MassDroid v1.3.0

• Audio focus: yields to other media apps, resumes when they stop
• Voice call detection: pauses during calls, resumes after hangup
• Bluetooth: disconnect grace period, handoff protection, auto-stop
• Network auto-resume: extracted coordinator with multi-tier retry strategy
• WebSocket race fixes: stale socket guards, debounced disconnect notify
• Auto-select phone speaker on app resume
• Security: WebView hardening, backup exclusions
• Update check respects 2h cooldown instead of checking every launch