feat: add drive to iag-mcp-demo

[cowan-macady]

implement ENG-8488

• add weather
• fix issues

[deepsource-io]

DeepSource Code Review

We reviewed changes in ff54bba...8e2868a on this pull request. Below is the summary for the review, and you can see the individual issues we found as inline review comments.

See full review on DeepSource ↗

PR Report Card

Overall Grade

Security   Reliability   Complexity   Hygiene

Code Review Summary

Analyzer	Status	Updated (UTC)	Details
Secrets		Jul 17, 2026 8:28p.m.	Review ↗
Python		Jul 17, 2026 8:28p.m.	Review ↗

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[Copilot]

Pull request overview

Adds/updates relationship graph wiring and demo stack configuration for the iag-mcp-demo to support additional workflow routing (notably weather → MCP via wf2) and to improve MCP proxy troubleshooting by preserving error bodies and redacting Authorization headers in debug output.

Changes:

• Extend relationship definitions to allow support to trigger wf2 and to route wf2 through the MCP gateway/agent chain.
• Pin the Agent Gateway image to indykite/agent-gateway:2.21.1 and simplify compose by inheriting the pinned tag everywhere; configure weather gateway to allow wf2.
• Improve MCP error diagnostics in the analyst/retriever agents (buffer error bodies before stream close; redact Authorization header in formatted errors).

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
canbank-iag/data/relationships/relationships_iag.json	Adds wf2 trigger + INVOKES edges to wire wf2 into the agent/MCP chain.
a2a/iag-mcp-demo/retriever_agent/retriever_agent.py	Buffers error bodies for streaming HTTP failures; redacts Authorization in formatted error output.
a2a/iag-mcp-demo/analyst_agent/analyst_agent.py	Same MCP streaming/error-formatting improvements as retriever agent.
a2a/iag-mcp-demo/README.md	Updates documentation to pin Agent Gateway to 2.21.1 and clarifies MCP proxying requirement.
a2a/iag-mcp-demo/iag-base-docker.yaml	Pins gateway image to 2.21.1 with updated rationale.
a2a/iag-mcp-demo/docker-compose.yaml	Sets weather gateway allowed workflow to WEATHER_WORKFLOW_ID; removes per-service image overrides now that base is pinned.
a2a/iag-mcp-demo/bruno/iag-demo/ingest/demo-data/canbank/create-canbank-rels.yml	Adds department → wf2 relationship for the demo data ingest.
a2a/iag-mcp-demo/bruno/iag-demo/ingest/agent-worfklow/create-relationships.yml	Adds/updates wf1/wf2 routing edges in the agent-workflow relationship ingest payload.

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