chat-trash

Permanently delete a chat from the DeepSeek Harness sidebar — no archive copy left behind.

Built by mars-area.

One entry appears in a Session's ··· menu in the sidebar:

• Delete chat… — confirms, then removes the chat: its running turn is stopped, its workspace membership, pin and archive marks are cleared, and its stored log and projection cache are deleted. The page reloads; the chat is gone from every view, not moved to the archive and not kept in a trash folder.

The row is drawn with MenuItemButton from @deepseek-ai/dsh-client-ui-primitives, the same primitive the shipped Pin, Rename, Fork and Archive rows use, and carries the app's IconTrashOutlineRegular trash icon — so its type, weight, padding, icon size and hover treatment match the rest of the menu rather than imitating it.

Install

1. In the Harness Web UI open Plugins in the sidebar.

2. Add plugin → Install a third-party plugin.

3. Enter the repository URL:

   https://github.com/mars-area/dsh-chat-trash
   

   The short form github:mars-area/dsh-chat-trash works too.

4. Install, then switch the chat-trash bundle on if it is not on yet.

5. Open a chat's ··· menu in the sidebar: Delete chat… is the last row.

To work on the plugin, install your local checkout instead by entering its absolute path (C:\Users\<user>\projects\dsh-chat-trash); toggle the bundle off and on after editing client.js or index.js.

What a delete does

1. Stops any running turn, job, subagent or scheduled reminder of that chat.
2. Takes the live Session out of the session store, so the sidebar stops listing it at once and persistence drains its last events and closes the log handle. Without this step a chat deleted only on disk lingered under Ungrouped until the next launch.
3. Clears the chat's pin, its workspace membership and any archive mark, so no row or archived copy survives anywhere.
4. Deletes <DSH_HOME>/sessions/<workspace>/<session-id>/ and its <DSH_HOME>/storages/session_projcache row.
5. Reloads the page, so the conversation pane cannot keep showing a chat whose log no longer exists.

An open but idle chat is deletable. DSH keeps every chat you have opened live in memory for the run, so "is this chat open?" is not a usable test — the plugin does not make it.

There is no undo

The log is deleted, not archived, so keep a copy first when it matters: use the Session header's Download session log action or the /export command, which writes a ZIP of the session, its sub-sessions and attachments.

Limits

• DSH has no delete API by design, so this bundle edits the persistence directory behind the seam. A future Harness version may change the log layout or the sidebar.workspaces.session.menu.item contract; the plugin then fails loudly (the button reports the error) or stops appearing, and should be updated.
• Deleting only affects this machine. Logs already uploaded by Settings → General → Upload Session Log when using the official model API cannot be reached from here.
• Turning the bundle off in Plugins removes the menu row; chats already deleted stay deleted.

Credit

Made by mars-area. Issues and patches belong there.

Files

File	Role
index.js	Host half: the delete route, work stop, membership cleanup, file removal
client.js	Browser half: the menu row, its icon and confirmation
icon.png	Bundle artwork shown on the Plugins page (256×256 PNG)
cordis.patch.yml	Inserts the plugin row into the profile
test-host.mjs	Smoke test of the host half against a throwaway DSH_HOME (not shipped)
test-client.mjs	Smoke test of the browser half against a stub module loader (not shipped)

Run both with any Node 22+:

# browser half: factory, requires, slot registration, row props
node test-client.mjs

# host half: stop, detach, delete, refusals
$env:DSH_HOME = "$env:TEMP\chat-trash-test\home"
$env:TEST_HOME = $env:DSH_HOME
$env:PLUGIN_INDEX = "$env:TEMP\chat-trash-test\index.mjs"
node test-host.mjs