🐛 fix(build): exclude AboutLibraries 'generated' timestamp for reproducibility

AboutLibraries 11.x writes a 'generated' timestamp into the embedded
license JSON. F-Droid maintainer flagged it as the only remaining diff
between our signed APK and their rebuild. The plugin defaults this off
in 14.x; we set it explicitly here to avoid a major-version bump.

Author: vitofico

app/build.gradle.kts

@@ -25,6 +25,14 @@ val versionInfo = Version.fromGitDescribe(
     fallback = System.getenv("QUIRE_VERSION_FALLBACK")
 )
 
+// Drop the build timestamp from the AboutLibraries-generated license JSON
+// so the resource is byte-identical across rebuilds (matters for F-Droid's
+// reproducible-build verification). Disabled by default in AboutLibraries
+// 14+; explicit on 11.x.
+aboutLibraries {
+    excludeFields = arrayOf("generated")
+}
+
 android {
     namespace = "io.theficos.quire"
     compileSdk = 34