chore: add test script to linkedin-search cli package.json (#38)

Matches the jobindex-search convention; follow-up noted in #35 review.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

.agents/skills/linkedin-search/cli/package.json

@@ -9,6 +9,7 @@
   },
   "scripts": {
     "start": "bun run src/cli.ts",
+    "test": "bun test --timeout 30000",
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {},