v3.1.2 - UI Polish & Fixes

✨ Added

• Notification Emojis & Redesign - Apprise notifications now use emoji titles (⬇️ ✅ 🏷️ 📦 🗑️), show client type in title with dot separator, and category with 🏷️ tag
• MobileStatusTabs Icons - Status filter pills now show icons from STATUS_DISPLAY_MAP
• CategoryModal qBittorrent Info - Path mapping section shows message that qBittorrent doesn't need mapping (uses native API)

🐛 Fixed

• qBittorrent Tracker Domain - Use pre-computed trackerDomain instead of re-extracting
• qBittorrent Downloaded Bytes - Use torrent.completed (verified bytes) instead of torrent.downloaded (includes overhead)
• Progress Precision - qBittorrent and rTorrent progress now shows 2 decimal places instead of integers
• aMule Downloaded Size - Completed shared files now correctly set downloaded = size
• External Download Category - Category detection now works for all clients
• Demo Mode Environment Variable - DEMO_MODE=true env var was overridden by config.json; now reads directly from process.env
• Website Stale Screenshots - Removed 12 stale screenshots, updated carousels
• Docs Sync Script - Screenshot sync now cleans destination before copying to prevent stale files