diff --git a/.gitignore b/.gitignore
index 480521a..c84a992 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,6 +25,9 @@ dmypy.json
 # Environment files
 .env
 
+# PyPI credentials
+.pypirc
+
 # pytest
 .pytest_cache/
 .coverage
diff --git a/.pypirc.example b/.pypirc.example
new file mode 100644
index 0000000..d27d421
--- /dev/null
+++ b/.pypirc.example
@@ -0,0 +1,25 @@
+# .pypirc.example
+# Configuration file for uploading packages to Forgejo PyPI
+#
+# This file is a template - copy it to .pypirc and fill in your credentials:
+#   cp .pypirc.example .pypirc
+#
+# IMPORTANT: Never commit .pypirc to version control!
+# It should already be in .gitignore
+
+[distutils]
+index-servers =
+    forgejo
+
+[forgejo]
+repository = https://git.him-tools.de/api/packages/HIM-public/pypi
+username = __token__
+password = YOUR_FORGEJO_ACCESS_TOKEN_HERE
+
+# How to get your Forgejo access token:
+# 1. Log in to your Forgejo instance: https://git.him-tools.de
+# 2. Go to Settings > Applications > Generate New Token
+# 3. Select 'write:package' scope
+# 4. Copy the token and paste it above (replace YOUR_FORGEJO_ACCESS_TOKEN_HERE)
+#
+# Note: The username should always be "__token__" when using an access token
diff --git a/README.md b/README.md
index c02a6c9..682b3ce 100644
--- a/README.md
+++ b/README.md
@@ -136,6 +136,64 @@ pytest
 ```
 
 
+## Building & Publishing
+
+### Update Version
+
+Update the version number across all project files:
+
+```bash
+# PowerShell
+.\update_version.ps1 0.2.0
+
+# Python
+python update_version.py 0.2.0
+
+# Bash
+./update_version.sh 0.2.0
+```
+
+### Build Wheel
+
+Build distribution packages:
+
+```bash
+# PowerShell
+.\build_wheel.ps1
+
+# Python
+python build_wheel.py
+
+# Bash
+./build_wheel.sh
+```
+
+### Upload to Forgejo PyPI
+
+First, create your `.pypirc` configuration:
+
+```bash
+cp .pypirc.example .pypirc
+# Edit .pypirc with your Forgejo access token
+```
+
+Then upload:
+
+```bash
+# PowerShell
+.\upload_wheel_to_forgejo_pypi.ps1
+
+# Bash
+./upload_wheel_to_forgejo_pypi.sh
+
+# Windows Batch
+upload_wheel_to_forgejo_pypi.bat
+```
+
+The package will be available at:
+`https://git.him-tools.de/HIM-public/-/packages/pypi/agravity-client`
+
+
 ## Licence
 
 MIT
diff --git a/build_wheel.ps1 b/build_wheel.ps1
new file mode 100644
index 0000000..9df068e
--- /dev/null
+++ b/build_wheel.ps1
@@ -0,0 +1,188 @@
+# build_wheel.ps1
+# Build wheel distribution for Agravity Client (PowerShell)
+#
+# Usage:
+#   .\build_wheel.ps1
+#
+# Requires:
+#   - Python 3.9+
+#   - setuptools>=65.0
+#   - wheel
+#   - build (recommended)
+
+param(
+    [switch]$Clean = $false,
+    [switch]$Upload = $false
+)
+
+# Define symbols as variables to avoid encoding issues
+$symSuccess = "[OK]"
+$symError = "[!]"
+$symBullet = "[*]"
+
+# Color functions for output
+function Write-Success {
+    Write-Host "$symSuccess $args" -ForegroundColor Green
+}
+
+function Write-Error-Custom {
+    Write-Host "$symError $args" -ForegroundColor Red
+}
+
+function Write-Header {
+    Write-Host ("=" * 70)
+    Write-Host $args
+    Write-Host ("=" * 70)
+}
+
+function Write-SubHeader {
+    Write-Host ("-" * 70)
+    Write-Host $args
+    Write-Host ("-" * 70)
+}
+
+# Main script
+$projectRoot = Split-Path -Parent $MyInvocation.MyCommand.Path
+$distDir = Join-Path $projectRoot "dist"
+$buildDir = Join-Path $projectRoot "build"
+$eggInfoDir = Join-Path $projectRoot "agravity_client.egg-info"
+
+Write-Header "Agravity Client - Wheel Builder (PowerShell)"
+
+# Clean if requested
+if ($Clean) {
+    Write-Host ""
+    Write-Host "Cleaning previous builds..."
+
+    @($distDir, $buildDir, $eggInfoDir) | ForEach-Object {
+        if (Test-Path $_) {
+            Remove-Item $_ -Recurse -Force -ErrorAction SilentlyContinue
+            Write-Success "Removed $_"
+        }
+    }
+}
+
+# Check if build directory exists from previous build
+if (Test-Path $distDir) {
+    Write-Host ""
+    Write-Host "Cleaning dist directory..."
+    Remove-Item $distDir -Recurse -Force -ErrorAction SilentlyContinue
+    Write-Success "Removed old distributions"
+}
+
+# Install build requirements if needed
+Write-Host ""
+Write-Host "Checking build dependencies..."
+$buildCheck = python -m pip list 2>$null | Select-String "build"
+if (-not $buildCheck) {
+    Write-Host "Installing build tools..."
+    python -m pip install -q build setuptools wheel
+    if ($LASTEXITCODE -eq 0) {
+        Write-Success "Build tools installed"
+    } else {
+        Write-Error-Custom "Failed to install build tools"
+        exit 1
+    }
+}
+
+# Build
+Write-SubHeader "Building distributions..."
+Write-Host ""
+
+Push-Location $projectRoot
+try {
+    python -m build
+    if ($LASTEXITCODE -ne 0) {
+        Write-Error-Custom "Build failed"
+        exit 1
+    }
+} finally {
+    Pop-Location
+}
+
+# Verify output
+Write-SubHeader "Build Results"
+Write-Host ""
+
+if (!(Test-Path $distDir)) {
+    Write-Error-Custom "dist directory not created"
+    exit 1
+}
+
+$wheels = @(Get-ChildItem -Path $distDir -Filter "*.whl" -ErrorAction SilentlyContinue)
+$sdists = @(Get-ChildItem -Path $distDir -Filter "*.tar.gz" -ErrorAction SilentlyContinue)
+
+if ($wheels.Count -eq 0 -and $sdists.Count -eq 0) {
+    Write-Error-Custom "No distributions created"
+    exit 1
+}
+
+Write-Success "Build successful!"
+Write-Host ""
+
+if ($wheels.Count -gt 0) {
+    Write-Host "Wheels:"
+    $wheels | ForEach-Object {
+        $sizeMB = [Math]::Round($_.Length / 1MB, 2)
+        Write-Host "  $symBullet $($_.Name) ($sizeMB MB)"
+    }
+}
+
+if ($sdists.Count -gt 0) {
+    Write-Host ""
+    Write-Host "Source Distributions:"
+    $sdists | ForEach-Object {
+        $sizeMB = [Math]::Round($_.Length / 1MB, 2)
+        Write-Host "  $symBullet $($_.Name) ($sizeMB MB)"
+    }
+}
+
+Write-Host ""
+Write-Success "Distributions saved to: $distDir"
+
+# Installation instructions
+Write-SubHeader "Installation Instructions"
+Write-Host ""
+
+if ($wheels.Count -gt 0) {
+    $wheel = $wheels[0]
+    Write-Host "Install the wheel locally:"
+    Write-Host "  pip install `"$($wheel.FullName)`""
+    Write-Host ""
+
+    Write-Host "Or upload to PyPI:"
+    Write-Host "  pip install twine"
+    Write-Host "  twine upload dist/*"
+    Write-Host ""
+}
+
+# Optional upload
+if ($Upload) {
+    Write-SubHeader "Uploading to PyPI..."
+    Write-Host ""
+
+    $twineCheck = python -m pip list 2>$null | Select-String "twine"
+    if (-not $twineCheck) {
+        Write-Host "Installing twine..."
+        python -m pip install -q twine
+    }
+
+    Write-Host "Running twine upload..."
+    Push-Location $projectRoot
+    try {
+        python -m twine upload dist/*
+        if ($LASTEXITCODE -eq 0) {
+            Write-Success "Upload complete!"
+        } else {
+            Write-Error-Custom "Upload failed"
+            exit 1
+        }
+    } finally {
+        Pop-Location
+    }
+}
+
+Write-Host ""
+Write-Host "Done!"
+Write-Host ""
+exit 0
diff --git a/build_wheel.py b/build_wheel.py
new file mode 100644
index 0000000..2b64673
--- /dev/null
+++ b/build_wheel.py
@@ -0,0 +1,152 @@
+#!/usr/bin/env python
+"""Build wheel distribution for Agravity Client.
+
+This script builds wheel and source distributions for the Agravity Client package.
+It requires setuptools and wheel to be installed.
+
+Usage:
+    python build_wheel.py
+
+Output:
+    - Wheels saved to dist/ directory
+    - Source distribution (sdist) also created for reference
+"""
+
+import shutil
+import subprocess
+import sys
+from pathlib import Path
+
+
+def main() -> int:
+    """Build wheel distribution.
+
+    Returns:
+        Exit code (0 for success, 1 for failure)
+    """
+    project_root = Path(__file__).parent
+    dist_dir = project_root / "dist"
+
+    print("=" * 70)
+    print("Agravity Client - Wheel Builder")
+    print("=" * 70)
+
+    # Clean previous builds
+    print("\nCleaning previous builds...")
+    if dist_dir.exists():
+        try:
+            shutil.rmtree(dist_dir)
+            print(f"✓ Removed {dist_dir}")
+        except OSError as e:
+            print(f"✗ Failed to remove {dist_dir}: {e}")
+            return 1
+
+    build_dir = project_root / "build"
+    if build_dir.exists():
+        try:
+            shutil.rmtree(build_dir)
+            print(f"✓ Removed {build_dir}")
+        except OSError as e:
+            print(f"✗ Failed to remove {build_dir}: {e}")
+            return 1
+
+    egg_info_dir = project_root / "agravity_client.egg-info"
+    if egg_info_dir.exists():
+        try:
+            shutil.rmtree(egg_info_dir)
+            print(f"✓ Removed {egg_info_dir}")
+        except OSError as e:
+            print(f"✗ Failed to remove {egg_info_dir}: {e}")
+            return 1
+
+    # Build wheel and sdist
+    print("\n" + "-" * 70)
+    print("Building distributions...")
+    print("-" * 70 + "\n")
+
+    try:
+        # Use python -m build for modern approach
+        result = subprocess.run(
+            [sys.executable, "-m", "build"],
+            cwd=project_root,
+            check=False
+        )
+
+        if result.returncode != 0:
+            print("\n✗ Build failed")
+            print("\nTrying alternative build method...")
+
+            # Fallback to direct setuptools invocation
+            result = subprocess.run(
+                [sys.executable, "setup.py", "sdist", "bdist_wheel"],
+                cwd=project_root,
+                check=False
+            )
+
+            if result.returncode != 0:
+                print("\n✗ Build failed with fallback method")
+                return 1
+    except FileNotFoundError:
+        # If 'build' module not available, use setup.py
+        print("Using setuptools directly...\n")
+        result = subprocess.run(
+            [sys.executable, "setup.py", "sdist", "bdist_wheel"],
+            cwd=project_root,
+            check=False
+        )
+
+        if result.returncode != 0:
+            print("\n✗ Build failed")
+            return 1
+
+    # Verify build output
+    print("\n" + "-" * 70)
+    print("Build Results")
+    print("-" * 70 + "\n")
+
+    if not dist_dir.exists():
+        print("✗ dist directory not created")
+        return 1
+
+    wheels = list(dist_dir.glob("*.whl"))
+    sdists = list(dist_dir.glob("*.tar.gz"))
+
+    if not wheels and not sdists:
+        print("✗ No distributions created")
+        return 1
+
+    print("✓ Build successful!\n")
+
+    if wheels:
+        print("Wheels:")
+        for wheel in wheels:
+            size_mb = wheel.stat().st_size / (1024 * 1024)
+            print(f"  • {wheel.name} ({size_mb:.2f} MB)")
+
+    if sdists:
+        print("\nSource Distributions:")
+        for sdist in sdists:
+            size_mb = sdist.stat().st_size / (1024 * 1024)
+            print(f"  • {sdist.name} ({size_mb:.2f} MB)")
+
+    print(f"\n✓ Distributions saved to: {dist_dir}")
+
+    # Installation instructions
+    print("\n" + "-" * 70)
+    print("Installation Instructions")
+    print("-" * 70 + "\n")
+
+    if wheels:
+        wheel = wheels[0]
+        print(f"Install the wheel locally:\n")
+        print(f"  pip install {dist_dir / wheel.name}\n")
+
+        print(f"Or upload to PyPI:\n")
+        print(f"  pip install twine")
+        print(f"  twine upload dist/*\n")
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/build_wheel.sh b/build_wheel.sh
new file mode 100644
index 0000000..bae6198
--- /dev/null
+++ b/build_wheel.sh
@@ -0,0 +1,197 @@
+#!/bin/bash
+# build_wheel.sh - Build wheel distribution for Agravity Client
+#
+# Usage:
+#   ./build_wheel.sh [--clean] [--upload]
+#
+# Options:
+#   --clean    Clean previous builds before building
+#   --upload   Upload to PyPI after building
+#
+# Requires:
+#   - Python 3.9+
+#   - setuptools>=65.0
+#   - wheel
+#   - build (recommended)
+
+set -e
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Functions
+print_success() {
+    echo -e "${GREEN}✓ $1${NC}"
+}
+
+print_error() {
+    echo -e "${RED}✗ $1${NC}"
+}
+
+print_header() {
+    echo "========================================================================"
+    echo "$1"
+    echo "========================================================================"
+}
+
+print_subheader() {
+    echo "------------------------------------------------------------------------"
+    echo "$1"
+    echo "------------------------------------------------------------------------"
+}
+
+# Parse arguments
+CLEAN=false
+UPLOAD=false
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --clean)
+            CLEAN=true
+            shift
+            ;;
+        --upload)
+            UPLOAD=true
+            shift
+            ;;
+        *)
+            echo "Unknown option: $1"
+            echo "Usage: $0 [--clean] [--upload]"
+            exit 1
+            ;;
+    esac
+done
+
+# Get project root
+PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+DIST_DIR="$PROJECT_ROOT/dist"
+BUILD_DIR="$PROJECT_ROOT/build"
+EGG_INFO_DIR="$PROJECT_ROOT/agravity_client.egg-info"
+
+print_header "Agravity Client - Wheel Builder"
+
+# Clean if requested
+if [ "$CLEAN" = true ]; then
+    echo ""
+    echo "Cleaning previous builds..."
+    for dir in "$DIST_DIR" "$BUILD_DIR" "$EGG_INFO_DIR"; do
+        if [ -d "$dir" ]; then
+            rm -rf "$dir"
+            print_success "Removed $dir"
+        fi
+    done
+fi
+
+# Clean dist directory for fresh build
+if [ -d "$DIST_DIR" ]; then
+    rm -rf "$DIST_DIR"
+    print_success "Removed old distributions"
+fi
+
+# Check build dependencies
+echo ""
+echo "Checking build dependencies..."
+if ! python3 -m pip list 2>/dev/null | grep -q "^build "; then
+    echo "Installing build tools..."
+    python3 -m pip install -q build setuptools wheel
+    if [ $? -eq 0 ]; then
+        print_success "Build tools installed"
+    else
+        print_error "Failed to install build tools"
+        exit 1
+    fi
+fi
+
+# Build
+print_subheader "Building distributions..."
+echo ""
+
+cd "$PROJECT_ROOT"
+if ! python3 -m build; then
+    print_error "Build failed"
+    exit 1
+fi
+
+# Verify output
+print_subheader "Build Results"
+echo ""
+
+if [ ! -d "$DIST_DIR" ]; then
+    print_error "dist directory not created"
+    exit 1
+fi
+
+# Count wheels and sdists
+WHEEL_COUNT=$(find "$DIST_DIR" -maxdepth 1 -name "*.whl" 2>/dev/null | wc -l)
+SDIST_COUNT=$(find "$DIST_DIR" -maxdepth 1 -name "*.tar.gz" 2>/dev/null | wc -l)
+
+if [ $WHEEL_COUNT -eq 0 ] && [ $SDIST_COUNT -eq 0 ]; then
+    print_error "No distributions created"
+    exit 1
+fi
+
+print_success "Build successful!"
+echo ""
+
+if [ $WHEEL_COUNT -gt 0 ]; then
+    echo "Wheels:"
+    for wheel in "$DIST_DIR"/*.whl; do
+        SIZE=$(du -h "$wheel" | cut -f1)
+        echo "  • $(basename "$wheel") ($SIZE)"
+    done
+fi
+
+if [ $SDIST_COUNT -gt 0 ]; then
+    echo ""
+    echo "Source Distributions:"
+    for sdist in "$DIST_DIR"/*.tar.gz; do
+        SIZE=$(du -h "$sdist" | cut -f1)
+        echo "  • $(basename "$sdist") ($SIZE)"
+    done
+fi
+
+echo ""
+print_success "Distributions saved to: $DIST_DIR"
+
+# Installation instructions
+print_subheader "Installation Instructions"
+echo ""
+
+if [ $WHEEL_COUNT -gt 0 ]; then
+    WHEEL=$(ls "$DIST_DIR"/*.whl | head -1)
+    echo "Install the wheel locally:"
+    echo "  pip install \"$WHEEL\""
+    echo ""
+    echo "Or upload to PyPI:"
+    echo "  pip install twine"
+    echo "  twine upload dist/*"
+    echo ""
+fi
+
+# Optional upload
+if [ "$UPLOAD" = true ]; then
+    print_subheader "Uploading to PyPI..."
+    echo ""
+
+    if ! python3 -m pip list 2>/dev/null | grep -q "^twine "; then
+        echo "Installing twine..."
+        python3 -m pip install -q twine
+    fi
+
+    echo "Running twine upload..."
+    cd "$PROJECT_ROOT"
+    if python3 -m twine upload dist/*; then
+        print_success "Upload complete!"
+    else
+        print_error "Upload failed"
+        exit 1
+    fi
+fi
+
+echo ""
+echo "Done!"
+echo ""
+exit 0
diff --git a/update_version.ps1 b/update_version.ps1
new file mode 100644
index 0000000..d2c6722
--- /dev/null
+++ b/update_version.ps1
@@ -0,0 +1,82 @@
+param(
+    [Parameter(Mandatory = $true, Position = 0)]
+    [string]$Version
+)
+
+function Test-VersionFormat {
+    param([string]$Ver)
+    $pattern = '^\d+\.\d+\.\d+(?:-[a-zA-Z0-9]+)?$'
+    return $Ver -match $pattern
+}
+
+function Update-FileVersion {
+    param(
+        [string]$FilePath,
+        [string]$Pattern,
+        [string]$NewVersion
+    )
+    try {
+        $content = Get-Content -Path $FilePath -Raw
+        $newContent = $content -replace $Pattern, $NewVersion
+        if ($content -eq $newContent) {
+            Write-Host "[OK] $(Split-Path -Leaf $FilePath) already up-to-date" -ForegroundColor Green
+            return $true
+        }
+        Set-Content -Path $FilePath -Value $newContent -NoNewline
+        Write-Host "[OK] Updated $(Split-Path -Leaf $FilePath)" -ForegroundColor Green
+        return $true
+    }
+    catch {
+        Write-Host "[ERROR] Error: $_" -ForegroundColor Red
+        return $false
+    }
+}
+
+if (-not (Test-VersionFormat $Version)) {
+    Write-Host "[ERROR] Invalid version format: $Version" -ForegroundColor Red
+    exit 1
+}
+
+$projectRoot = Split-Path -Parent $PSCommandPath
+$pyprojectPath = Join-Path $projectRoot "pyproject.toml"
+$initPath = Join-Path (Join-Path $projectRoot "agravity_client") "__init__.py"
+
+Write-Host "======================================================================"
+Write-Host "Updating Agravity Client to version $Version"
+Write-Host "======================================================================"
+
+$success = $true
+
+if (Test-Path $pyprojectPath) {
+    $pattern = 'version = "[^"]+"'
+    $newVersion = "version = `"$Version`""
+    if (-not (Update-FileVersion $pyprojectPath $pattern $newVersion)) {
+        $success = $false
+    }
+}
+else {
+    Write-Host "[ERROR] pyproject.toml not found" -ForegroundColor Red
+    $success = $false
+}
+
+if (Test-Path $initPath) {
+    $pattern = '__version__ = "[^"]+"'
+    $newVersion = "__version__ = `"$Version`""
+    if (-not (Update-FileVersion $initPath $pattern $newVersion)) {
+        $success = $false
+    }
+}
+else {
+    Write-Host "[ERROR] init file not found" -ForegroundColor Red
+    $success = $false
+}
+
+Write-Host "======================================================================"
+if ($success) {
+    Write-Host "[OK] Version successfully updated to $Version" -ForegroundColor Green
+    exit 0
+}
+else {
+    Write-Host "[ERROR] Update completed with errors" -ForegroundColor Red
+    exit 1
+}
diff --git a/update_version.py b/update_version.py
new file mode 100644
index 0000000..98cb726
--- /dev/null
+++ b/update_version.py
@@ -0,0 +1,127 @@
+#!/usr/bin/env python
+"""Update version across Agravity Client project files.
+
+This script updates the version in:
+- pyproject.toml
+- agravity_client/__init__.py
+
+Usage:
+    python update_version.py <version>
+    python update_version.py 0.2.0
+    python update_version.py 1.0.0
+
+The version must follow semantic versioning (major.minor.patch).
+"""
+
+import re
+import sys
+from pathlib import Path
+
+
+def validate_version(version: str) -> bool:
+    """Validate semantic version format.
+
+    Args:
+        version: Version string to validate
+
+    Returns:
+        True if valid, False otherwise
+    """
+    pattern = r'^\d+\.\d+\.\d+(?:-[a-zA-Z0-9]+)?$'
+    return bool(re.match(pattern, version))
+
+
+def update_file(file_path: Path, old_pattern: str, new_version: str) -> bool:
+    """Update version in a file.
+
+    Args:
+        file_path: Path to file to update
+        old_pattern: Regex pattern to find version
+        new_version: New version string
+
+    Returns:
+        True if successful, False otherwise
+    """
+    try:
+        content = file_path.read_text()
+        updated_content = re.sub(old_pattern, new_version, content)
+
+        if content == updated_content:
+            print(f"✓ {file_path.name} already up-to-date")
+            return True
+
+        file_path.write_text(updated_content)
+        print(f"✓ Updated {file_path.name}")
+        return True
+    except Exception as e:
+        print(f"✗ Error updating {file_path.name}: {e}")
+        return False
+
+
+def main() -> int:
+    """Update version in project files.
+
+    Returns:
+        Exit code (0 for success, 1 for failure)
+    """
+    if len(sys.argv) != 2:
+        print(f"Usage: {sys.argv[0]} <version>")
+        print(f"Example: {sys.argv[0]} 0.2.0")
+        return 1
+
+    new_version = sys.argv[1]
+
+    if not validate_version(new_version):
+        print(f"✗ Invalid version format: {new_version}")
+        print("Version must follow semantic versioning (major.minor.patch)")
+        print("Examples: 1.0.0, 0.2.0, 1.0.0-beta")
+        return 1
+
+    project_root = Path(__file__).parent
+    pyproject_path = project_root / "pyproject.toml"
+    init_path = project_root / "agravity_client" / "__init__.py"
+
+    print("=" * 70)
+    print(f"Updating Agravity Client to version {new_version}")
+    print("=" * 70)
+
+    success = True
+
+    # Update pyproject.toml
+    if pyproject_path.exists():
+        pattern = r'version = "[^"]+"'
+        success &= update_file(
+            pyproject_path,
+            pattern,
+            f'version = "{new_version}"'
+        )
+    else:
+        print(f"✗ {pyproject_path} not found")
+        success = False
+
+    # Update __init__.py
+    if init_path.exists():
+        pattern = r'__version__ = "[^"]+"'
+        success &= update_file(
+            init_path,
+            pattern,
+            f'__version__ = "{new_version}"'
+        )
+    else:
+        print(f"✗ {init_path} not found")
+        success = False
+
+    if success:
+        print("=" * 70)
+        print(f"✓ Version successfully updated to {new_version}")
+        print("=" * 70)
+        return 0
+    else:
+        print("=" * 70)
+        print("✗ Version update completed with errors")
+        print("=" * 70)
+        return 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/update_version.sh b/update_version.sh
new file mode 100644
index 0000000..9c94a6f
--- /dev/null
+++ b/update_version.sh
@@ -0,0 +1,123 @@
+#!/bin/bash
+# Update version across Agravity Client project files.
+#
+# This script updates the version in:
+# - pyproject.toml
+# - agravity_client/__init__.py
+#
+# Usage:
+#     ./update_version.sh <version>
+#     ./update_version.sh 0.2.0
+#
+# The version must follow semantic versioning (major.minor.patch).
+
+set -euo pipefail
+
+# Color codes
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+validate_version() {
+    local version=$1
+    if [[ ! $version =~ ^[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9]+)?$ ]]; then
+        return 1
+    fi
+    return 0
+}
+
+update_file() {
+    local file_path=$1
+    local pattern=$2
+    local new_version=$3
+
+    if [[ ! -f "$file_path" ]]; then
+        echo -e "${RED}✗ File not found: $file_path${NC}"
+        return 1
+    fi
+
+    # Check if content would change
+    local content
+    content=$(cat "$file_path")
+
+    # Use sed to update the file (handles both macOS and Linux)
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        # macOS requires -i '' for in-place editing
+        sed -i '' "$pattern" "$file_path"
+    else
+        # Linux
+        sed -i "$pattern" "$file_path"
+    fi
+
+    local new_content
+    new_content=$(cat "$file_path")
+
+    if [[ "$content" == "$new_content" ]]; then
+        echo -e "${GREEN}✓ $(basename "$file_path") already up-to-date${NC}"
+    else
+        echo -e "${GREEN}✓ Updated $(basename "$file_path")${NC}"
+    fi
+    return 0
+}
+
+main() {
+    if [[ $# -ne 1 ]]; then
+        echo "Usage: $0 <version>"
+        echo "Example: $0 0.2.0"
+        exit 1
+    fi
+
+    local new_version=$1
+
+    if ! validate_version "$new_version"; then
+        echo -e "${RED}✗ Invalid version format: $new_version${NC}"
+        echo -e "${YELLOW}Version must follow semantic versioning (major.minor.patch)${NC}"
+        echo -e "${YELLOW}Examples: 1.0.0, 0.2.0, 1.0.0-beta${NC}"
+        exit 1
+    fi
+
+    local project_root
+    project_root="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+    local pyproject_path="$project_root/pyproject.toml"
+    local init_path="$project_root/agravity_client/__init__.py"
+
+    echo "======================================================================"
+    echo "Updating Agravity Client to version $new_version"
+    echo "======================================================================"
+
+    local success=true
+
+    # Update pyproject.toml
+    if [[ -f "$pyproject_path" ]]; then
+        local pattern_pyproject="s|version = \"[^\"]*\"|version = \"$new_version\"|g"
+        if ! update_file "$pyproject_path" "$pattern_pyproject"; then
+            success=false
+        fi
+    else
+        echo -e "${RED}✗ $pyproject_path not found${NC}"
+        success=false
+    fi
+
+    # Update __init__.py
+    if [[ -f "$init_path" ]]; then
+        local pattern_init="s|__version__ = \"[^\"]*\"|__version__ = \"$new_version\"|g"
+        if ! update_file "$init_path" "$pattern_init"; then
+            success=false
+        fi
+    else
+        echo -e "${RED}✗ $init_path not found${NC}"
+        success=false
+    fi
+
+    echo "======================================================================"
+    if [[ "$success" == true ]]; then
+        echo -e "${GREEN}✓ Version successfully updated to $new_version${NC}"
+        exit 0
+    else
+        echo -e "${RED}✗ Version update completed with errors${NC}"
+        exit 1
+    fi
+}
+
+main "$@"
diff --git a/upload_wheel_to_forgejo_pypi.bat b/upload_wheel_to_forgejo_pypi.bat
new file mode 100644
index 0000000..1ef9f0d
--- /dev/null
+++ b/upload_wheel_to_forgejo_pypi.bat
@@ -0,0 +1,103 @@
+@echo off
+REM Upload wheel to Forgejo PyPI for Agravity Client
+REM
+REM Prerequisites:
+REM   1. Create .pypirc file in project root
+REM   2. Copy from .pypirc.example and add your credentials
+REM
+REM Usage:
+REM   upload_wheel_to_forgejo_pypi.bat [--build]
+REM   Options: --build  Force rebuild before upload
+
+setlocal enabledelayedexpansion
+
+set PYPIRC_SRC=%CD%\.pypirc
+set PYPIRC_DEST=%USERPROFILE%\.pypirc
+
+echo.
+echo ========================================================================
+echo Agravity Client - Upload to Forgejo PyPI
+echo ========================================================================
+echo.
+
+REM Check for .pypirc
+if not exist ".pypirc" (
+    echo [!] .pypirc not found in project root!
+    echo.
+    echo Setup instructions:
+    echo   1. cp .pypirc.example .pypirc
+    echo   2. Edit .pypirc with your Forgejo credentials
+    echo   3. Run this script again
+    echo.
+    pause
+    exit /b 1
+)
+
+REM Copy .pypirc to user profile
+echo Configuring credentials...
+copy /Y "%PYPIRC_SRC%" "%PYPIRC_DEST%" > nul
+
+REM Activate virtual environment (if exists)
+if exist .venv\Scripts\activate.bat (
+    call .venv\Scripts\activate.bat
+)
+
+REM Install twine if needed
+python -m pip list | find /I "twine" > nul
+if errorlevel 1 (
+    echo Installing twine...
+    python -m pip install -q twine
+)
+
+cd /d "%~dp0"
+
+REM Check for --build flag
+if "%~1"=="--build" (
+    echo Building wheel (forced)...
+    rmdir /s /q dist > nul 2>&1
+    python build_wheel.py
+    if errorlevel 1 (
+        del "%PYPIRC_DEST%"
+        if exist .venv\Scripts\deactivate.bat call .venv\Scripts\deactivate.bat
+        exit /b 1
+    )
+) else (
+    REM Build wheel if not present
+    if not exist dist\*.whl (
+        echo Building wheel...
+        python build_wheel.py
+        if errorlevel 1 (
+            del "%PYPIRC_DEST%"
+            if exist .venv\Scripts\deactivate.bat call .venv\Scripts\deactivate.bat
+            exit /b 1
+        )
+    )
+)
+
+REM Upload to Forgejo PyPI
+echo.
+echo ========================================================================
+echo Uploading to Forgejo PyPI...
+echo ========================================================================
+echo.
+
+twine upload -r forgejo dist\*.whl
+set UPLOAD_RESULT=%errorlevel%
+
+REM Cleanup
+del "%PYPIRC_DEST%"
+if exist .venv\Scripts\deactivate.bat call .venv\Scripts\deactivate.bat
+
+echo.
+echo ========================================================================
+if %UPLOAD_RESULT% equ 0 (
+    echo Upload successful!
+) else (
+    echo Upload failed
+)
+echo ========================================================================
+echo.
+
+endlocal
+pause
+exit /b %UPLOAD_RESULT%
diff --git a/upload_wheel_to_forgejo_pypi.ps1 b/upload_wheel_to_forgejo_pypi.ps1
new file mode 100644
index 0000000..41813fc
--- /dev/null
+++ b/upload_wheel_to_forgejo_pypi.ps1
@@ -0,0 +1,130 @@
+# upload_wheel_to_forgejo_pypi.ps1
+# Upload wheel to Forgejo PyPI for Agravity Client
+#
+# Prerequisites:
+#   1. Create .pypirc file with your Forgejo credentials
+#   2. Copy from .pypirc.example and add your credentials
+#
+# Usage:
+#   .\upload_wheel_to_forgejo_pypi.ps1
+
+param(
+    [switch]$Build = $false,
+    [switch]$Help = $false
+)
+
+if ($Help) {
+    Write-Host @"
+Upload wheel to Forgejo PyPI for Agravity Client
+
+USAGE:
+    .\upload_wheel_to_forgejo_pypi.ps1 [-Build]
+
+OPTIONS:
+    -Build      Force rebuild wheel before uploading
+    -Help       Display this help message
+
+SETUP:
+    1. Create .pypirc in project root
+    2. Copy from .pypirc.example as template
+    3. Add your Forgejo repository URL and credentials:
+       [distutils]
+       index-servers = forgejo
+
+       [forgejo]
+       repository = https://git.him-tools.de/api/packages/HIM-public/pypi
+       username = __token__
+       password = YOUR_ACCESS_TOKEN
+
+    4. Keep .pypirc in .gitignore (already added)
+
+EXAMPLE:
+    .\upload_wheel_to_forgejo_pypi.ps1           # Upload existing wheel
+    .\upload_wheel_to_forgejo_pypi.ps1 -Build    # Rebuild and upload
+"@
+    exit 0
+}
+
+$projectRoot = Split-Path -Parent $MyInvocation.MyCommand.Path
+$pypiRcSrc = Join-Path $projectRoot ".pypirc"
+$pypiRcDest = Join-Path $env:USERPROFILE ".pypirc"
+
+Write-Host ""
+Write-Host "========================================================================"
+Write-Host "Agravity Client - Upload to Forgejo PyPI"
+Write-Host "========================================================================"
+Write-Host ""
+
+# Check for .pypirc
+if (!(Test-Path $pypiRcSrc)) {
+    Write-Host "[!] .pypirc not found in project root!" -ForegroundColor Red
+    Write-Host ""
+    Write-Host "Setup instructions:"
+    Write-Host "  1. cp .pypirc.example .pypirc"
+    Write-Host "  2. Edit .pypirc with your Forgejo credentials"
+    Write-Host "  3. Run this script again"
+    Write-Host ""
+    Write-Host "For help: .\upload_wheel_to_forgejo_pypi.ps1 -Help"
+    Write-Host ""
+    exit 1
+}
+
+# Copy .pypirc to user profile
+Write-Host "Configuring credentials..."
+Copy-Item -Path $pypiRcSrc -Destination $pypiRcDest -Force
+
+# Activate virtual environment
+$activateScript = Join-Path $projectRoot ".venv\Scripts\Activate.ps1"
+if (Test-Path $activateScript) {
+    & $activateScript
+}
+
+# Install/upgrade twine if needed
+python -m pip list | Select-String "^twine " > $null
+if ($LASTEXITCODE -ne 0) {
+    Write-Host "Installing twine..."
+    python -m pip install -q twine
+}
+
+# Build wheel if requested or not present
+Push-Location $projectRoot
+if ($Build -or !(Get-ChildItem -Path "dist" -Filter "*.whl" -ErrorAction SilentlyContinue)) {
+    if ($Build) {
+        Write-Host "Building wheel (forced)..."
+        Remove-Item "dist" -Recurse -Force -ErrorAction SilentlyContinue
+    } else {
+        Write-Host "Building wheel..."
+    }
+    python build_wheel.py
+    if ($LASTEXITCODE -ne 0) {
+        Remove-Item $pypiRcDest -Force
+        exit 1
+    }
+}
+
+# Upload to Forgejo PyPI
+Write-Host ""
+Write-Host "========================================================================"
+Write-Host "Uploading to Forgejo PyPI..."
+Write-Host "========================================================================"
+Write-Host ""
+
+twine upload -r forgejo dist/*.whl
+$uploadResult = $LASTEXITCODE
+
+Pop-Location
+
+# Cleanup credentials
+Remove-Item $pypiRcDest -Force
+
+Write-Host ""
+Write-Host "========================================================================"
+if ($uploadResult -eq 0) {
+    Write-Host "Upload successful!" -ForegroundColor Green
+} else {
+    Write-Host "Upload failed" -ForegroundColor Red
+}
+Write-Host "========================================================================"
+Write-Host ""
+
+exit $uploadResult
diff --git a/upload_wheel_to_forgejo_pypi.sh b/upload_wheel_to_forgejo_pypi.sh
new file mode 100644
index 0000000..05c2f8d
--- /dev/null
+++ b/upload_wheel_to_forgejo_pypi.sh
@@ -0,0 +1,100 @@
+#!/bin/bash
+# upload_wheel_to_forgejo_pypi.sh
+# Upload wheel to Forgejo PyPI for Agravity Client
+#
+# Prerequisites:
+#   1. Create .pypirc file in project root
+#   2. Copy from .pypirc.example and add your credentials
+#
+# Usage:
+#   ./upload_wheel_to_forgejo_pypi.sh [--build]
+#   Options: --build  Force rebuild before upload
+
+set -e
+
+PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PYPIRC_SRC="$PROJECT_ROOT/.pypirc"
+PYPIRC_DEST="$HOME/.pypirc"
+
+echo ""
+echo "========================================================================"
+echo "Agravity Client - Upload to Forgejo PyPI"
+echo "========================================================================"
+echo ""
+
+# Check for .pypirc
+if [ ! -f "$PYPIRC_SRC" ]; then
+    echo "[!] .pypirc not found in project root!"
+    echo ""
+    echo "Setup instructions:"
+    echo "  1. cp .pypirc.example .pypirc"
+    echo "  2. Edit .pypirc with your Forgejo credentials"
+    echo "  3. Run this script again"
+    echo ""
+    exit 1
+fi
+
+# Copy .pypirc to user home
+echo "Configuring credentials..."
+cp "$PYPIRC_SRC" "$PYPIRC_DEST"
+chmod 600 "$PYPIRC_DEST"
+
+# Activate virtual environment (if exists)
+if [ -f "$PROJECT_ROOT/.venv/bin/activate" ]; then
+    source "$PROJECT_ROOT/.venv/bin/activate"
+fi
+
+# Install twine if needed
+if ! pip list 2>/dev/null | grep -q "^twine "; then
+    echo "Installing twine..."
+    pip install -q twine
+fi
+
+# Check for --build flag
+if [ "$1" = "--build" ]; then
+    echo "Building wheel (forced)..."
+    rm -rf "$PROJECT_ROOT/dist"
+    cd "$PROJECT_ROOT"
+    python build_wheel.py
+    if [ $? -ne 0 ]; then
+        rm -f "$PYPIRC_DEST"
+        exit 1
+    fi
+else
+    # Build wheel if not present
+    if ! ls "$PROJECT_ROOT/dist"/*.whl > /dev/null 2>&1; then
+        echo "Building wheel..."
+        cd "$PROJECT_ROOT"
+        python build_wheel.py
+        if [ $? -ne 0 ]; then
+            rm -f "$PYPIRC_DEST"
+            exit 1
+        fi
+    fi
+fi
+
+# Upload to Forgejo PyPI
+echo ""
+echo "========================================================================"
+echo "Uploading to Forgejo PyPI..."
+echo "========================================================================"
+echo ""
+
+cd "$PROJECT_ROOT"
+twine upload -r forgejo dist/*.whl
+UPLOAD_RESULT=$?
+
+# Cleanup
+rm -f "$PYPIRC_DEST"
+
+echo ""
+echo "========================================================================"
+if [ $UPLOAD_RESULT -eq 0 ]; then
+    echo "Upload successful!"
+else
+    echo "Upload failed"
+fi
+echo "========================================================================"
+echo ""
+
+exit $UPLOAD_RESULT