chore(deps): add @1password/sdk dependency

Add 1Password SDK v0.3.1 for programmatic secret resolution
without requiring the 1Password CLI.

Author: johnlindquist

package.json

@@ -73,6 +73,7 @@
   "author": "John Lindquist (https://johnlindquist.com)",
   "license": "ISC",
   "dependencies": {
+    "@1password/sdk": "0.3.1",
     "@ai-sdk/anthropic": "2.0.49",
     "@ai-sdk/google": "2.0.43",
     "@ai-sdk/openai": "2.0.72",