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README.md

Fuji

Fuji is a local-first CMS where every entry's body is its own CRDT. Write offline, sync later, and collaborate on a single entry without touching the rest of your content. Think of it as a structured journal, knowledge base, or portfolio—whatever you tag and type your entries as.

Part of the Epicenter monorepo. MIT licensed.

How it works

Layout

SvelteKit app (static adapter, SSR disabled) with three panels: a sidebar for filtering by type, tags, and search; a main area that toggles between table and timeline views; and an editor panel for rich-text content.

Data model

Workspace ID: epicenter.fuji. Rich-text content and entry metadata are separate CRDTs. The entries table stays lean—just IDs, titles, tags, timestamps—while each entry's body lives in its own Y.Text document via withDocument. Loading a list of 500 entries doesn't mean loading 500 rich-text trees; the editor and the list never contend for the same document.

  • entries table—id (EntryId), title, subtitle, type (string[]), tags (string[]), createdAt, updatedAt, _v. Each entry carries an attached content document bound to ProseMirror via y-prosemirror.
  • KV keys—selectedEntryId, viewMode ('table' | 'timeline'), sidebarCollapsed.

Client wiring

createWorkspace(fujiWorkspace)
  .withExtension('persistence', indexeddbPersistence)
  .withExtension('sync', createSyncExtension({ url, getToken }))

Encryption keys are applied on login. Local data is cleared on logout.

Editor

ProseMirror with y-prosemirror binds directly to the entry's Y.Text. Edits are conflict-free by default; two sessions editing the same entry merge automatically.

Keyboard shortcuts

  • Cmd+N—new entry
  • Escape—deselect current entry

Development

Prerequisites: Bun.

git clone https://github.com/EpicenterHQ/epicenter.git
cd epicenter
bun install
cd apps/fuji
bun dev

By default this runs against a local dev server on port 5174. To run against the production sync server:

bun run dev:remote

Tech stack

  • SvelteKit—UI framework (static adapter, SSR disabled)
  • ProseMirror + y-prosemirror—collaborative rich-text editing
  • TanStack Svelte Table—entry list table view
  • Yjs—CRDT engine
  • Tailwind CSS—styling
  • @epicenter/workspace—CRDT-backed tables, versioning, documents
  • @epicenter/svelte—auth, workspace gate, reactive table/KV bindings
  • @epicenter/ui—shadcn-svelte component library

License

MIT