Initial implementation of GithubWorkflowTool

Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>

.gitignore

@@ -39,3 +39,40 @@
 
 # debug information files
 *.dwo
+
+# Build directories
+build/
+build-*/
+cmake-build-*/
+
+# Conan
+conan.lock
+conaninfo.txt
+conanbuildinfo.*
+graph_info.json
+
+# CMake
+CMakeCache.txt
+CMakeFiles/
+cmake_install.cmake
+Makefile
+*.cmake
+
+# Qt
+*.qm
+*.pro.user
+*.autosave
+moc_*.cpp
+ui_*.h
+qrc_*.cpp
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db

BUILD.md

@@ -0,0 +1,135 @@
+# Building GithubWorkflowTool
+
+## Prerequisites
+
+### Required Dependencies
+- CMake 3.22 or higher
+- Ninja build system
+- Conan 2.x package manager
+- Qt 6.6.1 or higher
+- C++17 compatible compiler (GCC 9+, Clang 10+, MSVC 2019+)
+- Git
+
+### Optional Dependencies
+- Docker or Podman (for container backend)
+- QEMU (for VM backend)
+
+## Installing Dependencies
+
+### Ubuntu/Debian
+```bash
+sudo apt update
+sudo apt install cmake ninja-build python3-pip git
+pip3 install conan
+```
+
+### Windows
+1. Install CMake from https://cmake.org/download/
+2. Install Ninja from https://github.com/ninja-build/ninja/releases
+3. Install Python and pip: https://www.python.org/downloads/
+4. Install Conan: `pip install conan`
+5. Install Git: https://git-scm.com/download/win
+
+## Building the Project
+
+1. Clone the repository:
+```bash
+git clone https://github.com/johndoe6345789/GithubWorkflowTool.git
+cd GithubWorkflowTool
+```
+
+2. Configure Conan (first time only):
+```bash
+conan profile detect --force
+```
+
+3. Install dependencies:
+```bash
+conan install . --output-folder=build --build=missing
+```
+
+4. Configure the project:
+```bash
+cmake --preset=default
+```
+
+5. Build:
+```bash
+cmake --build build
+```
+
+## Running the Application
+
+### CLI
+```bash
+./build/gwt --help
+```
+
+### GUI
+```bash
+./build/gwt-gui
+```
+
+## Usage Examples
+
+### Clone a repository
+```bash
+./build/gwt clone https://github.com/user/repo
+```
+
+### List cloned repositories
+```bash
+./build/gwt list
+```
+
+### Discover workflows
+```bash
+./build/gwt workflows /path/to/cloned/repo
+```
+
+### Run a workflow
+```bash
+./build/gwt run /path/to/cloned/repo /path/to/cloned/repo/.github/workflows/ci.yml
+```
+
+### Run with QEMU backend
+```bash
+./build/gwt run /path/to/cloned/repo /path/to/cloned/repo/.github/workflows/ci.yml --qemu
+```
+
+## Development
+
+### Debug Build
+```bash
+conan install . --output-folder=build-debug --build=missing -s build_type=Debug
+cmake --preset=debug
+cmake --build build-debug
+```
+
+### Clean Build
+```bash
+rm -rf build build-debug
+```
+
+## Troubleshooting
+
+### Qt not found
+Make sure Qt 6 is properly installed and Conan can find it:
+```bash
+conan search qt --remote=conancenter
+```
+
+### yaml-cpp not found
+Install yaml-cpp through Conan:
+```bash
+conan install yaml-cpp/0.8.0@
+```
+
+### Build errors
+Try cleaning and rebuilding:
+```bash
+rm -rf build
+conan install . --output-folder=build --build=missing
+cmake --preset=default
+cmake --build build
+```

CMakeLists.txt

@@ -0,0 +1,73 @@
+cmake_minimum_required(VERSION 3.22)
+project(GithubWorkflowTool VERSION 0.1.0 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+# Conan integration
+include(${CMAKE_BINARY_DIR}/conan_toolchain.cmake OPTIONAL)
+
+# Find Qt6
+find_package(Qt6 REQUIRED COMPONENTS Core Widgets)
+qt_standard_project_setup()
+
+# Find yaml-cpp for workflow parsing
+find_package(yaml-cpp REQUIRED)
+
+# Source files
+set(CORE_SOURCES
+    src/core/StorageProvider.cpp
+    src/core/RepoManager.cpp
+    src/core/WorkflowDiscovery.cpp
+    src/core/WorkflowParser.cpp
+    src/core/JobExecutor.cpp
+    src/core/MatrixStrategy.cpp
+    src/core/ArtifactManager.cpp
+    src/core/CacheManager.cpp
+)
+
+set(BACKEND_SOURCES
+    src/backends/ContainerBackend.cpp
+    src/backends/QemuBackend.cpp
+)
+
+set(CLI_SOURCES
+    src/cli/main.cpp
+    src/cli/CommandHandler.cpp
+)
+
+set(GUI_SOURCES
+    src/gui/MainWindow.cpp
+    src/gui/WorkflowView.cpp
+    src/gui/JobView.cpp
+    src/gui/main.cpp
+)
+
+# Core library
+add_library(gwt_core STATIC ${CORE_SOURCES} ${BACKEND_SOURCES})
+target_include_directories(gwt_core PUBLIC 
+    ${CMAKE_CURRENT_SOURCE_DIR}/include
+)
+target_link_libraries(gwt_core PUBLIC 
+    Qt6::Core
+    yaml-cpp
+)
+
+# CLI executable
+add_executable(gwt_cli ${CLI_SOURCES})
+target_link_libraries(gwt_cli PRIVATE gwt_core Qt6::Core)
+set_target_properties(gwt_cli PROPERTIES OUTPUT_NAME "gwt")
+
+# GUI executable
+add_executable(gwt_gui ${GUI_SOURCES})
+target_link_libraries(gwt_gui PRIVATE gwt_core Qt6::Core Qt6::Widgets)
+set_target_properties(gwt_gui PROPERTIES 
+    OUTPUT_NAME "gwt-gui"
+    WIN32_EXECUTABLE TRUE
+)
+
+# Installation
+install(TARGETS gwt_cli gwt_gui
+    RUNTIME DESTINATION bin
+)

CMakePresets.json

@@ -0,0 +1,35 @@
+{
+  "version": 3,
+  "configurePresets": [
+    {
+      "name": "default",
+      "displayName": "Default Config",
+      "description": "Default build using Ninja",
+      "generator": "Ninja",
+      "binaryDir": "${sourceDir}/build",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release"
+      }
+    },
+    {
+      "name": "debug",
+      "displayName": "Debug Config",
+      "description": "Debug build using Ninja",
+      "generator": "Ninja",
+      "binaryDir": "${sourceDir}/build-debug",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug"
+      }
+    }
+  ],
+  "buildPresets": [
+    {
+      "name": "default",
+      "configurePreset": "default"
+    },
+    {
+      "name": "debug",
+      "configurePreset": "debug"
+    }
+  ]
+}

README.md

@@ -1,2 +1,117 @@
 # GithubWorkflowTool
-Clone a repo to APPDATA/XDG and locally simulate its github workflows. It should use C++/QT6/Conan/Ninja/QEmu Github Workflows.
+
+A cross-platform desktop application that clones Git repositories to per-user cache directories and simulates GitHub Actions workflows locally.
+
+## Features
+
+- **Repository Management**: Clone repositories to platform-specific cache directories
+  - Windows: `%APPDATA%\GithubWorkflowTool\repos\`
+  - Linux: `$XDG_DATA_HOME/githubworkflowtool/repos/` or `~/.local/share/githubworkflowtool/repos/`
+
+- **Workflow Simulation**: Discover and execute GitHub Actions workflows locally
+  - Automatic discovery of `.github/workflows/*.yml` files
+  - Support for jobs, steps, needs, env variables, and outputs
+  - Matrix strategy expansion
+  - Artifacts upload/download (local equivalent)
+  - Caching support (local equivalent of actions/cache)
+
+- **Multiple Execution Backends**:
+  - **Container Backend**: Fast iteration using Docker or Podman
+  - **QEMU Backend**: Higher fidelity VM-based execution
+
+- **Dual Interface**:
+  - **CLI**: Command-line interface for automation and scripting
+  - **GUI**: Qt6-based graphical interface for visual inspection and interaction
+
+## Technology Stack
+
+- C++17
+- Qt 6.6+
+- CMake 3.22+
+- Conan package manager
+- Ninja build system
+- yaml-cpp for workflow parsing
+- Docker/Podman (optional, for container backend)
+- QEMU (optional, for VM backend)
+
+## Quick Start
+
+See [BUILD.md](BUILD.md) for detailed build instructions.
+
+```bash
+# Install dependencies
+conan install . --output-folder=build --build=missing
+
+# Build
+cmake --preset=default
+cmake --build build
+
+# Run CLI
+./build/gwt clone https://github.com/user/repo
+./build/gwt workflows /path/to/repo
+./build/gwt run /path/to/repo /path/to/workflow.yml
+
+# Run GUI
+./build/gwt-gui
+```
+
+## Architecture
+
+### Core Components
+
+- **StorageProvider**: Platform-specific storage path management
+- **RepoManager**: Git repository cloning and management
+- **WorkflowDiscovery**: Workflow file discovery
+- **WorkflowParser**: YAML workflow parsing
+- **JobExecutor**: Workflow execution orchestration
+- **MatrixStrategy**: Matrix strategy expansion
+- **ArtifactManager**: Artifact upload/download
+- **CacheManager**: Cache management
+
+### Backends
+
+- **ContainerBackend**: Executes workflows in Docker/Podman containers
+- **QemuBackend**: Executes workflows in QEMU virtual machines
+
+## Repository Structure
+
+```
+GithubWorkflowTool/
+├── CMakeLists.txt          # Main CMake configuration
+├── conanfile.txt           # Conan dependencies
+├── CMakePresets.json       # CMake presets
+├── include/                # Public headers
+│   ├── core/              # Core functionality headers
+│   ├── backends/          # Execution backend headers
+│   ├── cli/               # CLI headers
+│   └── gui/               # GUI headers
+├── src/                    # Implementation files
+│   ├── core/              # Core functionality
+│   ├── backends/          # Execution backends
+│   ├── cli/               # CLI implementation
+│   └── gui/               # GUI implementation
+├── BUILD.md               # Build instructions
+└── README.md              # This file
+```
+
+## Supported Platforms
+
+- Windows 11+
+- Linux (Ubuntu/Debian-based distributions)
+- macOS (host support; VM images may have limitations)
+
+## Limitations (v1)
+
+- Not all GitHub Actions features are supported
+- Some third-party actions may require container mode or preinstalled tools
+- Service containers not yet implemented
+- macOS runner images not supported
+- Network access in runners may be limited
+
+## License
+
+See [LICENSE](LICENSE) file for details.
+
+## Contributing
+
+Contributions are welcome! Please ensure your code follows the existing style and includes appropriate tests.

conanfile.txt

@@ -0,0 +1,17 @@
+[requires]
+qt/6.6.1
+yaml-cpp/0.8.0
+
+[generators]
+CMakeToolchain
+CMakeDeps
+
+[options]
+qt/*:shared=True
+qt/*:qttools=True
+qt/*:qtdeclarative=False
+qt/*:qtquickcontrols2=False
+yaml-cpp/*:shared=False
+
+[layout]
+cmake_layout

include/backends/ContainerBackend.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include "ExecutionBackend.h"
+
+namespace gwt {
+namespace backends {
+
+/**
+ * @brief Container-based execution backend (using Docker or Podman)
+ */
+class ContainerBackend : public ExecutionBackend {
+    Q_OBJECT
+
+public:
+    explicit ContainerBackend(QObject* parent = nullptr);
+    ~ContainerBackend() override;
+
+    bool executeStep(const core::WorkflowStep& step,
+                    const QVariantMap& context) override;
+
+    bool prepareEnvironment(const QString& runsOn) override;
+
+    void cleanup() override;
+
+private:
+    QString m_containerId;
+    QString m_containerRuntime;  // "docker" or "podman"
+    
+    /**
+     * @brief Detect available container runtime
+     */
+    bool detectRuntime();
+    
+    /**
+     * @brief Map GitHub runner spec to container image
+     */
+    QString mapRunsOnToImage(const QString& runsOn) const;
+};
+
+} // namespace backends
+} // namespace gwt

include/backends/ExecutionBackend.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include "core/WorkflowParser.h"
+#include <QObject>
+#include <QString>
+
+namespace gwt {
+namespace backends {
+
+/**
+ * @brief Base class for execution backends
+ */
+class ExecutionBackend : public QObject {
+    Q_OBJECT
+
+public:
+    explicit ExecutionBackend(QObject* parent = nullptr);
+    ~ExecutionBackend() override;
+
+    /**
+     * @brief Execute a job step
+     * @param step The step to execute
+     * @param context Execution context (env vars, working dir, etc.)
+     * @return true if successful
+     */
+    virtual bool executeStep(const core::WorkflowStep& step,
+                            const QVariantMap& context) = 0;
+
+    /**
+     * @brief Prepare the execution environment
+     * @param runsOn The runner specification (ubuntu-latest, etc.)
+     * @return true if successful
+     */
+    virtual bool prepareEnvironment(const QString& runsOn) = 0;
+
+    /**
+     * @brief Cleanup the execution environment
+     */
+    virtual void cleanup() = 0;
+
+signals:
+    void output(const QString& text);
+    void error(const QString& errorMessage);
+};
+
+} // namespace backends
+} // namespace gwt

include/backends/QemuBackend.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include "ExecutionBackend.h"
+
+namespace gwt {
+namespace backends {
+
+/**
+ * @brief QEMU VM-based execution backend for higher fidelity
+ */
+class QemuBackend : public ExecutionBackend {
+    Q_OBJECT
+
+public:
+    explicit QemuBackend(QObject* parent = nullptr);
+    ~QemuBackend() override;
+
+    bool executeStep(const core::WorkflowStep& step,
+                    const QVariantMap& context) override;
+
+    bool prepareEnvironment(const QString& runsOn) override;
+
+    void cleanup() override;
+
+private:
+    QString m_vmId;
+    QString m_qemuPath;
+    
+    /**
+     * @brief Find QEMU executable
+     */
+    bool detectQemu();
+    
+    /**
+     * @brief Map GitHub runner spec to VM image
+     */
+    QString mapRunsOnToVMImage(const QString& runsOn) const;
+    
+    /**
+     * @brief Start the VM
+     */
+    bool startVM(const QString& imagePath);
+    
+    /**
+     * @brief Stop the VM
+     */
+    void stopVM();
+};
+
+} // namespace backends
+} // namespace gwt

include/cli/CommandHandler.h

@@ -0,0 +1,44 @@
+#pragma once
+
+#include <QObject>
+#include <QStringList>
+#include <memory>
+
+namespace gwt {
+namespace core {
+class RepoManager;
+class JobExecutor;
+}
+
+namespace cli {
+
+/**
+ * @brief Handles command-line interface commands
+ */
+class CommandHandler : public QObject {
+    Q_OBJECT
+
+public:
+    explicit CommandHandler(QObject* parent = nullptr);
+    ~CommandHandler() override;
+
+    /**
+     * @brief Execute a command with arguments
+     * @param args Command line arguments
+     * @return Exit code
+     */
+    int execute(const QStringList& args);
+
+private:
+    std::unique_ptr<core::RepoManager> m_repoManager;
+    std::unique_ptr<core::JobExecutor> m_executor;
+
+    void printHelp() const;
+    int handleClone(const QStringList& args);
+    int handleList(const QStringList& args);
+    int handleRun(const QStringList& args);
+    int handleWorkflows(const QStringList& args);
+};
+
+} // namespace cli
+} // namespace gwt

include/core/ArtifactManager.h

@@ -0,0 +1,58 @@
+#pragma once
+
+#include <QString>
+#include <QObject>
+
+namespace gwt {
+namespace core {
+
+/**
+ * @brief Manages workflow artifacts (upload/download)
+ */
+class ArtifactManager : public QObject {
+    Q_OBJECT
+
+public:
+    explicit ArtifactManager(QObject* parent = nullptr);
+    ~ArtifactManager() override;
+
+    /**
+     * @brief Upload an artifact
+     * @param name Artifact name
+     * @param path Path to artifact file or directory
+     * @param workflowId Associated workflow ID
+     * @return true if successful
+     */
+    bool uploadArtifact(const QString& name, 
+                       const QString& path,
+                       const QString& workflowId);
+
+    /**
+     * @brief Download an artifact
+     * @param name Artifact name
+     * @param workflowId Associated workflow ID
+     * @param destinationPath Where to download the artifact
+     * @return true if successful
+     */
+    bool downloadArtifact(const QString& name,
+                         const QString& workflowId,
+                         const QString& destinationPath);
+
+    /**
+     * @brief List all artifacts for a workflow
+     * @param workflowId The workflow ID
+     * @return List of artifact names
+     */
+    QStringList listArtifacts(const QString& workflowId) const;
+
+signals:
+    void uploadProgress(int percentage);
+    void downloadProgress(int percentage);
+    void error(const QString& errorMessage);
+
+private:
+    QString getArtifactPath(const QString& name, const QString& workflowId) const;
+};
+
+} // namespace core
+} // namespace gwt

include/core/CacheManager.h

@@ -0,0 +1,64 @@
+#pragma once
+
+#include <QString>
+#include <QStringList>
+#include <QObject>
+
+namespace gwt {
+namespace core {
+
+/**
+ * @brief Manages workflow caching (actions/cache equivalent)
+ */
+class CacheManager : public QObject {
+    Q_OBJECT
+
+public:
+    explicit CacheManager(QObject* parent = nullptr);
+    ~CacheManager() override;
+
+    /**
+     * @brief Save paths to cache with a key
+     * @param key Cache key
+     * @param paths Paths to cache
+     * @return true if successful
+     */
+    bool saveCache(const QString& key, const QStringList& paths);
+
+    /**
+     * @brief Restore cached paths
+     * @param key Cache key
+     * @param paths Paths to restore to
+     * @return true if cache hit and restored
+     */
+    bool restoreCache(const QString& key, const QStringList& paths);
+
+    /**
+     * @brief Check if a cache key exists
+     * @param key Cache key
+     * @return true if exists
+     */
+    bool hasCache(const QString& key) const;
+
+    /**
+     * @brief Clear all caches
+     */
+    void clearAll();
+
+    /**
+     * @brief Clear specific cache entry
+     * @param key Cache key
+     */
+    void clearCache(const QString& key);
+
+signals:
+    void cacheHit(const QString& key);
+    void cacheMiss(const QString& key);
+    void error(const QString& errorMessage);
+
+private:
+    QString getCachePath(const QString& key) const;
+};
+
+} // namespace core
+} // namespace gwt

include/core/JobExecutor.h

@@ -0,0 +1,71 @@
+#pragma once
+
+#include "WorkflowParser.h"
+#include <QObject>
+#include <memory>
+
+namespace gwt {
+namespace backends {
+class ExecutionBackend;
+}
+
+namespace core {
+
+/**
+ * @brief Executes workflow jobs and manages their lifecycle
+ */
+class JobExecutor : public QObject {
+    Q_OBJECT
+
+public:
+    explicit JobExecutor(QObject* parent = nullptr);
+    ~JobExecutor() override;
+
+    /**
+     * @brief Execute a complete workflow
+     * @param workflow The workflow to execute
+     * @param triggerEvent The event that triggered the workflow
+     * @param useQemu Use QEMU backend instead of container backend
+     * @return true if execution started successfully
+     */
+    bool executeWorkflow(const Workflow& workflow, 
+                        const QString& triggerEvent,
+                        bool useQemu = false);
+
+    /**
+     * @brief Stop execution of current workflow
+     */
+    void stopExecution();
+
+    /**
+     * @brief Check if execution is currently running
+     * @return true if running
+     */
+    bool isRunning() const;
+
+signals:
+    void jobStarted(const QString& jobId);
+    void jobFinished(const QString& jobId, bool success);
+    void stepStarted(const QString& jobId, const QString& stepName);
+    void stepFinished(const QString& jobId, const QString& stepName, bool success);
+    void stepOutput(const QString& jobId, const QString& stepName, const QString& output);
+    void executionFinished(bool success);
+    void error(const QString& errorMessage);
+
+private:
+    bool m_running;
+    std::unique_ptr<backends::ExecutionBackend> m_backend;
+    
+    /**
+     * @brief Execute a single job
+     */
+    bool executeJob(const WorkflowJob& job);
+    
+    /**
+     * @brief Resolve job dependencies (needs)
+     */
+    QStringList resolveJobOrder(const Workflow& workflow) const;
+};
+
+} // namespace core
+} // namespace gwt

include/core/MatrixStrategy.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <QVariantMap>
+#include <QList>
+
+namespace gwt {
+namespace core {
+
+struct WorkflowJob;
+
+/**
+ * @brief Handles matrix strategy expansion for workflow jobs
+ */
+class MatrixStrategy {
+public:
+    MatrixStrategy();
+    ~MatrixStrategy();
+
+    /**
+     * @brief Expand a job with matrix strategy into multiple jobs
+     * @param job The job with matrix strategy
+     * @return List of expanded jobs
+     */
+    QList<WorkflowJob> expandMatrix(const WorkflowJob& job) const;
+
+    /**
+     * @brief Check if a job has a matrix strategy
+     * @param job The job to check
+     * @return true if matrix strategy is present
+     */
+    bool hasMatrix(const WorkflowJob& job) const;
+
+private:
+    /**
+     * @brief Generate all combinations from matrix variables
+     */
+    QList<QVariantMap> generateCombinations(const QVariantMap& matrix) const;
+};
+
+} // namespace core
+} // namespace gwt

include/core/RepoManager.h

@@ -0,0 +1,68 @@
+#pragma once
+
+#include <QString>
+#include <QStringList>
+#include <QObject>
+#include <memory>
+
+namespace gwt {
+namespace core {
+
+class StorageProvider;
+
+/**
+ * @brief Manages Git repository cloning and operations
+ */
+class RepoManager : public QObject {
+    Q_OBJECT
+
+public:
+    explicit RepoManager(QObject* parent = nullptr);
+    ~RepoManager() override;
+
+    /**
+     * @brief Clone a repository to the local storage
+     * @param repoUrl The repository URL (e.g., https://github.com/owner/repo)
+     * @param branch Optional branch to clone (default: main/master)
+     * @return true if successful
+     */
+    bool cloneRepository(const QString& repoUrl, const QString& branch = QString());
+
+    /**
+     * @brief Update an existing repository
+     * @param repoUrl The repository URL
+     * @return true if successful
+     */
+    bool updateRepository(const QString& repoUrl);
+
+    /**
+     * @brief Get the local path for a repository
+     * @param repoUrl The repository URL
+     * @return Local file system path
+     */
+    QString getLocalPath(const QString& repoUrl) const;
+
+    /**
+     * @brief Check if a repository is already cloned
+     * @param repoUrl The repository URL
+     * @return true if already cloned
+     */
+    bool isCloned(const QString& repoUrl) const;
+
+    /**
+     * @brief List all cloned repositories
+     * @return List of repository URLs
+     */
+    QStringList listRepositories() const;
+
+signals:
+    void cloneProgress(int percentage, const QString& message);
+    void cloneFinished(bool success);
+    void error(const QString& errorMessage);
+
+private:
+    StorageProvider& m_storage;
+};
+
+} // namespace core
+} // namespace gwt

include/core/StorageProvider.h

@@ -0,0 +1,66 @@
+#pragma once
+
+#include <QString>
+#include <QDir>
+
+namespace gwt {
+namespace core {
+
+/**
+ * @brief Provides platform-specific storage paths for repository management
+ * 
+ * Windows: %APPDATA%\GithubWorkflowTool\repos\
+ * Linux: $XDG_DATA_HOME/githubworkflowtool/repos/ or ~/.local/share/githubworkflowtool/repos/
+ * Cache: $XDG_CACHE_HOME/githubworkflowtool/ or ~/.cache/githubworkflowtool/
+ */
+class StorageProvider {
+public:
+    /**
+     * @brief Get the singleton instance
+     */
+    static StorageProvider& instance();
+
+    /**
+     * @brief Get the root directory for repository storage
+     * @return Path to repository storage root
+     */
+    QString getRepoStorageRoot() const;
+
+    /**
+     * @brief Get the cache directory
+     * @return Path to cache directory
+     */
+    QString getCacheRoot() const;
+
+    /**
+     * @brief Get the directory for a specific repository
+     * @param repoUrl The repository URL
+     * @return Path to the repository's local storage
+     */
+    QString getRepoDirectory(const QString& repoUrl) const;
+
+    /**
+     * @brief Ensure storage directories exist
+     * @return true if directories were created or already exist
+     */
+    bool ensureDirectoriesExist();
+
+private:
+    StorageProvider();
+    ~StorageProvider() = default;
+    StorageProvider(const StorageProvider&) = delete;
+    StorageProvider& operator=(const StorageProvider&) = delete;
+
+    /**
+     * @brief Generate a normalized repository key from URL
+     * @param repoUrl The repository URL
+     * @return Normalized key (host/owner/name + hash)
+     */
+    QString generateRepoKey(const QString& repoUrl) const;
+
+    QString m_repoRoot;
+    QString m_cacheRoot;
+};
+
+} // namespace core
+} // namespace gwt

include/core/WorkflowDiscovery.h

@@ -0,0 +1,44 @@
+#pragma once
+
+#include <QString>
+#include <QStringList>
+#include <QObject>
+
+namespace gwt {
+namespace core {
+
+/**
+ * @brief Discovers GitHub workflow files in a repository
+ */
+class WorkflowDiscovery : public QObject {
+    Q_OBJECT
+
+public:
+    explicit WorkflowDiscovery(QObject* parent = nullptr);
+    ~WorkflowDiscovery() override;
+
+    /**
+     * @brief Discover workflow files in a repository
+     * @param repoPath Local path to the repository
+     * @return List of workflow file paths
+     */
+    QStringList discoverWorkflows(const QString& repoPath) const;
+
+    /**
+     * @brief Check if a path contains valid workflow files
+     * @param repoPath Local path to check
+     * @return true if workflows exist
+     */
+    bool hasWorkflows(const QString& repoPath) const;
+
+private:
+    /**
+     * @brief Validate that a file is a proper YAML workflow
+     * @param filePath Path to the YAML file
+     * @return true if valid
+     */
+    bool isValidWorkflow(const QString& filePath) const;
+};
+
+} // namespace core
+} // namespace gwt

include/core/WorkflowParser.h

@@ -0,0 +1,84 @@
+#pragma once
+
+#include <QString>
+#include <QVariantMap>
+#include <QStringList>
+#include <memory>
+
+namespace gwt {
+namespace core {
+
+/**
+ * @brief Represents a workflow step
+ */
+struct WorkflowStep {
+    QString name;
+    QString id;
+    QString run;                    // Shell command
+    QString uses;                   // Action to use (e.g., actions/checkout@v3)
+    QVariantMap with;               // Parameters for the action
+    QVariantMap env;                // Environment variables
+    QString workingDirectory;
+    QString shell;
+    QString ifCondition;            // Conditional execution
+};
+
+/**
+ * @brief Represents a workflow job
+ */
+struct WorkflowJob {
+    QString id;
+    QString name;
+    QString runsOn;                 // e.g., ubuntu-latest, windows-latest
+    QStringList needs;              // Dependencies on other jobs
+    QVariantMap env;                // Environment variables
+    QVariantMap outputs;            // Job outputs
+    QList<WorkflowStep> steps;
+    QVariantMap strategy;           // Matrix strategy
+    QString ifCondition;            // Conditional execution
+};
+
+/**
+ * @brief Represents a complete workflow
+ */
+struct Workflow {
+    QString name;
+    QString filePath;
+    QVariantMap on;                 // Trigger events
+    QVariantMap env;                // Global environment variables
+    QMap<QString, WorkflowJob> jobs;
+};
+
+/**
+ * @brief Parses GitHub workflow YAML files
+ */
+class WorkflowParser {
+public:
+    WorkflowParser();
+    ~WorkflowParser();
+
+    /**
+     * @brief Parse a workflow file
+     * @param filePath Path to the workflow YAML file
+     * @return Parsed workflow structure
+     */
+    Workflow parse(const QString& filePath);
+
+    /**
+     * @brief Check if the last parse had errors
+     * @return true if errors occurred
+     */
+    bool hasErrors() const;
+
+    /**
+     * @brief Get error messages from last parse
+     * @return List of error messages
+     */
+    QStringList getErrors() const;
+
+private:
+    QStringList m_errors;
+};
+
+} // namespace core
+} // namespace gwt

include/gui/JobView.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <QWidget>
+
+namespace gwt {
+namespace gui {
+
+/**
+ * @brief Widget for displaying job execution details
+ */
+class JobView : public QWidget {
+    Q_OBJECT
+
+public:
+    explicit JobView(QWidget* parent = nullptr);
+    ~JobView() override;
+
+    void setJobInfo(const QString& jobId, const QString& status);
+
+private:
+    void setupUI();
+};
+
+} // namespace gui
+} // namespace gwt

include/gui/MainWindow.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#include <QMainWindow>
+#include <memory>
+
+class QTreeWidget;
+class QTextEdit;
+class QPushButton;
+class QComboBox;
+
+namespace gwt {
+namespace core {
+class RepoManager;
+class JobExecutor;
+}
+
+namespace gui {
+
+/**
+ * @brief Main window for the GUI application
+ */
+class MainWindow : public QMainWindow {
+    Q_OBJECT
+
+public:
+    explicit MainWindow(QWidget* parent = nullptr);
+    ~MainWindow() override;
+
+private slots:
+    void onCloneRepository();
+    void onRefreshRepositories();
+    void onRepositorySelected();
+    void onRunWorkflow();
+    void onJobOutput(const QString& jobId, const QString& stepName, const QString& output);
+
+private:
+    void setupUI();
+    void loadRepositories();
+
+    QTreeWidget* m_repoTree;
+    QTreeWidget* m_workflowTree;
+    QTextEdit* m_outputView;
+    QPushButton* m_cloneButton;
+    QPushButton* m_runButton;
+    QComboBox* m_backendCombo;
+
+    std::unique_ptr<core::RepoManager> m_repoManager;
+    std::unique_ptr<core::JobExecutor> m_executor;
+};
+
+} // namespace gui
+} // namespace gwt

include/gui/WorkflowView.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <QWidget>
+
+namespace gwt {
+namespace gui {
+
+/**
+ * @brief Widget for displaying workflow information
+ */
+class WorkflowView : public QWidget {
+    Q_OBJECT
+
+public:
+    explicit WorkflowView(QWidget* parent = nullptr);
+    ~WorkflowView() override;
+
+    void loadWorkflow(const QString& workflowPath);
+
+private:
+    void setupUI();
+};
+
+} // namespace gui
+} // namespace gwt

src/backends/ContainerBackend.cpp

@@ -0,0 +1,133 @@
+#include "backends/ContainerBackend.h"
+#include <QProcess>
+#include <QDebug>
+
+namespace gwt {
+namespace backends {
+
+ContainerBackend::ContainerBackend(QObject* parent)
+    : ExecutionBackend(parent)
+{
+    detectRuntime();
+}
+
+ContainerBackend::~ContainerBackend() {
+    cleanup();
+}
+
+bool ContainerBackend::executeStep(const core::WorkflowStep& step,
+                                   const QVariantMap& context) {
+    if (m_containerId.isEmpty()) {
+        emit error("Container not prepared");
+        return false;
+    }
+    
+    // Execute command in container
+    if (!step.run.isEmpty()) {
+        QProcess process;
+        QStringList args;
+        args << "exec" << m_containerId << "sh" << "-c" << step.run;
+        
+        process.start(m_containerRuntime, args);
+        
+        if (!process.waitForFinished(300000)) { // 5 minutes
+            emit error("Step execution timeout");
+            return false;
+        }
+        
+        QString output = QString::fromUtf8(process.readAllStandardOutput());
+        emit this->output(output);
+        
+        if (process.exitCode() != 0) {
+            QString errorMsg = QString::fromUtf8(process.readAllStandardError());
+            emit error("Step failed: " + errorMsg);
+            return false;
+        }
+    } else if (!step.uses.isEmpty()) {
+        // Handle actions like actions/checkout@v3
+        emit this->output("Action execution: " + step.uses + " (stub)");
+        // Would need more complex action resolution
+    }
+    
+    return true;
+}
+
+bool ContainerBackend::prepareEnvironment(const QString& runsOn) {
+    QString image = mapRunsOnToImage(runsOn);
+    
+    QProcess process;
+    QStringList args;
+    args << "run" << "-d" << "-it" << image << "sh";
+    
+    process.start(m_containerRuntime, args);
+    
+    if (!process.waitForFinished(60000)) {
+        emit error("Container creation timeout");
+        return false;
+    }
+    
+    if (process.exitCode() != 0) {
+        QString errorMsg = QString::fromUtf8(process.readAllStandardError());
+        emit error("Failed to create container: " + errorMsg);
+        return false;
+    }
+    
+    m_containerId = QString::fromUtf8(process.readAllStandardOutput()).trimmed();
+    return !m_containerId.isEmpty();
+}
+
+void ContainerBackend::cleanup() {
+    if (!m_containerId.isEmpty()) {
+        QProcess process;
+        QStringList args;
+        args << "rm" << "-f" << m_containerId;
+        
+        process.start(m_containerRuntime, args);
+        process.waitForFinished(30000);
+        
+        m_containerId.clear();
+    }
+}
+
+bool ContainerBackend::detectRuntime() {
+    // Try docker first
+    QProcess dockerCheck;
+    dockerCheck.start("docker", QStringList() << "--version");
+    
+    if (dockerCheck.waitForFinished(5000) && dockerCheck.exitCode() == 0) {
+        m_containerRuntime = "docker";
+        return true;
+    }
+    
+    // Try podman
+    QProcess podmanCheck;
+    podmanCheck.start("podman", QStringList() << "--version");
+    
+    if (podmanCheck.waitForFinished(5000) && podmanCheck.exitCode() == 0) {
+        m_containerRuntime = "podman";
+        return true;
+    }
+    
+    return false;
+}
+
+QString ContainerBackend::mapRunsOnToImage(const QString& runsOn) const {
+    // Map GitHub runner specs to container images
+    if (runsOn.contains("ubuntu-latest") || runsOn.contains("ubuntu-22.04")) {
+        return "ubuntu:22.04";
+    } else if (runsOn.contains("ubuntu-20.04")) {
+        return "ubuntu:20.04";
+    } else if (runsOn.contains("ubuntu")) {
+        return "ubuntu:latest";
+    } else if (runsOn.contains("debian")) {
+        return "debian:latest";
+    } else if (runsOn.contains("alpine")) {
+        return "alpine:latest";
+    }
+    
+    // Default
+    return "ubuntu:22.04";
+}
+
+} // namespace backends
+} // namespace gwt

src/backends/QemuBackend.cpp

@@ -0,0 +1,100 @@
+#include "backends/QemuBackend.h"
+#include <QProcess>
+#include <QDebug>
+
+namespace gwt {
+namespace backends {
+
+QemuBackend::QemuBackend(QObject* parent)
+    : ExecutionBackend(parent)
+{
+    detectQemu();
+}
+
+QemuBackend::~QemuBackend() {
+    cleanup();
+}
+
+bool QemuBackend::executeStep(const core::WorkflowStep& step,
+                              const QVariantMap& context) {
+    if (m_vmId.isEmpty()) {
+        emit error("VM not prepared");
+        return false;
+    }
+    
+    // Execute command in VM via SSH or QEMU guest agent
+    if (!step.run.isEmpty()) {
+        // Stub implementation - would need VM communication setup
+        emit output("Executing in VM: " + step.run);
+        // Would use QEMU monitor or SSH to execute
+    } else if (!step.uses.isEmpty()) {
+        emit output("Action execution in VM: " + step.uses + " (stub)");
+    }
+    
+    return true;
+}
+
+bool QemuBackend::prepareEnvironment(const QString& runsOn) {
+    QString vmImage = mapRunsOnToVMImage(runsOn);
+    
+    if (!startVM(vmImage)) {
+        emit error("Failed to start VM");
+        return false;
+    }
+    
+    return true;
+}
+
+void QemuBackend::cleanup() {
+    stopVM();
+}
+
+bool QemuBackend::detectQemu() {
+    QProcess qemuCheck;
+    qemuCheck.start("qemu-system-x86_64", QStringList() << "--version");
+    
+    if (qemuCheck.waitForFinished(5000) && qemuCheck.exitCode() == 0) {
+        m_qemuPath = "qemu-system-x86_64";
+        return true;
+    }
+    
+    return false;
+}
+
+QString QemuBackend::mapRunsOnToVMImage(const QString& runsOn) const {
+    // Map GitHub runner specs to VM images
+    // These would be pre-built VM images stored locally
+    if (runsOn.contains("ubuntu-latest") || runsOn.contains("ubuntu-22.04")) {
+        return "ubuntu-22.04.qcow2";
+    } else if (runsOn.contains("ubuntu-20.04")) {
+        return "ubuntu-20.04.qcow2";
+    } else if (runsOn.contains("windows-latest")) {
+        return "windows-2022.qcow2";
+    }
+    
+    return "ubuntu-22.04.qcow2";
+}
+
+bool QemuBackend::startVM(const QString& imagePath) {
+    // Stub implementation - would need proper VM startup with networking
+    m_vmId = "vm-" + QString::number(QDateTime::currentSecsSinceEpoch());
+    
+    // Would execute something like:
+    // qemu-system-x86_64 -m 2048 -smp 2 -hda imagePath -net user -net nic
+    
+    emit output("Starting QEMU VM with image: " + imagePath);
+    
+    // For now, just simulate
+    return true;
+}
+
+void QemuBackend::stopVM() {
+    if (!m_vmId.isEmpty()) {
+        emit output("Stopping VM: " + m_vmId);
+        // Would send shutdown command to VM
+        m_vmId.clear();
+    }
+}
+
+} // namespace backends
+} // namespace gwt

src/cli/CommandHandler.cpp

@@ -0,0 +1,155 @@
+#include "cli/CommandHandler.h"
+#include "core/RepoManager.h"
+#include "core/JobExecutor.h"
+#include "core/WorkflowDiscovery.h"
+#include "core/WorkflowParser.h"
+#include <QCoreApplication>
+#include <QTextStream>
+#include <QDebug>
+
+namespace gwt {
+namespace cli {
+
+CommandHandler::CommandHandler(QObject* parent)
+    : QObject(parent)
+    , m_repoManager(std::make_unique<core::RepoManager>())
+    , m_executor(std::make_unique<core::JobExecutor>())
+{
+}
+
+CommandHandler::~CommandHandler() = default;
+
+int CommandHandler::execute(const QStringList& args) {
+    if (args.isEmpty() || args[0] == "help" || args[0] == "--help" || args[0] == "-h") {
+        printHelp();
+        return 0;
+    }
+    
+    QString command = args[0];
+    
+    if (command == "clone") {
+        return handleClone(args.mid(1));
+    } else if (command == "list") {
+        return handleList(args.mid(1));
+    } else if (command == "run") {
+        return handleRun(args.mid(1));
+    } else if (command == "workflows") {
+        return handleWorkflows(args.mid(1));
+    } else {
+        QTextStream err(stderr);
+        err << "Unknown command: " << command << Qt::endl;
+        printHelp();
+        return 1;
+    }
+}
+
+void CommandHandler::printHelp() const {
+    QTextStream out(stdout);
+    out << "GithubWorkflowTool - Local GitHub Workflow Simulator" << Qt::endl;
+    out << Qt::endl;
+    out << "Usage: gwt <command> [options]" << Qt::endl;
+    out << Qt::endl;
+    out << "Commands:" << Qt::endl;
+    out << "  clone <url>        Clone a repository" << Qt::endl;
+    out << "  list               List cloned repositories" << Qt::endl;
+    out << "  workflows <repo>   List workflows in a repository" << Qt::endl;
+    out << "  run <repo> <wf>    Run a workflow" << Qt::endl;
+    out << "  help               Show this help message" << Qt::endl;
+    out << Qt::endl;
+}
+
+int CommandHandler::handleClone(const QStringList& args) {
+    if (args.isEmpty()) {
+        QTextStream err(stderr);
+        err << "Error: Repository URL required" << Qt::endl;
+        return 1;
+    }
+    
+    QString repoUrl = args[0];
+    QTextStream out(stdout);
+    out << "Cloning repository: " << repoUrl << Qt::endl;
+    
+    if (m_repoManager->cloneRepository(repoUrl)) {
+        out << "Successfully cloned to: " << m_repoManager->getLocalPath(repoUrl) << Qt::endl;
+        return 0;
+    } else {
+        QTextStream err(stderr);
+        err << "Failed to clone repository" << Qt::endl;
+        return 1;
+    }
+}
+
+int CommandHandler::handleList(const QStringList& args) {
+    Q_UNUSED(args);
+    
+    QStringList repos = m_repoManager->listRepositories();
+    QTextStream out(stdout);
+    
+    out << "Cloned repositories:" << Qt::endl;
+    for (const QString& repo : repos) {
+        out << "  " << repo << Qt::endl;
+    }
+    
+    return 0;
+}
+
+int CommandHandler::handleRun(const QStringList& args) {
+    if (args.size() < 2) {
+        QTextStream err(stderr);
+        err << "Error: Repository path and workflow file required" << Qt::endl;
+        return 1;
+    }
+    
+    QString repoPath = args[0];
+    QString workflowFile = args[1];
+    
+    QTextStream out(stdout);
+    out << "Running workflow: " << workflowFile << Qt::endl;
+    
+    // Parse workflow
+    core::WorkflowParser parser;
+    core::Workflow workflow = parser.parse(workflowFile);
+    
+    if (parser.hasErrors()) {
+        QTextStream err(stderr);
+        err << "Workflow parsing errors:" << Qt::endl;
+        for (const QString& error : parser.getErrors()) {
+            err << "  " << error << Qt::endl;
+        }
+        return 1;
+    }
+    
+    // Execute workflow
+    bool useQemu = args.contains("--qemu");
+    if (m_executor->executeWorkflow(workflow, "push", useQemu)) {
+        out << "Workflow execution completed" << Qt::endl;
+        return 0;
+    } else {
+        QTextStream err(stderr);
+        err << "Workflow execution failed" << Qt::endl;
+        return 1;
+    }
+}
+
+int CommandHandler::handleWorkflows(const QStringList& args) {
+    if (args.isEmpty()) {
+        QTextStream err(stderr);
+        err << "Error: Repository path required" << Qt::endl;
+        return 1;
+    }
+    
+    QString repoPath = args[0];
+    core::WorkflowDiscovery discovery;
+    QStringList workflows = discovery.discoverWorkflows(repoPath);
+    
+    QTextStream out(stdout);
+    out << "Workflows in " << repoPath << ":" << Qt::endl;
+    for (const QString& workflow : workflows) {
+        out << "  " << workflow << Qt::endl;
+    }
+    
+    return 0;
+}
+
+} // namespace cli
+} // namespace gwt

src/cli/main.cpp

@@ -0,0 +1,15 @@
+#include "cli/CommandHandler.h"
+#include <QCoreApplication>
+
+int main(int argc, char* argv[]) {
+    QCoreApplication app(argc, argv);
+    app.setApplicationName("GithubWorkflowTool");
+    app.setApplicationVersion("0.1.0");
+    
+    gwt::cli::CommandHandler handler;
+    
+    QStringList args = app.arguments();
+    args.removeFirst(); // Remove program name
+    
+    return handler.execute(args);
+}

src/core/ArtifactManager.cpp

@@ -0,0 +1,84 @@
+#include "core/ArtifactManager.h"
+#include "core/StorageProvider.h"
+#include <QDir>
+#include <QFile>
+#include <QDebug>
+
+namespace gwt {
+namespace core {
+
+ArtifactManager::ArtifactManager(QObject* parent)
+    : QObject(parent)
+{
+}
+
+ArtifactManager::~ArtifactManager() = default;
+
+bool ArtifactManager::uploadArtifact(const QString& name, 
+                                     const QString& path,
+                                     const QString& workflowId) {
+    QString artifactPath = getArtifactPath(name, workflowId);
+    
+    QDir().mkpath(QFileInfo(artifactPath).path());
+    
+    // Simple file copy for now - would need compression/archiving for directories
+    QFileInfo sourceInfo(path);
+    
+    if (sourceInfo.isFile()) {
+        if (!QFile::copy(path, artifactPath)) {
+            emit error("Failed to upload artifact: " + name);
+            return false;
+        }
+    } else if (sourceInfo.isDir()) {
+        // Would need recursive directory copying
+        emit error("Directory artifacts not yet implemented");
+        return false;
+    }
+    
+    return true;
+}
+
+bool ArtifactManager::downloadArtifact(const QString& name,
+                                       const QString& workflowId,
+                                       const QString& destinationPath) {
+    QString artifactPath = getArtifactPath(name, workflowId);
+    
+    if (!QFile::exists(artifactPath)) {
+        emit error("Artifact not found: " + name);
+        return false;
+    }
+    
+    QDir().mkpath(QFileInfo(destinationPath).path());
+    
+    if (!QFile::copy(artifactPath, destinationPath)) {
+        emit error("Failed to download artifact: " + name);
+        return false;
+    }
+    
+    return true;
+}
+
+QStringList ArtifactManager::listArtifacts(const QString& workflowId) const {
+    QStringList artifacts;
+    
+    QString artifactDir = StorageProvider::instance().getCacheRoot() + "/artifacts/" + workflowId;
+    QDir dir(artifactDir);
+    
+    if (!dir.exists()) {
+        return artifacts;
+    }
+    
+    QFileInfoList files = dir.entryInfoList(QDir::Files);
+    for (const QFileInfo& file : files) {
+        artifacts << file.fileName();
+    }
+    
+    return artifacts;
+}
+
+QString ArtifactManager::getArtifactPath(const QString& name, const QString& workflowId) const {
+    return StorageProvider::instance().getCacheRoot() + "/artifacts/" + workflowId + "/" + name;
+}
+
+} // namespace core
+} // namespace gwt

src/core/CacheManager.cpp

@@ -0,0 +1,91 @@
+#include "core/CacheManager.h"
+#include "core/StorageProvider.h"
+#include <QDir>
+#include <QFile>
+#include <QCryptographicHash>
+#include <QDebug>
+
+namespace gwt {
+namespace core {
+
+CacheManager::CacheManager(QObject* parent)
+    : QObject(parent)
+{
+}
+
+CacheManager::~CacheManager() = default;
+
+bool CacheManager::saveCache(const QString& key, const QStringList& paths) {
+    QString cachePath = getCachePath(key);
+    
+    QDir().mkpath(QFileInfo(cachePath).path());
+    
+    // Simple implementation - would need tar/compression for real use
+    for (const QString& path : paths) {
+        QFileInfo info(path);
+        if (info.isFile()) {
+            QString destPath = cachePath + "/" + info.fileName();
+            QDir().mkpath(cachePath);
+            if (!QFile::copy(path, destPath)) {
+                emit error("Failed to cache file: " + path);
+                return false;
+            }
+        }
+    }
+    
+    return true;
+}
+
+bool CacheManager::restoreCache(const QString& key, const QStringList& paths) {
+    QString cachePath = getCachePath(key);
+    
+    if (!hasCache(key)) {
+        emit cacheMiss(key);
+        return false;
+    }
+    
+    // Restore cached files
+    QDir cacheDir(cachePath);
+    QFileInfoList cachedFiles = cacheDir.entryInfoList(QDir::Files);
+    
+    for (int i = 0; i < cachedFiles.size() && i < paths.size(); ++i) {
+        QString destPath = paths[i];
+        QDir().mkpath(QFileInfo(destPath).path());
+        
+        if (!QFile::copy(cachedFiles[i].filePath(), destPath)) {
+            emit error("Failed to restore cached file: " + destPath);
+            return false;
+        }
+    }
+    
+    emit cacheHit(key);
+    return true;
+}
+
+bool CacheManager::hasCache(const QString& key) const {
+    QString cachePath = getCachePath(key);
+    return QDir(cachePath).exists();
+}
+
+void CacheManager::clearAll() {
+    QString cacheRoot = StorageProvider::instance().getCacheRoot() + "/cache";
+    QDir dir(cacheRoot);
+    dir.removeRecursively();
+}
+
+void CacheManager::clearCache(const QString& key) {
+    QString cachePath = getCachePath(key);
+    QDir dir(cachePath);
+    dir.removeRecursively();
+}
+
+QString CacheManager::getCachePath(const QString& key) const {
+    // Hash the key for filesystem safety
+    QByteArray hashData = key.toUtf8();
+    QString hash = QString(QCryptographicHash::hash(hashData, QCryptographicHash::Sha256).toHex());
+    
+    return StorageProvider::instance().getCacheRoot() + "/cache/" + hash;
+}
+
+} // namespace core
+} // namespace gwt

src/core/JobExecutor.cpp

@@ -0,0 +1,144 @@
+#include "core/JobExecutor.h"
+#include "backends/ContainerBackend.h"
+#include "backends/QemuBackend.h"
+#include <QDebug>
+
+namespace gwt {
+namespace core {
+
+JobExecutor::JobExecutor(QObject* parent)
+    : QObject(parent)
+    , m_running(false)
+{
+}
+
+JobExecutor::~JobExecutor() = default;
+
+bool JobExecutor::executeWorkflow(const Workflow& workflow, 
+                                  const QString& triggerEvent,
+                                  bool useQemu) {
+    if (m_running) {
+        emit error("Execution already in progress");
+        return false;
+    }
+    
+    m_running = true;
+    
+    // Create appropriate backend
+    if (useQemu) {
+        m_backend = std::make_unique<backends::QemuBackend>(this);
+    } else {
+        m_backend = std::make_unique<backends::ContainerBackend>(this);
+    }
+    
+    // Connect backend signals
+    connect(m_backend.get(), &backends::ExecutionBackend::output,
+            [this](const QString& text) {
+        emit stepOutput("", "", text);
+    });
+    
+    // Resolve job execution order
+    QStringList jobOrder = resolveJobOrder(workflow);
+    
+    bool success = true;
+    for (const QString& jobId : jobOrder) {
+        const WorkflowJob& job = workflow.jobs[jobId];
+        
+        emit jobStarted(jobId);
+        
+        if (!executeJob(job)) {
+            success = false;
+            emit jobFinished(jobId, false);
+            break;
+        }
+        
+        emit jobFinished(jobId, true);
+    }
+    
+    m_running = false;
+    emit executionFinished(success);
+    
+    return success;
+}
+
+void JobExecutor::stopExecution() {
+    if (m_running && m_backend) {
+        m_backend->cleanup();
+        m_running = false;
+    }
+}
+
+bool JobExecutor::isRunning() const {
+    return m_running;
+}
+
+bool JobExecutor::executeJob(const WorkflowJob& job) {
+    // Prepare environment
+    if (!m_backend->prepareEnvironment(job.runsOn)) {
+        emit error("Failed to prepare environment for: " + job.runsOn);
+        return false;
+    }
+    
+    // Execute steps
+    for (const WorkflowStep& step : job.steps) {
+        emit stepStarted(job.id, step.name);
+        
+        QVariantMap context;
+        context["env"] = job.env;
+        context["workingDirectory"] = step.workingDirectory;
+        
+        if (!m_backend->executeStep(step, context)) {
+            emit stepFinished(job.id, step.name, false);
+            return false;
+        }
+        
+        emit stepFinished(job.id, step.name, true);
+    }
+    
+    return true;
+}
+
+QStringList JobExecutor::resolveJobOrder(const Workflow& workflow) const {
+    QStringList order;
+    QSet<QString> processed;
+    QMap<QString, QStringList> dependencies;
+    
+    // Build dependency map
+    for (auto it = workflow.jobs.begin(); it != workflow.jobs.end(); ++it) {
+        dependencies[it.key()] = it.value().needs;
+    }
+    
+    // Simple topological sort
+    bool changed = true;
+    while (changed && processed.size() < workflow.jobs.size()) {
+        changed = false;
+        
+        for (auto it = workflow.jobs.begin(); it != workflow.jobs.end(); ++it) {
+            QString jobId = it.key();
+            
+            if (processed.contains(jobId)) {
+                continue;
+            }
+            
+            // Check if all dependencies are satisfied
+            bool canRun = true;
+            for (const QString& dep : dependencies[jobId]) {
+                if (!processed.contains(dep)) {
+                    canRun = false;
+                    break;
+                }
+            }
+            
+            if (canRun) {
+                order << jobId;
+                processed.insert(jobId);
+                changed = true;
+            }
+        }
+    }
+    
+    return order;
+}
+
+} // namespace core
+} // namespace gwt

src/core/MatrixStrategy.cpp

@@ -0,0 +1,107 @@
+#include "core/MatrixStrategy.h"
+#include "core/WorkflowParser.h"
+#include <QDebug>
+
+namespace gwt {
+namespace core {
+
+MatrixStrategy::MatrixStrategy() = default;
+
+MatrixStrategy::~MatrixStrategy() = default;
+
+QList<WorkflowJob> MatrixStrategy::expandMatrix(const WorkflowJob& job) const {
+    QList<WorkflowJob> expandedJobs;
+    
+    if (!hasMatrix(job)) {
+        expandedJobs << job;
+        return expandedJobs;
+    }
+    
+    // Extract matrix variables
+    QVariantMap matrix = job.strategy["matrix"].toMap();
+    QList<QVariantMap> combinations = generateCombinations(matrix);
+    
+    // Create a job for each combination
+    for (const QVariantMap& combo : combinations) {
+        WorkflowJob expandedJob = job;
+        
+        // Update job ID to include matrix values
+        QString matrixSuffix = "(";
+        for (auto it = combo.begin(); it != combo.end(); ++it) {
+            if (it != combo.begin()) {
+                matrixSuffix += ", ";
+            }
+            matrixSuffix += it.key() + "=" + it.value().toString();
+        }
+        matrixSuffix += ")";
+        
+        expandedJob.id = job.id + matrixSuffix;
+        expandedJob.name = job.name + " " + matrixSuffix;
+        
+        // Add matrix variables to environment
+        for (auto it = combo.begin(); it != combo.end(); ++it) {
+            expandedJob.env["matrix." + it.key()] = it.value();
+        }
+        
+        expandedJobs << expandedJob;
+    }
+    
+    return expandedJobs;
+}
+
+bool MatrixStrategy::hasMatrix(const WorkflowJob& job) const {
+    return job.strategy.contains("matrix") && !job.strategy["matrix"].toMap().isEmpty();
+}
+
+QList<QVariantMap> MatrixStrategy::generateCombinations(const QVariantMap& matrix) const {
+    QList<QVariantMap> results;
+    
+    if (matrix.isEmpty()) {
+        return results;
+    }
+    
+    // Get all keys and their values
+    QStringList keys = matrix.keys();
+    QList<QVariantList> valueLists;
+    
+    for (const QString& key : keys) {
+        QVariant value = matrix[key];
+        if (value.type() == QVariant::List) {
+            valueLists << value.toList();
+        } else {
+            valueLists << QVariantList{value};
+        }
+    }
+    
+    // Generate all combinations
+    QList<int> indices(keys.size(), 0);
+    bool done = false;
+    
+    while (!done) {
+        QVariantMap combo;
+        for (int i = 0; i < keys.size(); ++i) {
+            combo[keys[i]] = valueLists[i][indices[i]];
+        }
+        results << combo;
+        
+        // Increment indices
+        int pos = keys.size() - 1;
+        while (pos >= 0) {
+            indices[pos]++;
+            if (indices[pos] < valueLists[pos].size()) {
+                break;
+            }
+            indices[pos] = 0;
+            pos--;
+        }
+        
+        if (pos < 0) {
+            done = true;
+        }
+    }
+    
+    return results;
+}
+
+} // namespace core
+} // namespace gwt

src/core/RepoManager.cpp

@@ -0,0 +1,126 @@
+#include "core/RepoManager.h"
+#include "core/StorageProvider.h"
+#include <QProcess>
+#include <QDir>
+#include <QDebug>
+
+namespace gwt {
+namespace core {
+
+RepoManager::RepoManager(QObject* parent)
+    : QObject(parent)
+    , m_storage(StorageProvider::instance())
+{
+}
+
+RepoManager::~RepoManager() = default;
+
+bool RepoManager::cloneRepository(const QString& repoUrl, const QString& branch) {
+    QString localPath = m_storage.getRepoDirectory(repoUrl);
+    
+    if (isCloned(repoUrl)) {
+        emit error("Repository already cloned at: " + localPath);
+        return false;
+    }
+    
+    QDir().mkpath(QFileInfo(localPath).path());
+    
+    QProcess git;
+    QStringList args;
+    args << "clone";
+    
+    if (!branch.isEmpty()) {
+        args << "--branch" << branch;
+    }
+    
+    args << repoUrl << localPath;
+    
+    git.start("git", args);
+    
+    if (!git.waitForStarted()) {
+        emit error("Failed to start git process");
+        return false;
+    }
+    
+    emit cloneProgress(10, "Cloning repository...");
+    
+    // Wait for completion with timeout
+    if (!git.waitForFinished(300000)) { // 5 minutes timeout
+        emit error("Git clone timeout");
+        git.kill();
+        return false;
+    }
+    
+    if (git.exitCode() != 0) {
+        QString errorMsg = QString::fromUtf8(git.readAllStandardError());
+        emit error("Git clone failed: " + errorMsg);
+        return false;
+    }
+    
+    emit cloneProgress(100, "Clone completed");
+    emit cloneFinished(true);
+    return true;
+}
+
+bool RepoManager::updateRepository(const QString& repoUrl) {
+    QString localPath = getLocalPath(repoUrl);
+    
+    if (!isCloned(repoUrl)) {
+        emit error("Repository not cloned: " + repoUrl);
+        return false;
+    }
+    
+    QProcess git;
+    git.setWorkingDirectory(localPath);
+    git.start("git", QStringList() << "pull");
+    
+    if (!git.waitForFinished(60000)) { // 1 minute timeout
+        emit error("Git pull timeout");
+        return false;
+    }
+    
+    if (git.exitCode() != 0) {
+        QString errorMsg = QString::fromUtf8(git.readAllStandardError());
+        emit error("Git pull failed: " + errorMsg);
+        return false;
+    }
+    
+    return true;
+}
+
+QString RepoManager::getLocalPath(const QString& repoUrl) const {
+    return m_storage.getRepoDirectory(repoUrl);
+}
+
+bool RepoManager::isCloned(const QString& repoUrl) const {
+    QString localPath = getLocalPath(repoUrl);
+    QDir dir(localPath);
+    return dir.exists() && dir.exists(".git");
+}
+
+QStringList RepoManager::listRepositories() const {
+    QStringList repos;
+    QString root = m_storage.getRepoStorageRoot();
+    
+    QDir rootDir(root);
+    if (!rootDir.exists()) {
+        return repos;
+    }
+    
+    // Recursively find all directories with .git
+    QFileInfoList entries = rootDir.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot);
+    for (const QFileInfo& entry : entries) {
+        QDir hostDir(entry.filePath());
+        QFileInfoList repoEntries = hostDir.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot);
+        for (const QFileInfo& repoEntry : repoEntries) {
+            if (QDir(repoEntry.filePath()).exists(".git")) {
+                repos << repoEntry.filePath();
+            }
+        }
+    }
+    
+    return repos;
+}
+
+} // namespace core
+} // namespace gwt

src/core/StorageProvider.cpp

@@ -0,0 +1,101 @@
+#include "core/StorageProvider.h"
+#include <QStandardPaths>
+#include <QCryptographicHash>
+#include <QUrl>
+#include <QDebug>
+
+namespace gwt {
+namespace core {
+
+StorageProvider& StorageProvider::instance() {
+    static StorageProvider instance;
+    return instance;
+}
+
+StorageProvider::StorageProvider() {
+#ifdef Q_OS_WIN
+    // Windows: %APPDATA%\GithubWorkflowTool\repos\
+    QString appData = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
+    m_repoRoot = appData + "/repos";
+    m_cacheRoot = appData + "/cache";
+#else
+    // Linux: XDG directories
+    QString dataHome = qEnvironmentVariable("XDG_DATA_HOME");
+    if (dataHome.isEmpty()) {
+        dataHome = QDir::homePath() + "/.local/share";
+    }
+    m_repoRoot = dataHome + "/githubworkflowtool/repos";
+
+    QString cacheHome = qEnvironmentVariable("XDG_CACHE_HOME");
+    if (cacheHome.isEmpty()) {
+        cacheHome = QDir::homePath() + "/.cache";
+    }
+    m_cacheRoot = cacheHome + "/githubworkflowtool";
+#endif
+
+    ensureDirectoriesExist();
+}
+
+QString StorageProvider::getRepoStorageRoot() const {
+    return m_repoRoot;
+}
+
+QString StorageProvider::getCacheRoot() const {
+    return m_cacheRoot;
+}
+
+QString StorageProvider::getRepoDirectory(const QString& repoUrl) const {
+    QString key = generateRepoKey(repoUrl);
+    return m_repoRoot + "/" + key;
+}
+
+bool StorageProvider::ensureDirectoriesExist() {
+    QDir dir;
+    bool success = true;
+    
+    if (!dir.exists(m_repoRoot)) {
+        success &= dir.mkpath(m_repoRoot);
+    }
+    
+    if (!dir.exists(m_cacheRoot)) {
+        success &= dir.mkpath(m_cacheRoot);
+    }
+    
+    return success;
+}
+
+QString StorageProvider::generateRepoKey(const QString& repoUrl) const {
+    QUrl url(repoUrl);
+    QString host = url.host();
+    QString path = url.path();
+    
+    // Remove leading/trailing slashes and .git suffix
+    path = path.trimmed();
+    if (path.startsWith('/')) {
+        path = path.mid(1);
+    }
+    if (path.endsWith(".git")) {
+        path = path.left(path.length() - 4);
+    }
+    
+    // Generate hash of the full URL for uniqueness
+    QByteArray hashData = repoUrl.toUtf8();
+    QString hash = QString(QCryptographicHash::hash(hashData, QCryptographicHash::Sha256).toHex()).left(8);
+    
+    // Create key: host/owner/name_hash
+    QString key = host + "/" + path + "_" + hash;
+    
+    // Sanitize the key to be filesystem-safe
+    key.replace(':', '_');
+    key.replace('?', '_');
+    key.replace('*', '_');
+    key.replace('"', '_');
+    key.replace('<', '_');
+    key.replace('>', '_');
+    key.replace('|', '_');
+    
+    return key;
+}
+
+} // namespace core
+} // namespace gwt

src/core/WorkflowDiscovery.cpp

@@ -0,0 +1,57 @@
+#include "core/WorkflowDiscovery.h"
+#include <QDir>
+#include <QFileInfo>
+#include <QDebug>
+
+namespace gwt {
+namespace core {
+
+WorkflowDiscovery::WorkflowDiscovery(QObject* parent)
+    : QObject(parent)
+{
+}
+
+WorkflowDiscovery::~WorkflowDiscovery() = default;
+
+QStringList WorkflowDiscovery::discoverWorkflows(const QString& repoPath) const {
+    QStringList workflows;
+    
+    QString workflowDir = repoPath + "/.github/workflows";
+    QDir dir(workflowDir);
+    
+    if (!dir.exists()) {
+        return workflows;
+    }
+    
+    QStringList filters;
+    filters << "*.yml" << "*.yaml";
+    
+    QFileInfoList files = dir.entryInfoList(filters, QDir::Files);
+    for (const QFileInfo& file : files) {
+        if (isValidWorkflow(file.filePath())) {
+            workflows << file.filePath();
+        }
+    }
+    
+    return workflows;
+}
+
+bool WorkflowDiscovery::hasWorkflows(const QString& repoPath) const {
+    return !discoverWorkflows(repoPath).isEmpty();
+}
+
+bool WorkflowDiscovery::isValidWorkflow(const QString& filePath) const {
+    // Basic validation - check if file exists and is readable
+    QFileInfo info(filePath);
+    if (!info.exists() || !info.isFile() || !info.isReadable()) {
+        return false;
+    }
+    
+    // More sophisticated validation would parse the YAML
+    // For now, just check file extension
+    QString suffix = info.suffix().toLower();
+    return suffix == "yml" || suffix == "yaml";
+}
+
+} // namespace core
+} // namespace gwt

src/core/WorkflowParser.cpp

@@ -0,0 +1,146 @@
+#include "core/WorkflowParser.h"
+#include <yaml-cpp/yaml.h>
+#include <QFile>
+#include <QDebug>
+
+namespace gwt {
+namespace core {
+
+WorkflowParser::WorkflowParser() = default;
+
+WorkflowParser::~WorkflowParser() = default;
+
+Workflow WorkflowParser::parse(const QString& filePath) {
+    m_errors.clear();
+    Workflow workflow;
+    workflow.filePath = filePath;
+    
+    try {
+        YAML::Node root = YAML::LoadFile(filePath.toStdString());
+        
+        // Parse workflow name
+        if (root["name"]) {
+            workflow.name = QString::fromStdString(root["name"].as<std::string>());
+        }
+        
+        // Parse triggers (on)
+        if (root["on"]) {
+            // Simplified parsing - would need more complex handling
+            YAML::Node onNode = root["on"];
+            if (onNode.IsScalar()) {
+                workflow.on["type"] = QString::fromStdString(onNode.as<std::string>());
+            } else if (onNode.IsMap()) {
+                // Store as QVariantMap for now
+                workflow.on["_raw"] = "complex";
+            }
+        }
+        
+        // Parse global env
+        if (root["env"]) {
+            YAML::Node envNode = root["env"];
+            for (auto it = envNode.begin(); it != envNode.end(); ++it) {
+                QString key = QString::fromStdString(it->first.as<std::string>());
+                QString value = QString::fromStdString(it->second.as<std::string>());
+                workflow.env[key] = value;
+            }
+        }
+        
+        // Parse jobs
+        if (root["jobs"]) {
+            YAML::Node jobsNode = root["jobs"];
+            for (auto it = jobsNode.begin(); it != jobsNode.end(); ++it) {
+                QString jobId = QString::fromStdString(it->first.as<std::string>());
+                YAML::Node jobNode = it->second;
+                
+                WorkflowJob job;
+                job.id = jobId;
+                
+                if (jobNode["name"]) {
+                    job.name = QString::fromStdString(jobNode["name"].as<std::string>());
+                }
+                
+                if (jobNode["runs-on"]) {
+                    job.runsOn = QString::fromStdString(jobNode["runs-on"].as<std::string>());
+                }
+                
+                // Parse needs
+                if (jobNode["needs"]) {
+                    YAML::Node needsNode = jobNode["needs"];
+                    if (needsNode.IsScalar()) {
+                        job.needs << QString::fromStdString(needsNode.as<std::string>());
+                    } else if (needsNode.IsSequence()) {
+                        for (size_t i = 0; i < needsNode.size(); ++i) {
+                            job.needs << QString::fromStdString(needsNode[i].as<std::string>());
+                        }
+                    }
+                }
+                
+                // Parse steps
+                if (jobNode["steps"]) {
+                    YAML::Node stepsNode = jobNode["steps"];
+                    for (size_t i = 0; i < stepsNode.size(); ++i) {
+                        YAML::Node stepNode = stepsNode[i];
+                        WorkflowStep step;
+                        
+                        if (stepNode["name"]) {
+                            step.name = QString::fromStdString(stepNode["name"].as<std::string>());
+                        }
+                        
+                        if (stepNode["id"]) {
+                            step.id = QString::fromStdString(stepNode["id"].as<std::string>());
+                        }
+                        
+                        if (stepNode["run"]) {
+                            step.run = QString::fromStdString(stepNode["run"].as<std::string>());
+                        }
+                        
+                        if (stepNode["uses"]) {
+                            step.uses = QString::fromStdString(stepNode["uses"].as<std::string>());
+                        }
+                        
+                        if (stepNode["working-directory"]) {
+                            step.workingDirectory = QString::fromStdString(stepNode["working-directory"].as<std::string>());
+                        }
+                        
+                        if (stepNode["shell"]) {
+                            step.shell = QString::fromStdString(stepNode["shell"].as<std::string>());
+                        }
+                        
+                        if (stepNode["if"]) {
+                            step.ifCondition = QString::fromStdString(stepNode["if"].as<std::string>());
+                        }
+                        
+                        job.steps.append(step);
+                    }
+                }
+                
+                // Parse strategy (matrix)
+                if (jobNode["strategy"]) {
+                    YAML::Node strategyNode = jobNode["strategy"];
+                    if (strategyNode["matrix"]) {
+                        // Store as QVariantMap for processing by MatrixStrategy
+                        job.strategy["matrix"] = "present";
+                    }
+                }
+                
+                workflow.jobs[jobId] = job;
+            }
+        }
+        
+    } catch (const YAML::Exception& e) {
+        m_errors << QString("YAML parsing error: %1").arg(e.what());
+    }
+    
+    return workflow;
+}
+
+bool WorkflowParser::hasErrors() const {
+    return !m_errors.isEmpty();
+}
+
+QStringList WorkflowParser::getErrors() const {
+    return m_errors;
+}
+
+} // namespace core
+} // namespace gwt

src/gui/JobView.cpp

@@ -0,0 +1,29 @@
+#include "gui/JobView.h"
+#include <QVBoxLayout>
+#include <QLabel>
+
+namespace gwt {
+namespace gui {
+
+JobView::JobView(QWidget* parent)
+    : QWidget(parent)
+{
+    setupUI();
+}
+
+JobView::~JobView() = default;
+
+void JobView::setupUI() {
+    QVBoxLayout* layout = new QVBoxLayout(this);
+    QLabel* label = new QLabel("Job View", this);
+    layout->addWidget(label);
+}
+
+void JobView::setJobInfo(const QString& jobId, const QString& status) {
+    Q_UNUSED(jobId);
+    Q_UNUSED(status);
+    // Implementation for job details
+}
+
+} // namespace gui
+} // namespace gwt

src/gui/MainWindow.cpp

@@ -0,0 +1,188 @@
+#include "gui/MainWindow.h"
+#include "core/RepoManager.h"
+#include "core/JobExecutor.h"
+#include "core/WorkflowDiscovery.h"
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QTreeWidget>
+#include <QTextEdit>
+#include <QPushButton>
+#include <QComboBox>
+#include <QInputDialog>
+#include <QMessageBox>
+#include <QLabel>
+
+namespace gwt {
+namespace gui {
+
+MainWindow::MainWindow(QWidget* parent)
+    : QMainWindow(parent)
+    , m_repoManager(std::make_unique<core::RepoManager>())
+    , m_executor(std::make_unique<core::JobExecutor>())
+{
+    setupUI();
+    loadRepositories();
+    
+    // Connect signals
+    connect(m_executor.get(), &core::JobExecutor::stepOutput,
+            this, &MainWindow::onJobOutput);
+}
+
+MainWindow::~MainWindow() = default;
+
+void MainWindow::setupUI() {
+    setWindowTitle("GitHub Workflow Tool");
+    resize(1000, 700);
+    
+    QWidget* central = new QWidget(this);
+    setCentralWidget(central);
+    
+    QVBoxLayout* mainLayout = new QVBoxLayout(central);
+    
+    // Top buttons
+    QHBoxLayout* buttonLayout = new QHBoxLayout();
+    m_cloneButton = new QPushButton("Clone Repository", this);
+    QPushButton* refreshButton = new QPushButton("Refresh", this);
+    
+    buttonLayout->addWidget(m_cloneButton);
+    buttonLayout->addWidget(refreshButton);
+    buttonLayout->addStretch();
+    
+    mainLayout->addLayout(buttonLayout);
+    
+    // Repository tree
+    QLabel* repoLabel = new QLabel("Repositories:", this);
+    mainLayout->addWidget(repoLabel);
+    
+    m_repoTree = new QTreeWidget(this);
+    m_repoTree->setHeaderLabels(QStringList() << "Path");
+    m_repoTree->setMaximumHeight(200);
+    mainLayout->addWidget(m_repoTree);
+    
+    // Workflow tree
+    QLabel* workflowLabel = new QLabel("Workflows:", this);
+    mainLayout->addWidget(workflowLabel);
+    
+    m_workflowTree = new QTreeWidget(this);
+    m_workflowTree->setHeaderLabels(QStringList() << "Workflow");
+    m_workflowTree->setMaximumHeight(200);
+    mainLayout->addWidget(m_workflowTree);
+    
+    // Execution controls
+    QHBoxLayout* execLayout = new QHBoxLayout();
+    m_runButton = new QPushButton("Run Workflow", this);
+    m_backendCombo = new QComboBox(this);
+    m_backendCombo->addItem("Container Backend");
+    m_backendCombo->addItem("QEMU Backend");
+    
+    execLayout->addWidget(new QLabel("Backend:", this));
+    execLayout->addWidget(m_backendCombo);
+    execLayout->addWidget(m_runButton);
+    execLayout->addStretch();
+    
+    mainLayout->addLayout(execLayout);
+    
+    // Output view
+    QLabel* outputLabel = new QLabel("Output:", this);
+    mainLayout->addWidget(outputLabel);
+    
+    m_outputView = new QTextEdit(this);
+    m_outputView->setReadOnly(true);
+    mainLayout->addWidget(m_outputView);
+    
+    // Connect signals
+    connect(m_cloneButton, &QPushButton::clicked, this, &MainWindow::onCloneRepository);
+    connect(refreshButton, &QPushButton::clicked, this, &MainWindow::onRefreshRepositories);
+    connect(m_repoTree, &QTreeWidget::itemSelectionChanged, this, &MainWindow::onRepositorySelected);
+    connect(m_runButton, &QPushButton::clicked, this, &MainWindow::onRunWorkflow);
+}
+
+void MainWindow::loadRepositories() {
+    m_repoTree->clear();
+    QStringList repos = m_repoManager->listRepositories();
+    
+    for (const QString& repo : repos) {
+        QTreeWidgetItem* item = new QTreeWidgetItem(m_repoTree);
+        item->setText(0, repo);
+        item->setData(0, Qt::UserRole, repo);
+    }
+}
+
+void MainWindow::onCloneRepository() {
+    bool ok;
+    QString repoUrl = QInputDialog::getText(this, "Clone Repository",
+                                           "Repository URL:",
+                                           QLineEdit::Normal,
+                                           "https://github.com/user/repo",
+                                           &ok);
+    
+    if (ok && !repoUrl.isEmpty()) {
+        m_outputView->append("Cloning: " + repoUrl);
+        
+        if (m_repoManager->cloneRepository(repoUrl)) {
+            m_outputView->append("Successfully cloned");
+            loadRepositories();
+        } else {
+            QMessageBox::warning(this, "Clone Failed", "Failed to clone repository");
+        }
+    }
+}
+
+void MainWindow::onRefreshRepositories() {
+    loadRepositories();
+}
+
+void MainWindow::onRepositorySelected() {
+    QList<QTreeWidgetItem*> selected = m_repoTree->selectedItems();
+    if (selected.isEmpty()) {
+        return;
+    }
+    
+    QString repoPath = selected[0]->data(0, Qt::UserRole).toString();
+    
+    // Discover workflows
+    core::WorkflowDiscovery discovery;
+    QStringList workflows = discovery.discoverWorkflows(repoPath);
+    
+    m_workflowTree->clear();
+    for (const QString& workflow : workflows) {
+        QTreeWidgetItem* item = new QTreeWidgetItem(m_workflowTree);
+        item->setText(0, QFileInfo(workflow).fileName());
+        item->setData(0, Qt::UserRole, workflow);
+    }
+}
+
+void MainWindow::onRunWorkflow() {
+    QList<QTreeWidgetItem*> selected = m_workflowTree->selectedItems();
+    if (selected.isEmpty()) {
+        QMessageBox::warning(this, "No Workflow Selected", "Please select a workflow to run");
+        return;
+    }
+    
+    QString workflowPath = selected[0]->data(0, Qt::UserRole).toString();
+    m_outputView->append("\n=== Running workflow: " + workflowPath + " ===\n");
+    
+    // Parse and execute
+    core::WorkflowParser parser;
+    core::Workflow workflow = parser.parse(workflowPath);
+    
+    if (parser.hasErrors()) {
+        m_outputView->append("Parsing errors:");
+        for (const QString& error : parser.getErrors()) {
+            m_outputView->append("  " + error);
+        }
+        return;
+    }
+    
+    bool useQemu = m_backendCombo->currentIndex() == 1;
+    m_executor->executeWorkflow(workflow, "push", useQemu);
+}
+
+void MainWindow::onJobOutput(const QString& jobId, const QString& stepName, const QString& output) {
+    Q_UNUSED(jobId);
+    Q_UNUSED(stepName);
+    m_outputView->append(output);
+}
+
+} // namespace gui
+} // namespace gwt

src/gui/WorkflowView.cpp

@@ -0,0 +1,28 @@
+#include "gui/WorkflowView.h"
+#include <QVBoxLayout>
+#include <QLabel>
+
+namespace gwt {
+namespace gui {
+
+WorkflowView::WorkflowView(QWidget* parent)
+    : QWidget(parent)
+{
+    setupUI();
+}
+
+WorkflowView::~WorkflowView() = default;
+
+void WorkflowView::setupUI() {
+    QVBoxLayout* layout = new QVBoxLayout(this);
+    QLabel* label = new QLabel("Workflow View", this);
+    layout->addWidget(label);
+}
+
+void WorkflowView::loadWorkflow(const QString& workflowPath) {
+    Q_UNUSED(workflowPath);
+    // Implementation for detailed workflow view
+}
+
+} // namespace gui
+} // namespace gwt

src/gui/main.cpp

@@ -0,0 +1,13 @@
+#include "gui/MainWindow.h"
+#include <QApplication>
+
+int main(int argc, char* argv[]) {
+    QApplication app(argc, argv);
+    app.setApplicationName("GithubWorkflowTool");
+    app.setApplicationVersion("0.1.0");
+    
+    gwt::gui::MainWindow window;
+    window.show();
+    
+    return app.exec();
+}