fix(ci): add wrangler to root devDependencies

Fixes pnpm workspace error in Cloudflare Pages deployment workflow.
The wrangler-action was failing with ERR_PNPM_ADDING_TO_ROOT when
trying to install wrangler in a monorepo setup.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: WuMingDao

package.json

@@ -35,6 +35,7 @@
     "@vitest/coverage-v8": "^4.0.15",
     "turbo": "^2.3.3",
     "typescript": "^5.7.2",
-    "vitest": "^4.0.15"
+    "vitest": "^4.0.15",
+    "wrangler": "^3.90.0"
   }
 }