Class OpenCodeAdapter

tools/adapters/opencode.py:168–265

class OpenCodeAdapter(HarnessAdapter):
    harness_id = "opencode"

    def __init__(self, output_root: Path | None = None) -> None:
        super().__init__(output_root=output_root)
        self._seen_skill_ids: dict[str, str] = {}

    def emit_plugin(self, plugin: PluginSource) -> EmitResult:
        result = EmitResult()
        for skill in plugin.skills:
            self._emit_skill(plugin, skill, result)
        for agent in plugin.agents:
            self._emit_agent(plugin, agent, result)
        for cmd in plugin.commands:
            self._emit_command(plugin, cmd, result)
        return result

    def emit_global(self, plugins: list[PluginSource]) -> EmitResult:
        result = EmitResult()
        # Minimal opencode.json pointing at .opencode/
        # NOTE: only `$schema` is accepted as an extension key — OpenCode rejects others.
        config = {
            "$schema": "https://opencode.ai/config.json",
        }
        result.written.append(self.write("opencode.json", json.dumps(config, indent=2) + "\n"))
        return result

    # ── Internals ──────────────────────────────────────────────────────────

    def _emit_skill(self, plugin: PluginSource, skill: SkillSource, result: EmitResult) -> None:
        skill_id = _opencode_skill_id(plugin, skill)
        source_id = f"{plugin.name}/{skill.name}"
        existing_source = self._seen_skill_ids.get(skill_id)
        if existing_source and existing_source != source_id:
            raise ValueError(
                f"OpenCode skill id collision for `{skill_id}`: {existing_source} and {source_id}"
            )
        self._seen_skill_ids[skill_id] = source_id

        skill_dir = Path(".opencode") / "skills" / skill_id

        fm = dict(skill.frontmatter)
        fm["name"] = skill_id

        body = _rewrite_body_lowercase_tools(skill.body).rstrip() + "\n"
        content = _opencode_frontmatter(fm) + "\n\n" + body
        result.written.append(self.write(skill_dir / "SKILL.md", content))

        # Mirror all support files (references/, assets/, scripts/, examples/, etc.)
        # without decoding so binary assets keep working.
        for src in sorted(skill.dir.rglob("*")):
            if not src.is_file() or src.name == "SKILL.md":
                continue
            rel = src.relative_to(skill.dir)
            result.written.append(self.mirror_file(src, skill_dir / rel))

    def _emit_agent(self, plugin: PluginSource, agent: AgentSource, result: EmitResult) -> None:
        agent_id = f"{plugin.name}__{agent.name}"