Split icon set into install/verify/structure icons, add sections

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015g6ECVSKcBG8CJPrqC3G5o

README.md

@@ -21,3 +21,33 @@ The app starts a local VPN that captures only DNS traffic and forwards every que
 - 📱 **Per-app DNS** — chosen apps bypass the tunnel
 - 🚫 **Custom blocklists** — your own domains plus hosts/domain/AdBlock lists by URL (HaGeZi Pro++ and TIF presets)
 - 🔓 **No analytics, no Google Play Services**
+
+## Installation
+
+<img src="assets/icon-install.png" width="36" align="left">
+
+1. Download the APK for the version you want from the [Releases page](https://github.com/kalarina-bit/Sparkledns/releases).
+2. On your Android device, allow installs from unknown sources for the app you use to open the file (Settings → Apps → Special access → Install unknown apps).
+3. Open the downloaded `.apk` file and confirm the install.
+
+## Verifying a download
+
+<img src="assets/icon-verify.png" width="36" align="left">
+
+Compare the SHA-256 checksum of the downloaded APK against the value shown for that version on the [Releases page](https://github.com/kalarina-bit/Sparkledns/releases):
+
+```sh
+sha256sum Sparkledns-vX.X.X.apk
+```
+
+## Repository structure
+
+<img src="assets/icon-structure.png" width="36" align="left">
+
+```
+.
+├── assets/     # Icon images
+└── README.md
+```
+
+APK builds are published as assets on the [Releases page](https://github.com/kalarina-bit/Sparkledns/releases), not stored in this repository.