feat(ui): refine input states, add tokenized params & ripple effects

- Refactored Url Cleaner Exception 'Keep params' into a tokenized input array (pills/badges)
- Standardized UI contrast: ensured proper label highlighting in light/dark themes
- Expanded v-ripple interaction effect to buttons across all remaining tools, header, and modals
- Moved base .detail-tag styles into global CSS variables
- Web worker generation for QR codes (WIP)

src/components/InstallPrompt.vue

@@ -3,8 +3,8 @@
     <div class="prompt-content">
       <span class="prompt-text">Install app for faster access</span>
       <div class="prompt-actions">
-        <button @click="installPWA" class="install-btn">Install</button>
-        <button @click="dismissPrompt" class="dismiss-btn">✕</button>
+        <button @click="installPWA" class="install-btn" v-ripple>Install</button>
+        <button @click="dismissPrompt" class="dismiss-btn" v-ripple>✕</button>
       </div>
     </div>
   </div>