dsh-knowledge-canvas

dsh-knowledge-canvas

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A knowledge base for DeepSeek Harness that the model retrieves from by judgement, not by similarity — and that you edit on a canvas in the sidebar.

The problem

You explain something, and the next conversation still does not know it — or worse, it thinks it does, and the note is stale.

This is not a context-window problem. Measured in one workspace:

$ node report-kb-use.mjs
50 tool call(s) in the log, 1 session(s)
  写 13 次（ops / …）
  读 1 次（read-animation）
  ⚠ 先写后读：第一次写入之前没有读过

13 writes, 1 read — and that read was from a different base. Knowledge was recorded and never used. Recording is free: the model does it in passing. Using is the hard part: you have to know the entry exists, and which one still holds.

What makes this different

Every node ends with a line beginning 「什么时候该想起它：」 — "when should this come to mind". That line is what the outline shows, so the model matches a situation rather than an embedding. When it picks wrong, you see the wrong node on the canvas and fix the sentence that misled it.

On the panel

Where	What
Top row	search, read counters, refresh
One row per base	title, read progress, one switch (does this conversation read it), ⋯ menu (rename, delete, colour, export)
Canvas toolbar	zoom, fit, width (the whole base's default width, not one node), shape, colour, layout
「定位到…」 at the bottom	type an id to jump to that node

Gesture	Result
click a node	opens the editor; click again to close
Enter / Space (focused)	same, from the keyboard
Shift+Enter	start a link; Enter on the target finishes it
drag a node	moves it; the drop is written to layout.json
hold ~0.26 s then drag	draws a link (orange), not a re-parent
right-drag from a node	same link
Alt + drag a node	makes the target its parent (grey line)
right-click a node	menu: new child / change history
right-click empty canvas	menu: new top-level node
drag a node out to the input box	hands that node to the conversation
the three handles	width, height, both

Node size means three things in order: this node → the base's default → the canvas zoom. The toolbar's 「宽度」 is the second one.

Four layouts: layers, radial, staircase, compact. Switching only recomputes the default placement.

Install

npm install dsh-knowledge-canvas

Restart DSH once after installing; the 「知识库」 panel appears in the sidebar. Panel-side changes need only a page reload; host-side changes (index.js, lib/*) need a restart — that distinction decides what you do after editing.

The first time you open a workspace, a base called 「怎么用这个知识库」 is seeded with everything the panel can do. It upgrades with each release, and nodes you edited are never overwritten.

Tools the model gets (eight)

Tool	What it does
knowledge_read	read a base or a node; without base, list the bases
knowledge_create_base	create a base with a root node. Usable immediately — no knowledge_select needed
knowledge_write_node	write or edit a node. The return carries the id it just created, ready to use as parent
knowledge_link	connect two nodes, and say in one line why they are related
knowledge_remove_node	mark a node removed (recoverable, not deleted)
knowledge_unlink	remove an association; the nodes stay, the dashed line goes
knowledge_select	switch a base on or off for this conversation
knowledge_remove_base	mark a base removed (recoverable; the file is not deleted)
knowledge_show_images	Hands a node's pictures to the model as images

Settings, per workspace

Settings → 知识库, one block per workspace: the workspace's path, a 记录调用过程 switch (off by default; when on, every tool call is logged and the panel shows 「正在检索 n3（…）」), and per-base index/full switches.

The workspace list is the directories in the session list ∪ the directories on disk that have .dsh-knowledge/ — the second set is recovered from $DSH_HOME/sessions/, where each session has a directory named after its workspace path with separators turned into -.

Diary mode (optional)

For people who do not want to organise notes — they want something to remember. A switch at the top of the panel, per conversation.

With it on, that conversation writes an entry of its own when a stretch of talk reaches a place worth keeping. Not daily. Not in other conversations.

• One per conversation: diary-.json. The switch is per conversation and so is the data — another conversation in the same workspace neither sees it nor can read it.
• Stored sealed (AES-256-GCM). A model that cats the file gets base64.
• The prompt gives conventions, not a voice. The persona is yours; the plugin does not write letters on your behalf.

What it will not do

• It is not a chat log. Nothing is captured automatically; only what you or the model explicitly write.
• It does not sync anywhere. Everything is under /.dsh-knowledge/, plain JSON: open it in Notepad, commit it, copy the folder. No account, no server.
• The diary's sealing stops accidents, not readers. The key is derived from the base name, so anyone who reads this source can decrypt. Stopping a model that goes looking needs a key that never touches the disk — a password or an OS credential — which is a different design.
• It does not write a persona. Diary mode injects writing conventions, not a tone.
• No full-text search. The box does substring matching over titles and bodies; no index, no embeddings.

Where the files are

/.dsh-knowledge/
├── .json        one file per base: nodes, links, seed fingerprint
├── selection.json        which bases this workspace reads, how they are injected, call logging
├── layout.json           positions, widths, shapes, colours
├── .sessions/.json   this conversation's own switches (including the diary)
└── activity.log          tool-call records, only while call logging is on

• Host (index.js, lib/*): injection, tools, routes, the seeded tutorial, the diary conventions.
• Panel (client.js): canvas, gestures, editor, settings. It reads those JSON files directly, not through the host — so when the panel "cannot see a base", check what it read, not what the host answered.
• The outline is assembled before every model call and holds titles, summaries and trigger lines; bodies need an explicit knowledge_read.

For contributors

• npm run check:all runs four things: identifiers, sprite aspect ratios, a public-tree check (no local paths, addresses or private ids), and its assertions over store/routes/tools (the count is what the run prints).
• Change a gesture, change the tutorial line that describes it (lib/seed.js, the table at the top), or the tutorial describes something that does not exist.
• The tutorial is recognised by content (whichever base shares most of the seed's node ids), not by file name — that rule came from three workspaces keeping it under three different names.

Development

npm run check:all     # identifiers + sprites + public tree + assertions
npm test              # assertions only

Publishing needs a real terminal (2FA needs a TTY), and after publishing the version stays Validating until npm's automated review finishes:

cd 
npm publish --registry https://registry.npmjs.org

While it is Validating, registry.npmjs.org/.../.tgz returns 404 — that is not a failed publish.

License

MIT