diff --git a/apps/web/app/api/openeditor/emoji-data/[locale]/[file]/route.ts b/apps/web/app/api/openeditor/emoji-data/[locale]/[file]/route.ts
index aecf9007..03f10509 100644
--- a/apps/web/app/api/openeditor/emoji-data/[locale]/[file]/route.ts
+++ b/apps/web/app/api/openeditor/emoji-data/[locale]/[file]/route.ts
@@ -1,4 +1,4 @@
-import { createOpenEditorEmojiDataResponse } from "@openeditor/emoji/data";
+import { createOpenEditorEmojiDataResponse } from "@openeditor/document/emoji";
 
 export const dynamic = "force-static";
 
diff --git a/apps/web/app/api/pages/[pageId]/export/page-export.test.ts b/apps/web/app/api/pages/[pageId]/export/page-export.test.ts
index 2adaa2fb..927ae1c9 100644
--- a/apps/web/app/api/pages/[pageId]/export/page-export.test.ts
+++ b/apps/web/app/api/pages/[pageId]/export/page-export.test.ts
@@ -2,7 +2,7 @@ import { describe, expect, test } from "bun:test";
 import {
   createOpenEditorImageAssetResolver,
   exportOpenEditorDocument,
-} from "@openeditor/exporters/export";
+} from "@openeditor/export/export";
 import { projectBaseBlocksDocumentForPortableExport } from "@baseblocks/openeditor-contracts";
 import {
   assertStoredChecksum,
diff --git a/apps/web/app/api/pages/[pageId]/export/route.ts b/apps/web/app/api/pages/[pageId]/export/route.ts
index 744cb141..f2026c65 100644
--- a/apps/web/app/api/pages/[pageId]/export/route.ts
+++ b/apps/web/app/api/pages/[pageId]/export/route.ts
@@ -14,13 +14,13 @@ import {
 import { api } from "@baseblocks/backend";
 import { projectBaseBlocksDocumentForPortableExport } from "@baseblocks/openeditor-contracts";
 import { baseBlocksBlockRegistry } from "@baseblocks/openeditor-contracts/block-registry";
-import { isOpenEditorDocument } from "@openeditor/core";
+import { isOpenEditorDocument } from "@openeditor/document";
 import {
   createOpenEditorImageAssetResolver,
   exportOpenEditorDocument,
   openEditorExportFormats,
-} from "@openeditor/exporters/export";
-import type { ProseMirrorNode } from "@openeditor/core";
+} from "@openeditor/export/export";
+import type { ProseMirrorNode } from "@openeditor/document";
 import { type NextRequest, NextResponse } from "next/server";
 
 export const runtime = "nodejs";
diff --git a/apps/web/features/marketing/openeditor-demo.tsx b/apps/web/features/marketing/openeditor-demo.tsx
index 1532a4da..ae36f911 100644
--- a/apps/web/features/marketing/openeditor-demo.tsx
+++ b/apps/web/features/marketing/openeditor-demo.tsx
@@ -5,7 +5,7 @@ import {
   createDocument,
   textBlock,
   type OpenEditorBlock,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import { OpenEditorContent, useOpenEditorController } from "@openeditor/react";
 import {
   OpenEditorBlockMenu,
diff --git a/apps/web/features/openeditor/attachment-runtime.ts b/apps/web/features/openeditor/attachment-runtime.ts
index 8afca438..b5feb7b9 100644
--- a/apps/web/features/openeditor/attachment-runtime.ts
+++ b/apps/web/features/openeditor/attachment-runtime.ts
@@ -10,7 +10,7 @@ import type {
   OpenEditorAttachmentRuntime,
   OpenEditorAttachmentSnapshot,
   OpenEditorAttachmentUploadInput,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import { useConvex, useMutation } from "convex/react";
 
 const MAX_ATTACHMENT_SIZE = 50 * 1024 * 1024;
diff --git a/apps/web/features/openeditor/custom-block-viewer.tsx b/apps/web/features/openeditor/custom-block-viewer.tsx
index 24e7a866..36ce000f 100644
--- a/apps/web/features/openeditor/custom-block-viewer.tsx
+++ b/apps/web/features/openeditor/custom-block-viewer.tsx
@@ -6,7 +6,7 @@ import type {
   OpenEditorDocument,
   OpenEditorImageRuntime,
   OpenEditorPageRuntime,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import { OpenEditorViewer } from "@openeditor/react/viewer";
 import { libraryViewer } from "./extensions/library";
 import { searchViewer } from "./extensions/search";
diff --git a/apps/web/features/openeditor/custom-blocks.test.ts b/apps/web/features/openeditor/custom-blocks.test.ts
index c44e10c8..8f9dce09 100644
--- a/apps/web/features/openeditor/custom-blocks.test.ts
+++ b/apps/web/features/openeditor/custom-blocks.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test";
-import type { OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorDocument } from "@openeditor/document";
 import {
   BaseBlocksCustomBlockAssetAuthorization,
   extractBaseBlocksCustomBlockAssetIds,
diff --git a/apps/web/features/openeditor/custom-blocks.tsx b/apps/web/features/openeditor/custom-blocks.tsx
index 7cd941a4..1c6a7cc6 100644
--- a/apps/web/features/openeditor/custom-blocks.tsx
+++ b/apps/web/features/openeditor/custom-blocks.tsx
@@ -9,13 +9,13 @@ import {
 } from "@hugeicons/core-free-icons";
 import { OpenEditorContent, useOpenEditorController } from "@openeditor/react";
 import { baseBlocksCustomBlockEditors } from "@baseblocks/custom-blocks/editor";
-import { extractOpenEditorCustomBlockAssetReferences } from "@openeditor/core";
+import { extractOpenEditorCustomBlockAssetReferences } from "@openeditor/document";
 import type {
   OpenEditorAttachmentRuntime,
   OpenEditorDocument,
   OpenEditorImageRuntime,
   OpenEditorPageRuntime,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import { useRef, type ComponentProps } from "react";
 import { libraryEditor } from "./extensions/library";
 import { searchEditor } from "./extensions/search";
diff --git a/apps/web/features/openeditor/image-runtime.ts b/apps/web/features/openeditor/image-runtime.ts
index 0667ac01..a0134f7d 100644
--- a/apps/web/features/openeditor/image-runtime.ts
+++ b/apps/web/features/openeditor/image-runtime.ts
@@ -10,7 +10,7 @@ import type {
   OpenEditorImageRuntime,
   OpenEditorImageSnapshot,
   OpenEditorImageUploadInput,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import { useConvex, useMutation } from "convex/react";
 import { useMemo } from "react";
 
diff --git a/apps/web/features/openeditor/open-editor-document-sync.test.ts b/apps/web/features/openeditor/open-editor-document-sync.test.ts
index 785d51d8..3a3c9ad4 100644
--- a/apps/web/features/openeditor/open-editor-document-sync.test.ts
+++ b/apps/web/features/openeditor/open-editor-document-sync.test.ts
@@ -3,7 +3,7 @@ import {
   createDocument,
   textBlock,
   type OpenEditorDocument,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import {
   areOpenEditorDocumentsEqual,
   shouldSyncOpenEditorDocument,
diff --git a/apps/web/features/openeditor/open-editor-document-sync.ts b/apps/web/features/openeditor/open-editor-document-sync.ts
index ab6be342..802b4456 100644
--- a/apps/web/features/openeditor/open-editor-document-sync.ts
+++ b/apps/web/features/openeditor/open-editor-document-sync.ts
@@ -1,4 +1,4 @@
-import type { OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorDocument } from "@openeditor/document";
 
 function areOpenEditorValuesEqual(left: unknown, right: unknown): boolean {
   if (Object.is(left, right)) return true;
diff --git a/apps/web/features/openeditor/openeditor-page-editor.tsx b/apps/web/features/openeditor/openeditor-page-editor.tsx
index a94f17d8..5098d3a6 100644
--- a/apps/web/features/openeditor/openeditor-page-editor.tsx
+++ b/apps/web/features/openeditor/openeditor-page-editor.tsx
@@ -17,7 +17,7 @@ import type {
   OpenEditorDocument,
   OpenEditorImageRuntime,
   OpenEditorPageRuntime,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import {
   OpenEditorContent,
   OpenEditorPageHeader,
diff --git a/apps/web/features/openeditor/page-tabs-model.test.ts b/apps/web/features/openeditor/page-tabs-model.test.ts
index ae6b4215..c31a0119 100644
--- a/apps/web/features/openeditor/page-tabs-model.test.ts
+++ b/apps/web/features/openeditor/page-tabs-model.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test";
-import { createDocument, textBlock } from "@openeditor/core";
+import { createDocument, textBlock } from "@openeditor/document";
 import { assertBaseBlocksDocument } from "@baseblocks/openeditor-contracts";
 import {
   createOpenEditorPageTabs,
diff --git a/apps/web/features/openeditor/page-tabs-model.ts b/apps/web/features/openeditor/page-tabs-model.ts
index 69a1d234..dfbb8935 100644
--- a/apps/web/features/openeditor/page-tabs-model.ts
+++ b/apps/web/features/openeditor/page-tabs-model.ts
@@ -1,4 +1,4 @@
-import type { OpenEditorBlock, OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorBlock, OpenEditorDocument } from "@openeditor/document";
 
 type OpenEditorTextRange = {
   from: number;
diff --git a/apps/web/features/openeditor/page-tabs.tsx b/apps/web/features/openeditor/page-tabs.tsx
index 41a27e90..16e4e3ab 100644
--- a/apps/web/features/openeditor/page-tabs.tsx
+++ b/apps/web/features/openeditor/page-tabs.tsx
@@ -17,7 +17,7 @@ import {
   type OpenEditorDocument,
   type OpenEditorImageRuntime,
   type OpenEditorPageRuntime,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import {
   OpenEditorContent,
   OpenEditorViewer,
diff --git a/apps/web/features/openeditor/use-open-editor-document-sync.ts b/apps/web/features/openeditor/use-open-editor-document-sync.ts
index f73f0399..938b44b4 100644
--- a/apps/web/features/openeditor/use-open-editor-document-sync.ts
+++ b/apps/web/features/openeditor/use-open-editor-document-sync.ts
@@ -1,6 +1,6 @@
 "use client";
 
-import type { OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorDocument } from "@openeditor/document";
 import type { OpenEditorController } from "@openeditor/react";
 import { useEffect, useRef } from "react";
 import {
diff --git a/apps/web/features/openeditor/use-versioned-page-document.test.tsx b/apps/web/features/openeditor/use-versioned-page-document.test.tsx
index 730aa420..d18ec8d4 100644
--- a/apps/web/features/openeditor/use-versioned-page-document.test.tsx
+++ b/apps/web/features/openeditor/use-versioned-page-document.test.tsx
@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test";
 import type { Id } from "@baseblocks/backend";
-import type { OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorDocument } from "@openeditor/document";
 import { renderToStaticMarkup } from "react-dom/server";
 import { useVersionedPageDocument } from "./use-versioned-page-document";
 
diff --git a/apps/web/features/openeditor/use-versioned-page-document.ts b/apps/web/features/openeditor/use-versioned-page-document.ts
index 49084b4c..cc189093 100644
--- a/apps/web/features/openeditor/use-versioned-page-document.ts
+++ b/apps/web/features/openeditor/use-versioned-page-document.ts
@@ -9,7 +9,7 @@ import {
   reconcileChildPageProjection,
 } from "@baseblocks/openeditor-contracts";
 import type { SaveStatus } from "@baseblocks/domain";
-import type { OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorDocument } from "@openeditor/document";
 import { useCallback, useEffect, useRef, useState } from "react";
 import { areOpenEditorDocumentsEqual } from "./open-editor-document-sync";
 import type { VersionedDocument } from "./versioned-document";
diff --git a/apps/web/features/openeditor/versioned-document.ts b/apps/web/features/openeditor/versioned-document.ts
index 489694d0..802afdad 100644
--- a/apps/web/features/openeditor/versioned-document.ts
+++ b/apps/web/features/openeditor/versioned-document.ts
@@ -1,4 +1,4 @@
-import type { OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorDocument } from "@openeditor/document";
 
 export interface VersionedDocument {
   document: OpenEditorDocument;
diff --git a/apps/web/features/published-sites/image-runtime.ts b/apps/web/features/published-sites/image-runtime.ts
index fa0deb38..c3474a51 100644
--- a/apps/web/features/published-sites/image-runtime.ts
+++ b/apps/web/features/published-sites/image-runtime.ts
@@ -1,4 +1,4 @@
-import type { OpenEditorImageRuntime } from "@openeditor/core";
+import type { OpenEditorImageRuntime } from "@openeditor/document";
 
 export function createPublishedImageRuntime(
   imageIds: readonly string[],
diff --git a/apps/web/features/published-sites/page-content.tsx b/apps/web/features/published-sites/page-content.tsx
index 0971c6fe..8918824d 100644
--- a/apps/web/features/published-sites/page-content.tsx
+++ b/apps/web/features/published-sites/page-content.tsx
@@ -13,7 +13,7 @@ import { Button } from "@baseblocks/ui/button";
 import type {
   OpenEditorDocument,
   OpenEditorPageRuntime,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import { OpenEditorViewer } from "@openeditor/react";
 import { OpenEditorThemeProvider } from "@openeditor/ui";
 import "@openeditor/ui/styles.css";
diff --git a/apps/web/features/published-sites/site-options-menu.tsx b/apps/web/features/published-sites/site-options-menu.tsx
index 671c46bd..1aa92c29 100644
--- a/apps/web/features/published-sites/site-options-menu.tsx
+++ b/apps/web/features/published-sites/site-options-menu.tsx
@@ -21,7 +21,7 @@ import {
   DropdownMenuSubTrigger,
   DropdownMenuTrigger,
 } from "@baseblocks/ui/dropdown-menu";
-import type { OpenEditorExportFormat } from "@openeditor/exporters/export";
+import type { OpenEditorExportFormat } from "@openeditor/export/export";
 import { useLocale, useTranslations } from "next-intl";
 import { useTheme } from "next-themes";
 
diff --git a/apps/web/package.json b/apps/web/package.json
index ea70e3e0..79e97d6b 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -30,13 +30,12 @@
     "@flags-sdk/vercel": "^1.4.6",
     "@hugeicons/core-free-icons": "^4.2.3",
     "@hugeicons/react": "^1.1.9",
-    "@openeditor/core": "0.0.52",
-    "@openeditor/custom-block": "0.0.52",
-    "@openeditor/emoji": "0.0.52",
-    "@openeditor/exporters": "0.0.52",
-    "@openeditor/react": "0.0.52",
-    "@openeditor/ui": "0.0.52",
-    "@openeditor/workspace": "0.0.52",
+    "@openeditor/custom-block": "0.0.53",
+    "@openeditor/document": "0.0.53",
+    "@openeditor/export": "0.0.53",
+    "@openeditor/mutations": "0.0.53",
+    "@openeditor/react": "0.0.53",
+    "@openeditor/ui": "0.0.53",
     "@vercel/analytics": "^2.0.1",
     "@vercel/sdk": "^1.28.8",
     "ai": "7.0.49",
diff --git a/bun.lock b/bun.lock
index e800e9d3..35f61416 100644
--- a/bun.lock
+++ b/bun.lock
@@ -34,13 +34,12 @@
         "@flags-sdk/vercel": "^1.4.6",
         "@hugeicons/core-free-icons": "^4.2.3",
         "@hugeicons/react": "^1.1.9",
-        "@openeditor/core": "0.0.52",
-        "@openeditor/custom-block": "0.0.52",
-        "@openeditor/emoji": "0.0.52",
-        "@openeditor/exporters": "0.0.52",
-        "@openeditor/react": "0.0.52",
-        "@openeditor/ui": "0.0.52",
-        "@openeditor/workspace": "0.0.52",
+        "@openeditor/custom-block": "0.0.53",
+        "@openeditor/document": "0.0.53",
+        "@openeditor/export": "0.0.53",
+        "@openeditor/mutations": "0.0.53",
+        "@openeditor/react": "0.0.53",
+        "@openeditor/ui": "0.0.53",
         "@vercel/analytics": "^2.0.1",
         "@vercel/sdk": "^1.28.8",
         "ai": "7.0.49",
@@ -92,9 +91,9 @@
         "@convex-dev/workpool": "^0.4.9",
         "@firecrawl/anydoc": "0.1.9",
         "@noble/hashes": "2.0.1",
-        "@openeditor/core": "0.0.52",
-        "@openeditor/custom-block": "0.0.52",
-        "@openeditor/workspace": "0.0.52",
+        "@openeditor/custom-block": "0.0.53",
+        "@openeditor/document": "0.0.53",
+        "@openeditor/mutations": "0.0.53",
         "@polar-sh/sdk": "0.49.0",
         "ai": "7.0.49",
         "better-auth": "^1.6.23",
@@ -122,8 +121,8 @@
         "@dnd-kit/react": "^0.5.0",
         "@hugeicons/core-free-icons": "^4.2.3",
         "@hugeicons/react": "^1.1.9",
-        "@openeditor/core": "0.0.52",
-        "@openeditor/custom-block": "0.0.52",
+        "@openeditor/custom-block": "0.0.53",
+        "@openeditor/document": "0.0.53",
         "react": "19.2.7",
       },
       "devDependencies": {
@@ -155,11 +154,8 @@
       "version": "0.0.0",
       "dependencies": {
         "@baseblocks/custom-blocks": "workspace:*",
-        "@baseblocks/domain": "workspace:*",
-        "@openeditor/core": "0.0.52",
-        "@openeditor/embedded-runtime": "0.0.52",
-        "@openeditor/extensions": "0.0.52",
-        "@openeditor/tiptap": "0.0.52",
+        "@openeditor/document": "0.0.53",
+        "@openeditor/engine": "0.0.53",
       },
       "devDependencies": {
         "@baseblocks/tsconfig": "workspace:*",
@@ -672,27 +668,21 @@
 
     "@nodelib/fs.walk": ["@nodelib/fs.walk@1.2.8", "", { "dependencies": { "@nodelib/fs.scandir": "2.1.5", "fastq": "^1.6.0" } }, "sha512-oGB+UxlgWcgQkgwo8GcEGwemoTFt3FIO9ababBmaGwXIoBKZ+GTy0pP185beGg7Llih/NSHSV2XAs1lnznocSg=="],
 
-    "@openeditor/core": ["@openeditor/core@0.0.52", "", {}, "sha512-l/U2KpzwA+M252WvRs5+zq6LPz1JXAn8V/vk5mU2e39PZyn0xWztCni9Caeo59BBVZAxN1EAUtJeTNwOjKtYnA=="],
-
-    "@openeditor/custom-block": ["@openeditor/custom-block@0.0.52", "", { "dependencies": { "@openeditor/core": "0.0.52" }, "peerDependencies": { "@tiptap/core": ">=3.29.2", "@tiptap/react": ">=3.29.2", "react": ">=19" }, "optionalPeers": ["@tiptap/core", "@tiptap/react"] }, "sha512-ku+EtP+vOnCoCKouoRx8pYejvyQb1YLOyj8JfTl31lg25oQ5oRRjlY8bfRrF6u73skp2ooQwGhdAwZDf6hAetA=="],
-
-    "@openeditor/embedded-runtime": ["@openeditor/embedded-runtime@0.0.52", "", { "dependencies": { "@openeditor/core": "0.0.52", "@openeditor/extensions": "0.0.52", "@openeditor/tiptap": "0.0.52", "@tiptap/core": "3.29.2", "@tiptap/extension-image": "3.29.2", "@tiptap/extension-link": "3.29.2", "@tiptap/extension-table": "3.29.2", "@tiptap/extension-task-item": "3.29.2", "@tiptap/extension-task-list": "3.29.2", "@tiptap/extension-text-align": "3.29.2", "@tiptap/extension-underline": "3.29.2", "@tiptap/extension-unique-id": "3.29.2", "@tiptap/pm": "3.29.2", "@tiptap/starter-kit": "3.29.2" } }, "sha512-lYnEYZbsgfT4KbdwepCXOLEpbTkcL6g14O3WGH7ussc7BEx1lA0cRd44Rxx9yTlti6NN8lFEWL6RnYeW+cXmzA=="],
-
-    "@openeditor/emoji": ["@openeditor/emoji@0.0.52", "", { "dependencies": { "@base-ui/react": "^1.6.0", "emojibase-data": "16.0.2", "frimousse": "0.3.0" }, "peerDependencies": { "react": ">=19" } }, "sha512-cwu75ct3syTJPoVruwlhm86BrM42ZDVVR2eMoDkgU6nfNaHaLqHuWJGWm4oTTtvAsGncUU6i6gMWxFB+mP2aIQ=="],
+    "@openeditor/custom-block": ["@openeditor/custom-block@0.0.53", "", { "dependencies": { "@openeditor/document": "0.0.53" }, "peerDependencies": { "@tiptap/core": ">=3.29.2", "@tiptap/react": ">=3.29.2", "react": ">=19" }, "optionalPeers": ["@tiptap/core", "@tiptap/react"] }, "sha512-ofs3bHKzhf5Kv1pIFDR4ehshADl7H6iHnzY/hpP+Duosbex0Fdq7h7w2sgFLBtgfXkZl8+dk8uRWfiyjjhjekw=="],
 
-    "@openeditor/exporters": ["@openeditor/exporters@0.0.52", "", { "dependencies": { "@openeditor/core": "0.0.52", "docx": "^9.7.1", "jszip": "^3.10.1", "parse5": "^7.3.0" } }, "sha512-yKqQSEWg5nPoLDtcv7Hz2/dzmooLquLzzNZ2KAEuInDaduuHjTQ+pE5bezEf9NNI0zaPJlyoqap/FltduWck/A=="],
+    "@openeditor/document": ["@openeditor/document@0.0.53", "", { "dependencies": { "emojibase-data": "16.0.2" } }, "sha512-NKzkmAY941o42gkXU8CeaNRMuvN/ADEXzmxLeMWi9cK5dtrm0LUrGrd0V97dGctiMaZrlKntJjrAifKzjmR/Fg=="],
 
-    "@openeditor/extensions": ["@openeditor/extensions@0.0.52", "", { "dependencies": { "@openeditor/core": "0.0.52" } }, "sha512-XSV4fZ6HdXnUUTXwr27TEZiEdOLE3blo7yQRffWcWs0RZYFPcWBI47zJvN6CVzB3xsAT+MujtLqPdI3kMx9tCw=="],
+    "@openeditor/engine": ["@openeditor/engine@0.0.53", "", { "dependencies": { "@openeditor/document": "0.0.53", "@tiptap/core": "3.29.2", "@tiptap/extension-blockquote": "3.29.2", "@tiptap/extension-bold": "3.29.2", "@tiptap/extension-bullet-list": "3.29.2", "@tiptap/extension-code": "3.29.2", "@tiptap/extension-code-block": "3.29.2", "@tiptap/extension-document": "3.29.2", "@tiptap/extension-dropcursor": "3.29.2", "@tiptap/extension-gapcursor": "3.29.2", "@tiptap/extension-hard-break": "3.29.2", "@tiptap/extension-heading": "3.29.2", "@tiptap/extension-horizontal-rule": "3.29.2", "@tiptap/extension-image": "3.29.2", "@tiptap/extension-italic": "3.29.2", "@tiptap/extension-link": "3.29.2", "@tiptap/extension-list": "3.29.2", "@tiptap/extension-list-item": "3.29.2", "@tiptap/extension-list-keymap": "3.29.2", "@tiptap/extension-ordered-list": "3.29.2", "@tiptap/extension-paragraph": "3.29.2", "@tiptap/extension-strike": "3.29.2", "@tiptap/extension-table": "3.29.2", "@tiptap/extension-task-item": "3.29.2", "@tiptap/extension-task-list": "3.29.2", "@tiptap/extension-text": "3.29.2", "@tiptap/extension-text-align": "3.29.2", "@tiptap/extension-underline": "3.29.2", "@tiptap/extension-unique-id": "3.29.2", "@tiptap/extensions": "3.29.2", "@tiptap/pm": "3.29.2", "@tiptap/starter-kit": "3.29.2" } }, "sha512-DT5Kc2sT8KXu5oBdAm18LbRYVb2Q1G0k+afjK+S6WrbV1L3cIpUCAwAmz8x7Tpkw40OmFIyxjv9iLZzRMHk0Dg=="],
 
-    "@openeditor/icons": ["@openeditor/icons@0.0.52", "", { "dependencies": { "@hugeicons/core-free-icons": "^4.2.3" } }, "sha512-DtY9x3wW7MGYEjEAGOQfgfxrB6FpeccXIX4tsSd7Uts+IG1DSFTX2uuzZXRg4krGkQgCRTNQIXPVAMS9S2V6Zg=="],
+    "@openeditor/export": ["@openeditor/export@0.0.53", "", { "dependencies": { "@openeditor/document": "0.0.53", "docx": "^9.7.1", "jszip": "^3.10.1", "parse5": "^7.3.0" } }, "sha512-BGbdX/SRNxZC/ADcBRNkiDIWCKs8d9M17Ib1JlQwJldq+Q/dT1FX7DFjB9fq5TzKwE67SQC4VePOSxt5WxT22g=="],
 
-    "@openeditor/react": ["@openeditor/react@0.0.52", "", { "dependencies": { "@floating-ui/dom": "^1.7.4", "@hugeicons/react": "^1.1.9", "@openeditor/core": "0.0.52", "@openeditor/custom-block": "0.0.52", "@openeditor/embedded-runtime": "0.0.52", "@openeditor/emoji": "0.0.52", "@openeditor/exporters": "0.0.52", "@openeditor/extensions": "0.0.52", "@openeditor/icons": "0.0.52", "@openeditor/tiptap": "0.0.52", "@tiptap/core": "3.29.2", "@tiptap/extension-link": "3.29.2", "@tiptap/extension-placeholder": "3.29.2", "@tiptap/extension-table": "3.29.2", "@tiptap/extension-task-item": "3.29.2", "@tiptap/extension-task-list": "3.29.2", "@tiptap/extension-underline": "3.29.2", "@tiptap/pm": "3.29.2", "@tiptap/react": "3.29.2", "@tiptap/starter-kit": "3.29.2", "@tiptap/suggestion": "3.29.2", "beautiful-mermaid": "1.1.3", "use-sync-external-store": "1.6.0" }, "peerDependencies": { "react": ">=19", "react-dom": ">=19" } }, "sha512-Kfj5o4M/BnawRDu2mbQPIgjdXSzDvxkKsdlBn/CQ1sPXyuK1Zghj6R4M7Yy1YHDf8PzknPAKmb4v2GjaHRNXbA=="],
+    "@openeditor/icons": ["@openeditor/icons@0.0.53", "", { "dependencies": { "@hugeicons/core-free-icons": "^4.2.3" } }, "sha512-beMpUIz/kkrx0prRY22rW7hyqDby4EXJ8ljcZcGy2vvIzKixVydSJI8yZf++hrL/zU9wOp/c6BLzjv3XgmwFHQ=="],
 
-    "@openeditor/tiptap": ["@openeditor/tiptap@0.0.52", "", { "dependencies": { "@openeditor/core": "0.0.52", "@tiptap/core": "3.29.2", "@tiptap/pm": "3.29.2" } }, "sha512-GnIhVXQUWm4lrqtGuTbKVK8mwHLWQ9aF6z9Dh7LN1asmB4xIwcxpFwE0Y6M1M73odAJOyg+9T/Ogzikkab1VBw=="],
+    "@openeditor/mutations": ["@openeditor/mutations@0.0.53", "", { "dependencies": { "@openeditor/document": "0.0.53" } }, "sha512-XRJjVJCAPCJc51FbclLo7CSnE5L8IaZpr6mI4ldo/WF/x72gvwBqRaJlRwMarLg92CJOFCB13bTsOZVNdI20lQ=="],
 
-    "@openeditor/ui": ["@openeditor/ui@0.0.52", "", { "dependencies": { "@base-ui/react": "^1.6.0", "@hugeicons/react": "^1.1.9", "@openeditor/emoji": "0.0.52", "@openeditor/icons": "0.0.52", "@openeditor/react": "0.0.52" }, "peerDependencies": { "react": ">=19", "react-dom": ">=19" } }, "sha512-5yquv3ixfMgz7DA1zoIYQOoCbAU9sDgoYK0JMqDUmX4r1kYgppNEGSvN8QX5IFMF5euTlhZqyEfip07ZZlzMYQ=="],
+    "@openeditor/react": ["@openeditor/react@0.0.53", "", { "dependencies": { "@floating-ui/dom": "^1.7.4", "@hugeicons/react": "^1.1.9", "@openeditor/custom-block": "0.0.53", "@openeditor/document": "0.0.53", "@openeditor/engine": "0.0.53", "@openeditor/export": "0.0.53", "@openeditor/icons": "0.0.53", "@tiptap/core": "3.29.2", "@tiptap/extension-link": "3.29.2", "@tiptap/extension-placeholder": "3.29.2", "@tiptap/extension-table": "3.29.2", "@tiptap/extension-task-item": "3.29.2", "@tiptap/extension-task-list": "3.29.2", "@tiptap/extension-underline": "3.29.2", "@tiptap/pm": "3.29.2", "@tiptap/react": "3.29.2", "@tiptap/suggestion": "3.29.2", "beautiful-mermaid": "1.1.3", "use-sync-external-store": "1.6.0" }, "peerDependencies": { "react": ">=19", "react-dom": ">=19" } }, "sha512-VrrQHAizwV6RFqRDfZzGoEjMRRbjOEdZgE93cjGW7RTZK1GDQeDEyAwzfe4oTnBCPdQZB6XRBddjgBAIRZqOow=="],
 
-    "@openeditor/workspace": ["@openeditor/workspace@0.0.52", "", { "dependencies": { "@openeditor/core": "0.0.52" } }, "sha512-8QaBhGQSLIe+ZkyYVCJEHtCvPrKXCqK2FAsNwO8LU7hMx6bKL5VFN4EWtq+FXPzHVzHZkPizBFYc0vwdI6DVRg=="],
+    "@openeditor/ui": ["@openeditor/ui@0.0.53", "", { "dependencies": { "@base-ui/react": "^1.6.0", "@hugeicons/react": "^1.1.9", "@openeditor/document": "0.0.53", "@openeditor/icons": "0.0.53", "@openeditor/react": "0.0.53", "frimousse": "0.3.0" }, "peerDependencies": { "react": ">=19", "react-dom": ">=19" } }, "sha512-430T5bpXcaPivih8viiDsiJjgJ5G+XuD12eU2+x0qfxQSAqL6NT+vSAitllCdSoqpV8a+dwG9BtTJ5dJ/l+M6Q=="],
 
     "@opentelemetry/api": ["@opentelemetry/api@1.9.1", "", {}, "sha512-gLyJlPHPZYdAk1JENA9LeHejZe1Ti77/pTeFm/nMXmQH/HFZlcS/O2XJB+L8fkbrNSqhdtlvjBVjxwUYanNH5Q=="],
 
diff --git a/bunfig.toml b/bunfig.toml
index 27582102..6da7343b 100644
--- a/bunfig.toml
+++ b/bunfig.toml
@@ -18,16 +18,13 @@ minimumReleaseAgeExcludes = [
   "@firecrawl/anydoc-linux-x64-musl",
   "@firecrawl/anydoc-wasm",
   "@firecrawl/anydoc-win32-x64-msvc",
-  "@openeditor/core",
   "@openeditor/custom-block",
-  "@openeditor/workspace",
-  "@openeditor/embedded-runtime",
-  "@openeditor/emoji",
-  "@openeditor/exporters",
-  "@openeditor/extensions",
+  "@openeditor/document",
+  "@openeditor/engine",
+  "@openeditor/export",
   "@openeditor/icons",
+  "@openeditor/mutations",
   "@openeditor/react",
-  "@openeditor/tiptap",
   "@openeditor/ui",
   "@ai-sdk/*",
   "@ai-sdk/gateway",
diff --git a/packages/backend/convex/aiWorkspaces.ts b/packages/backend/convex/aiWorkspaces.ts
index b2efc88a..b5d6ff4f 100644
--- a/packages/backend/convex/aiWorkspaces.ts
+++ b/packages/backend/convex/aiWorkspaces.ts
@@ -1,6 +1,6 @@
 import { v } from "convex/values";
-import { fingerprintSnapshotPage, type Snapshot } from "@openeditor/workspace";
-import type { JsonObject } from "@openeditor/core";
+import { fingerprintSnapshotPage, type Snapshot } from "@openeditor/mutations";
+import type { JsonObject } from "@openeditor/document";
 import { query } from "./_generated/server";
 import {
   MAX_AI_SITE_PAGES,
diff --git a/packages/backend/convex/fileExtractionQueue.test.ts b/packages/backend/convex/fileExtractionQueue.test.ts
index 72c20150..2cc92e46 100644
--- a/packages/backend/convex/fileExtractionQueue.test.ts
+++ b/packages/backend/convex/fileExtractionQueue.test.ts
@@ -50,8 +50,7 @@ describe("Convex ingestion failure codec", () => {
     expect(decodeConvexIngestionFailure("plain error text")).toBeUndefined();
     expect(decodeConvexIngestionFailure(undefined)).toBeUndefined();
     expect(decodeConvexIngestionFailure({ kind: "canceled" })).toBeUndefined();
-    const forged =
-      "ANYDOC_FAILURE_V1:" + encodeURIComponent(JSON.stringify({ version: 9 }));
+    const forged = `ANYDOC_FAILURE_V1:${encodeURIComponent(JSON.stringify({ version: 9 }))}`;
     expect(decodeConvexIngestionFailure(forged)).toBeUndefined();
     expect(
       decodeConvexIngestionFailure("ANYDOC_FAILURE_V1:%7Bnot-json"),
diff --git a/packages/backend/convex/model/aiWorkspaceFingerprint.test.ts b/packages/backend/convex/model/aiWorkspaceFingerprint.test.ts
index 0d4c3165..a2980eeb 100644
--- a/packages/backend/convex/model/aiWorkspaceFingerprint.test.ts
+++ b/packages/backend/convex/model/aiWorkspaceFingerprint.test.ts
@@ -4,7 +4,7 @@ import {
   fingerprintSnapshotManifest,
   fingerprintSnapshotPage,
   type Snapshot,
-} from "@openeditor/workspace";
+} from "@openeditor/mutations";
 import { assertAiWorkspaceFingerprints } from "./aiWorkspaceFingerprint";
 
 const document = { type: "doc" as const, version: 1 as const, content: [] };
diff --git a/packages/backend/convex/model/aiWorkspaceFingerprint.ts b/packages/backend/convex/model/aiWorkspaceFingerprint.ts
index 32788951..378a71a5 100644
--- a/packages/backend/convex/model/aiWorkspaceFingerprint.ts
+++ b/packages/backend/convex/model/aiWorkspaceFingerprint.ts
@@ -3,7 +3,7 @@ import {
   fingerprintSnapshotManifest,
   fingerprintSnapshotPage,
   type Snapshot,
-} from "@openeditor/workspace";
+} from "@openeditor/mutations";
 import { AiWorkspaceValidationError } from "./aiWorkspaceBounds";
 
 export type AiPageFingerprintPrecondition = {
diff --git a/packages/backend/convex/pageContentFormat.test.ts b/packages/backend/convex/pageContentFormat.test.ts
index 5844b466..3750c7b6 100644
--- a/packages/backend/convex/pageContentFormat.test.ts
+++ b/packages/backend/convex/pageContentFormat.test.ts
@@ -10,7 +10,7 @@ import {
   synchronizeOpenEditorChildPages,
 } from "./pageContentFormat";
 
-import { fingerprintOpenEditorDocument } from "@openeditor/core";
+import { fingerprintOpenEditorDocument } from "@openeditor/document";
 
 describe("hashOpenEditorContent", () => {
   test("writes a versioned SHA-256 digest", () => {
diff --git a/packages/backend/convex/pageContentFormat.ts b/packages/backend/convex/pageContentFormat.ts
index 30436472..015bae2f 100644
--- a/packages/backend/convex/pageContentFormat.ts
+++ b/packages/backend/convex/pageContentFormat.ts
@@ -2,7 +2,7 @@ import {
   parseOpenEditorDocument as parseOpenEditorDocumentStrict,
   type OpenEditorDocument,
   type ProseMirrorNode,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import {
   assertBaseBlocksDocument,
   baseBlocksDocumentContract,
@@ -14,7 +14,7 @@ import { baseBlocksBlockRegistry } from "@baseblocks/openeditor-contracts/block-
 import { sha256 } from "@noble/hashes/sha2.js";
 import { bytesToHex, utf8ToBytes } from "@noble/hashes/utils.js";
 
-export type { OpenEditorDocument } from "@openeditor/core";
+export type { OpenEditorDocument } from "@openeditor/document";
 
 export type OpenEditorNode = ProseMirrorNode;
 
diff --git a/packages/backend/package.json b/packages/backend/package.json
index fbc806a6..e8c0d482 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -43,9 +43,9 @@
     "@convex-dev/workpool": "^0.4.9",
     "@firecrawl/anydoc": "0.1.9",
     "@noble/hashes": "2.0.1",
-    "@openeditor/core": "0.0.52",
-    "@openeditor/custom-block": "0.0.52",
-    "@openeditor/workspace": "0.0.52",
+    "@openeditor/custom-block": "0.0.53",
+    "@openeditor/document": "0.0.53",
+    "@openeditor/mutations": "0.0.53",
     "@polar-sh/sdk": "0.49.0",
     "ai": "7.0.49",
     "better-auth": "^1.6.23",
diff --git a/packages/custom-blocks/package.json b/packages/custom-blocks/package.json
index bbff2463..5b4fde75 100644
--- a/packages/custom-blocks/package.json
+++ b/packages/custom-blocks/package.json
@@ -23,8 +23,8 @@
     "@dnd-kit/react": "^0.5.0",
     "@hugeicons/core-free-icons": "^4.2.3",
     "@hugeicons/react": "^1.1.9",
-    "@openeditor/custom-block": "0.0.52",
-    "@openeditor/core": "0.0.52",
+    "@openeditor/custom-block": "0.0.53",
+    "@openeditor/document": "0.0.53",
     "react": "19.2.7"
   },
   "devDependencies": {
diff --git a/packages/custom-blocks/src/decision-tree-editor.tsx b/packages/custom-blocks/src/decision-tree-editor.tsx
index 8aa0544b..4dbab105 100644
--- a/packages/custom-blocks/src/decision-tree-editor.tsx
+++ b/packages/custom-blocks/src/decision-tree-editor.tsx
@@ -46,7 +46,7 @@ import {
   getDocumentText,
   textBlock,
   type OpenEditorDocument,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import { Fragment, type RefObject, useMemo, useRef, useState } from "react";
 import {
   addDecisionNode,
diff --git a/packages/custom-blocks/src/decision-tree.test.ts b/packages/custom-blocks/src/decision-tree.test.ts
index 1077e25e..85dd506c 100644
--- a/packages/custom-blocks/src/decision-tree.test.ts
+++ b/packages/custom-blocks/src/decision-tree.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test";
-import type { OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorDocument } from "@openeditor/document";
 import {
   addDecisionNode,
   addDecisionTree,
diff --git a/packages/custom-blocks/src/decision-tree.ts b/packages/custom-blocks/src/decision-tree.ts
index e383ab3f..87709dfb 100644
--- a/packages/custom-blocks/src/decision-tree.ts
+++ b/packages/custom-blocks/src/decision-tree.ts
@@ -1,4 +1,7 @@
-import { validateDocument, type OpenEditorDocument } from "@openeditor/core";
+import {
+  validateDocument,
+  type OpenEditorDocument,
+} from "@openeditor/document";
 
 export type DecisionNode = {
   id: string;
diff --git a/packages/custom-blocks/src/index.ts b/packages/custom-blocks/src/index.ts
index f9ce1a67..4aefa628 100644
--- a/packages/custom-blocks/src/index.ts
+++ b/packages/custom-blocks/src/index.ts
@@ -1,7 +1,7 @@
 import {
   defineOpenEditorCustomBlock,
   type OpenEditorCustomBlockSafeHtml,
-} from "@openeditor/core";
+} from "@openeditor/document";
 import {
   createDirectoryContent,
   directoryToText,
diff --git a/packages/custom-blocks/src/viewer.tsx b/packages/custom-blocks/src/viewer.tsx
index 240479e8..fc288be1 100644
--- a/packages/custom-blocks/src/viewer.tsx
+++ b/packages/custom-blocks/src/viewer.tsx
@@ -3,7 +3,7 @@
 /* oxlint-disable react-doctor/nextjs-no-img-element -- Managed assets are host-resolved private or blob URLs. This framework-neutral package must not depend on the Next.js image pipeline. */
 
 import { defineOpenEditorCustomBlockViewer } from "@openeditor/custom-block/viewer";
-import { getDocumentText } from "@openeditor/core";
+import { getDocumentText } from "@openeditor/document";
 import {
   ArrowLeft01Icon,
   ArrowRight01Icon,
diff --git a/packages/openeditor-contracts/package.json b/packages/openeditor-contracts/package.json
index 167fe6b5..8b3a176c 100644
--- a/packages/openeditor-contracts/package.json
+++ b/packages/openeditor-contracts/package.json
@@ -17,11 +17,8 @@
   },
   "dependencies": {
     "@baseblocks/custom-blocks": "workspace:*",
-    "@baseblocks/domain": "workspace:*",
-    "@openeditor/core": "0.0.52",
-    "@openeditor/embedded-runtime": "0.0.52",
-    "@openeditor/extensions": "0.0.52",
-    "@openeditor/tiptap": "0.0.52"
+    "@openeditor/document": "0.0.53",
+    "@openeditor/engine": "0.0.53"
   },
   "devDependencies": {
     "@baseblocks/tsconfig": "workspace:*",
diff --git a/packages/openeditor-contracts/src/block-registry.ts b/packages/openeditor-contracts/src/block-registry.ts
index eb5c2d13..c01abde0 100644
--- a/packages/openeditor-contracts/src/block-registry.ts
+++ b/packages/openeditor-contracts/src/block-registry.ts
@@ -1,5 +1,5 @@
 import { baseBlocksCustomBlocks } from "@baseblocks/custom-blocks";
-import { createOpenEditorCustomBlockRegistry } from "@openeditor/core";
+import { createOpenEditorCustomBlockRegistry } from "@openeditor/document";
 import { baseBlocksProductBlocks } from "./core-blocks";
 
 /** The one authoritative block set for every BaseBlocks runtime. */
diff --git a/packages/openeditor-contracts/src/core-blocks.ts b/packages/openeditor-contracts/src/core-blocks.ts
index 93da7493..022854e9 100644
--- a/packages/openeditor-contracts/src/core-blocks.ts
+++ b/packages/openeditor-contracts/src/core-blocks.ts
@@ -1,4 +1,4 @@
-import { defineOpenEditorCustomBlock } from "@openeditor/core";
+import { defineOpenEditorCustomBlock } from "@openeditor/document";
 
 export type SearchBlockData = {
   placeholder: string;
diff --git a/packages/openeditor-contracts/src/index.test.ts b/packages/openeditor-contracts/src/index.test.ts
index 0a74a363..6fb55cca 100644
--- a/packages/openeditor-contracts/src/index.test.ts
+++ b/packages/openeditor-contracts/src/index.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test";
-import { createOpenEditorCustomBlockNode } from "@openeditor/core";
+import { createOpenEditorCustomBlockNode } from "@openeditor/document";
 import { baseBlocksBlockRegistry } from "./block-registry";
 import {
   assertBaseBlocksDocument,
diff --git a/packages/openeditor-contracts/src/index.ts b/packages/openeditor-contracts/src/index.ts
index 4b88bb58..dde77300 100644
--- a/packages/openeditor-contracts/src/index.ts
+++ b/packages/openeditor-contracts/src/index.ts
@@ -5,14 +5,14 @@ import {
   type BlockSpec,
   type OpenEditorValueSchema,
   type ProseMirrorNode,
-} from "@openeditor/core";
-import { validateOpenEditorEngineDocument } from "@openeditor/embedded-runtime";
+} from "@openeditor/document";
+import { validateOpenEditorEngineDocument } from "@openeditor/engine";
 import {
   defaultBlockSpecs,
   defaultDocumentContract,
   defaultMarkContractSpecs,
   defaultNodeSpecs,
-} from "@openeditor/extensions";
+} from "@openeditor/document";
 
 export * from "./page-projection";
 export * from "./portable-export";
diff --git a/packages/openeditor-contracts/src/page-projection.test.ts b/packages/openeditor-contracts/src/page-projection.test.ts
index e64fd98d..d8ee2628 100644
--- a/packages/openeditor-contracts/src/page-projection.test.ts
+++ b/packages/openeditor-contracts/src/page-projection.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test";
-import type { OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorDocument } from "@openeditor/document";
 import {
   hasSameChildPageProjection,
   hasSameNonPageContent,
diff --git a/packages/openeditor-contracts/src/page-projection.ts b/packages/openeditor-contracts/src/page-projection.ts
index 09682626..3ba9a2a1 100644
--- a/packages/openeditor-contracts/src/page-projection.ts
+++ b/packages/openeditor-contracts/src/page-projection.ts
@@ -1,4 +1,4 @@
-import type { OpenEditorDocument, ProseMirrorNode } from "@openeditor/core";
+import type { OpenEditorDocument, ProseMirrorNode } from "@openeditor/document";
 
 export type ChildPageProjection = {
   pageId: string;
diff --git a/packages/openeditor-contracts/src/portable-export.test.ts b/packages/openeditor-contracts/src/portable-export.test.ts
index 7c30c156..eaf290b2 100644
--- a/packages/openeditor-contracts/src/portable-export.test.ts
+++ b/packages/openeditor-contracts/src/portable-export.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test";
-import type { OpenEditorDocument } from "@openeditor/core";
+import type { OpenEditorDocument } from "@openeditor/document";
 import { projectBaseBlocksDocumentForPortableExport } from "./portable-export";
 
 describe("portable BaseBlocks export", () => {
diff --git a/packages/openeditor-contracts/src/portable-export.ts b/packages/openeditor-contracts/src/portable-export.ts
index c2aa32b2..980a4cf7 100644
--- a/packages/openeditor-contracts/src/portable-export.ts
+++ b/packages/openeditor-contracts/src/portable-export.ts
@@ -1,4 +1,4 @@
-import type { OpenEditorDocument, ProseMirrorNode } from "@openeditor/core";
+import type { OpenEditorDocument, ProseMirrorNode } from "@openeditor/document";
 import { baseBlocksBlockRegistry } from "./block-registry";
 
 type PageTab = {