dsh-session-drafts

Cursor-style New Session for DeepSeek Harness (DSH): every click mints a fresh durable blank session — persisted in Session persistence before the first message is ever sent — so you can keep several empty chats open at once, exactly like Cursor's new-chat tabs.

The stock web shell reuses a workspace's single blank session (one empty chat per workspace, silently). This plugin removes that cap and adds a sidebar Drafts switcher to manage the empties.

What it does

1. Fresh drafts, never reuse. workspaces.startSession — the one service entry behind every New Session surface (sidebar button, workspace browser, agent preset) — is patched on the live WorkspaceRuntime instance to always call session.create (which persists the Session entity host-side) and open the result. The stock target policy is preserved: explicit workspace → current session's workspace → recent workspace; no workspace at all still clears into the pure New Session view.
2. Drafts switcher. The stock sidebar tree hides blank sessions other than the current one. An add-on sidebar.footer.action entry renders a Drafts (N) trigger above Settings with a popover that lists every blank draft (workspace label + age, newest first): click to switch, × to discard (workspace archive — the row hides, the session log remains), or mint another draft from the panel footer.
3. Zero core edits. Instance-level property shadowing guarded by a Symbol.for marker (idempotent across HMR), restored on plugin unload, falling back to the stock method on any synchronous failure. No harness files are modified.

Install

dsh plugin --profile web add link:/path/to/dsh-session-drafts
# or from a published copy:
dsh plugin --profile web add @ne-ilyxa/dsh-session-drafts

Then restart the DSH web host (a profile boot composes the client bundle into the boot graph; hot activation is not attempted by this plugin).

Verify it works

1. Click New Session twice — two empty chats now coexist (watch the Drafts count go up; no reuse jump).
2. Open Drafts in the sidebar foot, switch between the empties, discard one with ×.
3. Host truth: each click produced a session.create — sessions survive a page refresh and the host restart.

Screenshots

Three New Session clicks on one workspace — three independent durable drafts (plus the initial one), no reuse:

Switching between drafts — the accent bar marks the current one:

Development

pnpm install
pnpm run check     # typecheck + build + node --test tests/*.test.mjs
pnpm run build     # host no-op + browser bundle (lib/client.js, module-loader wrapped)

Layout:

• src/index.ts — host half, a deliberate no-op (the package must be a loadable Profile Bundle; all behavior is browser-side).
• src/client/index.tsx — browser half: the startSession patch, pure draft derivation (selectDraftRows, draftAge), the Drafts widget, zh/en dictionaries.
• tests/ — pure-logic tests over the built bundle (VM-loaded with mocked externals) + package-layout guards.

Compatibility

• DSH client runtime 0.1.0-rc.8-era slot/service names (sidebar.footer.action, workspaces.startSession, sessions.create, workspaces.archiveSession).
• The patch degrades loudly-but-safely: if the runtime shape ever drifts, a console warning fires and New Session stays stock.

License

BSD-3-Clause © ne-ilyxa