feat: complete UI redesign with DaisyUI + Tailwind CSS v4

Design system overhaul using DaisyUI v5 on Tailwind CSS v4:

- Custom 'ohmstream' dark theme with orange primary (#FF9F1C),
  magenta secondary, gold accent matching existing palette
- Tailwind CSS-first config (input.css source, style.css built output)
- DaisyUI components: navbar, drawer, cards, badges, alerts, tables,
  progress bars, tabs, toggles, stats, form controls, tooltips
- Mobile-first responsive layout with drawer navigation
- Eliminated ~500+ lines of embedded CSS across 15+ template files
- Removed all inline style spam from admin_panel and settings_section
- Preserved all HTMX triggers, Alpine.js state, and Jinja2 logic
- Updated auth-ui.js for DaisyUI tab-active class compatibility

Build: npm run build:css (minified) / npm run watch:css (dev)

package.json

@@ -4,12 +4,17 @@
   "description": "Ohm Stream Downloader - Frontend JavaScript Tests",
   "type": "module",
   "scripts": {
+    "build:css": "npx @tailwindcss/cli -i static/css/input.css -o static/css/style.css --minify",
+    "watch:css": "npx @tailwindcss/cli -i static/css/input.css -o static/css/style.css",
     "test": "vitest run",
     "test:watch": "vitest"
   },
   "devDependencies": {
     "@playwright/test": "^1.58.2",
+    "@tailwindcss/cli": "^4.2.2",
+    "daisyui": "^5.5.19",
     "jsdom": "^29.0.0",
+    "tailwindcss": "^4.2.2",
     "vitest": "^1.0.0"
   }
 }