diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 3144b0d..c918a9b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -444,20 +444,20 @@ jobs:
           merge-multiple: true
           path: ./binaries
 
-      - name: List downloaded binaries (debug)
+      - name: Prepare release files
         run: |
-          echo "Downloaded files:"
-          ls -la ./binaries || true        
+          mkdir -p ./release-files
+          find ./binaries -name "*.exe" -exec cp {} ./release-files/ \; || true
+          find ./binaries -name "*.deb" -exec cp {} ./release-files/ \; || true
+          find ./binaries -name "*.rpm" -exec cp {} ./release-files/ \; || true
+          find ./binaries -name "*.pkg.tar.*" -exec cp {} ./release-files/ \; || true
+        
       - name: Create Release
         uses: softprops/action-gh-release@v1
         with:
           tag_name: v${{ steps.version.outputs.version }}
           name: Release v${{ steps.version.outputs.version }}
-          files: |
-            ./binaries/android-file-handler.exe
-            ./binaries/android-file-handler_*.deb
-            ./binaries/android-file-handler-*.rpm
-            ./binaries/android-file-handler-*-x86_64.pkg.tar.*
+          files: ./release-files/*
           draft: false
           prerelease: false
         env:
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..294755e
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,137 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+A Python GUI tool for managing Android device files via ADB (Android Debug Bridge). The application automatically downloads ADB platform-tools if needed, detects connected devices, and provides a Tkinter-based interface for transferring files between Android devices and local systems.
+
+**Supported Platforms:** Windows, Linux (Debian, Arch, RHEL/Fedora)
+
+## Development Setup
+
+### Installation
+```sh
+poetry install
+```
+
+### Running the Application
+```sh
+poetry run python -m src.main
+```
+
+## Common Commands
+
+### Testing
+```sh
+# Run all tests
+poetry run pytest tests/ -v
+
+# Run tests with coverage
+poetry run pytest tests/ -v --cov
+
+# Run specific test file
+poetry run pytest tests/core/test_adb_manager.py -v
+```
+
+### Code Quality
+```sh
+# Format code with Black
+poetry run black src/ tests/
+
+# Lint with flake8
+poetry run flake8 src/ tests/
+
+# Type checking with mypy
+poetry run mypy src/
+```
+
+### Building and Packaging
+
+#### Local Development Build (Linux)
+```sh
+poetry run python scripts/build_package_linux.py
+```
+
+#### Platform-Specific Builds
+```sh
+# Windows executable (PyInstaller)
+poetry run pyinstaller scripts/spec_scripts/android-file-handler-windows.spec
+
+# Linux packages use distro-specific spec files:
+# - android-file-handler-debian.spec
+# - android-file-handler-arch.spec
+# - android-file-handler-rhel.spec
+```
+
+## Architecture
+
+### Directory Structure
+
+- **src/core/**: Core ADB functionality
+  - `adb_manager.py`: Main ADB interface and operations coordinator
+  - `adb_command.py`: Command execution wrapper
+  - `file_transfer.py`: File transfer logic
+  - `platform_tools.py`: ADB binary management and download
+  - `platform_utils.py`: Platform detection utilities
+  - `progress_tracker.py`: Transfer progress tracking
+
+- **src/gui/**: GUI components
+  - `main_window.py`: Main application window (entry point for GUI)
+  - `components/`: Reusable UI widgets (file browser, path selectors, etc.)
+  - `handlers/`: Event and animation handlers
+  - `dialogs/`: Dialog windows (license agreement, device instructions, etc.)
+
+- **src/managers/**: Business logic coordination
+  - `device_manager.py`: Device detection and management
+  - `transfer_manager.py`: Coordinates transfers between GUI and ADB manager
+
+- **src/utils/**: Utility modules
+  - `file_deduplication.py`: File deduplication logic
+
+- **scripts/**: Build and packaging scripts
+  - `build_package_linux.py`: Unified Linux packaging script (uses DISTRO_TYPE env var)
+  - `spec_scripts/`: PyInstaller spec files for each platform
+
+- **tests/**: Test suite mirroring src/ structure
+
+### Application Flow
+
+1. **Startup**: `src/main.py` → License check → `gui/main_window.py:main()`
+2. **ADB Setup**: ADBManager checks for platform-tools, downloads if needed
+3. **Device Detection**: DeviceManager checks for connected devices
+4. **File Transfer**: TransferManager coordinates UI updates with ADB file operations
+
+### Key Patterns
+
+- **Import Fallbacks**: Most modules use try/except for relative vs. direct imports to support both module and direct execution
+- **Manager Pattern**: Business logic separated into DeviceManager, TransferManager, ADBManager
+- **Component Composition**: GUI built from reusable components in `gui/components/`
+- **Threading**: File transfers run in background threads; UI updates via callbacks
+
+## CI/CD
+
+The project uses GitHub Actions for multi-platform builds (`.github/workflows/release.yml`):
+- Runs tests on Linux and Windows
+- Builds binaries for Windows, Debian, Arch, and RHEL
+- Packages using PyInstaller + fpm
+- Supports manual workflow dispatch with configurable jobs
+- Optional GitHub release creation and S3 upload
+
+## Coding Standards
+
+- Follow PEP 8 guidelines
+- Use type hints for all function parameters and return values
+- Write docstrings for all public modules, functions, and classes
+- Use f-strings for string formatting
+- No single-letter variable names except `e` for exceptions
+- Always run Python commands through Poetry
+- Do not recreate deleted files
+- Do not change user-facing text unless asked
+
+## Notes
+
+- **ADB Binaries**: Stored in `src/platform-tools/` - do not modify or delete
+- **Python Version**: Requires Python 3.12 (< 3.13)
+- **Package Mode**: Poetry is configured with `package-mode = false`
+- **License**: First-run license agreement required on Windows