OpenCode v1.17.11 adds session revert

Adding session-state revert with automatic file rollback solves a major pain point in autonomous coding agents, where a bad plan can corrupt a codebase before the developer can intervene. Giving developers a native "undo" button for agent actions significantly lowers the risk of running complex prompts.

• –Snapshot-backed rollbacks: OpenCode's snapshot system tracks file changes per message, enabling developers to discard unsuccessful agent trajectories without manual git checkout or undo loops.
• –Performance tradeoffs: While enabled by default, the snapshotting feature can cause disk bloat or slowdowns on massive repositories, requiring manual deactivation via config files.
• –UX parity: The introduction of Chrome-style tab shortcuts and draggable tabs brings the desktop application's user experience closer to full-fledged IDEs.
• –MCP stability: Refinements to the Model Context Protocol (MCP) OAuth flow improve the reliability of third-party integrations and tools.