Add app source for F-Droid release (v1.0.6)

Adds the full Android source tree, Gradle wrapper, fastlane store
metadata and the fdroiddata build recipe so F-Droid can build from
source. README gains build instructions and an updated structure tree.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015g6ECVSKcBG8CJPrqC3G5o

fastlane/metadata/android/en-US/changelogs/10006.txt

@@ -0,0 +1,8 @@
+• Fixed: IPv6 of all apps was blocked while connected
+• Switching servers no longer leaks DNS for a moment
+• Blocklist downloads run in the background and never block adding domains
+• dnsmasq and unbound blocklist formats
+• Private DNS warning shows only when it really interferes
+• Back returns to Home, text fields stay above the keyboard
+• Quick Settings tile updates instantly
+• Monitor filters fit narrow screens