[codex] reconcile cloud runtime drift

[Pigbibi]

Summary

• add Firstrade Cloud Run traffic reconciler
• delete only legacy session-check schedulers
• preserve probe/precheck invoke-bridge scheduler jobs

Validation

• python3 -m unittest tests/test_reconcile_cloud_runtime.py -v
• python3 -m pytest tests/test_sync_cloud_run_env_workflow.py -q
• python3 YAML parse for .github/workflows/sync-cloud-run-env.yml
• git diff --check

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