Update contact lookup sample#559

Open

nan-yu wants to merge 3 commits intogoogle:mainfrom

nan-yu:update-contact-lookup-sample

Commits on Jan 28, 2026

feat: implement schema packaging and runtime loading
nan-yu
committed
feat: Introduce schema bundling in A2uiSchemaManager and add a validator
nan-yu
committed
Update the agent/contact_lookup sample to use the a2ui-agent python SDK
nan-yu
committed