feat: add CI workflow and update README

- Add GitHub Actions CI workflow for analyze and tests
- Update README with project structure, build instructions, and license info
- Document iperf3 binary bundling process

.github/workflows/ci.yaml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  analyze:
+    name: Analyze & Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: '3.47.1'
+          channel: 'stable'
+
+      - name: Get dependencies
+        run: flutter pub get
+
+      - name: Analyze
+        run: flutter analyze
+
+      - name: Run tests
+        run: flutter test

README.md

@@ -1,2 +1,66 @@
 # iperf3-gui
 
+A Flutter-based Android GUI wrapper for iperf3, the popular network performance measurement tool.
+
+## Features
+
+- Client-mode network throughput testing
+- Simple UI: enter server address, port, and press GO
+- Raw iperf3 output display
+- Bundled iperf3 v3.21 binaries for arm64-v8a and armeabi-v7a
+
+## Architecture
+
+```
+lib/
+├── domain/
+│   ├── models/          # TestConfiguration, Iperf3Result
+│   └── services/        # Iperf3Service (Process runner)
+├── ui/
+│   └── features/
+│       └── test_run/    # TestRunScreen, TestRunViewModel
+├── main.dart            # App entry point
+└── pubspec.yaml         # Dependencies: provider, path_provider
+```
+
+## Building
+
+Prerequisites:
+- Flutter 3.47+ 
+- Android SDK with platform android-36
+- JDK 17
+
+```bash
+flutter create . --org novoyuuparosk --project-name iperf3gui
+flutter pub get
+flutter analyze
+flutter build apk --debug
+```
+
+### Building iperf3 binaries
+
+To rebuild the bundled iperf3 binaries, use the NDK:
+
+```bash
+cd /tmp
+wget https://github.com/esnet/iperf/archive/refs/tags/3.21.tar.gz
+tar -xzf 3.21.tar.gz
+cd iperf-3.21
+
+# Configure for Android arm64-v8a
+./configure --host=aarch64-linux-android \
+  --with-openssl=/opt/android-sdk/ndk/27.0.12077973/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr \
+  --disable-sctp
+
+# Build
+make CC=aarch64-linux-android21-clang \
+     AR=aarch64-linux-android-ar \
+     AR=aarch64-linux-android-ld
+
+# Copy to project
+cp src/iperf3 /path/to/iperf3-gui/assets/iperf3/arm64-v8a/iperf3
+```
+
+## License
+
+MIT — bundled iperf3 v3.21 is BSD-3-Clause licensed.

assets/iperf3/arm64-v8a/iperf3

@@ -0,0 +1 @@
+404: Not Found