Route OpenCode (and its Kilo sibling) through the public Host-Integration Interface and
land two Context7-verified capability upgrades. Byte-identical install output for all 16
runtimes (golden parity asserted).
Through the interface (AC2):
- OpenCode/Kilo's bespoke commands+skills+plugin install (the inline
`else if (isOpencode || isKilo)` block) moves into the engine
(installOpencodeFamilyCommands/Artifacts in src/install-engine.cts), dispatched by
installRuntimeArtifacts when the descriptor declares hostBehaviors.combinedFamilyInstall.
opencode/kilo now flow CLI -> _runtimeAdapter -> installRuntimeArtifacts like the skills
runtimes. _isSkillsRuntime no longer excludes them; the bespoke block + dead
copyFlattenedCommands are removed.
- Every hardcoded `runtime === 'opencode'`/`isOpencode` branch is folded into
descriptor-driven runtime.hostBehaviors. ZERO `runtime === 'opencode'`/`'kilo'`
string-equality remain in bin/install.js / install-engine.cts / runtime-artifact-conversion.cts.
Upgrades (AC4):
- Background dispatch: OpenCode shipped experimental background subagents in v1.15 and
made them default-on in v1.17 -> dispatch.background/backgroundDispatch flip to true;
shouldFlattenDispatch(opencode) now returns false (behavioral change; type: Changed).
- Expanded event surface: the OpenCode plugin subscribes permission.asked/replied +
session.error.
Tests: opencode-imperative-reference (adapter/profile, shouldFlattenDispatch pin,
fail-closed negotiate, hostBehaviors, AC2 source-guard) + extended plugin surface test.
Docs: capability matrix v1.15/v1.17 citations. Changeset (Changed). gitignore .memdb//.memtrace/.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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