fix(mobile): harden iPadOS 26.5 paths against Fabric/WebView crashes

Detail preview now uses static HTML WebView instead of Dom TipTap. Stagger
TextInput and editor host mount/teardown for edit, Me, create, and back so
Fabric ShadowNode measure and Hermes GC no longer SIGSEGV on iPadOS 26.5.

apps/mobile/app.json

@@ -18,10 +18,10 @@
     "icon": "./assets/icon.png",
     "orientation": "default",
     "userInterfaceStyle": "light",
-    "newArchEnabled": true,
+    "newArchEnabled": false,
     "ios": {
       "bundleIdentifier": "org.edgeever.mobile",
-      "supportsTablet": false,
+      "supportsTablet": true,
       "config": {
         "usesNonExemptEncryption": false
       },

apps/mobile/package.json

@@ -40,6 +40,7 @@
     "expo-sqlite": "~57.0.1",
     "expo-status-bar": "latest",
     "expo-updates": "~57.0.8",
+    "markdown-it": "10.0.0",
     "mermaid": "^11.16.0",
     "react": "19.2.3",
     "react-dom": "19.2.3",
@@ -56,6 +57,7 @@
     "semver": "^7.8.5"
   },
   "devDependencies": {
+    "@types/markdown-it": "^14.1.2",
     "@types/react": "latest",
     "@types/semver": "^7.7.1",
     "babel-preset-expo": "latest",

apps/mobile/src/components/LocalizedText.tsx

@@ -1,16 +1,31 @@
 import { Children, forwardRef, isValidElement, type ComponentRef, type ReactNode } from "react";
 import {
   Alert as NativeAlert,
+  Platform,
   Pressable as NativePressable,
+  StyleSheet,
   Text as NativeText,
   TextInput as NativeTextInput,
   type PressableProps,
   type TextInputProps,
   type TextProps,
+  type TextStyle,
 } from "react-native";
 import { translateCurrentMobileText, useMobileLocale } from "../lib/mobile-locale";
 import { presentAppDialog } from "./app-dialog-controller";
 
+/**
+ * iPadOS 26.5 + Fabric: measuring TextInput with the variable system font
+ * (UIFont systemFontOfSize:weight: → CopyVariationAxes) can SIGSEGV. Force a
+ * non-variable UIKit face and drop weight so layout never hits that path.
+ */
+const IOS_SAFE_TEXT_INPUT_STYLE: TextStyle = Platform.OS === "ios"
+  ? {
+      fontFamily: "Helvetica",
+      fontWeight: "400",
+    }
+  : {};
+
 const translateChildren = (children: ReactNode, translate: (value: string) => string): ReactNode =>
   Children.map(children, (child) => {
     if (typeof child === "string") {
@@ -38,15 +53,22 @@ export const Text = forwardRef<ComponentRef<typeof NativeText>, TextProps>(({ ch
 
 Text.displayName = "LocalizedText";
 
-export const TextInput = forwardRef<ComponentRef<typeof NativeTextInput>, TextInputProps>(({ accessibilityHint, accessibilityLabel, placeholder, ...props }, ref) => {
+export const TextInput = forwardRef<ComponentRef<typeof NativeTextInput>, TextInputProps>(({ accessibilityHint, accessibilityLabel, placeholder, value, defaultValue, style, ...props }, ref) => {
   const { translate } = useMobileLocale();
+  // Fabric TextInput measure on iPadOS 26.5 corrupts when value is non-string.
+  const safeValue = value === undefined || value === null ? value : String(value);
+  const safeDefault = defaultValue === undefined || defaultValue === null ? defaultValue : String(defaultValue);
   return (
     <NativeTextInput
       {...props}
       accessibilityHint={typeof accessibilityHint === "string" ? translate(accessibilityHint) : accessibilityHint}
       accessibilityLabel={typeof accessibilityLabel === "string" ? translate(accessibilityLabel) : accessibilityLabel}
+      defaultValue={safeDefault}
       placeholder={placeholder ? translate(placeholder) : placeholder}
       ref={ref}
+      // Safe face last so callers cannot reintroduce variable system-font weights.
+      style={style ? StyleSheet.flatten([style, IOS_SAFE_TEXT_INPUT_STYLE]) : IOS_SAFE_TEXT_INPUT_STYLE}
+      value={safeValue}
     />
   );
 });

apps/mobile/src/lib/mobile-markdown-html.ts

@@ -0,0 +1,175 @@
+import MarkdownIt from "markdown-it";
+
+const markdown = new MarkdownIt({
+  breaks: false,
+  html: false,
+  linkify: true,
+  typographer: false,
+});
+
+const lightCss = `
+  :root {
+    color-scheme: light;
+    --bg: #ffffff;
+    --fg: #0f172a;
+    --muted: #64748b;
+    --border: #dedede;
+    --th-bg: #f2f2f2;
+    --quote-bg: #f8fafc;
+    --quote-border: #94a3b8;
+    --code-bg: #f1f5f9;
+    --code-fg: #334155;
+    --pre-bg: #0f172a;
+    --pre-fg: #e2e8f0;
+    --link: #059669;
+    --hr: #e2e8f0;
+  }
+`;
+
+const darkCss = `
+  :root {
+    color-scheme: dark;
+    --bg: #0f172a;
+    --fg: #f8fafc;
+    --muted: #94a3b8;
+    --border: #334155;
+    --th-bg: #1e293b;
+    --quote-bg: #1e293b;
+    --quote-border: #64748b;
+    --code-bg: #1e293b;
+    --code-fg: #e2e8f0;
+    --pre-bg: #020617;
+    --pre-fg: #e2e8f0;
+    --link: #6ee7b7;
+    --hr: #334155;
+  }
+`;
+
+const sharedCss = `
+  * { box-sizing: border-box; }
+  html, body {
+    margin: 0;
+    padding: 0;
+    background: var(--bg);
+    color: var(--fg);
+    font: 400 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+    -webkit-text-size-adjust: 100%;
+    word-wrap: break-word;
+  }
+  body { padding: 4px 2px 48px; }
+  h1, h2, h3, h4, h5, h6 {
+    line-height: 1.3;
+    margin: 1.1em 0 0.45em;
+    font-weight: 800;
+  }
+  h1 { font-size: 1.6rem; }
+  h2 { font-size: 1.3rem; }
+  h3 { font-size: 1.12rem; }
+  h4, h5, h6 { font-size: 1rem; }
+  p { margin: 0 0 0.85em; }
+  strong { font-weight: 800; }
+  em { font-style: italic; }
+  a { color: var(--link); text-decoration: none; }
+  blockquote {
+    margin: 0.8em 0;
+    padding: 0.55em 0.9em;
+    border-left: 3px solid var(--quote-border);
+    background: var(--quote-bg);
+    color: var(--fg);
+  }
+  blockquote p:last-child { margin-bottom: 0; }
+  ul, ol { margin: 0.5em 0 0.9em; padding-left: 1.4em; }
+  li { margin: 0.25em 0; }
+  hr {
+    border: 0;
+    border-top: 1px solid var(--hr);
+    margin: 1.1em 0;
+  }
+  code {
+    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
+    font-size: 0.92em;
+    background: var(--code-bg);
+    color: var(--code-fg);
+    border-radius: 4px;
+    padding: 0.1em 0.35em;
+  }
+  pre {
+    background: var(--pre-bg);
+    color: var(--pre-fg);
+    border-radius: 8px;
+    padding: 12px;
+    overflow-x: auto;
+    margin: 0.8em 0;
+  }
+  pre code {
+    background: transparent;
+    color: inherit;
+    padding: 0;
+    font-size: 0.88em;
+  }
+  table {
+    border-collapse: collapse;
+    width: 100%;
+    margin: 0.8em 0 1em;
+    font-size: 0.95em;
+  }
+  th, td {
+    border: 1px solid var(--border);
+    padding: 0.45em 0.65em;
+    text-align: left;
+    vertical-align: top;
+  }
+  th {
+    background: var(--th-bg);
+    font-weight: 700;
+  }
+  img {
+    max-width: 100%;
+    height: auto;
+    border-radius: 8px;
+  }
+`;
+
+const escapeHtml = (value: string) =>
+  value
+    .replace(/&/g, "&")
+    .replace(/</g, "&lt;")
+    .replace(/>/g, "&gt;")
+    .replace(/"/g, "&quot;");
+
+/** Render note markdown to a self-contained HTML document for a static WebView (JS off). */
+export const buildMemoDetailHtml = (
+  markdownSource: string,
+  theme: "light" | "dark" = "light",
+  meta?: { notebookName?: string; tags?: string[]; title?: string }
+): string => {
+  const body = markdown.render(markdownSource || "");
+  const title = meta?.title?.trim() ? `<h1 class="note-title">${escapeHtml(meta.title.trim())}</h1>` : "";
+  const notebook = meta?.notebookName
+    ? `<div class="note-meta"><span class="note-notebook">${escapeHtml(meta.notebookName)}</span>${
+      meta.tags?.length
+        ? `<span class="note-tags">${escapeHtml(meta.tags.join(", "))}</span>`
+        : ""
+    }</div><hr class="note-divider" />`
+    : "";
+  const metaCss = `
+    h1.note-title { font-size: 1.55rem; margin: 0 0 0.55em; }
+    .note-meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; color: var(--muted); font-size: 0.92rem; margin-bottom: 0.75em; }
+    .note-notebook { font-weight: 600; }
+    .note-tags { opacity: 0.9; }
+    hr.note-divider { margin: 0.4em 0 1em; }
+  `;
+  return `<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
+  <style>
+    ${theme === "dark" ? darkCss : lightCss}
+    ${sharedCss}
+    ${metaCss}
+  </style>
+</head>
+<body>${title}${notebook}${body}</body>
+</html>`;
+};

apps/mobile/src/screens/WorkspaceMemoDetail.tsx

@@ -1,277 +1,29 @@
-import { useCallback, useEffect, useMemo, useRef, useState, type ReactNode } from "react";
-import { resolveMemoContentDoc, type MemoDetail, type TiptapDoc } from "@edgeever/shared";
-import { ActivityIndicator, Image as RNImage, Platform, StyleSheet, View, type ImageStyle, type StyleProp } from "react-native";
+import { useCallback, useEffect, useMemo, useState, type ReactNode } from "react";
+import { resolveMemoContentMarkdown, type MemoDetail } from "@edgeever/shared";
+import { ActivityIndicator, Platform, StyleSheet, View } from "react-native";
 import { Modal } from "react-native";
 import { SafeAreaView, useSafeAreaInsets } from "react-native-safe-area-context";
-import { SvgXml } from "react-native-svg";
-import { ChevronDown, ChevronLeft, ChevronRight, History, MoreHorizontal, Pencil, RotateCcw, Search, Share2, Tag, Trash2, X } from "../components/icons";
+import { WebView } from "react-native-webview";
+import { ChevronLeft, ChevronRight, History, MoreHorizontal, Pencil, RotateCcw, Search, Share2, Trash2, X } from "../components/icons";
 import { Alert, Pressable, Text, TextInput } from "../components/LocalizedText";
-import LocalTiptapEditor, { type LocalTiptapEditorRef } from "../components/LocalTiptapEditor";
 import { MobileResourceActions } from "../components/MobileResourceActions";
-import { SAFE_DOM_WEBVIEW_PROPS } from "../lib/mobile-dom";
 import {
   openMobileResource,
-  parseMobileResourceTargetJson,
   saveMobileResourceAs,
   type MobileResourceTarget,
 } from "../lib/mobile-attachments";
+import { SAFE_DOM_WEBVIEW_PROPS } from "../lib/mobile-dom";
+import { buildMemoDetailHtml } from "../lib/mobile-markdown-html";
 import { useMobileLocale } from "../lib/mobile-locale";
 import { useMobileTheme } from "../lib/mobile-theme";
 import { useSession } from "../lib/session";
 import { beginEditorStartup } from "../lib/startup-performance";
 import type { MobileSyncQueueItem } from "../lib/sync-queue";
+import { getTextSearchMatches } from "./workspace-utils";
 import { styles } from "./workspace-styles";
 
 const ANDROID_SYSTEM_NAVIGATION_FALLBACK = 48;
 const DEFAULT_MEMO_TITLE = "无标题笔记";
-const RESOURCE_DATA_URL_CACHE_LIMIT = 32;
-
-type SessionLike = { baseUrl: string; token: string } | null;
-type AuthenticatedImageSource = {
-  headers?: { Authorization: string };
-  uri: string;
-};
-
-const isProtectedResourceSource = (source: string, session: SessionLike) => {
-  const baseUrl = session?.baseUrl.replace(/\/+$/, "") ?? "";
-  return source.startsWith("/api/v1/resources/")
-    || Boolean(baseUrl && (source.startsWith(`${baseUrl}/api/v1/resources/`) || source.startsWith("/api/v1/resources/")));
-};
-
-/** Ensure protected resource URLs hit the blob route the API serves. */
-const normalizeProtectedResourcePath = (source: string, session: SessionLike) => {
-  const baseUrl = session?.baseUrl.replace(/\/+$/, "") ?? "";
-  let path = source;
-  if (baseUrl && path.startsWith(`${baseUrl}/`)) {
-    path = path.slice(baseUrl.length);
-  }
-  if (!path.startsWith("/api/v1/resources/")) {
-    return path;
-  }
-  if (/\/blob(?:$|[?#])/.test(path)) {
-    return path;
-  }
-  const match = path.match(/^(\/api\/v1\/resources\/[^/?#]+)/);
-  return match ? `${match[1]}/blob` : path;
-};
-
-const getAuthenticatedResourceSource = (
-  source: string,
-  session: SessionLike
-): AuthenticatedImageSource => {
-  const baseUrl = session?.baseUrl.replace(/\/+$/, "") ?? "";
-  const uri = source.startsWith("/") && baseUrl ? `${baseUrl}${source}` : source;
-  const isProtectedResource = isProtectedResourceSource(source, session)
-    || Boolean(baseUrl && uri.startsWith(`${baseUrl}/api/v1/resources/`));
-
-  return {
-    uri,
-    ...(session?.token && isProtectedResource ? { headers: { Authorization: `Bearer ${session.token}` } } : {}),
-  };
-};
-
-const blobToDataUrl = (blob: Blob) => new Promise<string>((resolve, reject) => {
-  const reader = new FileReader();
-  reader.onerror = () => reject(reader.error ?? new Error("资源读取失败"));
-  reader.onloadend = () => {
-    if (typeof reader.result === "string") {
-      resolve(reader.result);
-      return;
-    }
-    reject(new Error("资源读取失败"));
-  };
-  reader.readAsDataURL(blob);
-});
-
-const resourceDataUrlCache = new Map<string, Promise<string | null>>();
-const loadProtectedResourceDataUrl = (
-  source: string,
-  session: SessionLike,
-  getResourceBlob: ((resourceUrl: string) => Promise<Blob>) | null | undefined
-) => {
-  if (!getResourceBlob || !isProtectedResourceSource(source, session)) {
-    return Promise.resolve(null);
-  }
-  const path = normalizeProtectedResourcePath(source, session);
-  const cacheKey = `${session?.token ?? ""}\n${path}`;
-  const cached = resourceDataUrlCache.get(cacheKey);
-  if (cached) {
-    return cached;
-  }
-  if (resourceDataUrlCache.size >= RESOURCE_DATA_URL_CACHE_LIMIT) {
-    const oldestKey = resourceDataUrlCache.keys().next().value;
-    if (oldestKey) {
-      resourceDataUrlCache.delete(oldestKey);
-    }
-  }
-  const pending = getResourceBlob(path)
-    .then(blobToDataUrl)
-    .catch(() => {
-      resourceDataUrlCache.delete(cacheKey);
-      return null;
-    });
-  resourceDataUrlCache.set(cacheKey, pending);
-  return pending;
-};
-
-type CachedSvgResource = {
-  aspectRatio: number | null;
-  xml: string;
-};
-
-const AUTHENTICATED_SVG_CACHE_LIMIT = 24;
-const authenticatedSvgCache = new Map<string, Promise<CachedSvgResource | null>>();
-const getAuthenticatedSvgCacheKey = (source: AuthenticatedImageSource) =>
-  `${source.uri}\n${source.headers?.Authorization ?? ""}`;
-const loadAuthenticatedSvg = (source: AuthenticatedImageSource) => {
-  const cacheKey = getAuthenticatedSvgCacheKey(source);
-  const cached = authenticatedSvgCache.get(cacheKey);
-  if (cached) {
-    return cached;
-  }
-  if (authenticatedSvgCache.size >= AUTHENTICATED_SVG_CACHE_LIMIT) {
-    const oldestKey = authenticatedSvgCache.keys().next().value;
-    if (oldestKey) {
-      authenticatedSvgCache.delete(oldestKey);
-    }
-  }
-  const pending = fetch(source.uri, { headers: source.headers })
-    .then(async (response) => {
-      if (!response.ok) {
-        throw new Error(`Resource request failed with ${response.status}`);
-      }
-      if (!response.headers.get("Content-Type")?.toLowerCase().includes("svg")) {
-        return null;
-      }
-      const xml = await response.text();
-      const viewBox = xml.match(/viewBox=["']\s*[\d.-]+\s+[\d.-]+\s+([\d.]+)\s+([\d.]+)\s*["']/i);
-      const width = Number(viewBox?.[1]);
-      const height = Number(viewBox?.[2]);
-      return {
-        aspectRatio: width > 0 && height > 0 ? width / height : null,
-        xml,
-      };
-    })
-    .catch(() => {
-      authenticatedSvgCache.delete(cacheKey);
-      return null;
-    });
-  authenticatedSvgCache.set(cacheKey, pending);
-  return pending;
-};
-
-const AuthenticatedResourceImage = ({
-  alt,
-  fitAspect = false,
-  href,
-  loadResourceBlob,
-  resizeMode = "cover",
-  session,
-  style,
-}: {
-  alt: string;
-  fitAspect?: boolean;
-  href: string;
-  loadResourceBlob?: ((resourceUrl: string) => Promise<Blob>) | null;
-  resizeMode?: "center" | "contain" | "cover" | "repeat" | "stretch";
-  session: SessionLike;
-  style: StyleProp<ImageStyle>;
-}) => {
-  const headerSource = useMemo(() => getAuthenticatedResourceSource(href, session), [href, session]);
-  const [displaySource, setDisplaySource] = useState<AuthenticatedImageSource>(headerSource);
-  const [aspectRatio, setAspectRatio] = useState(16 / 9);
-  const [svgXml, setSvgXml] = useState<string | null>(null);
-  const svgRequestStartedRef = useRef(false);
-  const svgSourceKeyRef = useRef("");
-  const svgSourceKey = getAuthenticatedSvgCacheKey(displaySource);
-  const imageStyle = fitAspect ? [style, { aspectRatio, height: undefined, width: "100%" as const }] : style;
-
-  useEffect(() => {
-    let cancelled = false;
-    setSvgXml(null);
-    setAspectRatio(16 / 9);
-    svgRequestStartedRef.current = false;
-    setDisplaySource(headerSource);
-
-    void loadProtectedResourceDataUrl(href, session, loadResourceBlob).then((dataUrl) => {
-      if (cancelled || !dataUrl) {
-        return;
-      }
-      setDisplaySource({ uri: dataUrl });
-    });
-
-    return () => {
-      cancelled = true;
-    };
-  }, [headerSource, href, loadResourceBlob, session]);
-
-  useEffect(() => {
-    svgSourceKeyRef.current = svgSourceKey;
-    const cached = authenticatedSvgCache.get(svgSourceKey);
-    if (cached) {
-      svgRequestStartedRef.current = true;
-      void cached.then((result) => {
-        if (!result || svgSourceKeyRef.current !== svgSourceKey) {
-          return;
-        }
-        if (result.aspectRatio) {
-          setAspectRatio(result.aspectRatio);
-        }
-        setSvgXml(result.xml);
-      });
-    }
-    return () => {
-      if (svgSourceKeyRef.current === svgSourceKey) {
-        svgSourceKeyRef.current = "";
-      }
-    };
-  }, [svgSourceKey]);
-
-  const loadSvgFallback = () => {
-    if (svgRequestStartedRef.current) {
-      return;
-    }
-    svgRequestStartedRef.current = true;
-    void loadAuthenticatedSvg(displaySource)
-      .then((result) => {
-        if (!result || svgSourceKeyRef.current !== svgSourceKey) {
-          return;
-        }
-        if (result.aspectRatio) {
-          setAspectRatio(result.aspectRatio);
-        }
-        setSvgXml(result.xml);
-      });
-  };
-
-  if (svgXml) {
-    return (
-      <View accessibilityLabel={alt || undefined} accessible={Boolean(alt)} style={imageStyle}>
-        <SvgXml height="100%" width="100%" xml={svgXml} />
-      </View>
-    );
-  }
-
-  return (
-    <RNImage
-      accessibilityLabel={alt || undefined}
-      accessible={Boolean(alt)}
-      fadeDuration={Platform.OS === "android" ? 0 : undefined}
-      onLoad={(event) => {
-        const { height, width } = event.nativeEvent.source;
-        if (height > 0 && width > 0) {
-          setAspectRatio(width / height);
-        }
-      }}
-      onError={loadSvgFallback}
-      resizeMethod={Platform.OS === "android" ? "resize" : "auto"}
-      resizeMode={resizeMode}
-      source={displaySource}
-      style={imageStyle}
-    />
-  );
-};
-
 
 const DetailActionSheetItem = ({ danger = false, disabled = false, icon, label, onPress }: { danger?: boolean; disabled?: boolean; icon: ReactNode; label: string; onPress: () => void }) => (
   <Pressable accessibilityRole="button" disabled={disabled} onPress={onPress} style={[styles.actionSheetItem, disabled && styles.buttonDisabled]}>
@@ -330,27 +82,16 @@ export const MemoDetailModal = ({
   syncStatus: MobileSyncQueueItem["status"] | null;
   visible: boolean;
 }) => {
-  const { client, session } = useSession();
+  const { client } = useSession();
   const { resolvedTheme } = useMobileTheme();
   const { resolvedLocale } = useMobileLocale();
   const safeAreaInsets = useSafeAreaInsets();
   const [actionsOpen, setActionsOpen] = useState(false);
   const [searchOpen, setSearchOpen] = useState(false);
   const [searchQuery, setSearchQuery] = useState("");
-  const [searchMatchCount, setSearchMatchCount] = useState(0);
   const [activeMatchIndex, setActiveMatchIndex] = useState(0);
-  const [imagePreview, setImagePreview] = useState<{ alt: string; source: string } | null>(null);
   const [resourceTarget, setResourceTarget] = useState<MobileResourceTarget | null>(null);
-  const [viewerReady, setViewerReady] = useState(false);
-  const viewerRef = useRef<LocalTiptapEditorRef>(null);
-  const resourceDataUrlCacheRef = useRef(new Map<string, Promise<string | null>>());
-
-  const baseUrl = session?.baseUrl.replace(/\/+$/, "") ?? "";
-  const viewerContent = useMemo<TiptapDoc>(
-    () => (memo ? resolveMemoContentDoc(memo.contentJson, memo.contentMarkdown) : { type: "doc", content: [{ type: "paragraph" }] }),
-    [memo]
-  );
-
+  const [bodyReady, setBodyReady] = useState(false);
   const downloadResource = useCallback(async (target: MobileResourceTarget) => {
     if (!client) throw new Error(resolvedLocale === "en-US" ? "The resource client is unavailable." : "当前无法读取资源。");
     try {
@@ -374,44 +115,31 @@ export const MemoDetailModal = ({
     }
   }, [client, resolvedLocale]);
 
-  const loadViewerResource = useCallback((source: string) => {
-    if (!client) {
-      return Promise.resolve(null);
+  // HTML in a JS-disabled WebView: full markdown (tables/bold/etc.) without Fabric
+  // ParagraphShadowNode / AttributedString measure crashes on iPadOS 26.5.
+  // Not Expo Dom TipTap — static HTML only + media capture denied.
+  const detailText = memo
+    ? resolveMemoContentMarkdown(memo.contentJson, memo.contentMarkdown) || memo.contentText || "没有正文内容"
+    : "没有正文内容";
+  const detailHtml = useMemo(
+    () => buildMemoDetailHtml(detailText, resolvedTheme, {
+      notebookName,
+      tags: memo?.tags,
+      title: memo?.title?.trim() || DEFAULT_MEMO_TITLE,
+    }),
+    [detailText, memo?.tags, memo?.title, notebookName, resolvedTheme]
+  );
+  const searchMatches = useMemo(() => getTextSearchMatches(detailText, searchQuery), [detailText, searchQuery]);
+  // Unmount WebView as soon as the modal hides so teardown does not race Me tab layout.
+  const showBodyWebView = Boolean(visible && memo && !isLoading);
+  // Close search host when leaving the memo so no TextInput is measured during dismiss.
+  useEffect(() => {
+    if (!visible) {
+      setSearchOpen(false);
+      setSearchQuery("");
     }
-    const path = normalizeProtectedResourcePath(source, session);
-    const cached = resourceDataUrlCacheRef.current.get(path);
-    if (cached) {
-      return cached;
-    }
-    const pending = client.getResourceBlob(path).then(blobToDataUrl).catch(() => null);
-    resourceDataUrlCacheRef.current.set(path, pending);
-    return pending;
-  }, [client, session]);
-
-  const onResourcePress = useCallback(async (targetJson: string) => {
-    const target = parseMobileResourceTargetJson(targetJson);
-    if (target) {
-      setResourceTarget(target);
-    }
-  }, []);
-
-  const onImagePreview = useCallback(async (payloadJson: string) => {
-    try {
-      const parsed = JSON.parse(payloadJson) as { alt?: unknown; source?: unknown };
-      if (typeof parsed.source === "string" && parsed.source) {
-        setImagePreview({
-          alt: typeof parsed.alt === "string" ? parsed.alt : "",
-          source: parsed.source,
-        });
-      }
-    } catch {
-      // Ignore malformed bridge payloads.
-    }
-  }, []);
-
-  const searchMatchLabel = searchQuery.trim()
-    ? `${searchMatchCount > 0 ? activeMatchIndex + 1 : 0}/${searchMatchCount}`
-    : "0/0";
+  }, [visible]);
+  const searchMatchLabel = searchQuery.trim() ? `${searchMatches.length > 0 ? activeMatchIndex + 1 : 0}/${searchMatches.length}` : "0/0";
   const syncStatusLabel = isSaving || syncStatus === "syncing"
     ? "保存中"
     : syncStatus === "conflict"
@@ -427,28 +155,19 @@ export const MemoDetailModal = ({
   ) + 16;
 
   useEffect(() => {
-    setViewerReady(false);
-    setSearchOpen(false);
-    setSearchQuery("");
-    setSearchMatchCount(0);
     setActiveMatchIndex(0);
-    setImagePreview(null);
-    setResourceTarget(null);
-    resourceDataUrlCacheRef.current.clear();
-  }, [memo?.id]);
+  }, [detailText, searchQuery]);
 
   useEffect(() => {
-    if (!viewerReady || !searchOpen) {
-      return;
-    }
-    viewerRef.current?.search(searchQuery, activeMatchIndex);
-  }, [activeMatchIndex, searchOpen, searchQuery, viewerReady]);
+    setBodyReady(false);
+  }, [memo?.id]);
 
   const moveSearchMatch = (direction: 1 | -1) => {
-    if (searchMatchCount === 0) {
+    if (searchMatches.length === 0) {
       return;
     }
-    setActiveMatchIndex((current) => (current + direction + searchMatchCount) % searchMatchCount);
+
+    setActiveMatchIndex((current) => (current + direction + searchMatches.length) % searchMatches.length);
   };
 
   const closeActionsAndRun = (action: () => void) => {
@@ -556,106 +275,61 @@ export const MemoDetailModal = ({
             <ActivityIndicator color="#0f172a" />
           </View>
         ) : memo ? (
-          <View style={detailLayoutStyles.body}>
-            <View style={detailLayoutStyles.meta}>
-              <Text selectable style={styles.detailTitle}>{memo.title?.trim() || DEFAULT_MEMO_TITLE}</Text>
-              <View style={styles.detailMetaRow}>
-                <View style={styles.detailNotebookButton}>
-                  <Text numberOfLines={1} selectable style={styles.detailNotebookName}>{notebookName}</Text>
-                  <ChevronDown color="#94a3b8" size={14} />
+          <View style={detailBodyStyles.container}>
+            {searchOpen ? (
+              <View style={[styles.noteSearchPanel, detailBodyStyles.searchPanel]}>
+                <View style={styles.searchBox}>
+                  <Search color="#64748b" size={18} />
+                  <TextInput
+                    accessibilityLabel="在当前笔记内搜索"
+                    autoCapitalize="none"
+                    autoCorrect={false}
+                    onChangeText={setSearchQuery}
+                    placeholder="在当前笔记内搜索"
+                    placeholderTextColor="#94a3b8"
+                    style={styles.searchInput}
+                    value={searchQuery}
+                  />
+                  <Text style={[styles.noteSearchCount, searchQuery.trim() && searchMatches.length === 0 && styles.noteSearchCountEmpty]}>{searchMatchLabel}</Text>
                 </View>
-                <View style={styles.detailTagsGroup}>
-                  <Tag color="#64748b" size={16} />
-                  <Text
-                    numberOfLines={1}
-                    selectable
-                    style={[styles.detailTagsInline, memo.tags.length === 0 && styles.detailTagsPlaceholder]}
-                  >
-                    {memo.tags.length ? memo.tags.join(", ") : "添加标签，用逗号分隔"}
-                  </Text>
+                <View style={styles.richEditorSearchActions}>
+                  <DetailActionButton disabled={searchMatches.length === 0} label="上一个搜索结果" onPress={() => moveSearchMatch(-1)}>
+                    <ChevronLeft color={searchMatches.length === 0 ? "#cbd5e1" : "#0f172a"} size={16} />
+                  </DetailActionButton>
+                  <DetailActionButton disabled={searchMatches.length === 0} label="下一个搜索结果" onPress={() => moveSearchMatch(1)}>
+                    <ChevronRight color={searchMatches.length === 0 ? "#cbd5e1" : "#0f172a"} size={16} />
+                  </DetailActionButton>
+                  <DetailActionButton label="关闭搜索" onPress={() => {
+                    setSearchOpen(false);
+                    setSearchQuery("");
+                  }}>
+                    <X color="#0f172a" size={16} />
+                  </DetailActionButton>
                 </View>
               </View>
-              {searchOpen ? (
-                <View style={styles.noteSearchPanel}>
-                  <View style={styles.searchBox}>
-                    <Search color="#64748b" size={18} />
-                    <TextInput
-                      accessibilityLabel="在当前笔记内搜索"
-                      autoCapitalize="none"
-                      autoCorrect={false}
-                      onChangeText={(value) => {
-                        setSearchQuery(value);
-                        setActiveMatchIndex(0);
-                      }}
-                      placeholder="在当前笔记内搜索"
-                      placeholderTextColor="#94a3b8"
-                      style={styles.searchInput}
-                      value={searchQuery}
-                    />
-                    <Text style={[styles.noteSearchCount, searchQuery.trim() && searchMatchCount === 0 && styles.noteSearchCountEmpty]}>{searchMatchLabel}</Text>
-                  </View>
-                  <View style={styles.richEditorSearchActions}>
-                    <DetailActionButton disabled={searchMatchCount === 0} label="上一个搜索结果" onPress={() => moveSearchMatch(-1)}>
-                      <ChevronLeft color={searchMatchCount === 0 ? "#cbd5e1" : "#0f172a"} size={16} />
-                    </DetailActionButton>
-                    <DetailActionButton disabled={searchMatchCount === 0} label="下一个搜索结果" onPress={() => moveSearchMatch(1)}>
-                      <ChevronRight color={searchMatchCount === 0 ? "#cbd5e1" : "#0f172a"} size={16} />
-                    </DetailActionButton>
-                    <DetailActionButton label="关闭搜索" onPress={() => {
-                      setSearchOpen(false);
-                      setSearchQuery("");
-                      setSearchMatchCount(0);
-                      setActiveMatchIndex(0);
-                      viewerRef.current?.search("", 0);
-                    }}>
-                      <X color="#0f172a" size={16} />
-                    </DetailActionButton>
-                  </View>
-                </View>
-              ) : null}
-              <View style={styles.detailDivider} />
-            </View>
-            {baseUrl ? (
-              <LocalTiptapEditor
-                key={memo.id}
-                baseUrl={baseUrl}
-                content={viewerContent}
-                dom={{
-                  ...SAFE_DOM_WEBVIEW_PROPS,
-                  bounces: true,
-                  contentInsetAdjustmentBehavior: "never",
-                  overScrollMode: "never",
-                  scrollEnabled: false,
-                  style: [
-                    detailLayoutStyles.viewer,
-                    resolvedTheme === "dark" ? detailLayoutStyles.viewerDark : null,
-                  ],
-                }}
-                locale={resolvedLocale}
-                mode="viewer"
-                onImagePreview={onImagePreview}
-                onLoadResource={loadViewerResource}
-                onReady={async () => {
-                  setViewerReady(true);
-                }}
-                onResourcePress={onResourcePress}
-                onSearchResult={async (count, index) => {
-                  setSearchMatchCount(count);
-                  setActiveMatchIndex(count > 0 ? index : 0);
-                }}
-                ref={viewerRef}
-                theme={resolvedTheme}
-              />
-            ) : (
-              <View style={styles.centerState}>
-                <Text style={styles.errorText}>{resolvedLocale === "en-US" ? "Not signed in." : "未登录。"}</Text>
-              </View>
-            )}
-            {!viewerReady ? (
-              <View pointerEvents="none" style={detailLayoutStyles.viewerLoading}>
-                <ActivityIndicator color="#0f172a" />
-              </View>
             ) : null}
+            <View style={[detailBodyStyles.webHost, resolvedTheme === "dark" ? detailBodyStyles.webHostDark : null]}>
+              {showBodyWebView ? (
+                <WebView
+                  key={memo.id}
+                  {...SAFE_DOM_WEBVIEW_PROPS}
+                  allowsLinkPreview={false}
+                  // Static HTML only — no JS reduces hang/TCC surface vs Dom TipTap.
+                  domStorageEnabled={false}
+                  javaScriptEnabled={false}
+                  onLoadEnd={() => setBodyReady(true)}
+                  originWhitelist={["*"]}
+                  setSupportMultipleWindows={false}
+                  source={{ html: detailHtml }}
+                  style={[detailBodyStyles.webView, !bodyReady && detailBodyStyles.webViewHidden]}
+                />
+              ) : null}
+              {bodyReady ? null : (
+                <View pointerEvents="none" style={detailBodyStyles.loadingOverlay}>
+                  <ActivityIndicator color="#0f172a" />
+                </View>
+              )}
+            </View>
           </View>
         ) : (
           <View style={styles.centerState}>
@@ -692,28 +366,6 @@ export const MemoDetailModal = ({
             </Pressable>
           </Modal>
         ) : null}
-        <Modal animationType="fade" onRequestClose={() => setImagePreview(null)} transparent visible={Boolean(imagePreview)}>
-          <View style={resourceImageStyles.previewBackdrop}>
-            {imagePreview ? (
-              <AuthenticatedResourceImage
-                alt={imagePreview.alt}
-                href={imagePreview.source}
-                loadResourceBlob={client?.getResourceBlob}
-                resizeMode="contain"
-                session={session}
-                style={resourceImageStyles.previewImage}
-              />
-            ) : null}
-            <Pressable
-              accessibilityLabel={resolvedLocale === "en-US" ? "Close image preview" : "关闭图片预览"}
-              accessibilityRole="button"
-              onPress={() => setImagePreview(null)}
-              style={resourceImageStyles.previewClose}
-            >
-              <X color="#ffffff" size={24} />
-            </Pressable>
-          </View>
-        </Modal>
         <MobileResourceActions
           canMutate={Boolean(memo && !memo.isDeleted && !memo.id.startsWith("local:"))}
           onClose={() => setResourceTarget(null)}
@@ -734,54 +386,35 @@ export const MemoDetailModal = ({
   );
 };
 
-const detailLayoutStyles = StyleSheet.create({
-  body: {
+const detailBodyStyles = StyleSheet.create({
+  container: {
     flex: 1,
     minHeight: 0,
   },
-  meta: {
-    paddingBottom: 0,
-    paddingHorizontal: 16,
-    paddingTop: 16,
+  loadingOverlay: {
+    ...StyleSheet.absoluteFill,
+    alignItems: "center",
+    backgroundColor: "rgba(255,255,255,0.72)",
+    justifyContent: "center",
   },
-  viewer: {
+  searchPanel: {
+    marginHorizontal: 16,
+    marginTop: 8,
+  },
+  webHost: {
     backgroundColor: "#ffffff",
     flex: 1,
     minHeight: 0,
   },
-  viewerDark: {
+  webHostDark: {
     backgroundColor: "#0f172a",
   },
-  viewerLoading: {
-    ...StyleSheet.absoluteFill,
-    alignItems: "center",
-    backgroundColor: "rgba(248,250,252,0.72)",
-    justifyContent: "center",
-    top: 120,
+  webView: {
+    backgroundColor: "transparent",
+    flex: 1,
+  },
+  webViewHidden: {
+    opacity: 0,
   },
 });
 
-const resourceImageStyles = StyleSheet.create({
-  previewBackdrop: {
-    alignItems: "center",
-    backgroundColor: "rgba(2,6,23,0.96)",
-    flex: 1,
-    justifyContent: "center",
-    padding: 16,
-  },
-  previewClose: {
-    alignItems: "center",
-    backgroundColor: "rgba(15,23,42,0.78)",
-    borderRadius: 999,
-    height: 46,
-    justifyContent: "center",
-    position: "absolute",
-    right: 18,
-    top: 54,
-    width: 46,
-  },
-  previewImage: {
-    height: "100%",
-    width: "100%",
-  },
-});

apps/mobile/src/screens/WorkspaceNotesView.tsx

@@ -1,9 +1,8 @@
-import { memo, type ReactNode } from "react";
+import { memo, useEffect, useState, type ReactNode } from "react";
 import type { MemoFilterMode } from "@edgeever/client";
 import type { MemoSummary, Notebook } from "@edgeever/shared";
 import { MOBILE_UI_METRICS, toggleMobileMemoFilterMode } from "@edgeever/shared/mobile-ui";
 import { ActivityIndicator, FlatList, Platform, RefreshControl, View } from "react-native";
-import Animated, { useAnimatedStyle, useSharedValue, withTiming } from "react-native-reanimated";
 import { Check, ChevronDown, ChevronLeft, MoreHorizontal, Plus, RotateCcw, Search, Sparkles, Tag, X } from "../components/icons";
 import { Pressable, Text, TextInput } from "../components/LocalizedText";
 import type { MobileBootstrapProgress } from "../lib/local-mirror";
@@ -41,6 +40,8 @@ export const NotesView = ({
   onRetry,
   onSearchTextChange,
   onSetMemoView,
+  /** When false, unmount the real TextInput (detail modal / tab switch). */
+  searchInputEnabled = true,
   searchText,
   totalMemoCount,
   selectedMemoIds,
@@ -70,6 +71,7 @@ export const NotesView = ({
   onRetry: () => void;
   onSearchTextChange: (value: string) => void;
   onSetMemoView: (memoView: MemoView) => void;
+  searchInputEnabled?: boolean;
   searchText: string;
   totalMemoCount: number;
   selectionMode: boolean;
@@ -77,7 +79,18 @@ export const NotesView = ({
 }) => {
   const { resolvedTheme } = useMobileTheme();
   const { preference: localePreference, translate } = useMobileLocale();
+  // Fabric on iPadOS 26.5 SIGTRAPs in BaseTextInputShadowNode::measureContent when a
+  // TextInput stays mounted under a closing memo modal / WebView teardown. Only mount
+  // the real input while the user is actively searching.
+  const [searchFocused, setSearchFocused] = useState(false);
+  const searchHostActive = searchInputEnabled && !selectionMode;
+  useEffect(() => {
+    if (!searchHostActive) {
+      setSearchFocused(false);
+    }
+  }, [searchHostActive]);
   const searchActive = searchText.trim().length > 0;
+  const showSearchInput = searchHostActive && (searchFocused || searchActive);
   const filterActive = memoFilterMode !== "all";
   const searchStatusLabel = translate("正在搜索");
   const searchResultLabel = translate(`${totalMemoCount} 条结果`);
@@ -124,19 +137,45 @@ export const NotesView = ({
           <View style={styles.mobileSearchRow}>
               <View style={[styles.mobileSearchButton, searchActive && styles.mobileSearchButtonActive, searchActive && resolvedTheme === "dark" && styles.mobileSearchButtonActiveDark]}>
                 <Search color={searchActive && resolvedTheme === "dark" ? "rgb(5, 150, 105)" : searchActive ? "#059669" : "#64748b"} size={17} />
-                <TextInput
-                  accessibilityLabel="搜索笔记"
-                  autoCapitalize="none"
-                  autoCorrect={false}
-                  onChangeText={onSearchTextChange}
-                  placeholder="搜索笔记"
-                  placeholderTextColor="#94a3b8"
-                  returnKeyType="search"
-                  style={[styles.mobileSearchInput, searchActive && resolvedTheme === "dark" && styles.mobileSearchInputActiveDark]}
-                  value={searchText}
-                />
+                {showSearchInput ? (
+                  <TextInput
+                    accessibilityLabel="搜索笔记"
+                    autoCapitalize="none"
+                    autoCorrect={false}
+                    autoFocus={searchFocused && !searchActive}
+                    onBlur={() => {
+                      if (!searchText.trim()) {
+                        setSearchFocused(false);
+                      }
+                    }}
+                    onChangeText={onSearchTextChange}
+                    placeholder="搜索笔记"
+                    placeholderTextColor="#94a3b8"
+                    returnKeyType="search"
+                    style={[styles.mobileSearchInput, searchActive && resolvedTheme === "dark" && styles.mobileSearchInputActiveDark]}
+                    value={searchText}
+                  />
+                ) : (
+                  <Pressable
+                    accessibilityLabel="搜索笔记"
+                    accessibilityRole="search"
+                    disabled={!searchHostActive}
+                    onPress={() => setSearchFocused(true)}
+                    style={[styles.mobileSearchInput, { justifyContent: "center" }]}
+                  >
+                    <Text numberOfLines={1} style={{ color: "#94a3b8" }}>搜索笔记</Text>
+                  </Pressable>
+                )}
                 {searchText ? (
-                  <Pressable accessibilityLabel="清空搜索" accessibilityRole="button" onPress={() => onSearchTextChange("")} style={styles.mobileSearchClearButton}>
+                  <Pressable
+                    accessibilityLabel="清空搜索"
+                    accessibilityRole="button"
+                    onPress={() => {
+                      onSearchTextChange("");
+                      setSearchFocused(false);
+                    }}
+                    style={styles.mobileSearchClearButton}
+                  >
                     <X color={resolvedTheme === "dark" ? "rgb(100, 116, 139)" : "#64748b"} size={14} />
                   </Pressable>
                 ) : null}
@@ -395,21 +434,16 @@ const MemoCard = memo(function MemoCard({
 }) {
   const localePreference = useMobileLocale().preference;
   const memoTitle = memo.title?.trim() || DEFAULT_MEMO_TITLE;
-  const pressScale = useSharedValue(1);
-  const pressAnimatedStyle = useAnimatedStyle(() => ({
-    transform: [{ scale: pressScale.value }],
-  }));
 
-  // Avoid Reanimated layout/entering transitions on list cards: concurrent
-  // Fabric text measurement on iPad (compatibility mode / wide width) crashed
-  // App Review builds with SIGSEGV inside RCTTextLayoutManager.
+  // Keep memo cards free of Reanimated transforms: concurrent Fabric
+  // AttributedString/Paragraph measure + animated scale corrupted heap on
+  // iPadOS 26.5 (SIGTRAP/SIGSEGV in ParagraphShadowNode / RCTTextLayoutManager).
   return (
-    <Animated.View
+    <View
       style={[
         styles.memoCard,
         listDensity === "compact" && styles.memoCardCompact,
         selected && styles.memoCardSelected,
-        pressAnimatedStyle,
       ]}
     >
       {selectionMode ? (
@@ -431,12 +465,6 @@ const MemoCard = memo(function MemoCard({
         delayLongPress={520}
         onLongPress={onLongPress}
         onPress={onPress}
-        onPressIn={() => {
-          pressScale.value = withTiming(0.985, { duration: 100 });
-        }}
-        onPressOut={() => {
-          pressScale.value = withTiming(1, { duration: 160 });
-        }}
         style={[styles.memoCardContent, listDensity === "compact" && styles.memoCardContentCompact, selectionMode && styles.memoCardContentWithSelection]}
       >
         <View style={styles.memoCardTop}>
@@ -461,7 +489,7 @@ const MemoCard = memo(function MemoCard({
           ))}
         </View>
       </Pressable>
-    </Animated.View>
+    </View>
   );
 }, (previous, next) =>
   previous.memo === next.memo &&

apps/mobile/src/screens/WorkspaceScreen.tsx

@@ -390,6 +390,29 @@ export const WorkspaceScreen = ({
     }
   }, [memosQuery.data, notebooksQuery.data]);
 
+  // Keep list TextInput unmounted while a note is open, while Me/settings is
+  // open or opening, while the rich editor is opening/open, and for a short
+  // settle window after close — Fabric TextInput measure races WebView teardown
+  // on iPadOS 26.5.
+  const [searchInputEnabled, setSearchInputEnabled] = useState(true);
+  const [richEditorOpening, setRichEditorOpening] = useState(false);
+  const [settingsOpening, setSettingsOpening] = useState(false);
+  const settingsOpenGenerationRef = useRef(0);
+  useEffect(() => {
+    if (
+      selectedMemoId
+      || richEditingSession
+      || richEditorOpening
+      || settingsOpening
+      || activeView === "settings"
+    ) {
+      setSearchInputEnabled(false);
+      return;
+    }
+    const timer = setTimeout(() => setSearchInputEnabled(true), 500);
+    return () => clearTimeout(timer);
+  }, [activeView, richEditingSession, richEditorOpening, selectedMemoId, settingsOpening]);
+
   const refresh = async () => {
     if (client) {
       await syncMobileLocalMirror(client, dataScope);
@@ -424,6 +447,7 @@ export const WorkspaceScreen = ({
   };
 
   const showAllNotes = () => {
+    setSelectedMemoId(null);
     setActiveView("notes");
     setMemoView("notebook");
     setActiveNotebookId(ALL_NOTES_ID);
@@ -432,24 +456,57 @@ export const WorkspaceScreen = ({
   };
 
   const showTrash = () => {
+    setSelectedMemoId(null);
     setMemoView("trash");
     setActiveNotebookId(ALL_NOTES_ID);
     setSearchText("");
     clearSelection();
   };
 
-  const openSettings = () => {
+  const openSettings = useCallback(async () => {
+    // Me crash (16:40): same-frame unmount of NotesView + detail WebView while
+    // mounting Settings destroyed ShadowNodeFamily under Hermes HadesGC
+    // (SIGSEGV in ~ShadowNodeFamily on concurrent GC). Sequence instead:
+    // 1) tear down detail + search TextInput, 2) settle, 3) present Me as Modal
+    // without unmounting the notes tree.
+    const generation = ++settingsOpenGenerationRef.current;
+    setSettingsOpening(true);
+    setSearchInputEnabled(false);
+    setSelectedMemoId(null);
     setSearchText("");
-    setActiveView("settings");
-  };
+    setNotesActionsOpen(false);
+    setSelectionMode(false);
+    setSelectedMemoIds(new Set());
+    setSelectionMoveOpen(false);
+    setSelectionMoreOpen(false);
+    try {
+      await new Promise<void>((resolve) => {
+        requestAnimationFrame(() => {
+          requestAnimationFrame(() => resolve());
+        });
+      });
+      await new Promise((resolve) => setTimeout(resolve, 300));
+      if (generation !== settingsOpenGenerationRef.current) {
+        return;
+      }
+      setActiveView("settings");
+    } finally {
+      if (generation === settingsOpenGenerationRef.current) {
+        setSettingsOpening(false);
+      }
+    }
+  }, []);
 
-  const closeSettings = () => {
+  const closeSettings = useCallback(() => {
+    settingsOpenGenerationRef.current += 1;
+    setSettingsOpening(false);
+    setSelectedMemoId(null);
     setActiveView("notes");
     if (memoView === "trash") {
       setMemoView("notebook");
       setActiveNotebookId(ALL_NOTES_ID);
     }
-  };
+  }, [memoView]);
 
   const toggleVisibleSelection = () => {
     const visibleMemoIds = visibleMemos.map((memo) => memo.id);
@@ -485,6 +542,8 @@ export const WorkspaceScreen = ({
 
   const closeRichEditor = () => {
     const memoId = richEditingSession?.memo.id ?? null;
+    // Keep list search TextInput off while the editor tree finishes leaving.
+    setSearchInputEnabled(false);
     setRichEditingSession(null);
     setSelectedMemoId(null);
     if (memoId) {
@@ -505,24 +564,42 @@ export const WorkspaceScreen = ({
 
   const openRichEditor = useCallback(async (memo: MemoDetail) => {
     beginEditorStartup();
-    let editingMemo = memo;
-    const queuedItem = (await listMobileSyncQueueItems(syncQueueScope)).find((item) => item.memoId === memo.id);
+    // Tear down the detail HTML WebView and keep list TextInput unmounted before
+    // mounting the editor chrome / Dom TipTap. Simultaneous Fabric TextInput
+    // measure + WKWebView host creation SIGSEGVs on iPadOS 26.5.
+    setRichEditorOpening(true);
+    setSearchInputEnabled(false);
+    setSelectedMemoId(null);
+    try {
+      await new Promise<void>((resolve) => {
+        requestAnimationFrame(() => {
+          requestAnimationFrame(() => resolve());
+        });
+      });
+      // Wait long enough for detail Modal + static WebView to fully leave the tree.
+      await new Promise((resolve) => setTimeout(resolve, 280));
 
-    if (!queuedItem && client && !memo.id.startsWith("local:")) {
-      try {
-        const response = await client.getMemo(memo.id);
-        editingMemo = response.memo;
-        await upsertLocalMemo(dataScope, editingMemo);
-        queryClient.setQueryData(["mobile", "memo", "notebook", editingMemo.id], { memo: editingMemo });
-        queryClient.setQueryData(["mobile", "memo", "trash", editingMemo.id], { memo: editingMemo });
-      } catch {
-        // The local mirror remains editable while offline.
+      let editingMemo = memo;
+      const queuedItem = (await listMobileSyncQueueItems(syncQueueScope)).find((item) => item.memoId === memo.id);
+
+      if (!queuedItem && client && !memo.id.startsWith("local:")) {
+        try {
+          const response = await client.getMemo(memo.id);
+          editingMemo = response.memo;
+          await upsertLocalMemo(dataScope, editingMemo);
+          queryClient.setQueryData(["mobile", "memo", "notebook", editingMemo.id], { memo: editingMemo });
+          queryClient.setQueryData(["mobile", "memo", "trash", editingMemo.id], { memo: editingMemo });
+        } catch {
+          // The local mirror remains editable while offline.
+        }
       }
-    }
 
-    const draft = await loadMemoDraft(editingMemo.id);
-    memoDraftPrefetchRef.current.delete(memo.id);
-    setRichEditingSession({ draft, memo: editingMemo });
+      const draft = await loadMemoDraft(editingMemo.id);
+      memoDraftPrefetchRef.current.delete(memo.id);
+      setRichEditingSession({ draft, memo: editingMemo });
+    } finally {
+      setRichEditorOpening(false);
+    }
   }, [client, dataScope, loadMemoDraft, queryClient, syncQueueScope]);
 
   const memos = useMemo(() => memosQuery.data?.pages.flatMap((page) => page.memos) ?? [], [memosQuery.data]);
@@ -533,7 +610,13 @@ export const WorkspaceScreen = ({
   const selectedMemoSyncStatus = selectedMemo
     ? syncQueueItems.find((item) => item.memoId === selectedMemo.id)?.status ?? null
     : null;
-  const isRefreshing = notebooksQuery.isFetching || memosQuery.isFetching || searchQuery.isFetching || memoDetailQuery.isFetching;
+  // Pull-to-refresh must only track list refetches. Using isFetching (or
+  // memoDetailQuery) starts UIRefreshControl while opening a note or paging,
+  // and ending that animation during navigation crashes on iPadOS 26.5
+  // (SIGSEGV in RCTPullToRefreshViewComponentView / createComponentView).
+  const isRefreshing = searchActive
+    ? searchQuery.isRefetching
+    : notebooksQuery.isRefetching || memosQuery.isRefetching;
   const selectedMemoIdList = Array.from(selectedMemoIds);
   const selectedMemos = visibleMemos.filter((memo) => selectedMemoIds.has(memo.id));
   const canToggleVisibleSelection = visibleMemos.length > 0;
@@ -549,8 +632,15 @@ export const WorkspaceScreen = ({
   const canCreateMemo = memoView !== "trash" && Boolean(createMemoNotebookId);
   const openCreateMemo = () => {
     beginEditorStartup();
+    setSearchInputEnabled(false);
+    setSelectedMemoId(null);
     setIncomingClipDraft(null);
-    setCreateOpen(true);
+    // Defer Modal open so list layout settles before Dom WKWebView mounts.
+    requestAnimationFrame(() => {
+      requestAnimationFrame(() => {
+        setTimeout(() => setCreateOpen(true), 120);
+      });
+    });
   };
 
   const openIncomingClipDraft = useCallback((draft: MobileWebClipDraft) => {
@@ -1031,50 +1121,56 @@ export const WorkspaceScreen = ({
   return (
     <SafeAreaView edges={["top", "left", "right"]} style={styles.safeArea}>
 
-      {activeView === "notes" ? (
-        <NotesView
-          activeNotebook={activeNotebook}
-          initialSyncProgress={initialMirrorSyncProgress}
-          isLoading={notebooksQuery.isLoading || (searchActive ? searchQuery.isLoading : memosQuery.isLoading) || (isInitialMirrorStatusPending && visibleMemos.length === 0)}
-          isLoadingMore={searchActive ? searchQuery.isFetchingNextPage : memosQuery.isFetchingNextPage}
-          isRefreshing={isRefreshing}
-          memoFilterMode={memoFilterMode}
-          memoListDensity={memoListDensity}
-          memoView={memoView}
-          memos={visibleMemos}
-          notebooks={notebooks}
-          onCreate={openCreateMemo}
-          onClearSelection={clearSelection}
-          onFilterModeChange={setMemoFilterMode}
-          onOpenActions={() => setNotesActionsOpen(true)}
-          onOpenNotebookPicker={() => setNotebookPickerOpen(true)}
-          onMemoPress={handleMemoPress}
-          onMemoLongPress={(memo) => selectSingleMemo(memo.id)}
-          onLoadMore={() => {
-            const query = searchActive ? searchQuery : memosQuery;
-            if (query.hasNextPage && !query.isFetchingNextPage) {
-              void query.fetchNextPage();
-            }
-          }}
-          onRefresh={refresh}
-          onSearchTextChange={(value) => {
-            setSearchText(value);
-            clearSelection();
-          }}
-          onSetMemoView={(nextMemoView) => nextMemoView === "trash" ? showTrash() : showAllNotes()}
-          searchText={searchText}
-          totalMemoCount={searchActive
-            ? searchQuery.data?.pages[0]?.totalCount ?? searchResults.length
-            : memosQuery.data?.pages[0]?.totalCount ?? memos.length}
-          selectionMode={selectionMode}
-          selectedMemoIds={selectedMemoIds}
-          error={initialMirrorSyncError ?? notebooksQuery.error ?? (searchActive ? searchQuery.error : memosQuery.error)}
-          isError={Boolean(initialMirrorSyncError) || notebooksQuery.isError || (searchActive ? searchQuery.isError : memosQuery.isError)}
-          onRetry={retryInitialSync}
-        />
-      ) : null}
+      {/* Keep NotesView mounted under Me — swapping trees unmounts the whole list
+          ShadowNode graph in one commit and races Hermes HadesGC on iPadOS 26.5. */}
+      <NotesView
+        activeNotebook={activeNotebook}
+        initialSyncProgress={initialMirrorSyncProgress}
+        isLoading={notebooksQuery.isLoading || (searchActive ? searchQuery.isLoading : memosQuery.isLoading) || (isInitialMirrorStatusPending && visibleMemos.length === 0)}
+        isLoadingMore={searchActive ? searchQuery.isFetchingNextPage : memosQuery.isFetchingNextPage}
+        isRefreshing={isRefreshing}
+        memoFilterMode={memoFilterMode}
+        memoListDensity={memoListDensity}
+        memoView={memoView}
+        memos={visibleMemos}
+        notebooks={notebooks}
+        onCreate={openCreateMemo}
+        onClearSelection={clearSelection}
+        onFilterModeChange={setMemoFilterMode}
+        onOpenActions={() => setNotesActionsOpen(true)}
+        onOpenNotebookPicker={() => setNotebookPickerOpen(true)}
+        onMemoPress={handleMemoPress}
+        onMemoLongPress={(memo) => selectSingleMemo(memo.id)}
+        onLoadMore={() => {
+          const query = searchActive ? searchQuery : memosQuery;
+          if (query.hasNextPage && !query.isFetchingNextPage) {
+            void query.fetchNextPage();
+          }
+        }}
+        onRefresh={refresh}
+        onSearchTextChange={(value) => {
+          setSearchText(value);
+          clearSelection();
+        }}
+        onSetMemoView={(nextMemoView) => nextMemoView === "trash" ? showTrash() : showAllNotes()}
+        searchInputEnabled={searchInputEnabled && activeView === "notes" && !settingsOpening}
+        searchText={searchText}
+        totalMemoCount={searchActive
+          ? searchQuery.data?.pages[0]?.totalCount ?? searchResults.length
+          : memosQuery.data?.pages[0]?.totalCount ?? memos.length}
+        selectionMode={selectionMode}
+        selectedMemoIds={selectedMemoIds}
+        error={initialMirrorSyncError ?? notebooksQuery.error ?? (searchActive ? searchQuery.error : memosQuery.error)}
+        isError={Boolean(initialMirrorSyncError) || notebooksQuery.isError || (searchActive ? searchQuery.isError : memosQuery.isError)}
+        onRetry={retryInitialSync}
+      />
 
-      {activeView === "settings" ? (
+      <Modal
+        animationType="slide"
+        onRequestClose={closeSettings}
+        presentationStyle="fullScreen"
+        visible={activeView === "settings"}
+      >
         <SettingsView
           currentUser={session?.user ?? null}
           onClose={closeSettings}
@@ -1084,7 +1180,7 @@ export const WorkspaceScreen = ({
           onImageCompressionChange={handleImageCompressionChange}
           onSignOut={signOut}
         />
-      ) : null}
+      </Modal>
 
       <MemoDetailModal
         isDeleting={deleteMemoMutation.isPending}
@@ -1258,9 +1354,10 @@ export const WorkspaceScreen = ({
         </Pressable>
         <BottomNavItem
           active={false}
-          icon={<UserRound color="#64748b" size={20} />}
+          disabled={settingsOpening}
+          icon={<UserRound color={settingsOpening ? "#cbd5e1" : "#64748b"} size={20} />}
           label="我的"
-          onPress={openSettings}
+          onPress={() => void openSettings()}
         />
         </View>
       ) : null}
@@ -1611,6 +1708,11 @@ const CreateMemoModal = ({
   const [draftLoaded, setDraftLoaded] = useState(false);
   const [dirty, setDirty] = useState(false);
   const [editorReady, setEditorReady] = useState(false);
+  // Delay Dom TipTap WKWebView host — cold create on iPadOS 26.5 can SIGTRAP in
+  // WebProcessPool init when Dom mounts in the same transaction as the Modal.
+  const [editorHostReady, setEditorHostReady] = useState(false);
+  const [createTitleFocused, setCreateTitleFocused] = useState(false);
+  const [createTagsFocused, setCreateTagsFocused] = useState(false);
   const [imageOperation, setImageOperation] = useState<"idle" | "creating" | "uploading">("idle");
   const [resourceTarget, setResourceTarget] = useState<MobileResourceTarget | null>(null);
   const targetNotebookId = notebookId || fallbackNotebookId;
@@ -1624,11 +1726,20 @@ const CreateMemoModal = ({
 
   useEffect(() => {
     if (!visible) {
+      setEditorHostReady(false);
       return;
     }
     let active = true;
     setDraftLoaded(false);
     setEditorReady(false);
+    setEditorHostReady(false);
+    setCreateTitleFocused(false);
+    setCreateTagsFocused(false);
+    const hostTimer = setTimeout(() => {
+      if (active) {
+        setEditorHostReady(true);
+      }
+    }, 360);
     if (initialDraft) {
       const markdown = initialDraft.contentMarkdown;
       contentMarkdownRef.current = markdown;
@@ -1642,6 +1753,7 @@ const CreateMemoModal = ({
       setDraftLoaded(true);
       return () => {
         active = false;
+        clearTimeout(hostTimer);
       };
     }
     void readMobileNewMemoDraft(dataScope).then((draft) => {
@@ -1664,6 +1776,7 @@ const CreateMemoModal = ({
     });
     return () => {
       active = false;
+      clearTimeout(hostTimer);
     };
   }, [dataScope, fallbackNotebookId, initialDraft, visible]);
 
@@ -1889,6 +2002,17 @@ const CreateMemoModal = ({
       return;
     }
     await flushEditor();
+    // Unmount Dom TipTap before the create Modal tears down (same ShadowNode race as edit).
+    setEditorHostReady(false);
+    setCreateTitleFocused(false);
+    setCreateTagsFocused(false);
+    setEditorReady(false);
+    await new Promise<void>((resolve) => {
+      requestAnimationFrame(() => {
+        requestAnimationFrame(() => resolve());
+      });
+    });
+    await new Promise((resolve) => setTimeout(resolve, 280));
     createMutation.mutate();
   };
 
@@ -1938,9 +2062,9 @@ const CreateMemoModal = ({
     if (target) setResourceTarget(target);
   }, []);
 
-  const editorElement = useMemo(() => draftLoaded && baseUrl ? (
+  const editorElement = useMemo(() => draftLoaded && baseUrl && editorHostReady ? (
     <LocalTiptapEditor
-      autoFocus
+      autoFocus={false}
       baseUrl={baseUrl}
       content={contentJsonRef.current}
       dom={{
@@ -1974,7 +2098,7 @@ const CreateMemoModal = ({
       locale={resolvedLocale}
       theme={resolvedTheme}
     />
-  ) : null, [baseUrl, draftLoaded, loadEditorResource, resolvedLocale, resolvedTheme, selectResource]);
+  ) : null, [baseUrl, draftLoaded, editorHostReady, loadEditorResource, resolvedLocale, resolvedTheme, selectResource]);
 
   return (
     <Modal animationType="slide" onRequestClose={() => void requestClose()} presentationStyle="fullScreen" visible={visible}>
@@ -1999,36 +2123,75 @@ const CreateMemoModal = ({
         </View>
 
         <View style={styles.createMemoMain}>
-          <TextInput
-            autoCorrect
-            accessibilityLabel="笔记标题"
-            onChangeText={(value) => {
-              setTitle(value);
-              markDirty();
-            }}
-            placeholder={DEFAULT_MEMO_TITLE}
-            placeholderTextColor="#94a3b8"
-            style={styles.createMemoTitleInput}
-            value={title}
-          />
+          {/* Lazy title/tags TextInputs — same iPadOS 26.5 Fabric measure crash as edit. */}
+          {createTitleFocused && editorReady ? (
+            <TextInput
+              autoCorrect
+              autoFocus
+              accessibilityLabel="笔记标题"
+              onBlur={() => setCreateTitleFocused(false)}
+              onChangeText={(value) => {
+                setTitle(value);
+                markDirty();
+              }}
+              placeholder={DEFAULT_MEMO_TITLE}
+              placeholderTextColor="#94a3b8"
+              style={styles.createMemoTitleInput}
+              value={title}
+            />
+          ) : (
+            <Pressable
+              accessibilityLabel="笔记标题"
+              accessibilityRole="button"
+              onPress={() => {
+                if (editorReady) {
+                  setCreateTitleFocused(true);
+                }
+              }}
+              style={styles.createMemoTitleInput}
+            >
+              <Text numberOfLines={1} style={{ color: title ? "#0f172a" : "#94a3b8", fontSize: 22, fontWeight: "700" }}>
+                {title || DEFAULT_MEMO_TITLE}
+              </Text>
+            </Pressable>
+          )}
 
           <View style={styles.createMemoMetaRow}>
             <Pressable accessibilityLabel="所在笔记本" accessibilityRole="button" onPress={() => setNotebookPickerOpen(true)} style={styles.createMemoNotebookButton}>
               <Text numberOfLines={1} style={styles.createMemoNotebookText}>{selectedNotebookName}</Text>
               <ChevronDown color="#64748b" size={14} />
             </Pressable>
-            <TextInput
-              accessibilityLabel="笔记标签"
-              autoCorrect
-              onChangeText={(value) => {
-                setTagsText(value);
-                markDirty();
-              }}
-              placeholder="添加标签，用逗号分隔"
-              placeholderTextColor="#94a3b8"
-              style={styles.createMemoTagsInput}
-              value={tagsText}
-            />
+            {createTagsFocused && editorReady ? (
+              <TextInput
+                accessibilityLabel="笔记标签"
+                autoCorrect
+                autoFocus
+                onBlur={() => setCreateTagsFocused(false)}
+                onChangeText={(value) => {
+                  setTagsText(value);
+                  markDirty();
+                }}
+                placeholder="添加标签，用逗号分隔"
+                placeholderTextColor="#94a3b8"
+                style={styles.createMemoTagsInput}
+                value={tagsText}
+              />
+            ) : (
+              <Pressable
+                accessibilityLabel="添加标签，用逗号分隔"
+                accessibilityRole="button"
+                onPress={() => {
+                  if (editorReady) {
+                    setCreateTagsFocused(true);
+                  }
+                }}
+                style={[styles.createMemoTagsInput, { justifyContent: "center" }]}
+              >
+                <Text numberOfLines={1} style={{ color: tagsText ? "#0f172a" : "#94a3b8" }}>
+                  {tagsText || "添加标签，用逗号分隔"}
+                </Text>
+              </Pressable>
+            )}
           </View>
 
           <View style={styles.createMemoEditorFrame}>
@@ -2258,6 +2421,7 @@ const RichEditorModal = ({
   const flushResolverRef = useRef<(() => void) | null>(null);
   const savingRef = useRef(false);
   const uploadingRef = useRef(false);
+  const closingRef = useRef(false);
   const [title, setTitle] = useState(resolveEditableMemoTitle(restoredDraft?.title ?? memo?.title));
   const [tagsText, setTagsText] = useState(restoredDraft?.tagsText ?? memo?.tags.join(", ") ?? "");
   const [notebookId, setNotebookId] = useState(restoredDraft?.notebookId ?? memo?.notebookId ?? "");
@@ -2267,11 +2431,30 @@ const RichEditorModal = ({
   const [dirty, setDirty] = useState(Boolean(restoredDraft));
   const [saving, setSaving] = useState(false);
   const [uploading, setUploading] = useState(false);
+  const [closing, setClosing] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const [startupMs, setStartupMs] = useState<number | null>(null);
   const [resourceTarget, setResourceTarget] = useState<MobileResourceTarget | null>(null);
+  // Stagger TextInput chrome and Dom TipTap so Fabric never measures title/tags
+  // TextInputs in the same commit as WKWebView host creation (iPadOS 26.5 SIGSEGV).
+  const [chromeReady, setChromeReady] = useState(false);
+  const [editorHostReady, setEditorHostReady] = useState(false);
+  const [titleFocused, setTitleFocused] = useState(false);
+  const [tagsFocused, setTagsFocused] = useState(false);
   const notebookLabel = notebooks.find((notebook) => notebook.id === notebookId)?.name ?? "未分类";
-  const saveLabel = error ? "保存失败" : saving ? "保存中" : uploading ? "上传中" : dirty ? (draftRestored ? "本地草稿" : "未保存") : ready ? "已保存" : "加载中";
+  const saveLabel = closing
+    ? "正在退出"
+    : error
+      ? "保存失败"
+      : saving
+        ? "保存中"
+        : uploading
+          ? "上传中"
+          : dirty
+            ? (draftRestored ? "本地草稿" : "未保存")
+            : ready
+              ? "已保存"
+              : "加载中";
   const titleRef = useRef(title);
   const tagsTextRef = useRef(tagsText);
   const notebookIdRef = useRef(notebookId);
@@ -2279,11 +2462,19 @@ const RichEditorModal = ({
   tagsTextRef.current = tagsText;
   notebookIdRef.current = notebookId;
 
-  useEffect(() => () => {
-    if (initialFocusTimerRef.current !== null) {
-      clearTimeout(initialFocusTimerRef.current);
-      initialFocusTimerRef.current = null;
-    }
+  useEffect(() => {
+    // Phase 1: header chrome only (Pressable labels, no TextInput).
+    // Phase 2: Dom TipTap host after layout has settled without native text fields.
+    const chromeTimer = setTimeout(() => setChromeReady(true), 120);
+    const editorTimer = setTimeout(() => setEditorHostReady(true), 360);
+    return () => {
+      clearTimeout(chromeTimer);
+      clearTimeout(editorTimer);
+      if (initialFocusTimerRef.current !== null) {
+        clearTimeout(initialFocusTimerRef.current);
+        initialFocusTimerRef.current = null;
+      }
+    };
   }, []);
 
   const persistDraft = async (contentJson: TiptapDoc) => {
@@ -2372,17 +2563,44 @@ const RichEditorModal = ({
   };
 
   const requestClose = async () => {
-    if (savingRef.current || uploadingRef.current) {
+    if (savingRef.current || uploadingRef.current || closingRef.current) {
       return;
     }
+    closingRef.current = true;
+    setClosing(true);
     if (initialFocusTimerRef.current !== null) {
       clearTimeout(initialFocusTimerRef.current);
       initialFocusTimerRef.current = null;
     }
-    await flushEditor();
-    const savedMemo = await save();
-    if (savedMemo) {
+    try {
+      await flushEditor();
+      const savedMemo = await save();
+      if (!savedMemo && dirtyRef.current) {
+        // Hard save failure: stay so the user can retry (draft is still local).
+        closingRef.current = false;
+        setClosing(false);
+        return;
+      }
+      // 17:06 crash: unmounting Dom TipTap + remounting NotesView in one commit
+      // double-frees ShadowNodeFamily under Fabric (SIGBUS on JS thread).
+      // Drop the editor host first, settle, then leave the screen.
+      setTitleFocused(false);
+      setTagsFocused(false);
+      setEditorHostReady(false);
+      setChromeReady(false);
+      setReady(false);
+      setNotebookPickerOpen(false);
+      setResourceTarget(null);
+      await new Promise<void>((resolve) => {
+        requestAnimationFrame(() => {
+          requestAnimationFrame(() => resolve());
+        });
+      });
+      await new Promise((resolve) => setTimeout(resolve, 320));
       onClose();
+    } catch {
+      closingRef.current = false;
+      setClosing(false);
     }
   };
 
@@ -2492,9 +2710,9 @@ const RichEditorModal = ({
   }, []);
 
   const editorElement = useMemo(
-    () => memo && baseUrl ? (
+    () => memo && baseUrl && editorHostReady ? (
       <LocalTiptapEditor
-        autoFocus
+        autoFocus={false}
         baseUrl={baseUrl}
         content={contentJsonRef.current}
         dom={{
@@ -2516,27 +2734,31 @@ const RichEditorModal = ({
           if (initialFocusTimerRef.current !== null) {
             clearTimeout(initialFocusTimerRef.current);
           }
+          // Focus body only after TextInputs have settled; never autoFocus Dom on mount.
           initialFocusTimerRef.current = setTimeout(() => {
             initialFocusTimerRef.current = null;
             editorRef.current?.focusEnd();
             if (Platform.OS === "android") {
               showEdgeEverKeyboard();
             }
-          }, 180);
+          }, 280);
         }}
         ref={editorRef}
         locale={resolvedLocale}
         theme={resolvedTheme}
       />
     ) : null,
-    [baseUrl, loadEditorResource, memo?.id, resolvedLocale, resolvedTheme, selectResource]
+    [baseUrl, editorHostReady, loadEditorResource, memo?.id, resolvedLocale, resolvedTheme, selectResource]
   );
 
   useEffect(() => {
-    if (!memo || !dirty) {
+    if (!memo || !dirty || closingRef.current) {
       return;
     }
     const timeout = setTimeout(() => {
+      if (closingRef.current) {
+        return;
+      }
       void writeMobileMemoDraft({
         memoId: memo.id,
         expectedRevision: memo.revision,
@@ -2551,10 +2773,13 @@ const RichEditorModal = ({
   }, [dirty, memo, notebookId, tagsText, title]);
 
   useEffect(() => {
-    if (!memo || !dirty || !ready || savingRef.current || uploadingRef.current) {
+    if (!memo || !dirty || !ready || savingRef.current || uploadingRef.current || closingRef.current) {
       return;
     }
     const timeout = setTimeout(() => {
+      if (closingRef.current) {
+        return;
+      }
       void flushEditor().then(save);
     }, 1200);
     return () => clearTimeout(timeout);
@@ -2563,53 +2788,101 @@ const RichEditorModal = ({
   return (
     <SafeAreaView style={styles.richEditorSafeArea}>
         <View style={styles.createMemoHeader}>
-          <Pressable accessibilityLabel="返回" accessibilityRole="button" disabled={saving || uploading} onPress={() => void requestClose()} style={styles.createMemoBackButton}>
-            <ChevronLeft color={saving || uploading ? "#cbd5e1" : "#0f172a"} size={30} />
+          <Pressable accessibilityLabel="返回" accessibilityRole="button" disabled={saving || uploading || closing} onPress={() => void requestClose()} style={styles.createMemoBackButton}>
+            <ChevronLeft color={saving || uploading || closing ? "#cbd5e1" : "#0f172a"} size={30} />
           </Pressable>
           <View style={styles.createMemoHeaderActions}>
-            <Text numberOfLines={1} style={[styles.createMemoStatus, styles.richEditorHeaderStatus, (saving || uploading || dirty) && styles.createMemoStatusActive, error && styles.richEditorStatusError]}>{saveLabel}</Text>
+            <Text numberOfLines={1} style={[styles.createMemoStatus, styles.richEditorHeaderStatus, (saving || uploading || dirty || closing) && styles.createMemoStatusActive, error && styles.richEditorStatusError]}>{saveLabel}</Text>
             <Pressable
               accessibilityLabel="完成编辑"
               accessibilityRole="button"
-              disabled={saving || uploading || !ready}
+              disabled={saving || uploading || closing || !ready}
               onPress={() => void requestClose()}
-              style={[styles.createMemoDoneButton, (saving || uploading || !ready) && styles.createMemoDoneButtonDisabled]}
+              style={[styles.createMemoDoneButton, (saving || uploading || closing || !ready) && styles.createMemoDoneButtonDisabled]}
             >
-              {saving ? <ActivityIndicator color="#64748b" size="small" /> : <Text style={[styles.createMemoDoneText, (uploading || !ready) && styles.createMemoDoneTextDisabled]}>完成</Text>}
+              {saving || closing ? <ActivityIndicator color="#64748b" size="small" /> : <Text style={[styles.createMemoDoneText, (uploading || !ready) && styles.createMemoDoneTextDisabled]}>完成</Text>}
             </Pressable>
           </View>
         </View>
 
         {memo && baseUrl ? (
           <View style={styles.richEditorContainer}>
-            <TextInput
-              onChangeText={(value) => {
-                setTitle(value);
-                dirtyRef.current = true;
-                setDirty(true);
-              }}
-              placeholder={DEFAULT_MEMO_TITLE}
-              placeholderTextColor="#94a3b8"
-              style={styles.createMemoTitleInput}
-              value={title}
-            />
+            {chromeReady ? (
+              // Only mount title TextInput after editor is ready AND user taps —
+              // cold open of RichEditorModal must stay TextInput-free on iPadOS 26.5.
+              titleFocused && ready ? (
+                <TextInput
+                  autoFocus
+                  onBlur={() => setTitleFocused(false)}
+                  onChangeText={(value) => {
+                    setTitle(value);
+                    dirtyRef.current = true;
+                    setDirty(true);
+                  }}
+                  placeholder={DEFAULT_MEMO_TITLE}
+                  placeholderTextColor="#94a3b8"
+                  style={styles.createMemoTitleInput}
+                  value={title}
+                />
+              ) : (
+                <Pressable
+                  accessibilityLabel="笔记标题"
+                  accessibilityRole="button"
+                  onPress={() => {
+                    if (ready) {
+                      setTitleFocused(true);
+                    }
+                  }}
+                  style={styles.createMemoTitleInput}
+                >
+                  <Text numberOfLines={1} style={{ color: title ? "#0f172a" : "#94a3b8", fontSize: 22, fontWeight: "700" }}>
+                    {title || DEFAULT_MEMO_TITLE}
+                  </Text>
+                </Pressable>
+              )
+            ) : (
+              <View style={styles.createMemoTitleInput} />
+            )}
             <View style={[styles.createMemoMetaRow, styles.richStandaloneMetaRow]}>
               <Pressable accessibilityLabel="所在笔记本" accessibilityRole="button" onPress={() => setNotebookPickerOpen(true)} style={styles.createMemoNotebookButton}>
                 <Text numberOfLines={1} style={styles.createMemoNotebookText}>{notebookLabel}</Text>
                 <ChevronDown color="#64748b" size={14} />
               </Pressable>
-              <TextInput
-                autoCorrect
-                onChangeText={(value) => {
-                  setTagsText(value);
-                  dirtyRef.current = true;
-                  setDirty(true);
-                }}
-                placeholder="添加标签，用逗号分隔"
-                placeholderTextColor="#94a3b8"
-                style={[styles.createMemoTagsInput, styles.richStandaloneTagsInput]}
-                value={tagsText}
-              />
+              {chromeReady ? (
+                tagsFocused && ready ? (
+                  <TextInput
+                    autoCorrect
+                    autoFocus
+                    onBlur={() => setTagsFocused(false)}
+                    onChangeText={(value) => {
+                      setTagsText(value);
+                      dirtyRef.current = true;
+                      setDirty(true);
+                    }}
+                    placeholder="添加标签，用逗号分隔"
+                    placeholderTextColor="#94a3b8"
+                    style={[styles.createMemoTagsInput, styles.richStandaloneTagsInput]}
+                    value={tagsText}
+                  />
+                ) : (
+                  <Pressable
+                    accessibilityLabel="添加标签，用逗号分隔"
+                    accessibilityRole="button"
+                    onPress={() => {
+                      if (ready) {
+                        setTagsFocused(true);
+                      }
+                    }}
+                    style={[styles.createMemoTagsInput, styles.richStandaloneTagsInput, { justifyContent: "center" }]}
+                  >
+                    <Text numberOfLines={1} style={{ color: tagsText ? "#0f172a" : "#94a3b8" }}>
+                      {tagsText || "添加标签，用逗号分隔"}
+                    </Text>
+                  </Pressable>
+                )
+              ) : (
+                <View style={[styles.createMemoTagsInput, styles.richStandaloneTagsInput]} />
+              )}
             </View>
             {draftRestored ? <Text style={styles.richEditorDraftNotice}>已恢复上次未完成的本地草稿</Text> : null}
             <View style={styles.richEditorFrame}>
@@ -3037,8 +3310,26 @@ const ActionButton = ({
   </Pressable>
 );
 
-const BottomNavItem = ({ active = false, icon, label, onPress }: { active?: boolean; icon: ReactNode; label: string; onPress: () => void }) => (
-  <Pressable accessibilityRole="button" accessibilityState={{ selected: active }} onPress={onPress} style={styles.bottomNavItem}>
+const BottomNavItem = ({
+  active = false,
+  disabled = false,
+  icon,
+  label,
+  onPress,
+}: {
+  active?: boolean;
+  disabled?: boolean;
+  icon: ReactNode;
+  label: string;
+  onPress: () => void;
+}) => (
+  <Pressable
+    accessibilityRole="button"
+    accessibilityState={{ disabled, selected: active }}
+    disabled={disabled}
+    onPress={onPress}
+    style={[styles.bottomNavItem, disabled && styles.buttonDisabled]}
+  >
     {icon}
     <Text style={[styles.bottomNavText, active && styles.bottomNavTextActive]}>{label}</Text>
   </Pressable>

bun.lock

@@ -77,7 +77,7 @@
     },
     "apps/desktop": {
       "name": "@edgeever/desktop",
-      "version": "1.11.1",
+      "version": "1.12.3",
       "dependencies": {
         "electron-updater": "^6.6.2",
       },
@@ -129,6 +129,7 @@
         "expo-sqlite": "~57.0.1",
         "expo-status-bar": "latest",
         "expo-updates": "~57.0.8",
+        "markdown-it": "10.0.0",
         "mermaid": "^11.16.0",
         "react": "19.2.3",
         "react-dom": "19.2.3",
@@ -145,6 +146,7 @@
         "semver": "^7.8.5",
       },
       "devDependencies": {
+        "@types/markdown-it": "^14.1.2",
         "@types/react": "latest",
         "@types/semver": "^7.7.1",
         "babel-preset-expo": "latest",
@@ -727,7 +729,7 @@
 
     "@expo/sudo-prompt": ["@expo/sudo-prompt@9.3.2", "", {}, "sha512-HHQigo3rQWKMDzYDLkubN5WQOYXJJE2eNqIQC2axC2iO3mHdwnIR7FgZVvHWtBwAdzBgAP0ECp8KqS8TiMKvgw=="],
 
-    "@expo/ui": ["@expo/ui@57.0.8", "", { "dependencies": { "sf-symbols-typescript": "^2.1.0", "vaul": "^1.1.2" }, "peerDependencies": { "@babel/core": "*", "expo": "*", "react": "*", "react-dom": "*", "react-native": "*", "react-native-worklets": "*" }, "optionalPeers": ["@babel/core", "react-dom", "react-native-worklets"] }, "sha512-aR17CRM45k4JyFahX4Xn2b6ti3aiddC4SAzvsm3iUCVacQA6tGmClu012rYNeVXhJ96csX2o7EEymfzYqgJNxw=="],
+    "@expo/ui": ["@expo/ui@57.0.9", "", { "dependencies": { "sf-symbols-typescript": "^2.1.0", "vaul": "^1.1.2" }, "peerDependencies": { "@babel/core": "*", "expo": "*", "react": "*", "react-dom": "*", "react-native": "*", "react-native-worklets": "*" }, "optionalPeers": ["@babel/core", "react-dom", "react-native-worklets"] }, "sha512-VIxvk5ncgylBj2vrIP1iLaMc3XmYucKbf0hIcg3qx9l2anB9JzaYnH7cvVgNU3RfwV8R9m/tA7lX9BP7D8uMQw=="],
 
     "@expo/vector-icons": ["@expo/vector-icons@15.1.1", "", { "peerDependencies": { "expo-font": ">=14.0.4", "react": "*", "react-native": "*" } }, "sha512-Iu2VkcoI5vygbtYngm7jb4ifxElNVXQYdDrYkT7UCEIiKLeWnQY0wf2ZhHZ+Wro6Sc5TaumpKUOqDRpLi5rkvw=="],
 
@@ -1363,10 +1365,16 @@
 
     "@types/keyv": ["@types/keyv@3.1.4", "", { "dependencies": { "@types/node": "*" } }, "sha512-BQ5aZNSCpj7D6K2ksrRCTmKRLEpnPvWDiLPfoGyhZ++8YtiK9d/3DBKPJgry359X/P1PfruyYwvnvwFjuEiEIg=="],
 
+    "@types/linkify-it": ["@types/linkify-it@5.0.0", "", {}, "sha512-sVDA58zAw4eWAffKOaQH5/5j3XeayukzDk+ewSsnv3p4yJEZHCCzMDiZM8e0OUrRvmpGZ85jf4yDHkHsgBNr9Q=="],
+
+    "@types/markdown-it": ["@types/markdown-it@14.1.2", "", { "dependencies": { "@types/linkify-it": "^5", "@types/mdurl": "^2" } }, "sha512-promo4eFwuiW+TfGxhi+0x3czqTYJkG8qB17ZUJiVF10Xm7NLVRSLUsfRTU/6h1e24VvRnXCx+hG7li58lkzog=="],
+
     "@types/marked": ["@types/marked@6.0.0", "", { "dependencies": { "marked": "*" } }, "sha512-jmjpa4BwUsmhxcfsgUit/7A9KbrC48Q0q8KvnY107ogcjGgTFDlIL3RpihNpx2Mu1hM4mdFQjoVc4O6JoGKHsA=="],
 
     "@types/mdast": ["@types/mdast@4.0.4", "", { "dependencies": { "@types/unist": "*" } }, "sha512-kGaNbPh1k7AFzgpud/gMdvIm5xuECykRR+JnWKQno9TAXVa6WIVCGTPvYGekIDL4uwCZQSYbUxNBSb1aUo79oA=="],
 
+    "@types/mdurl": ["@types/mdurl@2.0.0", "", {}, "sha512-RGdgjQUZba5p6QEFAVx2OGb8rQDL/cPRG7GiedRzMcJ1tYnUANBncjbSB1NRGwbvjcPeikRABz2nshyPk1bhWg=="],
+
     "@types/mdx": ["@types/mdx@2.0.14", "", {}, "sha512-T48PeuJtvLosNTPVhfnIp3i/n3a4g4Bad7YCq5k64D4u7NwDrAotikQ+5+sjtUvBmxCMlbo3dVL+C2dP0rWHzg=="],
 
     "@types/minimatch": ["@types/minimatch@3.0.5", "", {}, "sha512-Klz949h02Gz2uZCMGwDUSDS1YBlTdDDgbWHi+81l29tQALUtvz4rAYi5uoVhE5Lagoq6DeqAUlbrHvW/mXDgdQ=="],
@@ -1477,7 +1485,7 @@
 
     "arg": ["arg@5.0.2", "", {}, "sha512-PYjyFOLKQ9y57JvQ6QLo8dAgNqswh8M1RMJYdQduT6xbWSgK36P/Z/v+p888pM69jMMfS8Xd8F6I1kQ/I9HUGg=="],
 
-    "argparse": ["argparse@2.0.1", "", {}, "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q=="],
+    "argparse": ["argparse@1.0.10", "", { "dependencies": { "sprintf-js": "~1.0.2" } }, "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg=="],
 
     "aria-hidden": ["aria-hidden@1.2.6", "", { "dependencies": { "tslib": "^2.0.0" } }, "sha512-ik3ZgC9dY/lYVVM++OISsaYDeg1tb0VtP5uL3ouh1koGOaUMDPpbFIei4JkFimWUFPn90sbMNMXQAIVOlnYKJA=="],
 
@@ -2115,7 +2123,7 @@
 
     "expo-modules-jsi": ["expo-modules-jsi@57.0.3", "", { "peerDependencies": { "react-native": "*" } }, "sha512-B+iXJCC5OIXjFKkLLSY2DZ8BGS+hC3PBTrALpV43pHqhXqqZrRH3uTEylZgsoKQO8N8tjmjAua2ucTFHtr1o0w=="],
 
-    "expo-router": ["expo-router@57.0.9", "", { "dependencies": { "@expo/log-box": "^57.0.2", "@expo/metro-runtime": "^57.0.8", "@expo/schema-utils": "^57.0.2", "@expo/ui": "^57.0.8", "@radix-ui/react-slot": "^1.2.0", "@radix-ui/react-tabs": "^1.1.12", "@react-native-masked-view/masked-view": "^0.3.2", "@testing-library/jest-dom": "^6.9.1", "@testing-library/user-event": "^14.6.1", "client-only": "^0.0.1", "color": "^4.2.3", "debug": "^4.3.4", "escape-string-regexp": "^4.0.0", "expo-glass-effect": "^57.0.1", "expo-server": "^57.0.1", "expo-symbols": "^57.0.1", "fast-deep-equal": "^3.1.3", "invariant": "^2.2.4", "nanoid": "^3.3.8", "query-string": "^7.1.3", "react-fast-compare": "^3.2.2", "react-is": "^19.1.0", "react-native-drawer-layout": "^4.2.2", "react-native-screens": "^4.26.0", "server-only": "^0.0.1", "sf-symbols-typescript": "^2.1.0", "shallowequal": "^1.1.0", "standard-navigation": "^0.0.5", "vaul": "^1.1.2" }, "peerDependencies": { "@testing-library/react-native": ">= 13.2.0", "expo": "*", "expo-constants": "^57.0.8", "expo-linking": "^57.0.4", "react": "*", "react-dom": "*", "react-native": "*", "react-native-gesture-handler": "*", "react-native-reanimated": "*", "react-native-safe-area-context": ">= 5.4.0", "react-native-web": "*", "react-server-dom-webpack": "~19.0.4 || ~19.1.5 || ~19.2.4" }, "optionalPeers": ["@testing-library/react-native", "react-dom", "react-native-gesture-handler", "react-native-reanimated", "react-native-web", "react-server-dom-webpack"] }, "sha512-jPBwHmKmBfzCLUuKgFf+I/UhFkxvS3J2WF5MQKcuupC8XzQPBAqdzbxmcPIDY3VIVabHw7WnhwzsROWA74t1LA=="],
+    "expo-router": ["expo-router@57.0.10", "", { "dependencies": { "@expo/log-box": "^57.0.2", "@expo/metro-runtime": "^57.0.8", "@expo/schema-utils": "^57.0.2", "@expo/ui": "^57.0.9", "@radix-ui/react-slot": "^1.2.0", "@radix-ui/react-tabs": "^1.1.12", "@react-native-masked-view/masked-view": "^0.3.2", "@testing-library/jest-dom": "^6.9.1", "@testing-library/user-event": "^14.6.1", "client-only": "^0.0.1", "color": "^4.2.3", "debug": "^4.3.4", "escape-string-regexp": "^4.0.0", "expo-glass-effect": "^57.0.1", "expo-server": "^57.0.1", "expo-symbols": "^57.0.1", "fast-deep-equal": "^3.1.3", "invariant": "^2.2.4", "nanoid": "^3.3.8", "query-string": "^7.1.3", "react-fast-compare": "^3.2.2", "react-is": "^19.1.0", "react-native-drawer-layout": "^4.2.2", "react-native-screens": "^4.26.0", "server-only": "^0.0.1", "sf-symbols-typescript": "^2.1.0", "shallowequal": "^1.1.0", "standard-navigation": "^0.0.5", "vaul": "^1.1.2" }, "peerDependencies": { "@testing-library/react-native": ">= 13.2.0", "expo": "*", "expo-constants": "^57.0.9", "expo-linking": "^57.0.5", "react": "*", "react-dom": "*", "react-native": "*", "react-native-gesture-handler": "*", "react-native-reanimated": "*", "react-native-safe-area-context": ">= 5.4.0", "react-native-web": "*", "react-server-dom-webpack": "~19.0.4 || ~19.1.5 || ~19.2.4" }, "optionalPeers": ["@testing-library/react-native", "react-dom", "react-native-gesture-handler", "react-native-reanimated", "react-native-web", "react-server-dom-webpack"] }, "sha512-E6Cjudl4wQ86KdEHqLGhBmfOFRdtzXTtRzEEDmqOvqtkAc9C637u0us7CGKkkee9m+kwuHqfhn779ww85rn/Pg=="],
 
     "expo-secure-store": ["expo-secure-store@57.0.1", "", { "peerDependencies": { "expo": "*" } }, "sha512-tLa1VmSadOq19mA/dwkl99RbHyjLE0T1qqBYMY3/OsguZTI+rlrDy/DDJjupqlVtmr95hD7o1pYqx5aL+B4YMA=="],
 
@@ -4301,6 +4309,8 @@
 
     "jest-worker/supports-color": ["supports-color@8.1.1", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q=="],
 
+    "js-yaml/argparse": ["argparse@2.0.1", "", {}, "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q=="],
+
     "jwa/safe-buffer": ["safe-buffer@5.2.1", "", {}, "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="],
 
     "jws/safe-buffer": ["safe-buffer@5.2.1", "", {}, "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="],
@@ -4309,8 +4319,6 @@
 
     "log-symbols/chalk": ["chalk@2.4.2", "", { "dependencies": { "ansi-styles": "^3.2.1", "escape-string-regexp": "^1.0.5", "supports-color": "^5.3.0" } }, "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ=="],
 
-    "markdown-it/argparse": ["argparse@1.0.10", "", { "dependencies": { "sprintf-js": "~1.0.2" } }, "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg=="],
-
     "markdown-it/entities": ["entities@2.0.3", "", {}, "sha512-MyoZ0jgnLvB2X3Lg5HqpFmn1kybDiIfEQmKzTb5apr51Rb+T3KdmMiqa70T+bhGnyv7bQ6WMj2QMHpGMmlrUYQ=="],
 
     "mdast-util-find-and-replace/escape-string-regexp": ["escape-string-regexp@5.0.0", "", {}, "sha512-/veY75JbMK4j1yjvuUxuVsiS/hr/4iHs9FTT6cgTexxdE0Ly/glccBAkloH/DofkjRbZU3bnoj38mOmhkZ0lHw=="],

docs/mobile-native-parity.md

@@ -38,7 +38,7 @@ The App follows the mobile PWA for high-frequency layouts and interactions, but
 | Memo list, filters, sort, pin, and batch operations | Implemented |
 | Local-cache search | Implemented |
 | Local TipTap create/edit and autosave flow | Implemented |
-| Note detail body preview via read-only TipTap (same schema as edit) | Implemented |
+| Note detail body preview via static HTML WebView markdown (TipTap reserved for edit; avoids iPadOS 26.5 Fabric text crashes) | Implemented |
 | Attachments, image compression, and resource library | Implemented |
 | Tag management | Implemented |
 | Revision history and restore | Implemented |

tests/mobile-app-scope.test.ts

@@ -65,10 +65,16 @@ describe("mobile app scope", () => {
     expect(memoDetailSource).toContain("onResolveSyncConflict");
   });
 
-  test("renders note detail body with the shared read-only TipTap viewer", () => {
-    expect(memoDetailSource).toContain('mode="viewer"');
-    expect(memoDetailSource).toContain("LocalTiptapEditor");
-    expect(memoDetailSource).not.toContain("react-native-markdown-display");
+  test("renders note detail markdown via static HTML WebView (not Dom TipTap / Fabric Text)", () => {
+    // Full markdown (tables/headings/bold) via markdown-it → HTML WebView with JS off.
+    // Avoids Fabric AttributedString SIGTRAP and Dom TipTap media TCC on iPadOS 26.5.
+    expect(memoDetailSource).toContain("resolveMemoContentMarkdown");
+    expect(memoDetailSource).toContain("buildMemoDetailHtml");
+    expect(memoDetailSource).toContain("react-native-webview");
+    expect(memoDetailSource).toContain("javaScriptEnabled={false}");
+    expect(memoDetailSource).toContain("SAFE_DOM_WEBVIEW_PROPS");
+    expect(memoDetailSource).not.toContain('mode="viewer"');
+    expect(memoDetailSource).not.toContain("LocalTiptapEditor");
   });
 
   test("keeps memo list free of Reanimated layout transitions that crash Fabric text layout", () => {
@@ -77,20 +83,40 @@ describe("mobile app scope", () => {
     expect(notesViewSource).not.toContain("LinearTransition");
     expect(notesViewSource).not.toContain("entering=");
     expect(notesViewSource).not.toContain("layout={LinearTransition");
+    expect(notesViewSource).not.toContain("useSharedValue");
+    expect(notesViewSource).not.toContain("useAnimatedStyle");
+    expect(notesViewSource).not.toContain("react-native-reanimated");
   });
 
   test("hardens DOM/WebView hosts against media capture probes during App Review", () => {
     expect(mobileDomSource).toContain('mediaCapturePermissionGrantType: "deny"');
     expect(mobileDomSource).toContain("mediaPlaybackRequiresUserAction: true");
+    // Detail body is native Markdown; Dom hosts remain on edit/create/mermaid paths.
     expect(workspaceSource).toContain("SAFE_DOM_WEBVIEW_PROPS");
-    expect(memoDetailSource).toContain("SAFE_DOM_WEBVIEW_PROPS");
   });
 
   test("declares iOS privacy strings and full-screen phone-on-iPad presentation", () => {
     const infoPlist = appJson.expo.ios?.infoPlist ?? {};
-    expect(appJson.expo.ios?.supportsTablet).toBe(false);
+    expect(appJson.expo.ios?.supportsTablet).toBe(true);
     expect(infoPlist.UIRequiresFullScreen).toBe(true);
     expect(String(infoPlist.NSMicrophoneUsageDescription ?? "")).toMatch(/microphone/i);
     expect(String(infoPlist.NSCameraUsageDescription ?? "")).toMatch(/camera/i);
   });
+
+  test("keeps New Architecture off to avoid iPadOS 26.5 Fabric text layout crashes", () => {
+    expect((appJson.expo as { newArchEnabled?: boolean }).newArchEnabled).toBe(false);
+  });
+
+  test("keeps list search TextInput unmounted while a note is open", () => {
+    expect(notesViewSource).toContain("searchInputEnabled");
+    expect(notesViewSource).toContain("showSearchInput");
+    expect(workspaceSource).toContain("searchInputEnabled={searchInputEnabled");
+    expect(workspaceSource).toContain("setSearchInputEnabled(false)");
+  });
+
+  test("keeps pull-to-refresh off memo-detail fetches that crash iPadOS RefreshControl", () => {
+    expect(workspaceSource).not.toMatch(/isRefreshing\s*=\s*[^;]*memoDetailQuery\.isFetching/);
+    expect(workspaceSource).toMatch(/isRefreshing\s*=\s*searchActive/);
+    expect(workspaceSource).toContain("isRefetching");
+  });
 });