Files
deepseek-harness/packages/host
creatixchu 7fd2abd828 feat(host): directory-picker capability seam with dialog and browse backends
The web GUI's folder picking was hardwired to one interaction: a native
OS chooser compiled into the gateway, unusable for remote deployments
and swappable only by editing apiproxy source.

Directory picking becomes a three-package capability seam in
packages/host: ctx.directoryPicker returns a discriminated capability —
dialog (the extracted native chooser; host-display only) or browse
(new: one-level listing + child creation over Node stdlib, hidden flags
host-stamped, symlinks followed, ancestry crumbs; remote-capable). The
gateway injects the seam, advertises the kind via
host.describe.directoryPicker, serves host.listDirectory /
host.createDirectory under browse, and answers
directory-picker-unavailable across kinds. cordis.yml is the swap
point; apps/cli keeps dialog mounted, so behavior is unchanged until
the in-app browser PR flips the default. The connection fixture serves
a deterministic browse tree; WorkspacesService gains the browse calls
the browser UI will drive. Decision record:
.agents/notes/implemented/architecture/2026-07-28-directory-picker-capability-seam.md
2026-07-28 15:44:53 +08:00
..

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 serving apps/web. All product packages.

Package Role ctx key
apiproxy/ The shared API gateway: the zero-Node TS wire contract (src/api/), the fetch carrier pair (toFetchHandler host-side, AbstractApiClient client-side), and the host implementation over ctx.agents/ctx.workspace ctx.apiProxy
webserver/ Plain HTTP route-registration carrier: node:http server listening on activation; routes register as named exact/prefix handlers ctx.httpServer
directory-picker/ Workspace-directory picking seam: discriminated dialog/browse capability the gateway's picker RPCs delegate to ctx.directoryPicker
directory-picker-dialog/ Native-OS-chooser backend (osascript / PowerShell / Zenity+KDialog); host-display only (registers ctx.directoryPicker)
directory-picker-browse/ In-app browsing backend: listing/creation primitives over Node stdlib; remote-capable (registers ctx.directoryPicker)

apiproxy is transport-agnostic by design — it registers no routes; carriers wrap ctx.apiProxy themselves. The HTTP carrier route (with its /api browser-trust fence) is mounted by client/connection's node half, which is why that package lives in the client group: it owns both ends of the wire.