Grok Subagent v0.3.0

Highlights

• Surface Grok plan updates, tool activity, elapsed time, and bounded public response previews in Codex progress messages.
• Add revision-based long polling and a user-visible heartbeat for managed Grok sessions.
• Add a macOS interactive handoff mode that opens the official Grok Build TUI in a separate Terminal window.
• Keep interactive implementation work in a Grok-created linked worktree.

Safety

• Private thought chunks remain discarded.
• Interactive prompts use mode-0600 temporary files and are removed before Grok starts.
• Interactive handoff does not authorize commits, pushes, publication, or writes to the primary checkout.

Validation

• Node.js 22 and Node.js 24 CI passed.
• 9 core tests and the 9-tool MCP smoke test passed.