fix(#342 review round-2 F5-F6): drop the posthog re-render remount + test chunk detector

- F5 [stability/regression]: the round-1 F2 fix re-rendered the root with
  <PostHogProvider><App/></PostHogProvider> after the analytics chunk loaded. In
  the ChunkLoadErrorBoundary child slot the element TYPE changes App ->
  PostHogProvider, so React does NOT reconcile in place — it REMOUNTS the whole
  App: every mount effect runs twice (websocket connect/disconnect, origin
  tracking, subscriptions) and local state / focus / scroll / in-progress input is
  lost on cloud cold-load (e.g. typing in /login before analytics loads). And it
  was USELESS: the app has ZERO consumers of the PostHog React context (no
  usePostHog / useFeatureFlag* / PostHogFeature), and PostHogProvider given an
  initialized client is a no-op — all capture goes through the posthog singleton.
  Fix: initAnalytics now inits the posthog SINGLETON only (no posthog-js/react
  import, no second render); renderApp() renders <App/> once. First paint stays
  instant, cloud analytics behavior unchanged, no remount.
- F6 [test]: exported isChunkLoadError + chunk-load-error-boundary.test.ts —
  pins the detector (ChunkLoadError name + the 3 dynamic-import failure messages,
  case-insensitive → true; null/undefined/ordinary errors → false) so a
  false-negative that re-blanks the app on a real chunk-404 is caught.

Gate: client tsc 0, chunk-load + sanitize tests 14 passed. Entry chunk unchanged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -12,14 +12,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- **Save intentional page versions.** Press `Cmd/Ctrl+S` (or use the page menu)
-  to save a named version of a page. The history panel now distinguishes
-  intentional versions (a "Saved" / "Agent version" badge) from automatic
-  snapshots, dims autosaves, and offers an "Only versions" filter. Automatic
-  snapshots switched from a fixed interval to a trailing idle-flush with a
-  max-wait ceiling, and a boundary snapshot is pinned whenever the editing source
-  changes (e.g. a person's edits followed by the AI agent). (#370)
-
 - **Place several images side by side in a row.** A new "Inline (side by
   side)" alignment mode in the image bubble menu renders consecutive inline
   images as a row that wraps onto the next line on narrow screens. The row is

apps/client/package.json

@@ -13,6 +13,7 @@
   },
   "dependencies": {
     "@ai-sdk/react": "^3.0.208",
+    "@braintree/sanitize-url": "7.1.2",
     "@atlaskit/pragmatic-drag-and-drop": "1.8.1",
     "@atlaskit/pragmatic-drag-and-drop-auto-scroll": "2.1.5",
     "@atlaskit/pragmatic-drag-and-drop-flourish": "2.0.15",

apps/client/public/locales/en-US/translation.json

@@ -1418,14 +1418,5 @@
   "The commented text changed since this suggestion was made; it was not applied.": "The commented text changed since this suggestion was made; it was not applied.",
   "Dismiss": "Dismiss",
   "Suggestion dismissed": "Suggestion dismissed",
-  "Failed to dismiss suggestion": "Failed to dismiss suggestion",
-  "Save version": "Save version",
-  "Ctrl+S": "Ctrl+S",
-  "Version saved": "Version saved",
-  "Already saved as the latest version": "Already saved as the latest version",
-  "Agent version": "Agent version",
-  "Boundary": "Boundary",
-  "Autosave": "Autosave",
-  "Only versions": "Only versions",
-  "No saved versions yet.": "No saved versions yet."
+  "Failed to dismiss suggestion": "Failed to dismiss suggestion"
 }

apps/client/public/locales/ru-RU/translation.json

@@ -1281,14 +1281,5 @@
   "The commented text changed since this suggestion was made; it was not applied.": "Прокомментированный текст изменился после создания предложения; оно не было применено.",
   "Dismiss": "Не применять",
   "Suggestion dismissed": "Предложение отклонено",
-  "Failed to dismiss suggestion": "Не удалось отклонить предложение",
-  "Save version": "Сохранить версию",
-  "Ctrl+S": "Ctrl+S",
-  "Version saved": "Версия сохранена",
-  "Already saved as the latest version": "Уже сохранено как последняя версия",
-  "Agent version": "Версия агента",
-  "Boundary": "Граница",
-  "Autosave": "Автосейв",
-  "Only versions": "Только версии",
-  "No saved versions yet.": "Пока нет сохранённых версий."
+  "Failed to dismiss suggestion": "Не удалось отклонить предложение"
 }

apps/client/src/App.tsx

@@ -1,38 +1,72 @@
+import { lazy, Suspense } from "react";
 import { Navigate, Route, Routes } from "react-router-dom";
+import { Center, Loader } from "@mantine/core";
+import { Error404 } from "@/components/ui/error-404.tsx";
+import Layout from "@/components/layouts/global/layout.tsx";
+import { useTrackOrigin } from "@/hooks/use-track-origin";
+
+// ShareLayout is route-split: its ShareShell chrome pulls in the table of
+// contents (and thus TipTap), so keeping it out of the eager graph removes the
+// editor engine from startup for authenticated users too.
+const ShareLayout = lazy(
+  () => import("@/features/share/components/share-layout.tsx"),
+);
+
+// Auth / entry pages stay eager: they are the first paint for an unauthenticated
+// visitor (e.g. /login) and are already small, so code-splitting them would only
+// add a cold-chunk round trip to the most common cold-start path.
 import SetupWorkspace from "@/pages/auth/setup-workspace.tsx";
 import LoginPage from "@/pages/auth/login";
-import Home from "@/pages/dashboard/home";
-import Page from "@/pages/page/page";
-import AccountSettings from "@/pages/settings/account/account-settings";
-import WorkspaceMembers from "@/pages/settings/workspace/workspace-members";
-import WorkspaceSettings from "@/pages/settings/workspace/workspace-settings";
-import AiSettings from "@/pages/settings/workspace/ai-settings";
-import Groups from "@/pages/settings/group/groups";
-import GroupInfo from "./pages/settings/group/group-info";
-import Spaces from "@/pages/settings/space/spaces.tsx";
-import { Error404 } from "@/components/ui/error-404.tsx";
-import AccountPreferences from "@/pages/settings/account/account-preferences.tsx";
-import SpaceHome from "@/pages/space/space-home.tsx";
-import PageRedirect from "@/pages/page/page-redirect.tsx";
-import Layout from "@/components/layouts/global/layout.tsx";
 import InviteSignup from "@/pages/auth/invite-signup.tsx";
 import ForgotPassword from "@/pages/auth/forgot-password.tsx";
 import PasswordReset from "./pages/auth/password-reset";
-import SharedPage from "@/pages/share/shared-page.tsx";
-import Shares from "@/pages/settings/shares/shares.tsx";
-import ShareLayout from "@/features/share/components/share-layout.tsx";
+import PageRedirect from "@/pages/page/page-redirect.tsx";
 import ShareRedirect from "@/pages/share/share-redirect.tsx";
-import { useTrackOrigin } from "@/hooks/use-track-origin";
-import SpacesPage from "@/pages/spaces/spaces.tsx";
-import SpaceTrash from "@/pages/space/space-trash.tsx";
-import FavoritesPage from "@/pages/favorites/favorites-page";
-import LabelPage from "@/pages/label/label-page";
+
+// Heavy / leaf pages are route-split with React.lazy so their code (most
+// importantly the whole TipTap editor + KaTeX + lowlight grammars + drawio that
+// the page editor and the readonly share editor pull in) is fetched only when
+// the matching route is actually visited. The <Suspense> boundaries live inside
+// each Layout (around its <Outlet/>), so the app shell stays mounted while a
+// route chunk loads.
+const Home = lazy(() => import("@/pages/dashboard/home"));
+const Page = lazy(() => import("@/pages/page/page"));
+const SpaceHome = lazy(() => import("@/pages/space/space-home.tsx"));
+const SpaceTrash = lazy(() => import("@/pages/space/space-trash.tsx"));
+const SpacesPage = lazy(() => import("@/pages/spaces/spaces.tsx"));
+const FavoritesPage = lazy(() => import("@/pages/favorites/favorites-page"));
+const LabelPage = lazy(() => import("@/pages/label/label-page"));
+const SharedPage = lazy(() => import("@/pages/share/shared-page.tsx"));
+
+const AccountSettings = lazy(
+  () => import("@/pages/settings/account/account-settings"),
+);
+const AccountPreferences = lazy(
+  () => import("@/pages/settings/account/account-preferences.tsx"),
+);
+const WorkspaceSettings = lazy(
+  () => import("@/pages/settings/workspace/workspace-settings"),
+);
+const AiSettings = lazy(() => import("@/pages/settings/workspace/ai-settings"));
+const WorkspaceMembers = lazy(
+  () => import("@/pages/settings/workspace/workspace-members"),
+);
+const Groups = lazy(() => import("@/pages/settings/group/groups"));
+const GroupInfo = lazy(() => import("./pages/settings/group/group-info"));
+const Spaces = lazy(() => import("@/pages/settings/space/spaces.tsx"));
+const Shares = lazy(() => import("@/pages/settings/shares/shares.tsx"));
 
 export default function App() {
   useTrackOrigin();
 
   return (
-    <>
+    <Suspense
+      fallback={
+        <Center h="100vh">
+          <Loader size="sm" />
+        </Center>
+      }
+    >
       <Routes>
         <Route index element={<Navigate to="/home" />} />
         <Route path={"/login"} element={<LoginPage />} />
@@ -83,6 +117,6 @@ export default function App() {
 
         <Route path="*" element={<Error404 />} />
       </Routes>
-    </>
+    </Suspense>
   );
 }

apps/client/src/components/chunk-load-error-boundary.test.ts

@@ -0,0 +1,37 @@
+import { describe, it, expect } from "vitest";
+import { isChunkLoadError } from "./chunk-load-error-boundary";
+
+// The detector decides whether a caught render error is a stale-deploy chunk-404
+// (→ auto-reload to fetch the new manifest) vs a genuine app error (→ generic
+// recovery UI, no reload). A false negative on a real chunk failure re-blanks the
+// app; a false positive would auto-reload on an ordinary error. Pin both sides.
+describe("isChunkLoadError", () => {
+  it("detects the ChunkLoadError name", () => {
+    expect(isChunkLoadError({ name: "ChunkLoadError", message: "x" })).toBe(true);
+  });
+
+  it.each([
+    "Failed to fetch dynamically imported module: https://x/assets/index-abc.js",
+    "error loading dynamically imported module",
+    "Importing a module script failed.",
+  ])("detects the dynamic-import failure message %#", (message) => {
+    expect(isChunkLoadError({ name: "TypeError", message })).toBe(true);
+  });
+
+  it("is case-insensitive on the message", () => {
+    expect(
+      isChunkLoadError({ message: "FAILED TO FETCH DYNAMICALLY IMPORTED MODULE" }),
+    ).toBe(true);
+  });
+
+  it.each([
+    null,
+    undefined,
+    {},
+    { name: "TypeError", message: "Cannot read properties of undefined" },
+    { message: "Network request failed" },
+    new Error("some ordinary render error"),
+  ])("returns false for a non-chunk error %#", (err) => {
+    expect(isChunkLoadError(err)).toBe(false);
+  });
+});

apps/client/src/components/chunk-load-error-boundary.tsx

@@ -0,0 +1,71 @@
+import { ReactNode } from "react";
+import { ErrorBoundary } from "react-error-boundary";
+import { Button, Center, Stack, Text } from "@mantine/core";
+
+const RELOAD_FLAG = "chunk-reload-attempted";
+
+// Heuristic detection of a failed dynamic import. Since the code-splitting work,
+// every route (plus Aside / AiChatWindow) is React.lazy: when a new deploy
+// replaces the hashed chunks, a tab left open on the old index.html requests a
+// chunk URL that now 404s, and React.lazy rejects. Browsers / Vite surface these
+// with a ChunkLoadError name or one of these messages.
+export function isChunkLoadError(error: unknown): boolean {
+  if (!error) return false;
+  const name = (error as { name?: string }).name ?? "";
+  const message = (error as { message?: string }).message ?? "";
+  return (
+    name === "ChunkLoadError" ||
+    /Failed to fetch dynamically imported module/i.test(message) ||
+    /error loading dynamically imported module/i.test(message) ||
+    /Importing a module script failed/i.test(message)
+  );
+}
+
+function handleError(error: unknown) {
+  if (!isChunkLoadError(error)) return;
+  // A stale-chunk 404 is cured by a full reload that re-fetches index.html and
+  // the new chunk manifest. Auto-reload once, guarding against a reload loop
+  // (e.g. a genuinely missing chunk) with a one-shot sessionStorage flag. If the
+  // flag is already set we fall through to the manual recovery UI below.
+  try {
+    if (sessionStorage.getItem(RELOAD_FLAG)) return;
+    sessionStorage.setItem(RELOAD_FLAG, "1");
+  } catch {
+    // sessionStorage unavailable (private mode / disabled): skip the automatic
+    // reload rather than risk an unguarded loop; the fallback UI still recovers.
+    return;
+  }
+  window.location.reload();
+}
+
+// Root-level boundary that sits ABOVE every route-level Suspense boundary so a
+// lazy route/component chunk failure is caught here instead of unmounting the
+// whole tree into a blank white screen. Per-feature ErrorBoundaries (page.tsx,
+// transclusion, page-embed) remain in place underneath for their local errors.
+export function ChunkLoadErrorBoundary({ children }: { children: ReactNode }) {
+  return (
+    <ErrorBoundary
+      onError={handleError}
+      fallbackRender={({ error }) => {
+        const chunk = isChunkLoadError(error);
+        return (
+          <Center h="100vh" p="md">
+            <Stack align="center" gap="sm" maw={420}>
+              <Text fw={600}>
+                {chunk ? "A new version is available" : "Something went wrong"}
+              </Text>
+              <Text size="sm" c="dimmed" ta="center">
+                {chunk
+                  ? "Please reload the page to load the latest version."
+                  : "An unexpected error occurred. Reloading the page may help."}
+              </Text>
+              <Button onClick={() => window.location.reload()}>Reload</Button>
+            </Stack>
+          </Center>
+        );
+      }}
+    >
+      {children}
+    </ErrorBoundary>
+  );
+}

apps/client/src/components/layouts/global/global-app-shell.tsx

@@ -1,9 +1,10 @@
 import { AppShell, Container } from "@mantine/core";
-import React, { useEffect, useRef, useState } from "react";
+import React, { Suspense, useEffect, useRef, useState } from "react";
 import { useLocation } from "react-router-dom";
 import { useTranslation } from "react-i18next";
 import SettingsSidebar from "@/components/settings/settings-sidebar.tsx";
-import { useAtom } from "jotai";
+import { useAtom, useAtomValue } from "jotai";
+import { aiChatWindowOpenAtom } from "@/features/ai-chat/atoms/ai-chat-atom.ts";
 import {
   APP_NAVBAR_ID,
   NAVBAR_COLLAPSE_BREAKPOINT,
@@ -14,8 +15,6 @@ import {
 } from "@/components/layouts/global/hooks/atoms/sidebar-atom.ts";
 import { SpaceSidebar } from "@/features/space/components/sidebar/space-sidebar.tsx";
 import { AppHeader } from "@/components/layouts/global/app-header.tsx";
-import Aside from "@/components/layouts/global/aside.tsx";
-import AiChatWindow from "@/features/ai-chat/components/ai-chat-window.tsx";
 import GitmostGlobalBridge from "@/features/editor/gitmost/gitmost-global-bridge.tsx";
 import classes from "./app-shell.module.css";
 import { useToggleSidebar } from "@/components/layouts/global/hooks/hooks/use-toggle-sidebar.ts";
@@ -23,6 +22,21 @@ import GlobalSidebar from "@/components/layouts/global/global-sidebar.tsx";
 import { ASIDE_PANEL_ID } from "@/hooks/use-toggle-aside.tsx";
 import { MAIN_CONTENT_ID, SkipToMain } from "@/components/ui/skip-to-main.tsx";
 
+// Lazily load the AI chat window so the AI SDK runtime it pulls in is fetched
+// only after the user first opens the chat, instead of for every authenticated
+// user on load. The window itself renders null while closed, so there is no
+// behavior difference — it simply is not mounted until first opened.
+const AiChatWindow = React.lazy(
+  () => import("@/features/ai-chat/components/ai-chat-window.tsx"),
+);
+
+// The right aside hosts the comment panel and table of contents, both of which
+// pull in TipTap. It only ever renders on page routes, so lazy-loading it keeps
+// the whole editor engine out of the eager global-shell startup graph.
+const Aside = React.lazy(
+  () => import("@/components/layouts/global/aside.tsx"),
+);
+
 export default function GlobalAppShell({
   children,
 }: {
@@ -37,6 +51,15 @@ export default function GlobalAppShell({
   const [isResizing, setIsResizing] = useState(false);
   const sidebarRef = useRef(null);
 
+  // Latch: once the AI chat window has been opened, keep it mounted so an
+  // in-flight stream is never torn down. Before the first open the AI chat chunk
+  // is never fetched.
+  const aiChatOpen = useAtomValue(aiChatWindowOpenAtom);
+  const [aiChatEverOpened, setAiChatEverOpened] = useState(false);
+  useEffect(() => {
+    if (aiChatOpen) setAiChatEverOpened(true);
+  }, [aiChatOpen]);
+
   const startResizing = React.useCallback((mouseDownEvent) => {
     mouseDownEvent.preventDefault();
     setIsResizing(true);
@@ -160,13 +183,21 @@ export default function GlobalAppShell({
                   : undefined
           }
         >
-          <Aside />
+          <Suspense fallback={null}>
+            <Aside />
+          </Suspense>
         </AppShell.Aside>
       )}
     </AppShell>
-    {/* Floating AI chat window. Mounted once globally; it is position: fixed
-        and self-hides when closed, so its place in the tree is not critical. */}
-    <AiChatWindow />
+    {/* Floating AI chat window. Mounted once globally on first open; it is
+        position: fixed and self-hides when closed, so its place in the tree is
+        not critical. Kept mounted after the first open so a live stream is not
+        aborted. */}
+    {aiChatEverOpened && (
+      <Suspense fallback={null}>
+        <AiChatWindow />
+      </Suspense>
+    )}
       {/* Global gitmost native bridge: registers listSpaces / listPages /
           createPageWithRecording on window.gitmost so the native host can
           create a page with a recording even when no page editor is open. */}

apps/client/src/components/layouts/global/layout.tsx

@@ -1,5 +1,7 @@
+import { Suspense, useEffect } from "react";
 import { UserProvider } from "@/features/user/user-provider.tsx";
 import { Outlet, useParams } from "react-router-dom";
+import { Center, Loader } from "@mantine/core";
 import GlobalAppShell from "@/components/layouts/global/global-app-shell.tsx";
 import { SearchSpotlight } from "@/features/search/components/search-spotlight.tsx";
 import { useGetSpaceBySlugQuery } from "@/features/space/queries/space-query.ts";
@@ -8,10 +10,39 @@ export default function Layout() {
   const { spaceSlug } = useParams();
   const { data: space } = useGetSpaceBySlugQuery(spaceSlug);
 
+  // Warm the (now route-split) editor chunk during idle time on authenticated
+  // routes, so the first navigation to a page renders from cache instead of a
+  // cold chunk fetch. Best-effort: gated on requestIdleCallback and never blocks
+  // startup — the dynamic import mirrors the App.tsx route lazy loader so both
+  // resolve to the same chunk.
+  useEffect(() => {
+    const ric =
+      typeof window !== "undefined" && (window as any).requestIdleCallback;
+    const warm = () => {
+      // Best-effort prefetch: a failed warm-up (offline, stale 404) is harmless
+      // and must not surface as an unhandledrejection.
+      void import("@/pages/page/page").catch(() => {});
+    };
+    if (ric) {
+      const id = ric(warm);
+      return () => (window as any).cancelIdleCallback?.(id);
+    }
+    const timer = setTimeout(warm, 2000);
+    return () => clearTimeout(timer);
+  }, []);
+
   return (
     <UserProvider>
       <GlobalAppShell>
-        <Outlet />
+        <Suspense
+          fallback={
+            <Center h="60vh">
+              <Loader size="sm" />
+            </Center>
+          }
+        >
+          <Outlet />
+        </Suspense>
       </GlobalAppShell>
       <SearchSpotlight spaceId={space?.id} />
     </UserProvider>

apps/client/src/features/editor/atoms/editor-atoms.ts

@@ -1,19 +1,13 @@
 import { atom } from "jotai";
-import { Editor } from "@tiptap/core";
-import type { HocuspocusProvider } from "@hocuspocus/provider";
+// Type-only: these atoms only hold an Editor reference for typing. A value
+// import would drag the whole @tiptap/core engine into the eager graph of every
+// shell component that reads one of these atoms.
+import type { Editor } from "@tiptap/core";
 import { PageEditMode } from "@/features/user/types/user.types.ts";
 import type { DictationUnavailableReason } from "@/features/dictation/dictation-status";
 
 export const pageEditorAtom = atom<Editor | null>(null);
 
-// #370 — the active page's collab provider, published by the page editor so the
-// header menu can emit the "save-version" stateless signal (Cmd+S / button).
-// Null when the page is read-only / collab isn't connected. A typed initial
-// value (rather than an explicit generic) keeps jotai's overload resolution on
-// the writable PrimitiveAtom branch.
-const initialCollabProvider: HocuspocusProvider | null = null;
-export const collabProviderAtom = atom(initialCollabProvider);
-
 export const titleEditorAtom = atom<Editor | null>(null);
 
 export const readOnlyEditorAtom = atom<Editor | null>(null);

apps/client/src/features/editor/components/drawio/drawio-menu-lazy.tsx

@@ -0,0 +1,16 @@
+import { lazy, Suspense } from "react";
+import { EditorMenuProps } from "@/features/editor/components/table/types/types.ts";
+
+// Lazily load the drawio bubble menu so it is split out of the editor chunk and
+// fetched only when an editable editor is mounted (mirrors excalidraw-menu-lazy).
+const DrawioMenu = lazy(
+  () => import("@/features/editor/components/drawio/drawio-menu.tsx"),
+);
+
+export default function DrawioMenuLazy(props: EditorMenuProps) {
+  return (
+    <Suspense fallback={null}>
+      <DrawioMenu {...props} />
+    </Suspense>
+  );
+}

apps/client/src/features/editor/components/drawio/drawio-view-lazy.tsx

@@ -0,0 +1,17 @@
+import { lazy, Suspense } from "react";
+import { NodeViewProps } from "@tiptap/react";
+
+// Lazily load the drawio node view so the heavy react-drawio embed runtime is
+// split into its own chunk and fetched only when a drawio diagram is actually
+// rendered (mirrors excalidraw-view-lazy).
+const DrawioView = lazy(
+  () => import("@/features/editor/components/drawio/drawio-view.tsx"),
+);
+
+export default function DrawioViewLazy(props: NodeViewProps) {
+  return (
+    <Suspense fallback={null}>
+      <DrawioView {...props} />
+    </Suspense>
+  );
+}

apps/client/src/features/editor/components/math/math-block-lazy.tsx

@@ -0,0 +1,19 @@
+import { lazy, Suspense } from "react";
+import { NodeViewProps } from "@tiptap/react";
+
+// Lazily load the KaTeX-backed block math view so the katex chunk is fetched
+// only when a document actually contains a math node (mirrors the mermaid/
+// excalidraw lazy pattern). The local Suspense keeps a slow katex chunk from
+// crashing or blocking the whole editor: while it loads we render the raw
+// LaTeX source as a node-sized placeholder.
+const MathBlockView = lazy(
+  () => import("@/features/editor/components/math/math-block.tsx"),
+);
+
+export default function MathBlockViewLazy(props: NodeViewProps) {
+  return (
+    <Suspense fallback={<div data-katex="true">{props.node.attrs.text}</div>}>
+      <MathBlockView {...props} />
+    </Suspense>
+  );
+}

apps/client/src/features/editor/components/math/math-inline-lazy.tsx

@@ -0,0 +1,19 @@
+import { lazy, Suspense } from "react";
+import { NodeViewProps } from "@tiptap/react";
+
+// Lazily load the KaTeX-backed inline math view so the katex chunk is fetched
+// only when a document actually contains a math node (mirrors the mermaid/
+// excalidraw lazy pattern). The local Suspense keeps a slow katex chunk from
+// crashing or blocking the whole editor: while it loads we render the raw
+// LaTeX source as a node-sized placeholder.
+const MathInlineView = lazy(
+  () => import("@/features/editor/components/math/math-inline.tsx"),
+);
+
+export default function MathInlineViewLazy(props: NodeViewProps) {
+  return (
+    <Suspense fallback={<span data-katex="true">{props.node.attrs.text}</span>}>
+      <MathInlineView {...props} />
+    </Suspense>
+  );
+}

apps/client/src/features/editor/extensions/extensions.ts

@@ -81,8 +81,8 @@ import {
   createResizeHandle,
   buildResizeClasses,
 } from "@/features/editor/components/common/node-resize-handles.ts";
-import MathInlineView from "@/features/editor/components/math/math-inline.tsx";
-import MathBlockView from "@/features/editor/components/math/math-block.tsx";
+import MathInlineView from "@/features/editor/components/math/math-inline-lazy.tsx";
+import MathBlockView from "@/features/editor/components/math/math-block-lazy.tsx";
 import ImageView from "@/features/editor/components/image/image-view.tsx";
 import CalloutView from "@/features/editor/components/callout/callout-view.tsx";
 import StatusView from "@/features/editor/components/status/status-view.tsx";
@@ -90,7 +90,7 @@ import VideoView from "@/features/editor/components/video/video-view.tsx";
 import AudioView from "@/features/editor/components/audio/audio-view.tsx";
 import AttachmentView from "@/features/editor/components/attachment/attachment-view.tsx";
 import CodeBlockView from "@/features/editor/components/code-block/code-block-view.tsx";
-import DrawioView from "../components/drawio/drawio-view";
+import DrawioView from "../components/drawio/drawio-view-lazy.tsx";
 import ExcalidrawView from "@/features/editor/components/excalidraw/excalidraw-view-lazy.tsx";
 import EmbedView from "@/features/editor/components/embed/embed-view.tsx";
 import HtmlEmbedView from "@/features/editor/components/html-embed/html-embed-view.tsx";

apps/client/src/features/editor/gitmost/gitmost-global-bridge.tsx

@@ -1,8 +1,17 @@
 import { useEffect, useRef } from "react";
 import { useNavigate } from "react-router-dom";
 import { getDefaultStore } from "jotai";
-import { WebSocketStatus } from "@hocuspocus/provider";
-import { Editor } from "@tiptap/core";
+
+// Literal value of WebSocketStatus.Connected from @hocuspocus/provider. Inlined
+// so this always-mounted global bridge does not statically import
+// @hocuspocus/provider — that import pulls Yjs (and, through a shared chunk, the
+// whole TipTap engine) into the eager startup graph. yjsConnectionStatusAtom
+// already stores these raw status strings.
+const YJS_STATUS_CONNECTED = "connected";
+// Type-only: importing Editor as a type keeps @tiptap/core (the whole editor
+// engine) out of the eager global-shell graph — the bridge only uses it for
+// annotations/casts, never as a runtime value.
+import type { Editor } from "@tiptap/core";
 import {
   pageEditorAtom,
   yjsConnectionStatusAtom,
@@ -16,16 +25,19 @@ import {
   getSidebarPages,
 } from "@/features/page/services/page-service.ts";
 import { buildPageUrl } from "@/features/page/page.utils.ts";
-import {
+// Types are erased at build time, so importing them does not pull the module's
+// runtime (which drags in @tiptap + the editor-ext barrel). The actual recording
+// helpers are dynamically imported at call time inside createPageWithRecording,
+// keeping the editor engine out of the eager global-shell startup graph — the
+// bridge is mounted for every authenticated user but recording is a rare,
+// native-host-driven action.
+import type {
   GitmostBridge,
   GitmostCreatePagePayload,
   GitmostCreatePageResult,
   GitmostListPagesPayload,
   GitmostListPagesResult,
   GitmostListSpacesResult,
-  gitmostDecodePayloadToFile,
-  gitmostInsertTranscriptIntoEditor,
-  gitmostUploadFileToEditor,
 } from "@/features/editor/gitmost/gitmost-recording.ts";
 
 // How long to wait for a freshly-navigated page's editor to mount, become
@@ -58,7 +70,7 @@ function gitmostWaitForEditor(
         !editor.isDestroyed &&
         editor.isEditable &&
         editorPageId === pageId &&
-        yjsStatus === WebSocketStatus.Connected;
+        yjsStatus === YJS_STATUS_CONNECTED;
       if (ready) {
         resolve(editor);
         return;
@@ -172,6 +184,15 @@ export default function GitmostGlobalBridge() {
           };
         }
 
+        // Load the recording helpers on demand (see the import note above). This
+        // is the only place they are needed, so the @tiptap/editor-ext code they
+        // pull in stays out of the eager startup graph.
+        const {
+          gitmostDecodePayloadToFile,
+          gitmostUploadFileToEditor,
+          gitmostInsertTranscriptIntoEditor,
+        } = await import("@/features/editor/gitmost/gitmost-recording.ts");
+
         // Validate/decode the recording BEFORE creating the page so a bad
         // payload never leaves an empty junk page behind. Per the createPage
         // error contract, any decode failure collapses to "insert-failed" (the

apps/client/src/features/editor/page-editor.tsx

@@ -31,18 +31,11 @@ import { useAtom, useAtomValue, useSetAtom } from "jotai";
 import useCollaborationUrl from "@/features/editor/hooks/use-collaboration-url";
 import { currentUserAtom } from "@/features/user/atoms/current-user-atom";
 import {
-  collabProviderAtom,
   currentPageEditModeAtom,
   dictationAvailabilityAtom,
   pageEditorAtom,
   yjsConnectionStatusAtom,
 } from "@/features/editor/atoms/editor-atoms";
-import { notifications } from "@mantine/notifications";
-import {
-  VERSION_SAVED_MESSAGE_TYPE,
-  type VersionSavedMessage,
-  saveVersionPending,
-} from "@/features/page-history/version-messages";
 import { asideStateAtom } from "@/components/layouts/global/hooks/atoms/sidebar-atom";
 import {
   activeCommentIdAtom,
@@ -66,7 +59,7 @@ import {
   handlePaste,
 } from "@/features/editor/components/common/editor-paste-handler.tsx";
 import ExcalidrawMenu from "./components/excalidraw/excalidraw-menu-lazy";
-import DrawioMenu from "./components/drawio/drawio-menu";
+import DrawioMenu from "./components/drawio/drawio-menu-lazy";
 import { useCollabToken } from "@/features/auth/queries/auth-query.tsx";
 import SearchAndReplaceDialog from "@/features/editor/components/search-and-replace/search-and-replace-dialog.tsx";
 import { useDebouncedCallback, useDocumentVisibility } from "@mantine/hooks";
@@ -130,7 +123,6 @@ export default function PageEditor({
 
   const [currentUser] = useAtom(currentUserAtom);
   const [, setEditor] = useAtom(pageEditorAtom);
-  const setCollabProvider = useSetAtom(collabProviderAtom);
   const [, setAsideState] = useAtom(asideStateAtom);
   const [, setActiveCommentId] = useAtom(activeCommentIdAtom);
   const [showCommentPopup, setShowCommentPopup] = useAtom(showCommentPopupAtom);
@@ -188,24 +180,6 @@ export default function PageEditor({
       const onStatelessHandler = ({ payload }: onStatelessParameters) => {
         try {
           const message = JSON.parse(payload);
-          // #370 — a version was saved somewhere; live-refresh the history panel
-          // on every client. Only the client that pressed Save (tracked by the
-          // module-level flag) shows the confirmation toast.
-          if (message?.type === VERSION_SAVED_MESSAGE_TYPE) {
-            const versionMsg = message as VersionSavedMessage;
-            queryClient.invalidateQueries({
-              queryKey: ["page-history-list"],
-            });
-            if (saveVersionPending.current) {
-              saveVersionPending.current = false;
-              notifications.show({
-                message: versionMsg.alreadySaved
-                  ? t("Already saved as the latest version")
-                  : t("Version saved"),
-              });
-            }
-            return;
-          }
           if (message?.type !== "page.updated" || !message.updatedAt) return;
           const pageData = queryClient.getQueryData<IPage>(["pages", slugId]);
           if (pageData) {
@@ -263,16 +237,12 @@ export default function PageEditor({
 
       local.on("synced", onLocalSyncedHandler);
       providersRef.current = { socket, local, remote };
-      // #370 — publish the provider so the header menu can emit save-version.
-      setCollabProvider(remote);
       setProvidersReady(true);
     } else {
-      setCollabProvider(providersRef.current.remote);
       setProvidersReady(true);
     }
     // Only destroy on final unmount
     return () => {
-      setCollabProvider(null);
       providersRef.current?.socket.destroy();
       providersRef.current?.remote.destroy();
       providersRef.current?.local.destroy();

apps/client/src/features/page-history/components/history-item.tsx

@@ -1,11 +1,4 @@
-import {
-  Text,
-  Group,
-  UnstyledButton,
-  Avatar,
-  Tooltip,
-  Badge,
-} from "@mantine/core";
+import { Text, Group, UnstyledButton, Avatar, Tooltip } from "@mantine/core";
 import { CustomAvatar } from "@/components/ui/custom-avatar.tsx";
 import { AgentAvatarStack } from "@/components/ui/agent-avatar-stack.tsx";
 import { formattedDate } from "@/lib/time";
@@ -14,59 +7,36 @@ import clsx from "clsx";
 import { IPageHistory } from "@/features/page-history/types/page.types";
 import { memo, useCallback } from "react";
 import { useSetAtom } from "jotai";
-import { useTranslation } from "react-i18next";
 import { historyAtoms } from "@/features/page-history/atoms/history-atoms.ts";
 
 const MAX_VISIBLE_AVATARS = 5;
 
-/**
- * #370 — map a snapshot's intentionality tier to its badge. `version: true`
- * marks the intentional points (manual / agent); autosaves (boundary / idle /
- * legacy null) are non-versions and get dimmed in the list.
- */
-type HistoryKindMeta = { labelKey: string; color: string; version: boolean };
-export function historyKindMeta(kind?: string | null): HistoryKindMeta {
-  switch (kind) {
-    case "manual":
-      return { labelKey: "Saved", color: "blue", version: true };
-    case "agent":
-      return { labelKey: "Agent version", color: "violet", version: true };
-    case "boundary":
-      return { labelKey: "Boundary", color: "gray", version: false };
-    default: // "idle" | null | undefined (legacy autosave)
-      return { labelKey: "Autosave", color: "gray", version: false };
-  }
-}
-
 interface HistoryItemProps {
   historyItem: IPageHistory;
-  // The previous snapshot for diff/restore is resolved by id from the FULL list
-  // in the parent (resolvePrevSnapshotId), so the item only needs to report its
-  // own id — never a list index (which would be the filtered-view index).
-  onSelect: (id: string) => void;
-  onHover?: (id: string) => void;
+  index: number;
+  onSelect: (id: string, index: number) => void;
+  onHover?: (id: string, index: number) => void;
   onHoverEnd?: () => void;
   isActive: boolean;
 }
 
 const HistoryItem = memo(function HistoryItem({
   historyItem,
+  index,
   onSelect,
   onHover,
   onHoverEnd,
   isActive,
 }: HistoryItemProps) {
   const setHistoryModalOpen = useSetAtom(historyAtoms);
-  const { t } = useTranslation();
-  const kindMeta = historyKindMeta(historyItem.kind);
 
   const handleClick = useCallback(() => {
-    onSelect(historyItem.id);
-  }, [onSelect, historyItem.id]);
+    onSelect(historyItem.id, index);
+  }, [onSelect, historyItem.id, index]);
 
   const handleMouseEnter = useCallback(() => {
-    onHover?.(historyItem.id);
-  }, [onHover, historyItem.id]);
+    onHover?.(historyItem.id, index);
+  }, [onHover, historyItem.id, index]);
 
   const contributors = historyItem.contributors;
   const hasContributors = contributors && contributors.length > 0;
@@ -79,20 +49,8 @@ const HistoryItem = memo(function HistoryItem({
       onMouseEnter={handleMouseEnter}
       onMouseLeave={onHoverEnd}
       className={clsx(classes.history, { [classes.active]: isActive })}
-      // #370 — dim autosnapshots so intentional versions stand out.
-      style={{ opacity: kindMeta.version ? 1 : 0.55 }}
     >
-      <Group gap={6} wrap="nowrap" justify="space-between">
-        <Text size="sm">{formattedDate(new Date(historyItem.createdAt))}</Text>
-        <Badge
-          size="xs"
-          radius="sm"
-          variant={kindMeta.version ? "filled" : "light"}
-          color={kindMeta.color}
-        >
-          {t(kindMeta.labelKey)}
-        </Badge>
-      </Group>
+      <Text size="sm">{formattedDate(new Date(historyItem.createdAt))}</Text>
 
       <Group gap={6} wrap="nowrap" mt={4}>
         {hasContributors ? (

apps/client/src/features/page-history/components/history-list.tsx

@@ -9,7 +9,7 @@ import {
   historyAtoms,
 } from "@/features/page-history/atoms/history-atoms";
 import { useAtom, useSetAtom } from "jotai";
-import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef } from "react";
 import {
   Button,
   ScrollArea,
@@ -17,12 +17,9 @@ import {
   Divider,
   Loader,
   Center,
-  Switch,
-  Text,
 } from "@mantine/core";
 import { useTranslation } from "react-i18next";
 import { useHistoryRestore } from "@/features/page-history/hooks";
-import { resolvePrevSnapshotId } from "@/features/page-history/utils/resolve-prev-snapshot";
 
 const PREFETCH_DELAY_MS = 150;
 
@@ -50,23 +47,6 @@ function HistoryList({ pageId }: Props) {
     [pageHistoryData],
   );
 
-  // #370 — "only versions" filter: hide autosnapshots (idle/boundary/legacy
-  // null), keep only intentional points (manual/agent). Filtering is over the
-  // already-loaded pages; the diff/restore still targets the true previous
-  // snapshot, so items carry their index within the FULL list.
-  const [onlyVersions, setOnlyVersions] = useState(false);
-  const isVersion = useCallback(
-    (kind?: string | null) => kind === "manual" || kind === "agent",
-    [],
-  );
-  const visibleItems = useMemo(
-    () =>
-      onlyVersions
-        ? historyItems.filter((item) => isVersion(item.kind))
-        : historyItems,
-    [historyItems, onlyVersions, isVersion],
-  );
-
   const loadMoreRef = useRef<HTMLDivElement>(null);
   const prefetchTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(null);
 
@@ -80,13 +60,11 @@ function HistoryList({ pageId }: Props) {
   }, []);
 
   const handleHover = useCallback(
-    (historyId: string) => {
+    (historyId: string, index: number) => {
       clearPrefetchTimeout();
       prefetchTimeoutRef.current = setTimeout(() => {
         prefetchPageHistory(historyId);
-        // The true previous snapshot in the FULL list (not the previous visible
-        // one under the "only versions" filter).
-        const prevId = resolvePrevSnapshotId(historyItems, historyId);
+        const prevId = historyItems[index + 1]?.id;
         if (prevId) {
           prefetchPageHistory(prevId);
         }
@@ -100,11 +78,9 @@ function HistoryList({ pageId }: Props) {
   }, [clearPrefetchTimeout]);
 
   const handleSelect = useCallback(
-    (id: string) => {
+    (id: string, index: number) => {
       setActiveHistoryId(id);
-      // Baseline = true previous snapshot in the FULL list, so the "only
-      // versions" filter never diffs/restores against the wrong item.
-      setActiveHistoryPrevId(resolvePrevSnapshotId(historyItems, id));
+      setActiveHistoryPrevId(historyItems[index + 1]?.id ?? "");
     },
     [historyItems, setActiveHistoryId, setActiveHistoryPrevId],
   );
@@ -152,27 +128,12 @@ function HistoryList({ pageId }: Props) {
 
   return (
     <div>
-      <Group px="xs" py={6} justify="flex-end">
-        <Switch
-          size="xs"
-          checked={onlyVersions}
-          onChange={(e) => setOnlyVersions(e.currentTarget.checked)}
-          label={t("Only versions")}
-        />
-      </Group>
-
       <ScrollArea h={620} w="100%" type="scroll" scrollbarSize={5}>
-        {onlyVersions && visibleItems.length === 0 && (
-          <Center py="md">
-            <Text size="sm" c="dimmed">
-              {t("No saved versions yet.")}
-            </Text>
-          </Center>
-        )}
-        {visibleItems.map((historyItem) => (
+        {historyItems.map((historyItem, index) => (
           <HistoryItem
             key={historyItem.id}
             historyItem={historyItem}
+            index={index}
             onSelect={handleSelect}
             onHover={handleHover}
             onHoverEnd={clearPrefetchTimeout}

apps/client/src/features/page-history/types/page.types.ts

@@ -24,10 +24,6 @@ export interface IPageHistory {
   updatedAt: string;
   lastUpdatedBy: IPageHistoryUser;
   contributors?: IPageHistoryUser[];
-  // #370 — intentionality tier: 'manual'/'agent' are versions (intentional
-  // points), 'idle'/'boundary' are autosnapshots; null/undefined = legacy
-  // autosave. Derived server-side, drives the history badge + "versions" filter.
-  kind?: "manual" | "agent" | "idle" | "boundary" | null;
   // Provenance markers copied off the page row when the snapshot was saved.
   // `'agent'` marks a version written by the AI agent; `lastUpdatedAiChatId`
   // (when present) deep-links to the chat that produced the edit.

apps/client/src/features/page-history/utils/resolve-prev-snapshot.test.ts

@@ -1,42 +0,0 @@
-import { describe, it, expect } from "vitest";
-import { resolvePrevSnapshotId } from "./resolve-prev-snapshot";
-
-// #370 F4 — the risky client path: with the "only versions" filter active, diff
-// and restore must still baseline against the TRUE previous snapshot in the FULL
-// list, never the previous VISIBLE version (which would skip the autosnapshots
-// between two versions). These pin that the resolution is by FULL-list order.
-describe("resolvePrevSnapshotId", () => {
-  // Newest-first, as the history list stores it: a version, then two autosaves,
-  // then an older version.
-  const full = [
-    { id: "v2", kind: "manual" },
-    { id: "a2", kind: "idle" },
-    { id: "a1", kind: "boundary" },
-    { id: "v1", kind: "manual" },
-    { id: "a0", kind: null },
-  ];
-
-  it("returns the immediate FULL-list successor, not the previous visible version", () => {
-    // Selecting v2 while filtered to versions-only must baseline against a2 (the
-    // real chronological predecessor), NOT v1 (the previous visible version).
-    expect(resolvePrevSnapshotId(full, "v2")).toBe("a2");
-  });
-
-  it("resolves an autosnapshot's predecessor by full-list order", () => {
-    expect(resolvePrevSnapshotId(full, "a1")).toBe("v1");
-  });
-
-  it("returns '' for the oldest item (no predecessor)", () => {
-    expect(resolvePrevSnapshotId(full, "a0")).toBe("");
-  });
-
-  it("returns '' for an id not in the list", () => {
-    expect(resolvePrevSnapshotId(full, "missing")).toBe("");
-  });
-
-  it("does not depend on a filtered subset — same result whatever is visible", () => {
-    // The helper only ever sees the full list; a filtered view cannot change the
-    // baseline it computes.
-    expect(resolvePrevSnapshotId(full, "v1")).toBe("a0");
-  });
-});

apps/client/src/features/page-history/utils/resolve-prev-snapshot.ts

@@ -1,22 +0,0 @@
-/**
- * #370 — resolve the TRUE previous snapshot for a history item.
- *
- * The history panel can be filtered to "only versions" (manual/agent), but diff
- * and restore must always compare against the immediately-preceding snapshot in
- * the FULL, unfiltered list — NOT the previous VISIBLE item. Comparing against
- * the previous visible version would silently skip the autosnapshots between two
- * versions and diff/restore the wrong baseline.
- *
- * Given the full (newest-first) list and an item id, this returns the id of the
- * item right after it in the full list (its chronological predecessor), or "" if
- * it is the oldest / not found. Pure and list-order-preserving so it can be unit
- * tested without mounting the component.
- */
-export function resolvePrevSnapshotId(
-  fullItems: ReadonlyArray<{ id: string }>,
-  id: string,
-): string {
-  const index = fullItems.findIndex((item) => item.id === id);
-  if (index === -1) return "";
-  return fullItems[index + 1]?.id ?? "";
-}

apps/client/src/features/page-history/version-messages.ts

@@ -1,28 +0,0 @@
-/**
- * #370 — page-version stateless wire formats. Kept in one place so the client
- * emitter (Save hotkey / button) and the client listener (page-editor) agree
- * with the server (PersistenceExtension) on the message shapes.
- */
-
-/** Client → server: "save a version now". The server derives the tier
- * (manual/agent) from the signed connection actor, never from this payload. */
-export const SAVE_VERSION_MESSAGE_TYPE = "save-version";
-
-/** Server → all clients: a version was saved (or promoted / already existed). */
-export const VERSION_SAVED_MESSAGE_TYPE = "version.saved";
-
-export interface VersionSavedMessage {
-  type: typeof VERSION_SAVED_MESSAGE_TYPE;
-  historyId: string;
-  kind: "manual" | "agent";
-  /** True when the latest snapshot was already a manual version (a no-op save). */
-  alreadySaved: boolean;
-}
-
-/**
- * Cross-component coordination flag so only the client that pressed Save shows
- * the confirmation toast, while every other client silently refreshes its
- * history panel on the broadcast. A module-level ref avoids stale-closure
- * pitfalls in the editor's long-lived stateless handler.
- */
-export const saveVersionPending = { current: false };

apps/client/src/features/page/components/header/page-header-menu.tsx

@@ -3,7 +3,6 @@ import {
   IconArrowRight,
   IconArrowsHorizontal,
   IconClockHour4,
-  IconDeviceFloppy,
   IconDots,
   IconEye,
   IconEyeOff,
@@ -18,7 +17,7 @@ import {
   IconTrash,
   IconWifiOff,
 } from "@tabler/icons-react";
-import React, { useCallback, useEffect, useRef, useState } from "react";
+import React, { useEffect, useRef, useState } from "react";
 import { useAsideTriggerProps } from "@/hooks/use-toggle-aside.tsx";
 import { useAtom, useAtomValue } from "jotai";
 import { historyAtoms } from "@/features/page-history/atoms/history-atoms.ts";
@@ -40,14 +39,9 @@ import { Trans, useTranslation } from "react-i18next";
 import ExportModal from "@/components/common/export-modal";
 import { htmlToMarkdown } from "@docmost/editor-ext";
 import {
-  collabProviderAtom,
   pageEditorAtom,
   yjsConnectionStatusAtom,
 } from "@/features/editor/atoms/editor-atoms.ts";
-import {
-  SAVE_VERSION_MESSAGE_TYPE,
-  saveVersionPending,
-} from "@/features/page-history/version-messages.ts";
 import { formattedDate } from "@/lib/time.ts";
 import { PageEditModeToggle } from "@/features/user/components/page-state-pref.tsx";
 import MovePageModal from "@/features/page/components/move-page-modal.tsx";
@@ -78,34 +72,9 @@ export default function PageHeaderMenu({ readOnly }: PageHeaderMenuProps) {
   });
   const isDeleted = !!page?.deletedAt;
   const [workspace] = useAtom(workspaceAtom);
-  const collabProvider = useAtomValue(collabProviderAtom);
   // Community public-sharing entry point (replaces the removed EE PageShareModal)
   const workspaceSharingDisabled = workspace?.settings?.sharing?.disabled === true;
 
-  // #370 — explicit "save a version" (Cmd+S / Save button). One path for the
-  // human; the server derives the tier from the signed actor. Readers can't save
-  // (the button is hidden and the collab connection is read-only server-side).
-  const handleSaveVersion = useCallback(() => {
-    if (readOnly || !collabProvider) return;
-    // Flag this client as the initiator so only it shows the confirmation toast;
-    // a safety timeout clears it if no broadcast comes back (e.g. offline).
-    saveVersionPending.current = true;
-    window.setTimeout(() => {
-      saveVersionPending.current = false;
-    }, 5000);
-    collabProvider.sendStateless(
-      JSON.stringify({ type: SAVE_VERSION_MESSAGE_TYPE }),
-    );
-  }, [readOnly, collabProvider]);
-
-  // mod+S must also block the browser's "Save page" dialog. `triggerOnContent-
-  // Editable` + empty ignore-list so it fires while typing in the editor/title.
-  useHotkeys(
-    [["mod+S", handleSaveVersion, { preventDefault: true }]],
-    [],
-    true,
-  );
-
   useHotkeys(
     [
       [
@@ -164,16 +133,15 @@ export default function PageHeaderMenu({ readOnly }: PageHeaderMenuProps) {
         </ActionIcon>
       </Tooltip>
 
-      <PageActionMenu readOnly={readOnly} onSaveVersion={handleSaveVersion} />
+      <PageActionMenu readOnly={readOnly} />
     </>
   );
 }
 
 interface PageActionMenuProps {
   readOnly?: boolean;
-  onSaveVersion?: () => void;
 }
-function PageActionMenu({ readOnly, onSaveVersion }: PageActionMenuProps) {
+function PageActionMenu({ readOnly }: PageActionMenuProps) {
   const { t } = useTranslation();
   const [, setHistoryModalOpen] = useAtom(historyAtoms);
   const clipboard = useClipboard({ timeout: 500 });
@@ -334,20 +302,6 @@ function PageActionMenu({ readOnly, onSaveVersion }: PageActionMenuProps) {
             </Group>
           </Menu.Item>
 
-          {!readOnly && (
-            <Menu.Item
-              leftSection={<IconDeviceFloppy size={16} />}
-              onClick={onSaveVersion}
-              rightSection={
-                <Text size="xs" c="dimmed">
-                  {t("Ctrl+S")}
-                </Text>
-              }
-            >
-              {t("Save version")}
-            </Menu.Item>
-          )}
-
           <Menu.Item
             leftSection={<IconHistory size={16} />}
             onClick={openHistoryModal}

apps/client/src/features/share/components/share-layout.tsx

@@ -1,10 +1,20 @@
+import { Suspense } from "react";
 import { Outlet } from "react-router-dom";
+import { Center, Loader } from "@mantine/core";
 import ShareShell from "@/features/share/components/share-shell.tsx";
 
 export default function ShareLayout() {
   return (
     <ShareShell>
-      <Outlet />
+      <Suspense
+        fallback={
+          <Center h="60vh">
+            <Loader size="sm" />
+          </Center>
+        }
+      >
+        <Outlet />
+      </Suspense>
     </ShareShell>
   );
 }

apps/client/src/hooks/use-clipboard.ts

@@ -1,7 +1,7 @@
 // Source: https://github.com/mantinedev/mantine/blob/master/packages/@mantine/hooks/src/use-clipboard/use-clipboard.ts
 // polyfilled to support execCommand fallback
 import { useState } from "react";
-import { execCommandCopy } from "@docmost/editor-ext";
+import { execCommandCopy } from "@/lib/copy-to-clipboard.ts";
 
 export type UseClipboardOptions = {
   timeout?: number;

apps/client/src/lib/config.ts

@@ -1,7 +1,7 @@
 import bytes from "bytes";
 import { castToBoolean } from "@/lib/utils.tsx";
 import { AvatarIconType } from "@/features/attachments/types/attachment.types.ts";
-import { sanitizeUrl } from "@docmost/editor-ext";
+import { sanitizeUrl } from "@/lib/sanitize-url.ts";
 
 declare global {
   interface Window {

apps/client/src/lib/copy-to-clipboard.ts

@@ -0,0 +1,16 @@
+// Client-local execCommand copy fallback (previously imported from
+// @docmost/editor-ext). It lives here so the ubiquitous useClipboard / CopyButton
+// path does not pull in the editor-ext barrel — and with it the whole TipTap
+// engine — through the eager startup graph. Behavior is identical to the
+// editor-ext helper it replaces.
+export function execCommandCopy(text: string): void {
+  const textarea = document.createElement("textarea");
+  textarea.value = text;
+  textarea.style.position = "fixed";
+  textarea.style.left = "-9999px";
+  textarea.style.top = "-9999px";
+  document.body.appendChild(textarea);
+  textarea.select();
+  document.execCommand("copy");
+  document.body.removeChild(textarea);
+}

apps/client/src/lib/sanitize-url.test.ts

@@ -0,0 +1,31 @@
+import { describe, it, expect } from "vitest";
+import { sanitizeUrl } from "./sanitize-url";
+
+// `sanitizeUrl` is a byte-identical client-local copy of editor-ext's wrapper
+// around @braintree/sanitize-url: it maps the sanitizer's "about:blank" XSS
+// sentinel to "". These assertions mirror editor-ext's own security-contract
+// test so the extracted copy keeps the same guarantees.
+describe("sanitizeUrl", () => {
+  it("blocks dangerous schemes (returns empty string)", () => {
+    expect(sanitizeUrl("javascript:alert(1)")).toBe("");
+    expect(sanitizeUrl("data:text/html,<script>alert(1)</script>")).toBe("");
+    expect(sanitizeUrl("vbscript:msgbox(1)")).toBe("");
+    // Case / whitespace obfuscation must not slip past the sanitizer.
+    expect(sanitizeUrl("  JaVaScRiPt:alert(1)")).toBe("");
+  });
+
+  it("returns empty string for empty / undefined input", () => {
+    expect(sanitizeUrl(undefined)).toBe("");
+    expect(sanitizeUrl("")).toBe("");
+  });
+
+  it("allows safe https, relative file and mailto URLs", () => {
+    expect(sanitizeUrl("https://example.com/page")).toMatch(
+      /^https:\/\/example\.com\/page/,
+    );
+    expect(sanitizeUrl("/api/files/abc-123")).toBe("/api/files/abc-123");
+    expect(sanitizeUrl("mailto:user@example.com")).toBe(
+      "mailto:user@example.com",
+    );
+  });
+});

apps/client/src/lib/sanitize-url.ts

@@ -0,0 +1,15 @@
+import { sanitizeUrl as braintreeSanitizeUrl } from "@braintree/sanitize-url";
+
+// Client-local copy of editor-ext's sanitizeUrl wrapper. Importing it from the
+// editor-ext barrel dragged the whole TipTap engine into the eager startup graph
+// via the app-wide config module (getFileUrl). This keeps the exact same
+// behavior (braintree sanitize + normalize "about:blank" -> "") without that
+// dependency.
+export function sanitizeUrl(url: string | undefined): string {
+  if (!url) return "";
+
+  const sanitized = braintreeSanitizeUrl(url);
+
+  // Return an empty string instead of "about:blank".
+  return sanitized === "about:blank" ? "" : sanitized;
+}

apps/client/src/main.tsx

@@ -13,15 +13,14 @@ import { ModalsProvider } from "@mantine/modals";
 import { Notifications } from "@mantine/notifications";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import { HelmetProvider } from "react-helmet-async";
+import { ChunkLoadErrorBoundary } from "@/components/chunk-load-error-boundary.tsx";
 import "./i18n";
-import { PostHogProvider } from "posthog-js/react";
 import {
   getPostHogHost,
   getPostHogKey,
   isCloud,
   isPostHogEnabled,
 } from "@/lib/config.ts";
-import posthog from "posthog-js";
 import { initVitals } from "@/lib/telemetry/vitals";
 
 export const queryClient = new QueryClient({
@@ -35,15 +34,6 @@ export const queryClient = new QueryClient({
   },
 });
 
-if (isCloud() && isPostHogEnabled) {
-  posthog.init(getPostHogKey(), {
-    api_host: getPostHogHost(),
-    defaults: "2025-05-24",
-    disable_session_recording: true,
-    capture_pageleave: false,
-  });
-}
-
 // #355 — client perf-telemetry. Decides sampling ONCE (25%/session) before
 // subscribing to any observer; non-sampled sessions send nothing.
 initVitals();
@@ -51,19 +41,62 @@ initVitals();
 const container = document.getElementById("root") as HTMLElement;
 const root = (container as any).__reactRoot ??= ReactDOM.createRoot(container);
 
-root.render(
-  <BrowserRouter>
-    <MantineProvider theme={theme} cssVariablesResolver={mantineCssResolver}>
-      <ModalsProvider>
-        <QueryClientProvider client={queryClient}>
-          <Notifications position="bottom-center" limit={3} zIndex={10000} />
-          <HelmetProvider>
-            <PostHogProvider client={posthog}>
-              <App />
-            </PostHogProvider>
-          </HelmetProvider>
-        </QueryClientProvider>
-      </ModalsProvider>
-    </MantineProvider>
-  </BrowserRouter>,
-);
+function renderApp() {
+  root.render(
+    <BrowserRouter>
+      <MantineProvider theme={theme} cssVariablesResolver={mantineCssResolver}>
+        <ModalsProvider>
+          <QueryClientProvider client={queryClient}>
+            <Notifications position="bottom-center" limit={3} zIndex={10000} />
+            <HelmetProvider>
+              {/* Root boundary above every lazy route's Suspense: a stale-chunk
+                  404 after a deploy is caught and recovered here instead of
+                  blanking the whole app. */}
+              <ChunkLoadErrorBoundary>
+                <App />
+              </ChunkLoadErrorBoundary>
+            </HelmetProvider>
+          </QueryClientProvider>
+        </ModalsProvider>
+      </MantineProvider>
+    </BrowserRouter>,
+  );
+}
+
+async function initAnalytics() {
+  // posthog-js is only pulled in for cloud deployments with analytics enabled, so
+  // self-hosted builds never download it. The gate is kept identical to the
+  // previous eager code so cloud analytics behavior is unchanged; the import is
+  // simply deferred behind it.
+  //
+  // Crucially this runs AFTER the immediate first render below, so first paint is
+  // never gated on the analytics chunk. Any failure (network, stale 404, or an
+  // ad-blocker blocking a chunk named "posthog") is swallowed so the user keeps a
+  // working app without analytics instead of a permanently blank page.
+  //
+  // NOTE: we init the posthog SINGLETON only and do NOT wrap the tree in
+  // <PostHogProvider>. The app has zero consumers of the PostHog React context
+  // (no usePostHog / useFeatureFlag* / PostHogFeature), and PostHogProvider given
+  // an already-initialized `client` is a no-op — all capture goes through the
+  // singleton. Re-rendering to attach the provider would only REMOUNT the whole
+  // App (running every mount effect twice and dropping local state / focus /
+  // in-progress input on cloud cold-load) for no functional gain.
+  if (!(isCloud() && isPostHogEnabled)) return;
+  try {
+    const { default: posthog } = await import("posthog-js");
+    posthog.init(getPostHogKey(), {
+      api_host: getPostHogHost(),
+      defaults: "2025-05-24",
+      disable_session_recording: true,
+      capture_pageleave: false,
+    });
+  } catch {
+    // Analytics failed to load — degrade gracefully; the app already rendered.
+  }
+}
+
+// Paint immediately for everyone (self-hosted stays exactly as instant as before,
+// cloud no longer blocks on the analytics import). The posthog singleton is
+// initialized after, without re-rendering the tree.
+renderApp();
+void initAnalytics();

apps/client/vite.config.ts

@@ -63,6 +63,20 @@ export default defineConfig(({ mode }) => {
                 name: "vendor-mantine",
                 test: /[\\/]node_modules[\\/]@mantine[\\/]/,
               },
+              // NOTE: TipTap/ProseMirror/Yjs are intentionally NOT force-grouped
+              // into a single vendor chunk. Doing so backfires: rolldown co-locates
+              // a small module shared with the (eager) react-i18next runtime into
+              // that group chunk, which then drags the whole ~590KB editor engine
+              // into the eager modulepreload graph. Left to the default splitting,
+              // the editor engine stays in lazily-loaded chunks pulled only by the
+              // route-split editor/share pages. KaTeX is safe to group (nothing
+              // eager references it).
+              // KaTeX in its own stable chunk; loaded on demand by the lazy math
+              // node views (never in the startup path).
+              {
+                name: "vendor-katex",
+                test: /[\\/]node_modules[\\/]katex[\\/]/,
+              },
             ],
           },
         },

apps/server/src/collaboration/constants.ts

@@ -1,29 +1,3 @@
-/**
- * #370 — page-history intentionality tiers. Domain of `page_history.kind`.
- *   - 'manual' / 'agent'  → Tier 1 versions (intentional points)
- *   - 'idle' / 'boundary' → Tier 0 autosnapshots (safety net)
- * A legacy `null` kind is treated as an autosave.
- */
-export type PageHistoryKind = 'manual' | 'agent' | 'idle' | 'boundary';
-
-/**
- * #370 — trailing idle-flush windows. A page's pending idle snapshot is
- * re-armed on every store and fires this long after edits go quiet, so a burst
- * of edits collapses into a single autosnapshot instead of one-per-store. Human
- * sessions are noisier and less risky, so they flush less often than the agent.
- */
-export const IDLE_INTERVAL_USER = 60 * 60 * 1000; // 60m
-export const IDLE_INTERVAL_AGENT = 15 * 60 * 1000; // 15m
-
-/**
- * #370 — max-wait ceiling for the idle flush. Pure trailing debounce starves the
- * safety net: hocuspocus stores at least every ~45s, so a CONTINUOUS editing
- * session would re-arm the trailing timer forever and never take an idle
- * snapshot until edits finally go quiet (up to IDLE_INTERVAL_USER = 60m). This
- * ceiling bounds the actual wait from the FIRST edit of a burst, so an idle
- * snapshot fires at least this often during a long unbroken session — restoring
- * a recovery point cadence closer to the old heuristic without one-per-store
- * noise. Mirrors hocuspocus's own maxDebounce idea.
- */
-export const IDLE_MAX_WAIT_USER = 10 * 60 * 1000; // 10m
-export const IDLE_MAX_WAIT_AGENT = 5 * 60 * 1000; // 5m
+export const HISTORY_INTERVAL = 5 * 60 * 1000;
+export const HISTORY_FAST_INTERVAL = 60 * 1000;
+export const HISTORY_FAST_THRESHOLD = 5 * 60 * 1000;

apps/server/src/collaboration/extensions/compute-history-job.spec.ts

@@ -1,93 +1,84 @@
-import { computeHistoryJob, resolveSource } from './persistence.extension';
 import {
-  IDLE_INTERVAL_AGENT,
-  IDLE_INTERVAL_USER,
-  IDLE_MAX_WAIT_AGENT,
-  IDLE_MAX_WAIT_USER,
+  computeHistoryJob,
+  resolveSource,
+} from './persistence.extension';
+import {
+  HISTORY_FAST_INTERVAL,
+  HISTORY_FAST_THRESHOLD,
+  HISTORY_INTERVAL,
 } from '../constants';
 
+// A fixed clock + fixed createdAt make pageAge deterministic.
+const NOW = 1_700_000_000_000;
 const PAGE_ID = '550e8400-e29b-41d4-a716-446655440000';
 
-const page = { id: PAGE_ID };
+// Build a minimal page whose age (NOW - createdAt) is exactly `ageMs`.
+const pageAged = (ageMs: number) => ({
+  id: PAGE_ID,
+  createdAt: new Date(NOW - ageMs),
+});
 
-describe('computeHistoryJob (#370 — shared trailing idle pipeline)', () => {
-  it('human edit → user idle window, bare page.id job', () => {
-    // Humans and the agent now share ONE idle job per page (jobId = page.id).
-    // The agent's old delay=0 fast path is GONE — intentional agent points now
-    // arrive via the explicit save-version signal, not a zero-delay snapshot.
-    const { jobId, delay } = computeHistoryJob(page, 'user');
-    expect(delay).toBe(IDLE_INTERVAL_USER);
+describe('computeHistoryJob', () => {
+  it('agent edit → delay MUST be 0 and job id is source-keyed', () => {
+    // INVARIANT (§15 H2 / persistence.extension): the agent delay MUST stay 0.
+    // The worker re-reads the page row at run time, so any non-zero delay risks
+    // snapshotting content a later human edit has already overwritten. This is
+    // the load-bearing assertion of this spec — do not relax it.
+    const { jobId, delay } = computeHistoryJob(pageAged(0), 'agent', NOW);
+    expect(delay).toBe(0);
+    expect(jobId).toBe(`${PAGE_ID}-agent`);
+  });
+
+  it('agent edit on an OLD page is still delay 0 (age never applies to agents)', () => {
+    // Even when the page is far older than the fast threshold, the agent path
+    // must short-circuit to 0 — age-based debounce is a human-only concern.
+    const { jobId, delay } = computeHistoryJob(
+      pageAged(HISTORY_FAST_THRESHOLD + 60_000),
+      'agent',
+      NOW,
+    );
+    expect(delay).toBe(0);
+    expect(jobId).toBe(`${PAGE_ID}-agent`);
+  });
+
+  it('human edit on a YOUNG page (age < threshold) → fast interval, bare job id', () => {
+    const { jobId, delay } = computeHistoryJob(
+      pageAged(HISTORY_FAST_THRESHOLD - 1),
+      'user',
+      NOW,
+    );
+    expect(delay).toBe(HISTORY_FAST_INTERVAL);
     expect(jobId).toBe(PAGE_ID);
   });
 
-  it('agent edit → agent idle window (shorter), still the bare page.id job', () => {
-    const { jobId, delay } = computeHistoryJob(page, 'agent');
-    expect(delay).toBe(IDLE_INTERVAL_AGENT);
-    // No `-agent` suffix anymore: the agent joins the common idle pipeline.
+  it('human edit on an OLD page (age > threshold) → standard interval', () => {
+    const { jobId, delay } = computeHistoryJob(
+      pageAged(HISTORY_FAST_THRESHOLD + 1),
+      'user',
+      NOW,
+    );
+    expect(delay).toBe(HISTORY_INTERVAL);
     expect(jobId).toBe(PAGE_ID);
   });
 
-  it('agent flushes sooner than a human', () => {
-    expect(IDLE_INTERVAL_AGENT).toBeLessThan(IDLE_INTERVAL_USER);
+  it('boundary: pageAge EXACTLY === threshold takes the slow branch (the `<` is strict)', () => {
+    // Off-by-one guard: the condition is `pageAge < HISTORY_FAST_THRESHOLD`, so
+    // an age of exactly the threshold is NOT "fast" — it must use HISTORY_INTERVAL.
+    const { delay } = computeHistoryJob(
+      pageAged(HISTORY_FAST_THRESHOLD),
+      'user',
+      NOW,
+    );
+    expect(delay).toBe(HISTORY_INTERVAL);
   });
 
-  it('treats any non-"agent" source string as human (keys strictly on === agent)', () => {
-    const { jobId, delay } = computeHistoryJob(page, 'user');
-    expect(delay).toBe(IDLE_INTERVAL_USER);
+  it('treats any non-"agent" source string as human', () => {
+    // resolveSource only ever yields 'agent' | 'user', but guard the contract:
+    // the agent branch keys strictly on === 'agent'.
+    const { jobId, delay } = computeHistoryJob(pageAged(0), 'user', NOW);
+    expect(delay).toBe(HISTORY_FAST_INTERVAL);
     expect(jobId).toBe(PAGE_ID);
   });
-
-  // #370 review round-1 WARNING: the max-wait ceiling prevents autosnapshot
-  // starvation during a continuous editing session (the trailing timer would
-  // otherwise re-arm forever and never fire).
-  describe('max-wait ceiling', () => {
-    const T0 = 1_000_000; // arbitrary fixed epoch for deterministic tests
-
-    it('once a burst is armed, delay clamps to the remaining max-wait budget', () => {
-      // 1 minute into the burst the USER interval (60m) far exceeds the remaining
-      // max-wait budget (10m - 1m = 9m), so the delay is clamped DOWN to that
-      // remaining budget — the full interval is NOT used once a ceiling applies.
-      const { delay } = computeHistoryJob(page, 'user', T0, T0 + 60_000);
-      expect(delay).toBe(IDLE_MAX_WAIT_USER - 60_000);
-    });
-
-    it('never waits longer than the max-wait budget from the burst start', () => {
-      // A store arriving right at the ceiling → delay 0 (fire promptly).
-      const { delay } = computeHistoryJob(
-        page,
-        'user',
-        T0,
-        T0 + IDLE_MAX_WAIT_USER,
-      );
-      expect(delay).toBe(0);
-    });
-
-    it('past the ceiling never returns a negative delay', () => {
-      const { delay } = computeHistoryJob(
-        page,
-        'user',
-        T0,
-        T0 + IDLE_MAX_WAIT_USER + 5 * 60_000,
-      );
-      expect(delay).toBe(0);
-    });
-
-    it('the agent ceiling is shorter than the user ceiling', () => {
-      expect(IDLE_MAX_WAIT_AGENT).toBeLessThan(IDLE_MAX_WAIT_USER);
-      const { delay } = computeHistoryJob(
-        page,
-        'agent',
-        T0,
-        T0 + IDLE_MAX_WAIT_AGENT,
-      );
-      expect(delay).toBe(0);
-    });
-
-    it('without a burstStart there is no ceiling (backward-compatible)', () => {
-      expect(computeHistoryJob(page, 'user').delay).toBe(IDLE_INTERVAL_USER);
-      expect(computeHistoryJob(page, 'agent').delay).toBe(IDLE_INTERVAL_AGENT);
-    });
-  });
 });
 
 describe('resolveSource (truth table)', () => {

apps/server/src/collaboration/extensions/persistence-store.spec.ts

@@ -40,12 +40,11 @@ describe('PersistenceExtension.onStoreDocument — Approach-A boundary snapshot'
   let pageHistoryRepo: {
     saveHistory: jest.Mock;
     findPageLastHistory: jest.Mock;
-    updateHistoryKind: jest.Mock;
   };
   let aiQueue: { add: jest.Mock };
-  let historyQueue: { add: jest.Mock; remove: jest.Mock };
+  let historyQueue: { add: jest.Mock };
   let notificationQueue: { add: jest.Mock };
-  let collabHistory: { addContributors: jest.Mock; popContributors: jest.Mock };
+  let collabHistory: { addContributors: jest.Mock };
   let transclusionService: {
     syncPageTransclusions: jest.Mock;
     syncPageReferences: jest.Mock;
@@ -94,22 +93,13 @@ describe('PersistenceExtension.onStoreDocument — Approach-A boundary snapshot'
     pageHistoryRepo = {
       saveHistory: jest.fn().mockImplementation(async () => {
         callOrder.push('saveHistory');
-        return { id: 'history-1' };
       }),
       findPageLastHistory: jest.fn().mockResolvedValue(null),
-      updateHistoryKind: jest.fn().mockResolvedValue(undefined),
     };
     aiQueue = { add: jest.fn().mockResolvedValue(undefined) };
-    historyQueue = {
-      add: jest.fn().mockResolvedValue(undefined),
-      // #370 — enqueuePageHistory now removes any pending idle job before re-adding.
-      remove: jest.fn().mockResolvedValue(undefined),
-    };
+    historyQueue = { add: jest.fn().mockResolvedValue(undefined) };
     notificationQueue = { add: jest.fn().mockResolvedValue(undefined) };
-    collabHistory = {
-      addContributors: jest.fn().mockResolvedValue(undefined),
-      popContributors: jest.fn().mockResolvedValue([]),
-    };
+    collabHistory = { addContributors: jest.fn().mockResolvedValue(undefined) };
     transclusionService = {
       syncPageTransclusions: jest.fn().mockResolvedValue(undefined),
       syncPageReferences: jest.fn().mockResolvedValue(undefined),
@@ -175,50 +165,6 @@ describe('PersistenceExtension.onStoreDocument — Approach-A boundary snapshot'
     expect(pageRepo.updatePage.mock.calls[0][0].lastUpdatedSource).toBe('user');
   });
 
-  // #370 review round-1 SUGGESTION: the boundary was GENERALIZED from a
-  // user→agent special-case to ANY lastUpdatedSource transition. These pin the
-  // generalized behaviour it was rebuilt for.
-  describe('generalized boundary — any source transition', () => {
-    // Same persisted page but with an explicit prior source.
-    const pageWithPriorSource = (prior: string | null) => ({
-      ...persistedHumanPage('NEW CONTENT'),
-      lastUpdatedSource: prior,
-    });
-
-    it('agent→user transition fires the boundary (pins the prior agent revision)', async () => {
-      const document = ydocFor(doc('NEW CONTENT'));
-      pageRepo.findById.mockResolvedValue(pageWithPriorSource('agent'));
-      pageHistoryRepo.findPageLastHistory.mockResolvedValue(null);
-
-      await ext.onStoreDocument(buildData(document, 'user') as any);
-
-      expect(pageHistoryRepo.saveHistory).toHaveBeenCalledTimes(1);
-      expect(callOrder).toEqual(['saveHistory', 'updatePage']);
-      expect(pageRepo.updatePage.mock.calls[0][0].lastUpdatedSource).toBe('user');
-    });
-
-    it('git→user transition fires the boundary (git-sync overwrite is a source change)', async () => {
-      const document = ydocFor(doc('NEW CONTENT'));
-      pageRepo.findById.mockResolvedValue(pageWithPriorSource('git'));
-      pageHistoryRepo.findPageLastHistory.mockResolvedValue(null);
-
-      await ext.onStoreDocument(buildData(document, 'user') as any);
-
-      expect(pageHistoryRepo.saveHistory).toHaveBeenCalledTimes(1);
-      expect(callOrder).toEqual(['saveHistory', 'updatePage']);
-    });
-
-    it('a null prior source (first-ever edit) does NOT fire the boundary', async () => {
-      const document = ydocFor(doc('NEW CONTENT'));
-      pageRepo.findById.mockResolvedValue(pageWithPriorSource(null));
-
-      await ext.onStoreDocument(buildData(document, 'agent') as any);
-
-      expect(pageHistoryRepo.saveHistory).not.toHaveBeenCalled();
-      expect(pageRepo.updatePage).toHaveBeenCalledTimes(1);
-    });
-  });
-
   it('idempotency: unchanged content → no updatePage, no history, no queues', async () => {
     // The Y.Doc content equals the persisted content deeply → early skip.
     // A Y.Doc round-trip normalizes attrs (e.g. paragraph indent), so derive
@@ -523,125 +469,4 @@ describe('PersistenceExtension.onStoreDocument — Approach-A boundary snapshot'
     // Contributors keyed by the UUID so they match the PAGE_HISTORY job (page.id).
     expect(collabHistory.addContributors.mock.calls[0][0]).toBe(PAGE_ID);
   });
-
-  // #370 — explicit save-version (Cmd+S / agent save tool) over the stateless
-  // seam. The tier is derived from the SIGNED connection actor, the store path
-  // is reused, and promote-not-dup avoids duplicating heavy content rows.
-  describe('save-version (#370)', () => {
-    const emitSave = (document: any, actor: 'user' | 'agent') =>
-      ext.onStateless({
-        connection: {
-          readOnly: false,
-          context: { user: { id: USER_ID, name: 'Alice' }, actor },
-        } as any,
-        documentName: `page.${PAGE_ID}`,
-        document: document as any,
-        payload: JSON.stringify({ type: 'save-version' }),
-      } as any);
-
-    // findById returns a page whose content already equals the live doc, so the
-    // store path is a no-op and we isolate the versioning decision.
-    const pageMatchingDoc = (document: any) => ({
-      ...persistedHumanPage('IGNORED'),
-      content: TiptapTransformer.fromYdoc(document, 'default'),
-    });
-
-    it('human save with no prior snapshot → writes a manual version + broadcasts', async () => {
-      const document = ydocFor(doc('VERSION ME'));
-      pageRepo.findById.mockResolvedValue(pageMatchingDoc(document));
-      pageHistoryRepo.findPageLastHistory.mockResolvedValue(null);
-
-      await emitSave(document, 'user');
-
-      expect(pageHistoryRepo.saveHistory).toHaveBeenCalledTimes(1);
-      expect(pageHistoryRepo.saveHistory.mock.calls[0][1]).toEqual(
-        expect.objectContaining({ kind: 'manual' }),
-      );
-      // The pending idle autosnapshot is cancelled by the explicit version.
-      expect(historyQueue.remove).toHaveBeenCalledWith(PAGE_ID);
-      const msg = JSON.parse(
-        (document as any).broadcastStateless.mock.calls[(document as any).broadcastStateless.mock.calls.length - 1][0],
-      );
-      expect(msg).toMatchObject({
-        type: 'version.saved',
-        kind: 'manual',
-        alreadySaved: false,
-      });
-    });
-
-    it('agent save derives kind=agent from the signed actor', async () => {
-      const document = ydocFor(doc('AGENT VERSION'));
-      pageRepo.findById.mockResolvedValue(pageMatchingDoc(document));
-      pageHistoryRepo.findPageLastHistory.mockResolvedValue(null);
-
-      await emitSave(document, 'agent');
-
-      expect(pageHistoryRepo.saveHistory.mock.calls[pageHistoryRepo.saveHistory.mock.calls.length - 1][1]).toEqual(
-        expect.objectContaining({ kind: 'agent' }),
-      );
-    });
-
-    it('promote-not-dup: latest snapshot is an autosave with identical content → upgrades in place', async () => {
-      const document = ydocFor(doc('SAME'));
-      const page = pageMatchingDoc(document);
-      pageRepo.findById.mockResolvedValue(page);
-      pageHistoryRepo.findPageLastHistory.mockResolvedValue({
-        id: 'auto-1',
-        content: page.content,
-        kind: 'idle',
-      });
-
-      await emitSave(document, 'user');
-
-      // No heavy new content row — the existing autosave is promoted to manual.
-      expect(pageHistoryRepo.updateHistoryKind).toHaveBeenCalledWith(
-        'auto-1',
-        'manual',
-        expect.anything(),
-      );
-      expect(pageHistoryRepo.saveHistory).not.toHaveBeenCalled();
-      const msg = JSON.parse(
-        (document as any).broadcastStateless.mock.calls[(document as any).broadcastStateless.mock.calls.length - 1][0],
-      );
-      expect(msg).toMatchObject({ historyId: 'auto-1', alreadySaved: false });
-    });
-
-    it('no-op when the latest snapshot is already a manual version of this content', async () => {
-      const document = ydocFor(doc('ALREADY SAVED'));
-      const page = pageMatchingDoc(document);
-      pageRepo.findById.mockResolvedValue(page);
-      pageHistoryRepo.findPageLastHistory.mockResolvedValue({
-        id: 'ver-1',
-        content: page.content,
-        kind: 'manual',
-      });
-
-      await emitSave(document, 'user');
-
-      expect(pageHistoryRepo.updateHistoryKind).not.toHaveBeenCalled();
-      expect(pageHistoryRepo.saveHistory).not.toHaveBeenCalled();
-      const msg = JSON.parse(
-        (document as any).broadcastStateless.mock.calls[(document as any).broadcastStateless.mock.calls.length - 1][0],
-      );
-      expect(msg).toMatchObject({ alreadySaved: true, kind: 'manual' });
-    });
-
-    it('a read-only connection cannot save a version', async () => {
-      const document = ydocFor(doc('READER'));
-      pageRepo.findById.mockResolvedValue(pageMatchingDoc(document));
-
-      await ext.onStateless({
-        connection: {
-          readOnly: true,
-          context: { user: { id: USER_ID }, actor: 'user' },
-        } as any,
-        documentName: `page.${PAGE_ID}`,
-        document: document as any,
-        payload: JSON.stringify({ type: 'save-version' }),
-      } as any);
-
-      expect(pageHistoryRepo.saveHistory).not.toHaveBeenCalled();
-      expect(pageHistoryRepo.updateHistoryKind).not.toHaveBeenCalled();
-    });
-  });
 });

apps/server/src/collaboration/extensions/persistence.extension.ts

@@ -36,11 +36,9 @@ import {
 import { Page } from '@docmost/db/types/entity.types';
 import { CollabHistoryService } from '../services/collab-history.service';
 import {
-  IDLE_INTERVAL_AGENT,
-  IDLE_INTERVAL_USER,
-  IDLE_MAX_WAIT_AGENT,
-  IDLE_MAX_WAIT_USER,
-  PageHistoryKind,
+  HISTORY_FAST_INTERVAL,
+  HISTORY_FAST_THRESHOLD,
+  HISTORY_INTERVAL,
 } from '../constants';
 import { TransclusionService } from '../../core/page/transclusion/transclusion.service';
 import { observeCollabStore } from '../../integrations/metrics/metrics.registry';
@@ -53,16 +51,6 @@ import { observeCollabStore } from '../../integrations/metrics/metrics.registry'
  */
 export const INTENTIONAL_CLEAR_MESSAGE_TYPE = 'intentional-clear';
 
-/**
- * #370 — wire format of the client→server "save a version" signal. Sent by the
- * human (Cmd+S / Save button) and by the agent's explicit save tool over the
- * SAME stateless channel. The intentionality tier ('manual' vs 'agent') is
- * derived SERVER-SIDE from the signed connection actor, never from this
- * payload, so a version's type is unforgeable. The document is taken from the
- * connection (not the payload), so the signal cannot be aimed at another page.
- */
-export const SAVE_VERSION_MESSAGE_TYPE = 'save-version';
-
 /**
  * #251 — how long an intentional-clear signal stays "pending" before it is
  * ignored. The signal is set on the clearing keystroke but consumed by the
@@ -99,39 +87,35 @@ export function resolveSource(
 }
 
 /**
- * #370 — compute the BullMQ job id + delay for a page's trailing idle-flush
- * autosnapshot. Pure so the timing is unit-testable.
+ * Compute the BullMQ job id + delay for a page-history snapshot job. Pure so
+ * the data-loss-sensitive timing arithmetic is unit-testable; `now` is injected
+ * (caller passes `Date.now()`) for determinism.
  *
- * Both humans and the agent now share ONE idle pipeline (the agent's old
- * `delay=0` fast path is gone — intentional agent points arrive via the
- * explicit save-version signal instead). The job id is the bare `page.id`, so a
- * page has at most one pending idle job; the caller removes-and-re-adds it on
- * every store to keep it debounced to the trailing edge of an edit burst. The
- * window differs by source only: the agent flushes sooner than a human.
+ * - Agent edits: delay 0 and a source-keyed job id `${page.id}-agent`. The
+ *   delay MUST stay 0 — the worker re-reads the page row at run time, so any
+ *   delay risks reading content a later human edit has already overwritten
+ *   (mis-tagged snapshot). 0 minimizes that window. The `-agent` suffix keeps
+ *   the job from coalescing with the bare-page.id human job.
+ * - Human edits: age-based debounce so rapid human edits coalesce into one
+ *   snapshot; job id is the bare `page.id`.
+ *
+ * BullMQ forbids ':' in custom job ids (Redis key separator), so '-' is used;
+ * page.id is a UUID, so `${page.id}-agent` cannot collide with a human job.
  */
 export function computeHistoryJob(
-  page: Pick<Page, 'id'>,
+  page: Pick<Page, 'id' | 'createdAt'>,
   source: string,
-  // Epoch ms of the FIRST edit in the current burst (when the pending idle job
-  // was first armed). Used to enforce the max-wait ceiling so a continuous
-  // editing session cannot re-arm the trailing timer forever. `now` is injectable
-  // for tests; both default to a live clock / no ceiling when omitted.
-  burstStart?: number,
-  now: number = Date.now(),
+  now: number,
 ): { jobId: string; delay: number } {
   const isAgent = source === 'agent';
-  const interval = isAgent ? IDLE_INTERVAL_AGENT : IDLE_INTERVAL_USER;
-  const maxWait = isAgent ? IDLE_MAX_WAIT_AGENT : IDLE_MAX_WAIT_USER;
-
-  let delay = interval;
-  if (burstStart !== undefined) {
-    // Time already elapsed since the burst's first edit; the snapshot must fire
-    // no later than `maxWait` after that, so shrink the trailing delay to the
-    // remaining budget (never negative, so BullMQ fires it promptly).
-    const remaining = burstStart + maxWait - now;
-    delay = Math.max(0, Math.min(interval, remaining));
-  }
-  return { jobId: page.id, delay };
+  const pageAge = now - new Date(page.createdAt).getTime();
+  const delay = isAgent
+    ? 0
+    : pageAge < HISTORY_FAST_THRESHOLD
+      ? HISTORY_FAST_INTERVAL
+      : HISTORY_INTERVAL;
+  const jobId = isAgent ? `${page.id}-agent` : page.id;
+  return { jobId, delay };
 }
 
 @Injectable()
@@ -143,11 +127,6 @@ export class PersistenceExtension implements Extension {
   // coalescing window" per document and OR it across all edits in the window,
   // so the snapshot is marked 'agent' regardless of who wrote last.
   private agentTouched: Map<string, boolean> = new Map();
-  // #370 — epoch ms of the FIRST edit in the current idle-flush burst, per page.
-  // Set when the pending idle job is first armed (empty entry), read to enforce
-  // the max-wait ceiling in computeHistoryJob, and cleared when the idle job is
-  // consumed/cancelled so the next burst starts a fresh window.
-  private idleBurstStart: Map<string, number> = new Map();
   // #251 — per-document "intentional clear pending" flags. Keyed by
   // documentName, value = expiry timestamp (ms). Set by onStateless when the
   // client reports a deliberate clear; consumed once by the next
@@ -347,19 +326,20 @@ export class PersistenceExtension implements Extension {
             //this.logger.debug('Contributors error:' + err?.['message']);
           }
 
-          // #370 — boundary snapshot on ANY source transition. When the store
-          // flips the page's provenance (user↔agent↔git), pin the OUTGOING
-          // state as its own history version BEFORE the incoming source
-          // overwrites it. `page` still holds the OLD content/provenance here,
-          // so saveHistory(page) captures the pre-transition state tagged with
-          // its own source, kind='boundary'. The incoming content is snapshotted
-          // later by the debounced idle job. Skip if the page is effectively
-          // empty or if the latest existing snapshot already equals this state
-          // (the shared isDeepStrictEqual gate — avoids duplicates). Generalizing
-          // beyond the old user→agent special-case also covers git-sync for free.
+          // Approach A — boundary snapshot before the agent's first edit.
+          // When this store is the agent's and the page's currently persisted
+          // state was authored by a human, pin that human state as its own
+          // history version BEFORE the agent overwrites it. `page` still holds
+          // the OLD content/provenance here, so saveHistory(page) captures the
+          // pre-agent state tagged 'user'. The agent's new content is
+          // snapshotted later by the debounced PAGE_HISTORY job ('agent'). Skip
+          // if the prior state is already agent-authored (boundary already
+          // pinned on the user->agent transition), if the page is effectively
+          // empty, or if the latest existing snapshot already equals this human
+          // state (avoid duplicates).
           if (
-            page.lastUpdatedSource &&
-            page.lastUpdatedSource !== lastUpdatedSource
+            lastUpdatedSource === 'agent' &&
+            page.lastUpdatedSource !== 'agent'
           ) {
             // pageHistory.pageId is uuid-typed; use page.id (never the doc-name
             // slugId) so a `page.<slugId>` doc cannot throw 22P02 here (#260).
@@ -367,13 +347,15 @@ export class PersistenceExtension implements Extension {
               page.id,
               { includeContent: true, trx },
             );
-            const baselineMissing =
+            const humanBaselineMissing =
               !lastHistory ||
               !isDeepStrictEqual(lastHistory.content, page.content);
-            if (!isEmptyParagraphDoc(page.content as any) && baselineMissing) {
+            if (
+              !isEmptyParagraphDoc(page.content as any) &&
+              humanBaselineMissing
+            ) {
               await this.pageHistoryRepo.saveHistory(page, {
                 contributorIds: page.contributorIds ?? undefined,
-                kind: 'boundary',
                 trx,
               });
             }
@@ -498,14 +480,6 @@ export class PersistenceExtension implements Extension {
       return; // unrelated / malformed stateless message
     }
 
-    // #370 — explicit "save a version" (human Cmd+S / agent save tool). Edit
-    // rights are already enforced by the readOnly reject above (a reader can't
-    // create a version), exactly as intentional-clear requires.
-    if (message?.type === SAVE_VERSION_MESSAGE_TYPE) {
-      await this.handleSaveVersion(data);
-      return;
-    }
-
     if (message?.type !== INTENTIONAL_CLEAR_MESSAGE_TYPE) return;
 
     this.intentionalClear.set(
@@ -514,117 +488,6 @@ export class PersistenceExtension implements Extension {
     );
   }
 
-  /**
-   * #370 — persist an intentional version from the live in-memory ydoc.
-   *
-   * One stateless path serves BOTH the human and the agent; the tier is derived
-   * SERVER-SIDE from the signed connection actor ('agent' → 'agent', anything
-   * else → 'manual'), so the version type cannot be spoofed by the client. We
-   * take the fresh ydoc from the collab process memory and run it through the
-   * EXISTING store path first (so pages.content/ydoc reflect the exact content
-   * being versioned — a REST endpoint would race the up-to-10s-stale page row),
-   * then snapshot it into page_history with the intentional kind.
-   *
-   * Promote-not-dup: if the latest history row already holds this exact content
-   * and it is an autosave (idle/boundary/legacy-null), upgrade its kind in place
-   * instead of duplicating a heavy content row; if it is already 'manual', it is
-   * a no-op (the client shows an "already saved" toast). Otherwise a fresh
-   * version row is written, popping the aggregated contributors from Redis.
-   */
-  private async handleSaveVersion(data: onStatelessPayload): Promise<void> {
-    const { connection, document, documentName } = data;
-    const context = connection?.context;
-    const pageId = getPageId(documentName);
-    // Unforgeable: 'agent' only for a signed agent connection, else 'manual'.
-    const kind: PageHistoryKind =
-      context?.actor === 'agent' ? 'agent' : 'manual';
-
-    // Flush the live ydoc through the normal store path so the page row + ydoc
-    // hold exactly what we are about to version (also fires the idle enqueue we
-    // supersede below, plus any source-transition boundary). onStoreDocument
-    // only needs document/documentName/context.
-    await this.onStoreDocument({
-      document,
-      documentName,
-      context,
-    } as onStoreDocumentPayload);
-
-    let result:
-      | { historyId: string; kind: PageHistoryKind; alreadySaved: boolean }
-      | undefined;
-
-    await executeTx(this.db, async (trx) => {
-      const page = await this.pageRepo.findById(pageId, {
-        withLock: true,
-        includeContent: true,
-        trx,
-      });
-      if (!page) return;
-      // Never version an effectively-empty page (mirrors the processor's
-      // first-history guard); there is nothing intentional to pin.
-      if (isEmptyParagraphDoc(page.content as any)) return;
-
-      const lastHistory = await this.pageHistoryRepo.findPageLastHistory(
-        page.id,
-        { includeContent: true, trx },
-      );
-
-      if (
-        lastHistory &&
-        isDeepStrictEqual(lastHistory.content, page.content)
-      ) {
-        // Content is already snapshotted. Promote-not-dup.
-        if (lastHistory.kind === 'manual') {
-          result = {
-            historyId: lastHistory.id,
-            kind: 'manual',
-            alreadySaved: true,
-          };
-          return;
-        }
-        await this.pageHistoryRepo.updateHistoryKind(
-          lastHistory.id,
-          kind,
-          trx,
-        );
-        result = { historyId: lastHistory.id, kind, alreadySaved: false };
-        return;
-      }
-
-      // Fresh version row. Pop the contributors aggregated since the last
-      // snapshot (SPOP); restore them if the write fails so they aren't lost.
-      const contributorIds = await this.collabHistory.popContributors(page.id);
-      try {
-        const saved = await this.pageHistoryRepo.saveHistory(page, {
-          contributorIds,
-          kind,
-          trx,
-        });
-        result = { historyId: saved.id, kind, alreadySaved: false };
-      } catch (err) {
-        await this.collabHistory.addContributors(page.id, contributorIds);
-        throw err;
-      }
-    });
-
-    // Housekeeping: this explicit version supersedes the page's pending idle
-    // autosnapshot, so cancel it (delayed job → remove() just deletes it) and
-    // end the current idle burst so the next edit starts a fresh max-wait window.
-    await this.historyQueue.remove(pageId).catch(() => undefined);
-    this.idleBurstStart.delete(pageId);
-
-    if (result) {
-      document.broadcastStateless(
-        JSON.stringify({
-          type: 'version.saved',
-          historyId: result.historyId,
-          kind: result.kind,
-          alreadySaved: result.alreadySaved,
-        }),
-      );
-    }
-  }
-
   async onChange(data: onChangePayload) {
     const documentName = data.documentName;
     const userId = data.context?.user?.id;
@@ -682,45 +545,17 @@ export class PersistenceExtension implements Extension {
     page: Page,
     lastUpdatedSource: string,
   ): Promise<void> {
-    // #370 — trailing idle debounce with a max-wait ceiling. One pending idle
-    // job per page (jobId = page.id); on every store we remove the pending
-    // delayed job and re-add it, so the snapshot lands `delay` after edits go
-    // quiet rather than once per store (precedent: workspace.service.ts).
-    // remove() on a delayed job simply deletes it (0 if absent, no throw); if the
-    // job is already ACTIVE and the remove is a no-op, the add still de-dups and
-    // the processor's isDeepStrictEqual gate collapses the duplicate content.
-    //
-    // The FIRST arm of a burst records `burstStart`; computeHistoryJob shrinks
-    // the delay to the remaining max-wait budget from that point, so a continuous
-    // session cannot re-arm the trailing timer forever and starve the snapshot.
-    // A burst marker older than THIS TIER's max-wait means the previous idle job
-    // has already fired — start a fresh window instead of firing immediately on
-    // the next edit. Must use the SAME source-specific max-wait computeHistoryJob
-    // uses (agent 5m / user 10m): a hardcoded USER ceiling would leave an agent
-    // burst's marker stale for 5..10m, forcing delay=0 on every store in that
-    // window and writing one idle row per store — exactly the per-store bloat the
-    // debounce exists to prevent, on the continuous-agent path.
-    const maxWait =
-      lastUpdatedSource === 'agent' ? IDLE_MAX_WAIT_AGENT : IDLE_MAX_WAIT_USER;
-    const now = Date.now();
-    let burstStart = this.idleBurstStart.get(page.id);
-    if (burstStart === undefined || now - burstStart >= maxWait) {
-      burstStart = now;
-      this.idleBurstStart.set(page.id, burstStart);
-    }
-
+    // Job id + delay arithmetic lives in the pure `computeHistoryJob` (see its
+    // doc comment for the agent-delay-0 / age-based-debounce invariants).
     const { jobId, delay } = computeHistoryJob(
       page,
       lastUpdatedSource,
-      burstStart,
-      now,
+      Date.now(),
     );
 
-    await this.historyQueue.remove(jobId).catch(() => undefined);
-
     await this.historyQueue.add(
       QueueJob.PAGE_HISTORY,
-      { pageId: page.id, kind: 'idle' } as IPageHistoryJob,
+      { pageId: page.id } as IPageHistoryJob,
       { jobId, delay },
     );
   }

apps/server/src/collaboration/processors/history.processor.spec.ts

@@ -66,15 +66,6 @@ describe('HistoryProcessor.process', () => {
     notificationQueue = { add: jest.fn().mockResolvedValue(undefined) };
     generalQueue = { add: jest.fn().mockResolvedValue(undefined) };
 
-    // #370 F3 — the processor now serializes its find+save under a page-row lock
-    // via executeTx. A db whose transaction().execute(fn) runs fn with a trx stub
-    // drives the real executeTx() helper without a database.
-    const db = {
-      transaction: () => ({
-        execute: (fn: (trx: any) => Promise<any>) => fn({ __trx: true }),
-      }),
-    };
-
     // WorkerHost's constructor reads `this.worker`; passing repos positionally
     // matches the constructor and avoids the Nest DI container.
     proc = new HistoryProcessor(
@@ -82,7 +73,6 @@ describe('HistoryProcessor.process', () => {
       pageRepo as any,
       collabHistory as any,
       watcherService as any,
-      db as any,
       notificationQueue as any,
       generalQueue as any,
     );
@@ -136,26 +126,15 @@ describe('HistoryProcessor.process', () => {
     await proc.process(buildJob());
 
     expect(collabHistory.popContributors).toHaveBeenCalledWith(PAGE_ID);
-    // #370 F3/F9 — the snapshot decision runs under a page-row lock. Pin the lock
-    // structurally so a refactor that drops withLock/trx (silently reintroducing
-    // the TOCTOU double-insert) turns this red. The tx stub is { __trx: true }.
-    expect(pageRepo.findById).toHaveBeenCalledWith(
-      PAGE_ID,
-      expect.objectContaining({ withLock: true, trx: { __trx: true } }),
-    );
-    // #370 F7 — addPageWatchers MUST receive the trx, or its FK-check runs on a
-    // separate connection and self-deadlocks against our FOR UPDATE. Asserting
-    // the trx arg here is exactly what would have caught that regression.
     expect(watcherService.addPageWatchers).toHaveBeenCalledWith(
       ['u1', 'u2'],
       PAGE_ID,
       SPACE_ID,
       WORKSPACE_ID,
-      { __trx: true },
     );
     expect(pageHistoryRepo.saveHistory).toHaveBeenCalledWith(
       expect.objectContaining({ id: PAGE_ID }),
-      { contributorIds: ['u1', 'u2'], kind: 'idle', trx: { __trx: true } },
+      { contributorIds: ['u1', 'u2'] },
     );
     expect(generalQueue.add).toHaveBeenCalledWith(
       QueueJob.PAGE_BACKLINKS,
@@ -207,48 +186,6 @@ describe('HistoryProcessor.process', () => {
     ]);
   });
 
-  it('COMMIT failure (throw outside the tx callback) → contributors RESTORED', async () => {
-    // #370 F8 — a commit-time failure throws OUTSIDE the callback, so the inner
-    // try/catch does not run; the outer catch must restore the popped set (else a
-    // BullMQ retry writes an unattributed version). Use a db whose execute() runs
-    // the callback THEN throws, simulating a commit abort.
-    pageHistoryRepo.findPageLastHistory.mockResolvedValue({
-      content: { type: 'doc', content: [] },
-    });
-    const commitFail = {
-      transaction: () => ({
-        execute: async (fn: (trx: any) => Promise<any>) => {
-          await fn({ __trx: true }); // callback succeeds (saveHistory ok)
-          throw new Error('commit aborted'); // ...but the COMMIT fails
-        },
-      }),
-    };
-    const procCommitFail = new HistoryProcessor(
-      pageHistoryRepo as any,
-      pageRepo as any,
-      collabHistory as any,
-      watcherService as any,
-      commitFail as any,
-      notificationQueue as any,
-      generalQueue as any,
-    );
-    jest
-      .spyOn(procCommitFail['logger'], 'error')
-      .mockImplementation(() => undefined);
-
-    await expect(procCommitFail.process(buildJob())).rejects.toThrow(
-      'commit aborted',
-    );
-    // The inner catch did NOT run (save succeeded), so only the outer catch can
-    // restore — assert it did.
-    expect(collabHistory.addContributors).toHaveBeenCalledWith(PAGE_ID, [
-      'u1',
-      'u2',
-    ]);
-    // And the post-snapshot queue work must NOT have run (we rethrew).
-    expect(generalQueue.add).not.toHaveBeenCalled();
-  });
-
   it('backlinks + notification queue failures are swallowed (history still committed)', async () => {
     pageHistoryRepo.findPageLastHistory.mockResolvedValue({
       content: { type: 'doc', content: [] },

apps/server/src/collaboration/processors/history.processor.ts

@@ -19,9 +19,6 @@ import { isDeepStrictEqual } from 'node:util';
 import { CollabHistoryService } from '../services/collab-history.service';
 import { WatcherService } from '../../core/watcher/watcher.service';
 import { isEmptyParagraphDoc } from '../collaboration.util';
-import { InjectKysely } from 'nestjs-kysely';
-import { KyselyDB } from '@docmost/db/types/kysely.types';
-import { executeTx } from '@docmost/db/utils';
 
 @Processor(QueueName.HISTORY_QUEUE)
 export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
@@ -32,7 +29,6 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
     private readonly pageRepo: PageRepo,
     private readonly collabHistory: CollabHistoryService,
     private readonly watcherService: WatcherService,
-    @InjectKysely() private readonly db: KyselyDB,
     @InjectQueue(QueueName.NOTIFICATION_QUEUE) private notificationQueue: Queue,
     @InjectQueue(QueueName.GENERAL_QUEUE) private generalQueue: Queue,
   ) {
@@ -45,9 +41,6 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
     try {
       const { pageId } = job.data;
 
-      // Read the page WITHOUT a lock first, only to bail early on the two cheap
-      // no-write cases (page gone / empty first snapshot) without opening a
-      // transaction. The authoritative check-then-write happens locked below.
       const page = await this.pageRepo.findById(pageId, {
         includeContent: true,
       });
@@ -58,109 +51,40 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
         return;
       }
 
-      // #370 F3 — the snapshot decision (findPageLastHistory → saveHistory) must
-      // be serialized against manual-save/boundary writers, which run under a
-      // page-row lock in onStoreDocument. Without it, this processor and a
-      // concurrent manual-save each read the same lastHistory (MVCC), both see
-      // content != lastHistory, and both insert — producing two page_history rows
-      // with IDENTICAL content (one 'idle', one 'manual'), defeating
-      // promote-not-dup and the version-vs-autosave split. Taking the same
-      // page-row lock makes the second writer observe the first's committed row so
-      // the isDeepStrictEqual gate collapses the duplicate. Only the read+write
-      // is transacted; the post-snapshot queue work stays outside.
-      let contributorIds: string[] = [];
-      let snapshotWritten = false;
-      let lastHistoryContent: unknown;
-      // #370 F8 — the contributor set popped from Redis (destructive SPOP) must be
-      // restored if the snapshot does not durably land. The inner try/catch only
-      // covers a throw INSIDE the callback; a COMMIT failure (connection drop,
-      // serialization/deadlock abort on commit — the transient class the epic
-      // already retries) throws OUTSIDE it, rolling the snapshot back while the
-      // pop is already gone. We track the popped set here and restore it in the
-      // outer catch so a BullMQ retry re-attributes the version. addContributors
-      // is an idempotent Redis SADD, so a double-restore is harmless.
-      let poppedForRestore: string[] = [];
+      const lastHistory = await this.pageHistoryRepo.findPageLastHistory(
+        pageId,
+        { includeContent: true },
+      );
 
-      try {
-        await executeTx(this.db, async (trx) => {
-          const lockedPage = await this.pageRepo.findById(pageId, {
-            includeContent: true,
-            withLock: true,
-            trx,
-          });
-          if (!lockedPage) return;
-
-          const lastHistory = await this.pageHistoryRepo.findPageLastHistory(
-            pageId,
-            { includeContent: true, trx },
-          );
-          lastHistoryContent = lastHistory?.content;
-
-          if (!lastHistory && isEmptyParagraphDoc(lockedPage.content as any)) {
-            this.logger.debug(
-              `Skipping first history for page ${pageId}: empty content`,
-            );
-            return;
-          }
-
-          if (
-            lastHistory &&
-            isDeepStrictEqual(lastHistory.content, lockedPage.content)
-          ) {
-            return; // already snapshotted at this content — nothing to write
-          }
-
-          contributorIds = await this.collabHistory.popContributors(pageId);
-          poppedForRestore = contributorIds;
-          try {
-            // Pass `trx` so the watcher insert's FK check (FOR KEY SHARE on
-            // pages[pageId]) runs on the SAME connection that already holds the
-            // FOR UPDATE lock from findById — otherwise it takes the FK lock on a
-            // separate pool connection and self-deadlocks against our own tx.
-            await this.watcherService.addPageWatchers(
-              contributorIds,
-              pageId,
-              lockedPage.spaceId,
-              lockedPage.workspaceId,
-              trx,
-            );
-
-            // #370 — every job on this queue is a trailing idle-flush autosnapshot.
-            await this.pageHistoryRepo.saveHistory(lockedPage, {
-              contributorIds,
-              kind: job.data.kind ?? 'idle',
-              trx,
-            });
-            snapshotWritten = true;
-            this.logger.debug(`History created for page: ${pageId}`);
-          } catch (err) {
-            await this.collabHistory.addContributors(pageId, contributorIds);
-            poppedForRestore = [];
-            throw err;
-          }
-        });
-      } catch (err) {
-        // A throw here means the tx did NOT commit (callback threw, or the commit
-        // itself failed and rolled back). If we popped contributors and the inner
-        // catch did not already restore them, restore now so the retry keeps
-        // attribution. snapshotWritten is irrelevant: it is set before commit, so
-        // it can be true even when the commit rolled the snapshot back.
-        if (poppedForRestore.length) {
-          await this.collabHistory.addContributors(pageId, poppedForRestore);
-        }
-        throw err;
-      }
-
-      // No snapshot written (page vanished / empty-first / unchanged content) →
-      // clear the contributor set for the skip cases and stop.
-      if (!snapshotWritten) {
-        if (!lastHistoryContent && isEmptyParagraphDoc(page.content as any)) {
-          await this.collabHistory.clearContributors(pageId);
-        }
+      if (!lastHistory && isEmptyParagraphDoc(page.content as any)) {
+        this.logger.debug(
+          `Skipping first history for page ${pageId}: empty content`,
+        );
+        await this.collabHistory.clearContributors(pageId);
         return;
       }
 
-      {
+      if (
+        !lastHistory ||
+        !isDeepStrictEqual(lastHistory.content, page.content)
+      ) {
+        const contributorIds = await this.collabHistory.popContributors(pageId);
+
+        try {
+          await this.watcherService.addPageWatchers(
+            contributorIds,
+            pageId,
+            page.spaceId,
+            page.workspaceId,
+          );
+
+          await this.pageHistoryRepo.saveHistory(page, { contributorIds });
+          this.logger.debug(`History created for page: ${pageId}`);
+        } catch (err) {
+          await this.collabHistory.addContributors(pageId, contributorIds);
+          throw err;
+        }
+
         const mentions = extractMentions(page.content);
         const pageMentions = extractPageMentions(mentions);
         const internalLinkSlugIds = extractInternalLinkSlugIds(page.content);
@@ -178,7 +102,7 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
             );
           });
 
-        if (contributorIds.length > 0 && lastHistoryContent) {
+        if (contributorIds.length > 0 && lastHistory?.content) {
           await this.notificationQueue
             .add(QueueJob.PAGE_UPDATED, {
               pageId,

apps/server/src/database/migrations/20260705T120000-page-history-kind.ts

@@ -1,27 +0,0 @@
-import { type Kysely } from 'kysely';
-
-/**
- * #370 — page-versioning intentionality tier on a history snapshot.
- *
- * Adds `page_history.kind`, the three-tier "how intentional was this snapshot"
- * marker that lets versions (intentional points) be told apart from autosaves:
- *   - 'manual'   — a human explicitly saved a version (Cmd+S / Save button)
- *   - 'agent'    — the AI agent explicitly saved a version
- *   - 'idle'     — trailing idle-flush autosnapshot (safety net)
- *   - 'boundary' — autosnapshot pinned on a source transition (user↔agent↔git)
- *
- * Nullable with NO default (mirrors last_updated_source in the agent-provenance
- * migration): legacy rows predate the marker and read back as `null`, which the
- * client renders as a plain autosave. Stored as a short varchar to stay
- * forward-compatible without an enum migration.
- */
-export async function up(db: Kysely<any>): Promise<void> {
-  await db.schema
-    .alterTable('page_history')
-    .addColumn('kind', 'varchar(20)', (col) => col)
-    .execute();
-}
-
-export async function down(db: Kysely<any>): Promise<void> {
-  await db.schema.alterTable('page_history').dropColumn('kind').execute();
-}

apps/server/src/database/repos/page/page-history.repo.ts

@@ -13,7 +13,6 @@ import { jsonArrayFrom, jsonObjectFrom } from 'kysely/helpers/postgres';
 import { ExpressionBuilder, sql } from 'kysely';
 import { DB } from '@docmost/db/types/db';
 import { resolveAgentProvenance } from '../agent-provenance';
-import { PageHistoryKind } from '../../../collaboration/constants';
 
 /**
  * Role-resolution subquery for a page-history row's bound AI chat (#300). Joins
@@ -47,9 +46,6 @@ export class PageHistoryRepo {
     'lastUpdatedById',
     'lastUpdatedSource',
     'lastUpdatedAiChatId',
-    // #370 — intentionality tier ('manual' | 'agent' | 'idle' | 'boundary');
-    // null on legacy rows (= autosave). Selected so callers can read/promote it.
-    'kind',
     'contributorIds',
     'spaceId',
     'workspaceId',
@@ -89,15 +85,9 @@ export class PageHistoryRepo {
 
   async saveHistory(
     page: Page,
-    opts?: {
-      contributorIds?: string[];
-      // #370 — intentionality tier for this snapshot. Omitted → null (legacy
-      // autosave semantics). Callers derive it server-side, never from a client.
-      kind?: PageHistoryKind;
-      trx?: KyselyTransaction;
-    },
-  ): Promise<PageHistory> {
-    return await this.insertPageHistory(
+    opts?: { contributorIds?: string[]; trx?: KyselyTransaction },
+  ): Promise<void> {
+    await this.insertPageHistory(
       {
         pageId: page.id,
         slugId: page.slugId,
@@ -109,7 +99,6 @@ export class PageHistoryRepo {
         // Copy the provenance marker off the page row, as for lastUpdatedById.
         lastUpdatedSource: page.lastUpdatedSource,
         lastUpdatedAiChatId: page.lastUpdatedAiChatId,
-        kind: opts?.kind ?? null,
         contributorIds: opts?.contributorIds,
         spaceId: page.spaceId,
         workspaceId: page.workspaceId,
@@ -118,25 +107,6 @@ export class PageHistoryRepo {
     );
   }
 
-  /**
-   * #370 — promote an existing snapshot's intentionality tier in place. Used by
-   * the manual-save "promote-not-dup" path: when the latest history row already
-   * holds the exact content being versioned, we upgrade its `kind` instead of
-   * duplicating a heavy content row.
-   */
-  async updateHistoryKind(
-    pageHistoryId: string,
-    kind: PageHistoryKind,
-    trx?: KyselyTransaction,
-  ): Promise<void> {
-    const db = dbOrTx(this.db, trx);
-    await db
-      .updateTable('pageHistory')
-      .set({ kind })
-      .where('id', '=', pageHistoryId)
-      .execute();
-  }
-
   async findPageHistoryByPageId(pageId: string, pagination: PaginationOptions) {
     const query = this.db
       .selectFrom('pageHistory')

apps/server/src/database/types/db.d.ts

@@ -280,7 +280,6 @@ export interface PageHistory {
   createdAt: Generated<Timestamp>;
   icon: string | null;
   id: Generated<string>;
-  kind: string | null;
   lastUpdatedAiChatId: string | null;
   lastUpdatedById: string | null;
   lastUpdatedSource: string | null;

apps/server/src/integrations/queue/constants/queue.interface.ts

@@ -20,10 +20,6 @@ export interface IStripeSeatsSyncJob {
 
 export interface IPageHistoryJob {
   pageId: string;
-  // #370 — intentionality tier the worker stamps on the snapshot. All jobs on
-  // this queue are trailing idle-flush autosnapshots, so this is 'idle' (absent
-  // → treated as 'idle' by the processor).
-  kind?: 'idle';
 }
 
 /**

pnpm-lock.yaml

@@ -272,6 +272,9 @@ importers:
       '@atlaskit/pragmatic-drag-and-drop-live-region':
         specifier: 1.3.4
         version: 1.3.4
+      '@braintree/sanitize-url':
+        specifier: 7.1.2
+        version: 7.1.2
       '@casl/react':
         specifier: 5.0.1
         version: 5.0.1(@casl/ability@6.8.0)(react@18.3.1)