Ensure R8 keeps methods called externally by Shizuku (#3676)

* Ensure R8 keeps methods called externally by Shizuku

* Changelog

CHANGELOG.md

@@ -14,6 +14,9 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 ### Added
 - Add Category filtering for the Updates tab ([@MajorTanya](https://github.com/MajorTanya)) ([#3589](https://github.com/mihonapp/mihon/pull/3589))
 
+### Fixed
+- Fixed extension installation with shizuku installer ([@NGB-Was-Taken](https://github.com/NGB-Was-Taken)) ([#3676](https://github.com/mihonapp/mihon/pull/3676))
+
 ## [v0.20.2] - 2026-08-01
 ### Added
 - Support resumable image downloads if supported by source ([@xMohnad](https://github.com/xMohnad)) ([#3167](https://github.com/mihonapp/mihon/pull/3167))

app/proguard-rules.pro

@@ -89,3 +89,9 @@
 
 # KotlinX Datetime
 -keep,allowoptimization class kotlinx.datetime.** { public protected *; }
+
+# Methods called by Shizuku only
+-keepclassmembers class mihon.app.shizuku.ShellInterface {
+    public <init>();
+    public void destroy();
+}