Pairs with terraform-authentik#10: request the litellm_role scope (Authentik
emits the computed role claim) and read it via GENERIC_USER_ROLE_ATTRIBUTE so
akP-litellm-admin -> proxy_admin, akP-litellm-user -> internal_user.
App-side of the LiteLLM Authentik onboarding (terraform-authentik#8). Configures
LiteLLM's generic OIDC SSO against Authentik.
- VaultStaticSecret oauth-credentials: surfaces the OIDC client secret (same
secret Authentik sets on the provider) as a k8s Secret.
- Deployment: GENERIC_CLIENT_SECRET from that Secret.
- litellm-env: GENERIC_CLIENT_ID, authorization/token/userinfo endpoints, scope,
and PROXY_BASE_URL (required for SSO). reloader restarts on secret/config change.
## Summary
- Replace `Ingress` (nginx) with `Gateway` + `HTTPRoute` using `traefik-internal` GatewayClass
- TLS terminated at the Gateway listener; cert-manager provisions the certificate via `vault-issuer`
- external-dns annotations moved to the Gateway
## Test plan
- [ ] ArgoCD syncs the litellm app cleanly
- [ ] cert-manager issues the `litellm-tls` certificate
- [ ] external-dns creates the DNS record
- [ ] `https://litellm.k8s.syd1.au.unkin.net` is reachable
Reviewed-on: #134
Deploys LiteLLM proxy with CNPG PostgreSQL (3-instance HA), PgBouncer
pooler, and Redis cache. Introduces a dedicated aitooling AppProject and
ApplicationSet to keep AI tooling services separate from platform infra.
Reviewed-on: #94
unkinben