Engineering Method 0.1.1 — OpenCode integration

Engineering Method 0.1.1

Released 2026-09-11. This patch adds a native OpenCode adapter and installer for
all 17 shared Engineering Method skills. It supports a Mac-hosted OpenCode
session accessed from T3 on another computer, including DeepSeek sessions.

Changes

• Additive native plugin hook registers the original skills and host instructions.
• Source-linked installation preserves relative script/resource paths and existing
  provider, permission and MCP configuration.
• Guarded check, idempotent install and exact-byte owned uninstall; foreign or
  modified loaders and symlinked destination parents are refused.
• Host adapter describes actual delegation, model and recovery boundaries.
• Installation docs cover native OpenCode, T3 helper refresh and removal.

Verification and acceptance

The integration has 317 passing local tests and independent code review. Native
OpenCode 1.18.30 discovered all 17 skills, and DeepSeek Flash loaded
verification-before-completion and executed a harmless verification command.
The user additionally confirmed skill loading from T3 on Windows with the Mac
as execution host. See EM-008 evidence.
Release validation includes a reproducible committed-source package and isolated
Claude/Codex native installation; the attached checksum identifies the release
archive. Existing shared skills and Claude/Codex adapters are unchanged.

The historical 0.1.0 acceptance retains its
original limits. No new full lifecycle, multi-agent or compaction acceptance is
claimed for OpenCode. Automatic Flash/Pro selection and agentic-rag lifecycle
hooks are separate work and are not included in this plugin release.

Install or update

Use installation and maintenance for Claude/Codex and
OpenCode installation for the source-linked loader. Keep the
OpenCode source checkout at its installed path and restart the helper/start a
fresh thread after an update. The downloadable package is
engineering-method-0.1.1.zip; verify it with the attached SHA256SUMS.