Update store description

Author: Wavesonics

fastlane/metadata/android/en-US/full_description.txt

@@ -8,6 +8,10 @@ Key Features:
 • Secure Sharing – When you do share, we hand the file off via Android's native share sheet—no detours.
 • Granular Location – Add coarse, fine, or zero location data—your call.
 • 100% Open Source – Auditable code in plain sight.
+• Poison Pill – Set a special PIN, that when entered, appears to work normally but actually deletes your existing
+  photos.
+• Decoy Photos – Select innocuous decoy photos, these will be preserved when your Poison Pill is activated. That way
+  your Gallery is not suspiciously empty.
 
 Why Snap Safe?
 We capture photos locally, encrypt everything in private storage, let YOU decide if GPS tags are added (precision optional), and strip out tell‑tale metadata automatically.