Live-subscribing to a public artifact now stops cleanly on org mismatch, not-found, or public-outside-org cases
The internal helper that live-subscribes to a public artifact now starts the artifact's watch (tracking for new versions) as part of subscribing, via a watchBoot setting. It also now recognizes three failure cases instead of two: public_outside_org, not_found, and other_org. In each case it stops any running task tied to that artifact and reports a read_stopped_... telemetry event along with advice text.
This makes live-subscribing to a public artifact more robust: if the artifact turns out to belong to a different organization, doesn't exist, or is public but outside the current organization, Claude Code now stops cleanly and gives context about why, instead of the earlier handling that only covered two of these cases.