Part **2 of 3** of the IR-driven lifecycle cutover (stacked on #2341; top is #2335). **Scope (80 files, packages/engine + cli/pi skill docs + AGENTS/architecture):** graph-driven column moves via the column-boundary controller (R1), single-mover scheduler/hold-release trait cutover (KTD-2/KTD-9), trait re-keyed self-healing + merger with the R7b confirmed-merge-must-finalize guarantee, graph-exclusive Plan Review with leased dedup (R4/R5), the executeCore body-lift — zero legacy re-entry — with fn_review_step + interceptor machinery deleted and tombstone-ratcheted (R9), builtin workflow runtime fixes (missing hold handler, unseamed-node column inheritance, no-merge completion mover), the 6-column benchmark acceptance suite (11 tests) + 12-builtin lifecycle sweep (94 assertions), and the executor test-harness modernization. Also retires core's interpreter-cutover scaffolding whose last consumer (the authoritative driver) dies here. **Merge order:** #2341 → this → #2335. After #2341 merges, retarget this to main. 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
pi-claude-cli
A pi extension that routes LLM calls through the Claude Code CLI as a subprocess. Use your Claude Pro/Max subscription as the LLM backend — no API key, no separate billing.
How it works
The extension registers as a custom pi provider exposing all Claude models. Each request spawns a claude -p subprocess using the stream-json wire protocol, with --resume on follow-up turns to reuse the CLI's session state instead of replaying full history. Claude proposes tool calls, pi executes them natively. Custom pi tools are exposed to Claude via a schema-only MCP server.
Requirements
- Claude Code CLI installed and authenticated (
claudeon PATH) - A Claude Pro or Max subscription
- pi or GSD
Installation
Add to ~/.gsd/agent/settings.json:
{
"packages": ["npm:pi-claude-cli"]
}
Then select a Claude model via /model in the interactive UI. All Claude models appear under the pi-claude-cli provider.
Features
- Streams text, thinking, and tool call tokens in real-time
- Maps tool names and arguments bidirectionally between Claude and pi
- Exposes custom pi tools to Claude via MCP (schema-only, no execution)
- Break-early pattern prevents Claude CLI from auto-executing tools
- Session resume via
--resumeeliminates history replay on follow-up turns - Configurable thinking effort with elevated budgets for Opus models
- Cross-platform subprocess management (Windows, macOS, Linux)
- Inactivity timeout and process registry for cleanup
License
MIT