diff --git a/tsconfig.json b/tsconfig.json
index f236fad..5fbc154 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,4 +1,8 @@
 {
   "extends": "@ocavue/tsconfig/dom/root.json",
-  "references": [{ "path": "./packages/core/tsconfig.json" }]
+  "references": [
+    { "path": "./packages/core/tsconfig.json" },
+    { "path": "./packages/react/tsconfig.json" },
+    { "path": "./website/tsconfig.json" }
+  ]
 }
diff --git a/website/src/app.tsx b/website/src/app.tsx
index 10f49e1..e4ebae3 100644
--- a/website/src/app.tsx
+++ b/website/src/app.tsx
@@ -1,7 +1,8 @@
-import { MeowdownEditor, type EditorMode } from '@meowdown/react'
+import { MeowdownEditor, type TagItem, type WikilinkItem } from '@meowdown/react'
 import { type CSSProperties, useLayoutEffect, useState } from 'react'
 
 import { uploadFile } from './upload-file.ts'
+import { MODES, useEditorMode } from './use-editor-mode.ts'
 
 // Confirm, then open the target in a new tab. Shared by the link and image
 // click handlers below.
@@ -19,35 +20,6 @@ function handleImageClick({ src }: { src: string }): void {
   confirmAndOpen('this image', src)
 }
 
-interface ModeOption {
-  value: EditorMode
-  label: string
-  description: string
-}
-
-const MODES: ModeOption[] = [
-  {
-    value: 'focus',
-    label: 'Focus',
-    description: 'Syntax stays hidden and peeks out only where your cursor rests.',
-  },
-  {
-    value: 'show',
-    label: 'Show',
-    description: 'Every Markdown character stays visible, dimmed in soft grey.',
-  },
-  {
-    value: 'hide',
-    label: 'Hide',
-    description: 'Markdown characters disappear for a clean, fully rendered view.',
-  },
-  {
-    value: 'source',
-    label: 'Source',
-    description: 'Raw Markdown with syntax highlighting, like an IDE.',
-  },
-]
-
 const INITIAL_CONTENT = `
 # Welcome to Meowdown
 
@@ -90,10 +62,10 @@ function greet(name: string): string {
 
 const TAGS = ['cats', 'editor', 'ideas', 'markdown', 'meow', 'notes', 'react', 'todo', 'work']
 
-async function searchTags(query: string): Promise<string[]> {
+async function searchTags(query: string): Promise<TagItem[]> {
   // Simulate network latency so the tag menu's loading state shows up.
   await new Promise((resolve) => setTimeout(resolve, 200))
-  return TAGS.filter((tag) => tag.includes(query))
+  return TAGS.filter((tag) => tag.includes(query)).map((tag) => ({ tag }))
 }
 
 const NOTES = [
@@ -105,10 +77,12 @@ const NOTES = [
   'Travel plans',
 ]
 
-async function searchNotes(query: string): Promise<string[]> {
+async function searchNotes(query: string): Promise<WikilinkItem[]> {
   // Simulate network latency so the wikilink menu's loading state shows up.
   await new Promise((resolve) => setTimeout(resolve, 200))
-  return NOTES.filter((note) => note.toLowerCase().includes(query))
+  return NOTES.filter((note) => note.toLowerCase().includes(query)).map((note) => ({
+    target: note,
+  }))
 }
 
 const ICON_BUTTON_CLASS =
@@ -199,8 +173,7 @@ function Brand() {
 }
 
 export function App() {
-  const [mode, setMode] = useState<EditorMode>('focus')
-  const activeMode = MODES.find((option) => option.value === mode) ?? MODES[0]
+  const { mode, setMode, activeMode } = useEditorMode()
 
   return (
     <main className="relative min-h-dvh overflow-hidden text-stone-600 dark:bg-stone-950">
diff --git a/website/src/use-editor-mode.ts b/website/src/use-editor-mode.ts
new file mode 100644
index 0000000..410ad95
--- /dev/null
+++ b/website/src/use-editor-mode.ts
@@ -0,0 +1,61 @@
+import type { EditorMode } from '@meowdown/react'
+import { useEffect, useState } from 'react'
+
+interface ModeOption {
+  value: EditorMode
+  label: string
+  description: string
+}
+
+export const MODES: ModeOption[] = [
+  {
+    value: 'focus',
+    label: 'Focus',
+    description: 'Syntax stays hidden and peeks out only where your cursor rests.',
+  },
+  {
+    value: 'show',
+    label: 'Show',
+    description: 'Every Markdown character stays visible, dimmed in soft grey.',
+  },
+  {
+    value: 'hide',
+    label: 'Hide',
+    description: 'Markdown characters disappear for a clean, fully rendered view.',
+  },
+  {
+    value: 'source',
+    label: 'Source',
+    description: 'Raw Markdown with syntax highlighting, like an IDE.',
+  },
+]
+
+const MODE_STORAGE_KEY = 'meowdown:mode'
+
+function readStoredMode(): EditorMode {
+  const stored = sessionStorage.getItem(MODE_STORAGE_KEY)
+  if (stored) {
+    for (const option of MODES) {
+      if (option.value === stored) {
+        return option.value
+      }
+    }
+  }
+  return 'focus'
+}
+
+function writeStoredMode(mode: EditorMode): void {
+  sessionStorage.setItem(MODE_STORAGE_KEY, mode)
+}
+
+export function useEditorMode() {
+  const [mode, setMode] = useState<EditorMode>(readStoredMode)
+
+  useEffect(() => {
+    writeStoredMode(mode)
+  }, [mode])
+
+  const activeMode = MODES.find((option) => option.value === mode) ?? MODES[0]
+
+  return { mode, setMode, activeMode }
+}