youqu68/dsh-delete-chat

A DeepSeek Harness session manager: a settings page that lists every session and lets you archive (hide), unarchive (restore), and permanently delete sessions.

一个 DeepSeek Harness 会话管理插件：在设置页中列出全部会话，并支持归档（隐藏）、取消归档（恢复显示）与永久删除会话。

Works with the official @deepseek-ai/dsh 0.2.x harness (verified against 0.2.1-rc.2) and with the 0.1.x line. One codebase: the few seams that changed between the lines are feature-detected at runtime.

What it does / 功能

• List every session with its title, working directory, and creation time, split into archived and active groups. Sessions whose log is still an older format generation are marked 旧格式.
• Archive a session to hide it from the sidebar. If the session still has running work, the page says what is running and offers 停止并归档 — the same stop-and-archive decision the native sidebar asks for. Archiving is fully reversible.
• Unarchive a session to make it visible again.
• Delete a session permanently: removes every canonical log generation in the session's own directory, then the now-empty directory, then detaches it from workspace accounting and from the archive set.

Permanent deletion does not exist in the official harness, so that — plus the two-step confirmation that shows the exact files — is this plugin's unique value. Archive/unarchive duplicate the native sidebar on 0.2.x; they are kept for the 0.1.x line and for doing everything from one page.

Install / 安装

dsh plugin --profile web add dsh-delete-chat

The package declares dsh.bundle.patch, so the command installs it and reconciles it into dsh.profile.bundles — no profile file editing. Restart dsh web to mount it.

The package must be installed under its bare package name (not by absolute path): the host-face Typert manifest is resolved by package name, and a path-mounted row would load the browser half but never register remote.delChat.*.

Usage / 使用

Open Settings → 会话管理 (Session Manager).

Safety / 安全边界

• Archive is not delete. Archiving only hides a session; its log stays on disk and 取消归档 restores it.
• Live sessions cannot be deleted. A running session's delete button is disabled, and the host refuses the call even if it is reached directly. A created-but-never-flushed session owns no file and is refused too.
• Delete is permanent and two-step. The first click shows the exact path (and every generation file) that will be removed; only a second click deletes anything.
• Only the session's own artifacts are touched. The directory comes from the persistence backend's own locate(), and the plugin then requires that the directory's name is exactly the session id, and only removes basenames matching the backend's canonical generation names — session.jsonl, session[.vN].jsonl, each optionally .zstd. Anything else in that directory survives, and the directory itself is removed only when empty (the POSIX session.lock lease file is cleared as session-owned debris).
• Why deletion is in-process. A host plugin is trusted in-process code; the previous shell-based removal inherited the deployment's file policy (so a deployment whose default write root did not cover the session store could not delete) and its PowerShell command never worked on macOS/Linux. The path still comes from the backend and is validated here, never from the caller.
• Projection-cache and search rows. The per-session projection checkpoint under $DSH_HOME/storages/session_projcache is left alone by design: reads validate it against the log's identity, so a stale row is never served for a deleted session. Full-text search is disabled in the shipped Web profile; if a deployment enables it, the index reconciles deleted sources on its next observation — no restart needed.

Architecture / 结构

One dual-face package:

Piece	File	Role
Host plugin	lib/index.js	apply(ctx) provides the delChat service
Host manifest	lib/typert.host.js	the ./typert Typert contribution that exposes delChat over the gateway
Browser plugin	lib/client.js	the settings.section page, mounted through exports["./client"]
Mount	cordis.patch.yml	one insert row: del-chat → dsh-delete-chat

The browser half reaches the host through remote.delChat.*. The host half imports no @deepseek-ai/* runtime package — it reads the host process's own services with ctx.get(...) and binds itself to the gateway with a hand-written typertRemote binding, so no code-generation step is needed to build this plugin.

Every Typert codec carries both harness spellings of a strict codec — { mode: 'strict', typeSymbol, schema, create: () => schema } — because 0.1.x validates/decodes codec.schema, while 0.2.x validates a create() factory and decodes create().parse(...). One artifact passes either loader.

Exposed Remote methods:

delChat.list()                      → { sessions: [...] }
delChat.archive({ sessionId, stopActivity? })
                                    → { archivedSessionIds, needsStop, activity }
delChat.unarchive({ sessionId })    → { archivedSessionIds }
delChat.inspectDelete({ sessionId })→ { deletable, reason, path, dir, files }
delChat.deleteSession({ sessionId })→ { path, removed, dirRemoved }

Development / 开发

npm install
npm run build     # esbuild → lib/index.js, lib/typert.host.js, lib/client.js
npm test          # builds, then validates both halves + cross-harness compat

npm run build writes the published artifacts:

• lib/index.js — the host plugin, bundled to ESM.
• lib/typert.host.js — copied verbatim from src/typert.host.js.
• lib/client.js — the browser bundle wrapped in the window.__ModuleLoader__.load({ id, factory }) envelope the DSH client module system executes, with react left external for the shell's static module table.

npm test runs three suites:

1. test/validate-host.mjs — imports the built host half against a mock Cordis context and exercises the deletion contract on real files in a temp directory (canonical generation names, coexisting v3/v4 generations, non-canonical leftovers, directory-name guard) plus the archive/unarchive matrix and the title fast path for both cache signatures.
2. test/validate-client.mjs — executes the built browser bundle against a fake window.__ModuleLoader__ and a react shim, asserting the registration id, the exports/inject list, the Remote descriptors, and the settings.section registration.
3. test/validate-compat.mjs — validates the built manifest with the real validateTypertManifest of every installed harness generation it can find (0.1.5 and 0.2.1 locally) and decodes the archive request/result through the schema each line uses. It skips cleanly when no harness is installed; point it at other installs with DSH_HARNESS_DIRS (semicolon-separated ...\node_modules\@deepseek-ai directories).

License

MIT