# mattpocock-skills-opencode

OpenCode v2 integration for the [Matt Pocock skills](https://github.com/mattpocock/skills) ecosystem.
Upstream is the source of truth for the methodology; OpenCode v2 is the source of truth for execution
architecture. We translate, never copy Claude Code's plugin architecture.

## Session start protocol (long-running project)

1. `git status` + current branch — never destroy uncommitted work.
2. Read `TODO.md` — the persistent task list.
3. Read `.opencode/state/status.md` — current phase and last completed work.
4. Read `.opencode/state/decisions.md` — binding decisions; don't re-litigate them without new evidence.
5. Read `.opencode/state/upstream.json` — last synchronized upstream revision.
6. Pick the highest-value unfinished task from `TODO.md` and continue.

Before context runs low: update `status.md` + `TODO.md`, record failures and exact next steps, commit
safe intermediate work.

## Layout

- `upstream/` — pristine vendored snapshot of mattpocock/skills (`skills/` subtree). **Never hand-edit.**
  Updated only by `scripts/sync-upstream.ts`.
- `skills/` — generated OpenCode skill tree + `manifest.json` (output of `scripts/generate.ts`). Hand-edit
  only the overlay inputs under `overlay/`, never the output.
- `agents/` — generated OpenCode v2 agent markdown files. Edit templates in `agent-templates/`, then regenerate.
- `.opencode/state/` — machine- and human-readable project state (upstream revision, classification, status).
- `docs/architecture.md` — the design. `docs/skill-mapping.md` — per-skill classification record (generated
  from `.opencode/state/classification.json`).
- `scripts/` — sync, generate, release (Gitea npm registry publish without `npm publish`), smoke.
- `test/` — `node --test` on TypeScript sources directly (Node ≥ 22.18 type stripping, like the reference repo).

## Conventions

- TypeScript ESM, `type: module`, prettier (`semi: false`, `printWidth: 100`), `tsc --noEmit` gate.
- Generated agent frontmatter uses **V2-native fields only**: `mode`, `description`, `model`
  (`provider/model#variant`), `permissions` (array of `{action, resource, effect}`), `steps`, `hidden`,
  `request` (sparingly — body overlays are not sent by the runner yet). Never `prompt`, `permission`,
  `tools`, `disable`, `maxSteps`, `temperature` at top level.
- Commits: `sync:`, `feat:`, `fix:`, `test:`, `chore:`, `docs:` — logically separated, conventional style.
- Versioning: semver; `CHANGELOG.md` `## [x.y.z]` headings are the release source of truth
  (fastcrw pattern). Upstream revision tracked separately in state + changelog entries.
- Registry credentials only from Gitea Action secrets (`PACKAGE_TOKEN`). Never commit them.

## Key V2 facts this repo relies on (verified 2026-10-14 against opencode docs/source)

- Plugins: `Plugin.define({ id, setup(ctx) })` from `@opencode/plugin`; config key `plugins`;
  npm package needs `type: module` + `exports["."]`.
- `ctx.skill.transform(editor)` **can add** skills programmatically (id, name, description, path,
  content, autoinvoke, slash). `ctx.agent.transform(editor)` **cannot add** agents — only
  list/get/update/remove/default. Hence: skills ship via plugin injection, agents via `init` copy.
- Skills frontmatter honored: `name`, `description`, `slash`, `disable-model-invocation` /
  `metadata.opencode/autoinvoke` (hidden from model, still loadable by id/slash).
- Agent files: `.opencode/agents/<name>.md` (project), `~/.config/opencode/agents/` (global);
  frontmatter = agent config, body = system prompt.
- Permission rules are ordered, last match wins; per-agent skill restrictions via
  `{action: "skill", resource: "<pattern>", effect: ...}`. Shell action is `shell` in V2.
- Agent `steps` replaces `maxSteps`; `temperature`/`top_p` go under `request.body` (not yet sent by
  the runner — avoid).