Refactor: Remove blanket coroutines keep rule from ProGuard (#80)

app/proguard-rules.pro

@@ -1,7 +1,7 @@
 # ── Kotlin / Coroutines ─────────────────────────────────────────────────
--keepclassmembers class kotlinx.coroutines.** { *; }
 -dontwarn kotlinx.coroutines.**
 
+
 # ── Room ─────────────────────────────────────────────────────────────────
 -keep class * extends androidx.room.RoomDatabase { *; }
 -keep @androidx.room.Entity class * { *; }