v0.2.0

What's new

• Codex usage guard: detects rate-limit signals in Codex transcript rollout files (~/.codex/sessions/**/rollout-*.jsonl) and offers a handoff before the next prompt.
• Per-window thresholds: configure independent handoff_percent for Claude's 5-hour / weekly / extra and Codex's 5-hour / weekly windows under limits.windows.
• Agent-authored handoffs: baton handoff --file <path> registers a complete Markdown handoff written by the handing-off agent, with Baton evidence (git status, diff, last commits) appended.
• Auto-install Codex hooks: baton init now installs Codex usage hooks into ~/.codex/hooks.json so handoff prompts work for Codex out of the box.
• Config threading: BatonConfig is now threaded through codex, watch, and usage instead of bare threshold percentages.