Release v0.7.3

What's Changed

Features

• Added delegated command tracking for unknown and gated commands, improving visibility into commands Boost passes through without optimization.
• Moved background auto-update checks into boost sync, with hourly throttling and a global opt-out.

Bug Fixes

• Ensured boost update installs boost-sync.sh and registers the Stop hook when refreshing older installs.
• Fixed terms-acceptance handling during initialization.
• Updated delegated-command CI expectations for shell-style command not found behavior.

Full Changelog: v0.7.2...v0.7.3