Update ADK doc according to issue #1256 - 5 - Cloud Trace Captured Attributes

[adk-bot]

5. Summary of the change

Doc file: docs/integrations/cloud-trace.md

Current state:

If you click on one of the traces, you will see the waterfall view of the detailed process, similar to what we see in the web development UI with adk web command.

Resources

Proposed Change:

If you click on one of the traces, you will see the waterfall view of the detailed process, similar to what we see in the web development UI with adk web command.

Captured Attributes

ADK automatically enriches traces with the following attributes to help you filter and analyze your agent's behavior:

• gen_ai.agent.name: The name of the agent being executed.
• user.id: The ID of the user interacting with the agent.
• gcp.vertex.agent.invocation_id: The unique ID of the invocation.
• gcp.vertex.agent.event_id: The ID of the specific event.
• gen_ai.conversation.id: The session ID.

Resources

Reasoning:
New telemetry attributes (gen_ai.agent.name, user.id, etc.) have been added to tracing spans. Documenting them helps users understand what data is available for filtering and debugging.

Reference: src/google/adk/telemetry/tracing.py

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[zyantw]

Original issue: item #5 #1256
Agent PR: #1264
Staging link: https://deploy-preview-1264--adk-docs-preview.netlify.app/integrations/cloud-trace/#inspect-cloud-traces

Note: I had an issue with the rendering of the bullet points, hence the bundle of commits, but I fixed it.