dsh-session-cleaner

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Delete DeepSeek Harness sessions from a running web runtime — files, live store, and workspace records — without restarting dsh web.

The official web API only offers workspace.archiveSession (hide); there is no session.delete. This bundle closes that gap.

Install

dsh plugin --profile web add dsh-session-cleaner            # from npm
dsh plugin --profile web add github:fountunt/dsh-session-cleaner   # from git

# or from a local checkout
dsh plugin --profile web add file:/path/to/dsh-session-cleaner

Then restart dsh web (a running instance does not hot-load new bundles).

Usage

Web UI (v0.2.0+)

The client half adds two ways to delete a session from the UI:

• a 🗑 delete button in the conversation header action area (v0.2.0);
• a 🗑 "Delete session" item at the bottom of the sidebar session row ⋮ menu (v0.2.1) — the item is skipped when the row title is ambiguous.

Click, confirm, and the session is deleted and the sidebar refreshes. The button is disabled while the session is running, and sessions with an attached agent are refused by the server — the current conversation can never be deleted.

API

The plugin registers one route on the web server:

POST /api-ext/session.delete
Content-Type: application/json

{ "sessionId": "session-1bb8d361-ea6b-4b92-bab2-c858c92e8822" }

Same-origin calls work from the browser console of the harness page:

await fetch("/api-ext/session.delete", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({ sessionId: "session-1bb8d361-ea6b-4b92-bab2-c858c92e8822" }),
}).then(r => r.json());

Response envelope (mirrors the host's RPC style):

{ "ok": true, "value": { "detached": true, "workspaces": 1, "files": 1 } }
{ "ok": false, "error": { "code": "refused", "message": "..." } }

• detached — the session was removed from the in-memory live store (this is what makes it disappear from the sidebar immediately, without a restart).
• workspaces — how many workspace records the session was detached from.
• files — how many on-disk artifact directories were removed.

Safety

• Sessions with an attached agent (running or idle) are refused — the current conversation can never be deleted through this endpoint.
• Deletion is irreversible: artifacts, workspace membership, and the live entry are all removed. The session-projection cache may keep a harmless stale row until the next restart.

How it works

session.list is served from the live SessionStore plus a disk scan. Cold sessions get prepared into the live store while being listed, so after their files are deleted they linger as "ghosts" until the server restarts. This plugin removes the live entry (the store's own detach path), detaches the session from workspace records, and deletes the on-disk artifact directory — so the row disappears immediately and permanently.

Development

pnpm install        # peer: @deepseek-ai/cordis
node --test test/   # unit tests

License

MIT