v2.6.0 — Collab Overhaul, Route Travel Times & Chat Redesign

🎉 Collab — New Collaborative Add-On

💬 Live Chat (iMessage-style)

• Blue bubbles for own messages, grouped with date separators
• Emoji reactions via right-click (desktop) or double-tap (mobile)
• Apple-style emoji picker (Twemoji) with Smileys, Reactions & Travel categories
• Link previews with OG image, title & description
• Soft-deleted messages show "deleted a message" placeholder in history
• Real-time WebSocket sync for all chat features

📝 Collaborative Notes

• Note cards with colored header bar (booking-card style)
• 2-column grid (desktop), 1-column (mobile)
• Category settings modal — manage categories with colors
• File & image attachments with mini-preview thumbnails
• Website links with OG image preview
• Built-in file viewer (lightbox for images, inline for PDF/TXT)
• Note files automatically appear in the Files tab
• Pin highlighting with tinted background
• Author avatar with custom tooltip

📊 Polls

• Clean Apple-style poll cards with animated progress bars
• Blue check circles, voter avatars, percentage display
• Create poll modal with multi-choice toggle
• Active/Closed sections with real-time sync

⏭️ What's Next Widget

• Upcoming activities with time, participants & day grouping

🗺️ Route Travel Times

• Automatic walking + driving time calculation (OSRM, free)
• Floating badges on each route segment on the map
• Toggle on/off in Settings → Display
• Auto-hides when zoomed out

🔧 Other Improvements

• Collab enabled by default (no longer "Coming Soon")
• Tab state persists across page reloads
• Day sidebar collapse state remembered
• File extension badges (PDF, TXT) in Files tab
• "From Collab Notes" filter & badge in Files
• Dark mode invite button fix
• Mobile: optimized touch UI, no-icon tabs
• 6 backend data structure bug fixes
• 4 new database migrations (27–30)