fix: Correct authproxy-routes host pattern and add Keycloak scope ass…

[mrsabath]

Summary

• Fix authproxy-routes host pattern: changed from **.github-issue-tool**.svc.cluster.local (non-existent service name) to github-tool-mcp (actual Kubernetes service name), so outbound token exchange matches requests to the GitHub tool
• Add Keycloak scope assignment to setup_keycloak.py for the agent's dynamically-registered client: agent audience scope as default (for inbound validation), github-tool-aud and github-full-access as optional (for client_credentials token exchange)

These bugs were discovered while testing the passthrough-by-default outbound policy from PR #185.

Related issue(s)

Relates to rossoctl/rossoctl#882

Testing Instructions

1. Deploy the GitHub Issue Agent demo following AuthBridge/demos/github-issue/demo-ui.md
2. Run setup_keycloak.py (now assigns scopes to the agent client automatically)
3. Apply configmaps.yaml (route now matches github-tool-mcp)
4. Verify token exchange via CLI or Kagenti UI chat:
   • Outbound to Ollama: passthrough (no token exchange)
   • Outbound to github-tool-mcp: token exchanged via client_credentials with aud: github-tool

[huang195]

Code review

Found 1 issue:

1. Route host pattern github-tool-mcp does not match the actual Kubernetes service name github-tool-service.

The PR changes the route host from **.github-issue-tool**.svc.cluster.local to github-tool-mcp. However, the GitHub tool's Kubernetes Service is defined as github-tool-service in the deployment manifest, and the agent's MCP_URL is set to http://github-tool-service:9090/mcp. The go-processor route resolver strips the port from the :authority header and glob-matches against the route patterns -- so the host being matched will be github-tool-service, which does not match github-tool-mcp. This means outbound token exchange will not trigger for requests to the GitHub tool.

The correct host pattern should likely be github-tool-service (or a glob like github-tool-service* to also match the FQDN).

Evidence:

• Service name: https://github.com/kagenti/kagenti-extensions/blob/9aec10e445cd95fd7b9f384acf8f08f9839d1fe7/AuthBridge/demos/github-issue/k8s/github-tool-deployment.yaml#L84-L86
• Agent MCP_URL referencing github-tool-service: https://github.com/kagenti/kagenti-extensions/blob/9aec10e445cd95fd7b9f384acf8f08f9839d1fe7/AuthBridge/demos/github-issue/k8s/git-issue-agent-deployment.yaml#L82-L84
• Changed route pattern: https://github.com/kagenti/kagenti-extensions/blob/9aec10e445cd95fd7b9f384acf8f08f9839d1fe7/AuthBridge/demos/github-issue/k8s/configmaps.yaml#L60-L63

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[mrsabath]

The automated code review misread the file line references. The Kubernetes Service name is github-tool-mcp (line 85 of github-tool-deployment.yaml), and the agent MCP_URL is http://github-tool-mcp:9090/mcp (line 94 of git-issue-agent-deployment.yaml).

The route pattern github-tool-mcp is correct and was confirmed working end-to-end:

[Resolver] Host "github-tool-mcp" matched "github-tool-mcp"
[Client Credentials] Successfully obtained token
[Client Credentials] Injecting token into outbound request

The referenced lines 84-86 in the review actually point to the Service metadata block (name: github-tool-mcp), not github-tool-service. There is no github-tool-service anywhere in the codebase.

[huang195]

Looks good!