feat: integrate Radix UI toggle components and replace custom toast implementation with Sonner

- Added @radix-ui/react-toggle and @radix-ui/react-toggle-group to package dependencies.
- Implemented ToggleGroup and Toggle components for improved UI interaction.
- Replaced custom toast notifications with Sonner for better user feedback.
- Updated CanvasPage and ProjectsPage to utilize new toast notifications.
- Removed obsolete toast context and provider.
- Enhanced ProjectsPage with a toggle view for project display (cards/table).

frontend/package.json

@@ -21,6 +21,8 @@
     "@radix-ui/react-separator": "^1.1.8",
     "@radix-ui/react-slot": "^1.2.4",
     "@radix-ui/react-switch": "^1.2.6",
+    "@radix-ui/react-toggle": "^1.1.10",
+    "@radix-ui/react-toggle-group": "^1.1.11",
     "@radix-ui/react-tooltip": "^1.2.8",
     "@uiw/react-codemirror": "^4.25.7",
     "@wireweave/core": "^2.6.0",
@@ -29,11 +31,13 @@
     "clsx": "^2.1.1",
     "lucide-react": "^0.577.0",
     "marked": "^17.0.4",
+    "next-themes": "^0.4.6",
     "nunjucks": "^3.2.4",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "react-router-dom": "^6.28.0",
     "react-zoom-pan-pinch": "^3.7.0",
+    "sonner": "^2.0.7",
     "tailwind-merge": "^3.5.0",
     "tailwindcss-animate": "^1.0.7"
   },