AI BriefingJetBrains ThinkRail Supports Parallel Execution of Pi Agent Git Worktrees and Turn-Based Review
·2026.10.30 17:30
Key point
JetBrains released ThinkRail v0.2.0, an IDE with the Pi coding agent embedded.
Details
- JetBrains incubator project ThinkRail v0.2.0 was released on October 18, 2026
- Embeds the terminal coding agent Pi as a library to run in the web UI and desktop app
- Isolates workspaces per Git worktree for parallel execution and reviews changes on a turn-by-turn basis
- Distributed under the Apache-2.0 license; the macOS Intel build has not yet been released
Key Features and Architecture
- Runs Pi as an npm package without forking it; Pi handles the model list and session state
- Composed of a 3-tier architecture (engine host, communication protocol, web UI)
- Provided as an Electrobun-based desktop app and a browser-based CLI
Worktree and Review Method
- Each workspace has a separate branch and directory, with files and conversations isolated
- Detects changes by comparing worktree states rather than agent tool call logs
- Allows Keep/Revert and agent questions at the Hunk level in branch diffs
Compatibility and Limitations
- Does not support other agent runtimes such as Claude Code or Codex CLI
- Shares the Pi configuration folder to enable session migration between CLIs
- macOS Intel users need to build from source; Windows is signed and Linux is unsigned
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