Point the basic and code-execution managed_agent sample READMEs at the common
ManagedAgent guide for setup, authentication, backends, and background, now that
that general content is consolidated in the guide.
Co-authored-by: Haran Rajkumar <haranrk@google.com>
PiperOrigin-RevId: 944601306
Add a runnable sample under contributing/samples/managed_agent/basic showing how
to use ManagedAgent (backed by the Managed Agents API) with the server-side
google_search tool, mirroring the live integration test flow. The sample
exposes a root_agent in agent.py and ships a README covering the required
enterprise/ADC setup and example prompts (including a multi-turn follow-up that
reuses the recovered remote sandbox).
Co-authored-by: Haran Rajkumar <haranrk@google.com>
PiperOrigin-RevId: 943536117