chore: update dependencies

Backend:
- gunicorn 23.0.0 → 25.1.0
- setuptools 79.0.1 → 82.0.1
- litellm >=1.72.3 → >=1.82.1

Frontend:
- Migrate Tailwind CSS 3 → 4, daisyUI 4 → 5
  - Add @tailwindcss/vite plugin, remove autoprefixer
  - Replace tailwind.config.js with src/app.css (CSS-based config)
  - Convert custom themes (aestheticDark, catppuccinMocha, aestheticLight,
    northernLights) to daisyUI 5 CSS variable format
  - Remove daisyUI v4-only '-bordered' classes from 45 component files
    (input-bordered, select-bordered, textarea-bordered, file-input-bordered
    are removed in v5; borders are default)
- @types/node 22 → 25
- @lukulent/svelte-umami 0.0.3 → 0.0.4
- packageManager: bun@1.2.22 → bun@1.3.10

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

frontend/package.json

@@ -1,7 +1,7 @@
 {
 	"name": "voyage-frontend",
 	"version": "0.12.0",
-	"packageManager": "bun@1.2.22",
+	"packageManager": "bun@1.3.10",
 	"scripts": {
 		"dev": "vite dev",
 		"django": "cd .. && cd backend/server && python3 manage.py runserver",
@@ -23,17 +23,17 @@
 		"@sveltejs/kit": "^2.49.5",
 		"@sveltejs/vite-plugin-svelte": "^3.1.2",
 		"@tailwindcss/typography": "^0.5.19",
-		"@types/node": "^22.19.15",
+		"@tailwindcss/vite": "^4.2.1",
+		"@types/node": "^25.4.0",
 		"@types/qrcode": "^1.5.6",
-		"autoprefixer": "^10.4.27",
 		"baseline-browser-mapping": "^2.10.0",
-		"daisyui": "^4.12.24",
+		"daisyui": "^5.5.19",
 		"postcss": "^8.5.8",
 		"prettier": "^3.8.1",
 		"prettier-plugin-svelte": "^3.5.1",
 		"svelte": "^4.2.20",
 		"svelte-check": "^3.8.6",
-		"tailwindcss": "^3.4.19",
+		"tailwindcss": "^4.2.1",
 		"tslib": "^2.8.1",
 		"typescript": "^5.9.3",
 		"unplugin-icons": "^0.19.3",
@@ -42,7 +42,7 @@
 	"type": "module",
 	"dependencies": {
 		"@mdi/js": "^7.4.47",
-		"@lukulent/svelte-umami": "^0.0.3",
+		"@lukulent/svelte-umami": "^0.0.4",
 		"dompurify": "^3.3.2",
 		"emoji-picker-element": "^1.29.1",
 		"gsap": "^3.14.2",