feat(tree): replace sidebar tree (react-aborist) with custom tree implementation (#2199)

* feat(tree): replace react-arborist with custom tree implementation

* feat(tree): keyboard arrow navigation between rows

* feat(emoji-picker): focus search input on open

* refactor(emoji): switch to @slidoapp/emoji-mart fork for accessibility

* feat(tree): Home/End and typeahead keyboard navigation

* feat(tree): roving tabindex and * to expand sibling subtrees

* feat(tree): Space activation and ARIA refinements

* fix(tree): move treeitem role to focusable row + aria-current

apps/client/package.json

@@ -7,13 +7,18 @@
     "build": "tsc && vite build",
     "lint": "eslint .",
     "preview": "vite preview",
-    "format": "prettier --write \"src/**/*.tsx\" \"src/**/*.ts\""
+    "format": "prettier --write \"src/**/*.tsx\" \"src/**/*.ts\"",
+    "test": "vitest run",
+    "test:watch": "vitest"
   },
   "dependencies": {
+    "@atlaskit/pragmatic-drag-and-drop": "^1.8.1",
+    "@atlaskit/pragmatic-drag-and-drop-auto-scroll": "^2.1.0",
+    "@atlaskit/pragmatic-drag-and-drop-flourish": "^2.0.15",
+    "@atlaskit/pragmatic-drag-and-drop-hitbox": "^1.1.0",
+    "@atlaskit/pragmatic-drag-and-drop-live-region": "^1.3.4",
     "@casl/react": "^5.0.1",
     "@docmost/editor-ext": "workspace:*",
-    "@emoji-mart/data": "^1.2.1",
-    "@emoji-mart/react": "^1.1.1",
     "@excalidraw/excalidraw": "0.18.0-3a5ef40",
     "@mantine/core": "^8.3.18",
     "@mantine/dates": "^8.3.18",
@@ -22,13 +27,16 @@
     "@mantine/modals": "^8.3.18",
     "@mantine/notifications": "^8.3.18",
     "@mantine/spotlight": "^8.3.18",
+    "@slidoapp/emoji-mart": "^5.8.7",
+    "@slidoapp/emoji-mart-data": "^1.2.4",
+    "@slidoapp/emoji-mart-react": "^1.1.5",
     "@tabler/icons-react": "^3.40.0",
     "@tanstack/react-query": "5.90.17",
+    "@tanstack/react-virtual": "3.13.24",
     "alfaaz": "^1.1.0",
     "axios": "1.16.0",
     "blueimp-load-image": "^5.16.0",
     "clsx": "^2.1.1",
-    "emoji-mart": "^5.6.0",
     "file-saver": "^2.0.5",
     "highlightjs-sap-abap": "^0.3.0",
     "i18next": "25.10.1",
@@ -44,7 +52,6 @@
     "mitt": "^3.0.1",
     "posthog-js": "1.372.2",
     "react": "^18.3.1",
-    "react-arborist": "3.4.0",
     "react-clear-modal": "^2.0.18",
     "react-dom": "^18.3.1",
     "react-drawio": "^1.0.7",
@@ -59,6 +66,8 @@
   "devDependencies": {
     "@eslint/js": "^9.28.0",
     "@tanstack/eslint-plugin-query": "^5.94.4",
+    "@testing-library/jest-dom": "^6.6.0",
+    "@testing-library/react": "^16.1.0",
     "@types/blueimp-load-image": "^5.16.6",
     "@types/file-saver": "^2.0.7",
     "@types/js-cookie": "^3.0.6",
@@ -72,6 +81,7 @@
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.5.2",
     "globals": "^15.13.0",
+    "jsdom": "^25.0.0",
     "optics-ts": "^2.4.1",
     "postcss": "^8.5.12",
     "postcss-preset-mantine": "^1.18.0",
@@ -79,6 +89,7 @@
     "prettier": "^3.8.1",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.57.1",
-    "vite": "8.0.5"
+    "vite": "8.0.5",
+    "vitest": "^4.1.6"
   }
 }