* feat(antigravity): bridge IDE history into new CLI conversations
* fix(antigravity): preserve fresh-launch model and environment for IDE references
* fix(antigravity): forward IDE history opt-in through desktop IPC
* fix(antigravity): rebuild remote IDE reference startup on its host
* fix(antigravity): register IDE continuation action labels
* fix(antigravity): confine IDE references and bound metadata reads
* fix(antigravity): localize IDE continuation badges
* Preserve scanner service cache assertions and refresh Antigravity opening metadata
* Preserve Antigravity opening joins and target folder runtime authority