fix(backend,runner): track GitHub App token expiry for proactive refresh #2788

Job	Run time
detect-changes	8s
build-and-push (backend, ./components/backend, quay.io/ambient_code/vteam_backend, ./components/b...	18m 8s
build-and-push (ambient-runner, ./components/runners, quay.io/ambient_code/vteam_claude_runner, ....	12m 14s
build-and-push (public-api, ./components/public-api, quay.io/ambient_code/vteam_public_api, ./com...	5s
build-and-push (frontend, ./components/frontend, quay.io/ambient_code/vteam_frontend, ./component...	5s
build-and-push (ambient-api-server, ./components/ambient-api-server, quay.io/ambient_code/vteam_a...	15m 52s
build-and-push (operator, ./components/operator, quay.io/ambient_code/vteam_operator, ./component...	6s
build-and-push (state-sync, ./components/runners/state-sync, quay.io/ambient_code/vteam_state_syn...	6s
update-rbac-and-crd	0s
deploy-with-disptach	0s
deploy-to-openshift	0s
	46m 44s

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