v3.0.0 — portable agent authoring across all toolkits

Breaking packaging update: adopts Portable Agent Authoring across all seven toolkits, removes the local multi-harness guide in favor of the upstream guide, adds repository instruction bridges, and pins the migrated toolkit releases.

Full Changelog: v2.1.0...v3.0.0

v2.1.0 — seventh toolkit: cross-cli-handshake

Adds the cross-cli-handshake submodule (pinned at v1.0.0): the Cross-CLI Role Handshake — one canonical delegation policy turning claude, codex, and agy into each other's pseudo-subagents, loop-safe via role markers.

• Umbrella README toolkit table updated to seven toolkits
• Unlike the other toolkits, cross-cli-handshake is user-global and user-machine only — it configures the CLIs themselves and has no project-level install and no Cline/Cursor targets

v2.0.0 — the user-global model

Breaking: the whole family moves to the user-global model (defined in MULTI-HARNESS-SUPPORT.md, summarized in docs/conventions.md), for Codex, Claude Code, Antigravity, Cline, and Cursor:

1. All tooling is user-global. Skills, rules, and workflows install once per user into each harness's global discovery paths via the agent-guided AGENT-INSTALL.md (clone / zip / gh, then copy). Install scripts are gone.
2. All project truth is committed. DOX.md trees and root AGENTS.md/CLAUDE.md anchors, .goal-ledger/ records, copied design/ artifacts, compose-helper.*, generated agentic tests — written by skills doing their job, never gitignored.
3. Installs never write into projects — not even .gitignore. Globally loaded rules self-gate on project state.

Pinned toolkit releases: dox v4.0.0 · compose-helper v4.0.0 · goal-ledger v3.0.0 · agentic-tests v2.0.0 · playwright-fieldkit v2.0.0 · lazyway-io-design v3.0.0.

Global discovery targets were verified 2026-07-20 by live probes (codex-cli 0.144.6, Antigravity CLI 1.1.4) plus current official docs for Claude Code, Cline, and Cursor — Cursor needs no separate install target; it discovers the shared ~/.agents/skills/ copies natively.

Migration from v1: re-run each toolkit's install prompt once per user; old gitignored project adapters and marker ignore blocks in consuming projects can be removed manually (with review).

v1.0.0 — Agent Commons umbrella

First release of the Agent Commons umbrella.

What's here

• Six toolkit submodules, each pinned at its current release: dox v3.1.0, goal-ledger v2.1.0, agentic-tests v1.0.0, playwright-fieldkit v1.0.1, compose-helper v3.0.0, lazyway-io-design v2.0.0.
• MULTI-HARNESS-SUPPORT.md — the authoritative playbook for portable Agent Skills and rules across OpenAI Codex, Anthropic Claude Code, Google Antigravity, and Cline.
• docs/ — getting started, the shared layout/install/gitignore conventions, and an authoring guide for new toolkits.

Every toolkit follows the same contract: canonical sources in skills/shared/ and rules/shared/, agent-guided install first (AGENT-INSTALL.md) with script fallback, gitignored adapters, and committed conditional bridges.

Clone with git clone --recurse-submodules https://github.com/jpbaking/agent-commons.git.