feat(deps): @faker-js/faker wide-synthetic seed for load testing

New seed harness for stress-testing list pages, search, analytics
under realistic volumes. Faker-driven, deterministic via fixed
seed, idempotent via `clients.source_details = 'wide-synthetic'`
marker.

- `src/lib/db/seed-wide-synthetic-data.ts` — generator (1000 clients
  default, override via `WIDE_SEED_COUNT`)
- `src/lib/db/seed-wide-synthetic.ts` — entrypoint
- `pnpm db:seed:wide-synthetic` script

Distribution:
- 70% of clients get an interest (spread across pipeline stages)
- ~50% of those interests link to a real berth
- Acquisition source weighted: 55% website / 25% referral /
  15% broker / 5% manual
- Locale-aware names/emails/phones/addresses via faker

Curated synthetic seed (`seed-synthetic-data.ts`) and realistic
seed (`seed-data.ts`) are untouched — this is a third axis for
volume testing, not a replacement.

Verified: tsc clean, build green.

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

package.json

@@ -17,6 +17,7 @@
     "db:seed": "tsx src/lib/db/seed.ts",
     "db:seed:realistic": "tsx src/lib/db/seed.ts",
     "db:seed:synthetic": "tsx src/lib/db/seed-synthetic.ts",
+    "db:seed:wide-synthetic": "tsx src/lib/db/seed-wide-synthetic.ts",
     "db:reset": "tsx scripts/db-reset.ts --confirm",
     "db:reseed:realistic": "pnpm db:reset && pnpm db:seed:realistic",
     "db:reseed:synthetic": "pnpm db:reset && pnpm db:seed:synthetic",
@@ -117,6 +118,7 @@
   },
   "devDependencies": {
     "@axe-core/playwright": "^4.11.3",
+    "@faker-js/faker": "^10.4.0",
     "@hookform/devtools": "^4.4.0",
     "@next/bundle-analyzer": "^16.2.6",
     "@playwright/test": "^1.60.0",