feat: Add automated release script

Add comprehensive release automation script that:
- Validates environment and dependencies
- Runs full test suite
- Formats code with Black
- Bumps version (patch/minor/major)
- Creates git tag
- Pushes to GitHub
- Creates GitHub release with changelog

Usage: ./scripts/release.sh [patch|minor|major]

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: markomanninen

scripts/release.sh

@@ -0,0 +1,186 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Release automation script for mcp-debugpy
+# Usage: ./scripts/release.sh [patch|minor|major]
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+VENV_DIR="$ROOT_DIR/.venv"
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Print colored message
+print_msg() {
+    local color=$1
+    shift
+    echo -e "${color}$*${NC}"
+}
+
+print_error() { print_msg "$RED" "ERROR: $*"; }
+print_success() { print_msg "$GREEN" "✓ $*"; }
+print_info() { print_msg "$YELLOW" "→ $*"; }
+
+# Check if we're in the right directory
+if [[ ! -f "$ROOT_DIR/pyproject.toml" ]]; then
+    print_error "Must be run from mcp-debugpy repository root or scripts directory"
+    exit 1
+fi
+
+cd "$ROOT_DIR"
+
+# Detect Python and ensure venv exists
+if [[ ! -d "$VENV_DIR" ]]; then
+    print_error "Virtual environment not found at $VENV_DIR"
+    print_info "Run: python -m venv .venv && .venv/bin/pip install -e '.[dev]'"
+    exit 1
+fi
+
+PYTHON="$VENV_DIR/bin/python"
+PIP="$VENV_DIR/bin/pip"
+
+if [[ ! -x "$PYTHON" ]]; then
+    print_error "Python executable not found: $PYTHON"
+    exit 1
+fi
+
+# Ensure required packages are installed
+print_info "Checking required packages..."
+for pkg in black pytest; do
+    if ! "$PYTHON" -c "import $pkg" 2>/dev/null; then
+        print_info "Installing $pkg..."
+        "$PIP" install -q "$pkg"
+    fi
+done
+print_success "Required packages available"
+
+# Get version bump type (default: patch)
+BUMP_TYPE="${1:-patch}"
+if [[ ! "$BUMP_TYPE" =~ ^(patch|minor|major)$ ]]; then
+    print_error "Invalid version bump type: $BUMP_TYPE"
+    print_info "Usage: $0 [patch|minor|major]"
+    exit 1
+fi
+
+# Get current version from pyproject.toml
+CURRENT_VERSION=$(grep '^version = ' pyproject.toml | cut -d'"' -f2)
+print_info "Current version: $CURRENT_VERSION"
+
+# Calculate new version
+IFS='.' read -r major minor patch <<< "$CURRENT_VERSION"
+case "$BUMP_TYPE" in
+    major) NEW_VERSION="$((major + 1)).0.0" ;;
+    minor) NEW_VERSION="${major}.$((minor + 1)).0" ;;
+    patch) NEW_VERSION="${major}.${minor}.$((patch + 1))" ;;
+esac
+
+print_info "New version will be: $NEW_VERSION"
+read -p "Continue? [y/N] " -n 1 -r
+echo
+if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+    print_info "Cancelled"
+    exit 0
+fi
+
+# Check git status
+if [[ -n $(git status --porcelain) ]]; then
+    print_error "Working directory is not clean. Commit or stash changes first."
+    git status --short
+    exit 1
+fi
+print_success "Working directory is clean"
+
+# Ensure we're on main branch
+CURRENT_BRANCH=$(git branch --show-current)
+if [[ "$CURRENT_BRANCH" != "main" ]]; then
+    print_error "Must be on main branch (currently on: $CURRENT_BRANCH)"
+    exit 1
+fi
+print_success "On main branch"
+
+# Pull latest changes
+print_info "Pulling latest changes..."
+git pull origin main
+print_success "Up to date with origin"
+
+# Run tests
+print_info "Running tests..."
+export PYTHONPATH="$ROOT_DIR:$ROOT_DIR/src:${PYTHONPATH:-}"
+if ! "$PYTHON" -m pytest tests/ -v --tb=short; then
+    print_error "Tests failed!"
+    exit 1
+fi
+print_success "All tests passed"
+
+# Format code with Black
+print_info "Formatting code with Black..."
+"$PYTHON" -m black src/ tests/ scripts/ || true
+print_success "Code formatted"
+
+# Update version in pyproject.toml
+print_info "Updating version to $NEW_VERSION..."
+sed -i.bak "s/^version = \".*\"/version = \"$NEW_VERSION\"/" pyproject.toml
+rm -f pyproject.toml.bak
+print_success "Version updated in pyproject.toml"
+
+# Commit version bump
+git add pyproject.toml
+if [[ -n $(git status --porcelain) ]]; then
+    git add -A
+    git commit -m "chore: Bump version to $NEW_VERSION
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+Co-Authored-By: Claude <noreply@anthropic.com>"
+    print_success "Version bump committed"
+else
+    print_info "No changes to commit"
+fi
+
+# Create and push tag
+print_info "Creating tag v$NEW_VERSION..."
+git tag -a "v$NEW_VERSION" -m "Release v$NEW_VERSION"
+print_success "Tag created"
+
+# Push changes and tag
+print_info "Pushing to origin..."
+git push origin main
+git push origin "v$NEW_VERSION"
+print_success "Pushed to origin"
+
+# Create GitHub release (if gh is available)
+if command -v gh &> /dev/null; then
+    print_info "Creating GitHub release..."
+    
+    # Generate release notes
+    PREV_TAG=$(git describe --tags --abbrev=0 "v$NEW_VERSION^" 2>/dev/null || echo "")
+    if [[ -n "$PREV_TAG" ]]; then
+        CHANGELOG_URL="https://github.com/markomanninen/mcp-debugpy/compare/${PREV_TAG}...v${NEW_VERSION}"
+    else
+        CHANGELOG_URL="https://github.com/markomanninen/mcp-debugpy/commits/v${NEW_VERSION}"
+    fi
+    
+    RELEASE_NOTES="## v$NEW_VERSION
+
+$(git log "${PREV_TAG}..HEAD" --pretty=format:"- %s" 2>/dev/null | grep -v "^- chore: Bump version" || echo "- Release v$NEW_VERSION")
+
+**Full Changelog**: $CHANGELOG_URL"
+    
+    gh release create "v$NEW_VERSION" \
+        --title "v$NEW_VERSION" \
+        --notes "$RELEASE_NOTES"
+    
+    print_success "GitHub release created: https://github.com/markomanninen/mcp-debugpy/releases/tag/v$NEW_VERSION"
+else
+    print_info "gh CLI not found - skipping GitHub release creation"
+    print_info "Create release manually at: https://github.com/markomanninen/mcp-debugpy/releases/new?tag=v$NEW_VERSION"
+fi
+
+print_success "Release v$NEW_VERSION completed!"
+print_info "Next steps:"
+print_info "  1. Verify release at: https://github.com/markomanninen/mcp-debugpy/releases"
+print_info "  2. Monitor CI: https://github.com/markomanninen/mcp-debugpy/actions"