts)
+      .where(
+        and(
+          eq(yachts.portId, portId),
+          eq(yachts.currentOwnerType, 'company'),
+          inArray(yachts.currentOwnerId, ids),
+          isNull(yachts.archivedAt),
+        ),
+      )
+      .groupBy(yachts.currentOwnerId),
+  ]);
+
+  const memberCountMap = new Map(memberCounts.map((r) => [r.companyId, r.count]));
+  const yachtCountMap = new Map(yachtCounts.map((r) => [r.ownerId, r.count]));
+
+  return {
+    ...result,
+    data: result.data.map((row) => ({
+      ...row,
+      memberCount: memberCountMap.get(row.id) ?? 0,
+      yachtCount: yachtCountMap.get(row.id) ?? 0,
+    })),
+  };
 }
 
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