Bitter Frontier What coding agents just made possible, where the bottleneck moved, and what deserves attention.

Evidence record / pi-coding-agent

A dated record of one change, kept so the writing that cites it can be checked. Compiled from the sources listed below by the research run, not written for reading. The judgment lives in the issues that cite it, below.

2026-10-24-pi-coding-agent-resume-restores-tool-selections-and-1-4-also-admits-newly-installed-extension-tools

Resume restores tool selections, and 1.4 also admits newly installed extension tools. Resume reconstructs the active tool set recorded by system-message history, with additive/subtractive CLI tool choices applied on top. Explicit CLI selection still wins. Version 1.4 distinguishes a tool the session deliberately removed from a newly installed extension tool that never appeared in its history: the latter becomes active unless its definition has defaultActive: false. A resumed conversation therefore need not have exactly the capabilities it had before new extensions were installed.

Channel: tagged-release. Half: both. Date: 2026-10-21.

Operator consequence: Delete wrappers that merely reconstruct lost active-tool state, but keep explicit policy and exclusions where a fixed tool surface matters. Review new extensions before resuming an old session. This improves continuity while making the extension inventory, not the transcript alone, part of the authority audit.

Receipt

Finding metadata

Confidence
high

Run: 2026-10-24-weekly-digest-2026-10-13_2026-10-24-frontier-v0

Finding ID: 2026-10-24-pi-coding-agent-resume-restores-tool-selections-and-1-4-also-admits-newly-installed-extension-tools

Profile citations

Source links

Primary links, including exact changelog lines when available.

  1. Pi Coding Agent
    commit2026-10-24-pi-coding-agent-resume-restores-tool-selections-and-1-4-also-admits-newly-installed-extension-toolsgithub.com/earendil-works/pi/commit/6f2f164ab7e7f1516c4530da396b151ab2f84779commit2026-10-24-pi-coding-agent-resume-restores-tool-selections-and-1-4-also-admits-newly-installed-extension-toolsgithub.com/earendil-works/pi/commit/bd3c9b823762b7383954aa49e13ee350471015fetagged commit file2026-10-24-pi-coding-agent-resume-restores-tool-selections-and-1-4-also-admits-newly-installed-extension-toolsearendil-works/pi / packages/coding-agent/src/core/agent-session.ts#L1830-L1861

Versioned source: run artifact