Review found two defects in the previous commit's ordering fix. @pku-xht: `historyStateFor` copied the attached session's events, the handler then awaited `presenterScopeFor`, and only then read the projection baseline off the still-live Session. An append during that await served events cut at N beside a baseline folded to N+1 — one response describing two moments. The same restructure had also moved the baseline read outside the `try`, so a failing snapshot escaped the structured `internal` error. Both awaits now happen before the cut: `historySourceFor` resolves which session serves the read, `presenterScopeFor` ensures the recorded composition, and `historyCutOf` then reads events and baseline adjacently with nothing between them. The whole sequence is back inside the try. The invariant judged any scoped assembly with a chain of one as an unjoined agent, which rejects a legitimate assembly in a standing preset key (that key has no parent of its own). It now gates on `context.agent` — a scope-only read is not an agent and is out of range by construction rather than by a premise about who else calls `assemble` — and asks the roster's own `composedPreset()` instead of introspecting chain length. The advisory warning uses the same relation. Also from review: the `2026-08-05-per-agent-tool-presentation` note still described `presentAs` as per-agent, which standing mounts made false and this branch's own rewording contradicts; the duplicated "process-wide unit table" argument collapses to the Agent Note with pointers from the five copies; a dead `.sort()` before `arrayContaining`; and change-history narration in the tool-cordis README.
host/ — web-GUI host half
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The host side of the dsh web GUI: the API gateway every client shape shares, and the plain HTTP server it rides on. The browser side lives in client/; the composed application is apps/cli booting the dsh-base bundle serving apps/web. All product packages.
| Package | Role | ctx key |
|---|---|---|
apiproxy/ |
Shared host API gateway and wire contract | ctx.apiProxy |
webserver/ |
HTTP route carrier | ctx.httpServer |
frontend-static/ |
SPA dist server on the webserver fallback seat | consumes ctx.httpServer |
directory-picker/ |
Workspace-directory picking seam | ctx.directoryPicker |
directory-picker-native/ |
Native directory-picker backend and browser interaction | registers ctx.directoryPicker |
directory-picker-browse/ |
In-app directory-browser backend and interaction | registers ctx.directoryPicker |
directory-picker-auto/ |
Host-adaptive picker composition | mounts a backend |
apiproxy remains transport-independent; client/connection supplies the browser/HTTP carrier. Picker implementations replace one another behind the shared seam.
The subsystem references: http-server.md and workspace.md (the picker seam).