feat: integrate emoji-mart and refactor emoji usage

- Added @emoji-mart/data and @emoji-mart/react dependencies for enhanced emoji support.
- Replaced static emoji characters with Emoji component in various UI components for consistency and improved rendering.
- Updated generateDateTitle function to return an object with emoji and text for better structure.
- Marked the task for removing emojis from the UI as complete in TODO.md.

package.json

@@ -25,10 +25,13 @@
     "@dnd-kit/core": "^6.3.1",
     "@dnd-kit/sortable": "^10.0.0",
     "@dnd-kit/utilities": "^3.2.2",
+    "@emoji-mart/data": "^1.2.1",
+    "@emoji-mart/react": "^1.1.1",
     "@prisma/client": "^6.16.1",
     "bcryptjs": "^3.0.2",
     "clsx": "^2.1.1",
     "date-fns": "^4.1.0",
+    "emoji-mart": "^5.6.0",
     "emoji-regex": "^10.5.0",
     "lucide-react": "^0.544.0",
     "next": "15.5.3",
@@ -37,7 +40,8 @@
     "react": "19.1.0",
     "react-dom": "19.1.0",
     "recharts": "^3.2.1",
-    "tailwind-merge": "^3.3.1"
+    "tailwind-merge": "^3.3.1",
+    "twemoji": "^14.0.2"
   },
   "devDependencies": {
     "@eslint/eslintrc": "^3",