Add deploy-agent-aks-auid skill (Agent ID User on AKS via Entra SDK auth-sidecar)

[vj926]

Adds a new self-contained skill at .claude/skills/deploy-auid-demo/ for the Agent ID User (AUID) flow on AKS — the non-OBO complement to the existing deploy-agent-aks-dev (autonomous) and OBO variants.

What's AUID?

The mode where an Entra Agent Identity has its own first-class user object (microsoft.graph.agentUser, parented to the Agent Identity app) and the agent calls downstream services as itself (no human in the loop). Token chain: Blueprint FIC → Agent ID FIC → user_fic.

Architecture

Same Workload Identity + auth-sidecar pattern as deploy-agent-aks-dev:

• AKS Workload Identity webhook projects the SA token at /var/run/secrets/azure/tokens/azure-identity-token.
• A FIC on the Blueprint app trusts system:serviceaccount:auid:backend-sa.
• The mcr.microsoft.com/entra-sdk/auth-sidecar container co-located with the FastAPI broker (localhost:5000) performs the full Blueprint → Agent ID → user_fic chain internally.
• Application code never touches login.microsoftonline.com.
• Weather Agent verifies the AUID JWT signature against the tenant JWKS.

Contents

• SKILL.md — Phase 1 (Entra setup) → Phase 2 (AKS deploy) → Phase 3 (smoke test) walkthrough.
• PERMISSIONS.md — exhaustive scope/role checklist matching the preflight script.
• scripts/ — 4 PowerShell scripts: preflight, provision agentUser, grant Graph consent, register Weather Agent app.
• deploy/aks/{scripts,manifests}/ — orchestrator + sub-scripts + 5 K8s manifests (backend pod has both broker and auth-sidecar containers).
• backend/, weather-agent/, ui/ — FastAPI broker, downstream service with full RS256 JWKS verification, single-page UI built into the three container images.
• .env.example.

Why now

Brings the AUID demo into the same self-contained skill structure used by the autonomous + OBO siblings, so a customer can be walked end-to-end purely from this folder. Local-only execution is explicitly not supported (Workload Identity is required for the sidecar's credential source — calling out the previous secret-in-app pattern that this replaces).

Provenance

Adapted from vj926/AgentUserID-using-EntraSDK-Deploy-using-AKS (branch migrate-to-auth-sidecar), which was in turn built on top of this repo's deploy-agent-aks-dev patterns.

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