v1.5.0

New Features:

• 📢 Broadcast messaging — compose one-time and recurring broadcasts (every minute/hour/daily/weekly/monthly) to selected contacts
• 👥 Recipient selection with "Select all", plus live send progress via websocket notifications
• 📤 JSON export of all broadcasts with a compact payload (null/empty fields stripped)
• 🔗 LID→PN contact resolution so LID-stored contacts can receive messages
• 📱 Responsive mobile layout for the broadcast composer and list

Bug Fixes:

• Corrected recipient-count aggregation (no longer double-counts child runs)
• Settings import/export tests made version-agnostic so they survive version bumps

Improvements:

• Recurring interval column added (migration 0021) to support "every N minutes/hours"