feat: add logos editor

frontend/package.json

@@ -10,6 +10,9 @@
     "test:run": "vitest run"
   },
   "dependencies": {
+    "@blocknote/core": "^0.47.1",
+    "@blocknote/react": "^0.47.1",
+    "@blocknote/shadcn": "^0.47.1",
     "@radix-ui/react-avatar": "^1.1.11",
     "@radix-ui/react-collapsible": "^1.1.12",
     "@radix-ui/react-context-menu": "^2.2.16",

frontend/src/app/recollections/RecollectionsPage.tsx

@@ -64,6 +64,7 @@ import {
   RECOLLECTION_FILE_EXT,
   RECOLLECTION_VERSION,
 } from './recollectionGraphStorage'
+import { getLogosContent, setLogosContent } from './recollectionStore'
 import { toast } from 'sonner'
 import { NewRecollectionDialog } from '@/app/kosmos/NewRecollectionDialog'
 import { RecollectionsPageBackground } from './RecollectionsPageBackground'
@@ -419,6 +420,10 @@ export function RecollectionsPage() {
     if (graph && (graph.nodes.length > 0 || graph.edges.length > 0)) {
       saveGraphToStorage(newId, { version: RECOLLECTION_VERSION, nodes: graph.nodes, edges: graph.edges })
     }
+    const logosContent = getLogosContent(duplicateTarget.id)
+    if (logosContent && logosContent.length > 0) {
+      setLogosContent(newId, logosContent)
+    }
     toast.success('Recollection duplicated')
     setDuplicateTarget(null)
     setDuplicateName('')

frontend/src/app/recollections/logos/LogosPage.tsx

@@ -1,15 +1,44 @@
 /**
- * Logos page: default view for a recollection. Placeholder for now.
+ * Logos page: BlockNote editor for the recollection. Content persisted in recollection store.
+ * Layout and styling aligned with Flux (same flex/overflow, bg-background, theme).
  */
 
-import React, { useEffect } from 'react'
-import { useLocation } from 'react-router-dom'
+import React, { useCallback, useEffect, useMemo, useRef } from 'react'
+import { useLocation, useParams } from 'react-router-dom'
+import { useCreateBlockNote } from '@blocknote/react'
+import { BlockNoteView } from '@blocknote/shadcn'
+import { useTheme } from '@/lib/themeContext'
 import { useRecollectionMenubar } from '../RecollectionMenubarContext'
+import { getLogosContent, setLogosContent, type StoredLogosContent } from '../recollectionStore'
+
+const SAVE_DEBOUNCE_MS = 400
 
 export function LogosPage() {
   const { pathname } = useLocation()
+  const { recollectionId } = useParams<{ recollectionId: string }>()
+  const { theme } = useTheme()
   const { setCustomContent } = useRecollectionMenubar()
   const isLogosActive = pathname.endsWith('/logos') || pathname.match(/\/recollections\/[^/]+\/?$/)
+  const saveTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(null)
+  const scrollContainerRef = useRef<HTMLDivElement>(null)
+
+  const initialContent = useMemo(
+    () => (recollectionId ? getLogosContent(recollectionId) ?? undefined : undefined),
+    [recollectionId]
+  )
+
+  const editor = useCreateBlockNote({ initialContent }, [recollectionId])
+
+  const persistContent = useCallback(() => {
+    if (!recollectionId || !editor) return
+    try {
+      const doc = editor.document
+      const serialized = JSON.parse(JSON.stringify(doc)) as StoredLogosContent
+      setLogosContent(recollectionId, serialized)
+    } catch {
+      // ignore serialize errors
+    }
+  }, [recollectionId, editor])
 
   useEffect(() => {
     if (!isLogosActive) return
@@ -17,10 +46,69 @@ export function LogosPage() {
     return () => setCustomContent(null)
   }, [isLogosActive, setCustomContent])
 
+  useEffect(() => {
+    if (!editor || !recollectionId) return
+    const handleChange = () => {
+      if (saveTimeoutRef.current) clearTimeout(saveTimeoutRef.current)
+      saveTimeoutRef.current = setTimeout(() => {
+        saveTimeoutRef.current = null
+        persistContent()
+      }, SAVE_DEBOUNCE_MS)
+    }
+    editor.onChange(handleChange)
+    return () => {
+      if (saveTimeoutRef.current) {
+        clearTimeout(saveTimeoutRef.current)
+        saveTimeoutRef.current = null
+      }
+    }
+  }, [editor, recollectionId, persistContent])
+
+  if (!recollectionId) {
     return (
       <div className="flex h-full min-h-0 flex-1 flex-col items-center justify-center p-8 text-muted-foreground">
-      <p className="text-sm">Logos</p>
-      <p className="mt-1 text-xs">This page is empty for now.</p>
+        <p className="text-sm">No recollection selected.</p>
+      </div>
+    )
+  }
+
+  if (!editor) {
+    return (
+      <div className="flex h-full min-h-0 flex-1 flex-col items-center justify-center p-8 text-muted-foreground">
+        <p className="text-sm">Loading…</p>
+      </div>
+    )
+  }
+
+  const handleWheel = useCallback((e: React.WheelEvent<HTMLDivElement>) => {
+    const el = scrollContainerRef.current
+    if (!el) return
+    const { scrollTop, scrollHeight, clientHeight } = el
+    const canScrollUp = scrollTop > 0
+    const canScrollDown = scrollTop < scrollHeight - clientHeight
+    const scrollingDown = e.deltaY > 0
+    const scrollingUp = e.deltaY < 0
+    if ((scrollingDown && canScrollDown) || (scrollingUp && canScrollUp)) {
+      e.preventDefault()
+      el.scrollBy({ top: e.deltaY, behavior: 'auto' })
+    }
+  }, [])
+
+  return (
+    <div className="logos-page flex h-full min-h-0 flex-1 flex-col overflow-hidden bg-background">
+      <div
+        ref={scrollContainerRef}
+        className="min-h-0 flex-1 overflow-y-auto overflow-x-hidden"
+        onWheelCapture={handleWheel}
+      >
+        <div className="logos-editor bn-shadcn mx-auto w-full max-w-3xl px-6 py-8">
+          <BlockNoteView
+            editor={editor}
+            theme={theme}
+            className="min-h-full w-full"
+          />
+        </div>
+      </div>
     </div>
   )
 }

frontend/src/app/recollections/recollectionGraphStorage.ts

@@ -1,37 +1,24 @@
 /**
- * Per-recollection graph persistence (localStorage).
- * Saves and loads StoredGraphState (version + nodes + edges). Used by useCanvasGraph and export.
+ * Per-recollection graph persistence. Re-exports from recollectionStore for backward compatibility.
+ * New code should use recollectionStore (getGraph, setGraph, removeRecollectionData) directly.
  */
 
-import type { StoredGraphState } from '@/lib/graph/state'
+import {
+  getGraph,
+  setGraph,
+  removeRecollectionData,
+  RECOLLECTION_FILE_EXT,
+  RECOLLECTION_VERSION,
+  type StoredGraphState,
+} from './recollectionStore'
 
 export type { StoredGraphState }
-export const RECOLLECTION_FILE_EXT = '.zui.json'
-export const RECOLLECTION_VERSION = 1
-
-const GRAPH_KEY_PREFIX = 'zui_graph_'
+export { RECOLLECTION_FILE_EXT, RECOLLECTION_VERSION }
 
 export function getGraphStorageKey(recollectionId: string): string {
-  return `${GRAPH_KEY_PREFIX}${recollectionId}`
+  return `zui_graph_${recollectionId}`
 }
 
-export function loadGraphFromStorage(recollectionId: string): StoredGraphState | null {
-  try {
-    const raw = localStorage.getItem(getGraphStorageKey(recollectionId))
-    if (!raw) return null
-    const data = JSON.parse(raw) as unknown
-    if (!data || typeof data !== 'object' || !Array.isArray((data as StoredGraphState).nodes) || !Array.isArray((data as StoredGraphState).edges))
-      return null
-    return data as StoredGraphState
-  } catch {
-    return null
-  }
-}
-
-export function saveGraphToStorage(recollectionId: string, state: StoredGraphState): void {
-  localStorage.setItem(getGraphStorageKey(recollectionId), JSON.stringify(state))
-}
-
-export function removeGraphFromStorage(recollectionId: string): void {
-  localStorage.removeItem(getGraphStorageKey(recollectionId))
-}
+export const loadGraphFromStorage = getGraph
+export const saveGraphToStorage = setGraph
+export const removeGraphFromStorage = removeRecollectionData

frontend/src/app/recollections/recollectionStore.ts

@@ -0,0 +1,70 @@
+/**
+ * Per-recollection persistence: graph (Flux) and logos (BlockNote) state.
+ * Single API for loading, saving, and removing all data for a recollection.
+ */
+
+import type { StoredGraphState } from '@/lib/graph/state'
+
+export type { StoredGraphState }
+
+/** BlockNote document: array of blocks (PartialBlock). Stored as JSON. */
+export type StoredLogosContent = Record<string, unknown>[]
+
+export const RECOLLECTION_FILE_EXT = '.zui.json'
+export const RECOLLECTION_VERSION = 1
+
+const GRAPH_KEY_PREFIX = 'zui_graph_'
+const LOGOS_KEY_PREFIX = 'zui_logos_'
+
+function getGraphKey(recollectionId: string): string {
+  return `${GRAPH_KEY_PREFIX}${recollectionId}`
+}
+
+function getLogosKey(recollectionId: string): string {
+  return `${LOGOS_KEY_PREFIX}${recollectionId}`
+}
+
+export function getGraph(recollectionId: string): StoredGraphState | null {
+  try {
+    const raw = localStorage.getItem(getGraphKey(recollectionId))
+    if (!raw) return null
+    const data = JSON.parse(raw) as unknown
+    if (
+      !data ||
+      typeof data !== 'object' ||
+      !Array.isArray((data as StoredGraphState).nodes) ||
+      !Array.isArray((data as StoredGraphState).edges)
+    )
+      return null
+    return data as StoredGraphState
+  } catch {
+    return null
+  }
+}
+
+export function setGraph(recollectionId: string, state: StoredGraphState): void {
+  localStorage.setItem(getGraphKey(recollectionId), JSON.stringify(state))
+}
+
+export function getLogosContent(recollectionId: string): StoredLogosContent | null {
+  try {
+    const raw = localStorage.getItem(getLogosKey(recollectionId))
+    if (!raw) return null
+    const data = JSON.parse(raw) as unknown
+    if (!Array.isArray(data)) return null
+    if (!data.every((item) => item != null && typeof item === 'object')) return null
+    return data as StoredLogosContent
+  } catch {
+    return null
+  }
+}
+
+export function setLogosContent(recollectionId: string, content: StoredLogosContent): void {
+  localStorage.setItem(getLogosKey(recollectionId), JSON.stringify(content))
+}
+
+/** Removes both graph and logos data for the recollection. */
+export function removeRecollectionData(recollectionId: string): void {
+  localStorage.removeItem(getGraphKey(recollectionId))
+  localStorage.removeItem(getLogosKey(recollectionId))
+}

frontend/src/styles.css

@@ -1,4 +1,6 @@
 @import "shadcn/dist/tailwind.css";
+@import "@blocknote/core/fonts/inter.css";
+@import "@blocknote/shadcn/style.css";
 
 @tailwind base;
 @tailwind components;
@@ -431,3 +433,17 @@ pre {
 .recollection-flip-face-back {
     transform: rotateY(-180deg);
 }
+
+/* Logos page: BlockNote editor aligned with Flux (bg, theme). Document-style column. */
+.logos-page {
+    background: hsl(var(--background));
+}
+
+.logos-editor.bn-shadcn {
+    --bn-editor-background: transparent;
+}
+
+.logos-editor .bn-editor {
+    min-height: 100%;
+    padding: 0;
+}

frontend/tailwind.config.cjs

@@ -1,7 +1,7 @@
 /* Tailwind configuration for Vite + React */
 module.exports = {
 	darkMode: ['class'],
-	content: ['./index.html', './src/**/*.{ts,tsx,js,jsx}'],
+	content: ['./index.html', './src/**/*.{ts,tsx,js,jsx}', './node_modules/@blocknote/shadcn/**/*.{js,ts,jsx,tsx}'],
 	theme: {
     	extend: {
     		borderRadius: {