Automation for post-approval run confirmations

When a stack has Autodeploy enabled and a run reaches UNCONFIRMED due solely to a pending policy approval (not a manual review requirement), approving that policy should auto-confirm the run and let it proceed to apply — no separate manual click.

Reviewed documentation on enabling Autodeploy, which allows approved runs to proceed automatically, and using plan policies that return `warn` to require review only when necessary.

Setup involves plan policies issuing warnings, approval policies requiring manual approval, and notifications via Slack, but the final confirmation step remains manual, which can be unintuitive. Exploring if this manual confirmation can be eliminated or automated.