A composition that shares one `isolate` realm across rows needs a `cordis:group` row, and a preset living outside this workspace — the authored ones under the Harness home — cannot resolve `@cordisjs/plugin-group` by name: Node's upward `node_modules` walk never reaches the harness from there. Registering it as a loader builtin beside `cordis:include` loads both through the ambient module pipeline instead. Record it in the preset Agent Note, which leans on the realm vocabulary without saying where the group row comes from, and drop the preset README's limitation claiming this builtin is unavailable — it described the state this change ends. The test's assertion had a vacuous escape: `provide` mints the root symbol unconditionally, so the `rootKey === undefined` disjunct could never hold and the comment claiming the root realm never learned the name was wrong. Pin both halves — the symbol exists, nothing is stored under it — and clean up the global the fixture writes.
ui/ — human and SDK-client integration surfaces
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Human-facing channels and the out-of-process SDK server. These are product packages: real interfaces that a person or SDK client drives.
| Package | Role | ctx key |
|---|---|---|
commands/ |
Registers and dispatches human commands for interactive adapters. | ctx.commands |
user-approval/ |
Coordinates one-shot approval decisions. | ctx.approval |
permission/ |
Presents and persists user-facing permission presets. | ctx.permission |
user-interaction/ |
Defines the provider-neutral human question/answer seam. | ctx.userInteraction |
tool-ask-user/ |
Exposes human questions to the model. | (registers on ctx.tools) |
jsonrpc/ |
Serves out-of-process SDK clients over stdio JSON-RPC. | (drives ctx.agents) |
app-boot/ |
Provides shared boot support for application launchers. | (library for the bins) |
These packages integrate through existing agent and session contracts rather than changing the loop. Interactive applications provide the concrete command, approval, and question adapters; automation uses acp/, and runnable demo bundles live under examples/. The product dsh CLI composes these packages directly.