M0: project scaffold (Gradle 9.3.1 / AGP 9.1.0, Compose shell, storage permissions)

app/proguard-rules.pro

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+# ProGuard/R8 rules for the release build.
+#
+# The app relies on reflection only indirectly (Compose, Coil, AndroidX ship their
+# own consumer rules), so we keep this list intentionally short.
+
+# Keep line numbers so crash reports stay readable without the original class names.
+-keepattributes SourceFile,LineNumberTable
+-renamesourcefileattribute SourceFile
+
+# Coroutines: keep the internal classes R8 sometimes struggles to strip correctly.
+-dontwarn kotlinx.coroutines.**
+
+# Commons Compress discovers codecs and archive formats reflectively in a few
+# places; keep the annotated and provider classes so extraction keeps working
+# after shrinking.
+-keep class org.apache.commons.compress.** { *; }
+-dontwarn org.apache.commons.compress.**