refactor(collab): remove live document collaboration and enforce strictly read-only sharing

frontend/src/features/workspace/OutlinerTree.tsx

@@ -1,7 +1,6 @@
 import React, { useState, useRef, useEffect, useCallback, useMemo } from 'react';
 import { Plus } from 'lucide-react';
-import { DocumentBlock, BlockLockInfo } from '../../lib/types';
-import { RemoteCursor } from '../../lib/useDocumentSync';
+import { DocumentBlock } from '../../lib/types';
 import { OutlinerBlock } from './OutlinerBlock';
 
 export interface OutlinerTreeProps {
@@ -10,8 +9,6 @@ export interface OutlinerTreeProps {
   canEdit: boolean;
   levelOffset?: number;
   onZoomBlock?: (blockId: string) => void;
-  remoteCursors?: Record<string, RemoteCursor>;
-  sendCursorMoved?: (blockId: string | null, selectionStart?: number, selectionEnd?: number) => void;
   onUpdateBlock: (updated: DocumentBlock, immediate?: boolean) => void;
   onUpdateBlocks?: (updated: DocumentBlock[]) => void;
   onCreateBlock: (newBlock: DocumentBlock, afterBlockId?: string) => void;
@@ -20,10 +17,6 @@ export interface OutlinerTreeProps {
   onTagClick?: (tag: string) => void;
   onWikiLinkClick?: (pageTitle: string) => void;
   initialFocusedBlockId?: string | null;
-  activeBlockLocks?: Record<string, BlockLockInfo>;
-  onFocusBlock?: (blockId: string) => void;
-  onBlurBlock?: (blockId: string) => void;
-  currentUserId?: string;
 }
 
 export const OutlinerTree: React.FC<OutlinerTreeProps> = ({
@@ -32,8 +25,6 @@ export const OutlinerTree: React.FC<OutlinerTreeProps> = ({
   canEdit,
   levelOffset = 0,
   onZoomBlock,
-  remoteCursors,
-  sendCursorMoved,
   onUpdateBlock,
   onUpdateBlocks,
   onCreateBlock,
@@ -42,10 +33,6 @@ export const OutlinerTree: React.FC<OutlinerTreeProps> = ({
   onTagClick,
   onWikiLinkClick,
   initialFocusedBlockId,
-  activeBlockLocks,
-  onFocusBlock,
-  onBlurBlock,
-  currentUserId,
 }) => {
   const [focusedBlockId, setFocusedBlockId] = useState<string | null>(null);
   const [highlightedBlockId, setHighlightedBlockId] = useState<string | null>(
@@ -371,24 +358,9 @@ export const OutlinerTree: React.FC<OutlinerTreeProps> = ({
     return () => window.removeEventListener('dragend', clearDrag);
   }, []);
 
-  const cursorsByBlock = useMemo(() => {
-    const map: Record<string, RemoteCursor[]> = {};
-    if (!remoteCursors) return map;
-    for (const c of Object.values(remoteCursors)) {
-      if (c.blockId) {
-        if (!map[c.blockId]) map[c.blockId] = [];
-        map[c.blockId].push(c);
-      }
-    }
-    return map;
-  }, [remoteCursors]);
-
   return (
     <div className="space-y-0.5">
       {visibleEntries.map(({ block, index, hasChildren, maxAllowedLevel }) => {
-        const lockInfo = activeBlockLocks?.[block.id];
-        const isLockedByOther = Boolean(lockInfo && currentUserId && lockInfo.userId !== currentUserId);
-
         return (
           <OutlinerBlock
             key={block.id}
@@ -400,15 +372,6 @@ export const OutlinerTree: React.FC<OutlinerTreeProps> = ({
             canEdit={canEdit}
             levelOffset={levelOffset}
             onZoomBlock={onZoomBlock}
-            activeRemoteCursors={cursorsByBlock[block.id] || []}
-            sendCursorMoved={sendCursorMoved}
-            onFocusBlock={(bId) => {
-              setFocusedBlockId(bId);
-              onFocusBlock?.(bId);
-            }}
-            onBlurBlock={(bId) => {
-              onBlurBlock?.(bId);
-            }}
             onUpdateBlock={onUpdateBlock}
             onCreateBlockBelow={handleCreateBlockBelow}
             onDeleteBlock={handleDeleteBlock}
@@ -422,9 +385,6 @@ export const OutlinerTree: React.FC<OutlinerTreeProps> = ({
             isDragTarget={dragOverIndex === index && draggedIndex !== index}
             isTargeted={highlightedBlockId === block.id}
             registerTextareaRef={registerTextareaRef}
-            isLockedByOther={isLockedByOther}
-            lockedByName={lockInfo?.userName}
-            lockedByColor={lockInfo?.userColor}
           />
         );
       })}