feat: add LSPosed helper readme

Author: SayanthRock

lsposed-helper/README.md

@@ -0,0 +1,38 @@
+# ColorOS Themes LSPosed Helper
+
+Experimental customer helper APK for OPPO, OnePlus, and realme theme testing.
+
+## Current version
+
+`0.1.0`
+
+## What it does now
+
+- Opens a simple customer dashboard
+- Shows device information
+- Opens safe Android settings screens
+- Includes LSPosed module metadata
+- Includes a safe hook entry that logs only when safe hooks are enabled at build time
+
+## What it does not do yet
+
+- It does not force system theme changes
+- It does not modify third-party apps
+- It does not apply paid/protected theme files
+- It does not promise universal Android 15/16/17 support
+
+## Build APK
+
+From this folder:
+
+```bash
+gradle :app:assembleDebug
+```
+
+Output:
+
+```text
+app/build/outputs/apk/debug/app-debug.apk
+```
+
+GitHub Actions can build it automatically using `.github/workflows/build-lsposed-apk.yml`.