chore(deps): bump vitest to ^4.1.0 (CVE fix)

Bumps vitest from ^4.0.17 to ^4.1.0 in the cli workspace to resolve
Dependabot alert #119 (CRITICAL). Resolves via vitest@4.1.10.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HiccCEh9mwCfVzE8qYcop1

Author: cliffhall

cli/package.json

@@ -33,7 +33,7 @@
   "devDependencies": {
     "@types/express": "^5.0.0",
     "tsx": "^4.7.0",
-    "vitest": "^4.0.17"
+    "vitest": "^4.1.0"
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.25.2",