chore: gitignore gradle/verification-metadata.xml

F-Droid generates this on their build server via
gradlew-fdroid --write-verification-metadata; a locally committed
copy can conflict with their reproducible-build process. Keep it
local-only.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: thatSFguy

.gitignore

@@ -2,6 +2,10 @@
 .gradle/
 build/
 local.properties
+# F-Droid generates this on their build server (gradlew-fdroid
+# --write-verification-metadata). Committing our own can conflict
+# with their reproducible-build process — keep it local.
+gradle/verification-metadata.xml
 
 # IDE
 .idea/