feat: complete workspace, triage, outliner and sharing overhaul (tasks 1-26)

frontend/src/features/workspace/OutlinerTree.tsx

@@ -1,6 +1,6 @@
 import React, { useState, useRef, useEffect, useCallback, useMemo } from 'react';
 import { Plus } from 'lucide-react';
-import { DocumentBlock } from '../../lib/types';
+import { DocumentBlock, BlockType } from '../../lib/types';
 import { OutlinerBlock } from './OutlinerBlock';
 
 export interface OutlinerTreeProps {
@@ -169,8 +169,7 @@ export const OutlinerTree: React.FC<OutlinerTreeProps> = ({
       const idx = blocks.findIndex((b) => b.id === afterBlockId);
       const currentBlock = idx >= 0 ? blocks[idx] : null;
       const level = currentBlock ? Math.max(0, currentBlock.level || 0) : 0;
-      const inheritedType =
-        currentBlock && currentBlock.type === 'todo' ? 'todo' : 'text';
+      const inheritedType: BlockType = 'text';
 
       const newBlock: DocumentBlock = {
         id: `blk_${Date.now().toString(36)}_${Math.random().toString(36).slice(2, 7)}`,
@@ -191,7 +190,7 @@ export const OutlinerTree: React.FC<OutlinerTreeProps> = ({
   );
 
   const handleDeleteBlock = useCallback(
-    (blockId: string) => {
+    (blockId: string, deleteSubtree = false) => {
       if (!canEdit) return;
       const idx = blocks.findIndex((b) => b.id === blockId);
       if (idx === -1) return;
@@ -216,9 +215,25 @@ export const OutlinerTree: React.FC<OutlinerTreeProps> = ({
       if (targetFocusBlock) {
         focusBlockInput(targetFocusBlock.id, 'end');
       }
-      onDeleteBlock(blockId);
+
+      if (deleteSubtree) {
+        const rootLevel = blocks[idx].level || 0;
+        const idsToDelete = [blockId];
+        for (let j = idx + 1; j < blocks.length; j++) {
+          if ((blocks[j].level || 0) > rootLevel) {
+            idsToDelete.push(blocks[j].id);
+          } else {
+            break;
+          }
+        }
+        for (const id of idsToDelete) {
+          onDeleteBlock(id);
+        }
+      } else {
+        onDeleteBlock(blockId);
+      }
     },
-    [blocks, canEdit, focusBlockInput, onDeleteBlock, onUpdateBlock]
+    [blocks, canEdit, focusBlockInput, levelOffset, onDeleteBlock, onUpdateBlock]
   );
 
   const handleIndentBlock = useCallback(