add build, DMG creation scripts, CI/CD workflows

- build-bundle.sh: regenerates Info.plist with KLInfo entries for all 4
  layout versions, sets CalVer bundle version, validates plists
- create-dmg.sh: packages bundle into a DMG with drag-and-drop symlink
  to /Library/Keyboard Layouts/
- release.yml: GitHub Actions workflow that validates, builds, creates DMG,
  publishes GitHub Release on CalVer tag push
- validate.yml: CI validation on push/PR for layout and script changes
- Info.plist now declares all 4 layouts (was only v2.0)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/build-bundle.sh

@@ -0,0 +1,145 @@
+#!/usr/bin/env bash
+# Build and validate the EurKEY-macOS keyboard layout bundle.
+#
+# Regenerates Info.plist with correct KLInfo entries for all layout versions,
+# sets the bundle version, and validates the bundle structure.
+#
+# Usage: bash scripts/build-bundle.sh [--version YYYY.MM.DD]
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
+BUNDLE_DIR="${PROJECT_DIR}/EurKey-macOS.bundle"
+CONTENTS_DIR="${BUNDLE_DIR}/Contents"
+RESOURCES_DIR="${CONTENTS_DIR}/Resources"
+
+# parse arguments
+VERSION="${1:-$(date +%Y.%m.%d)}"
+if [[ "${1:-}" == "--version" ]]; then
+	VERSION="${2:?missing version argument}"
+fi
+
+BUNDLE_ID="de.felixfoertsch.keyboardlayout.EurKEY-macOS"
+BUNDLE_NAME="EurKEY-macOS"
+
+# layout versions to include
+VERSIONS=("v1.2" "v1.3" "v1.4" "v2.0")
+
+echo "Building ${BUNDLE_NAME} ${VERSION}"
+echo "Bundle: ${BUNDLE_DIR}"
+echo
+
+# --- validate that all required files exist ---
+errors=0
+for ver in "${VERSIONS[@]}"; do
+	keylayout="${RESOURCES_DIR}/EurKEY ${ver}.keylayout"
+	icns="${RESOURCES_DIR}/EurKEY ${ver}.icns"
+	if [[ ! -f "${keylayout}" ]]; then
+		echo "ERROR: missing ${keylayout}"
+		errors=$((errors + 1))
+	fi
+	if [[ ! -f "${icns}" ]]; then
+		echo "ERROR: missing ${icns}"
+		errors=$((errors + 1))
+	fi
+done
+
+for lang in en de es; do
+	strings="${RESOURCES_DIR}/${lang}.lproj/InfoPlist.strings"
+	if [[ ! -f "${strings}" ]]; then
+		echo "ERROR: missing ${strings}"
+		errors=$((errors + 1))
+	fi
+done
+
+if [[ $errors -gt 0 ]]; then
+	echo "FAILED: ${errors} missing file(s)"
+	exit 1
+fi
+
+# --- generate Info.plist ---
+cat > "${CONTENTS_DIR}/Info.plist" << 'PLIST_HEADER'
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleIdentifier</key>
+PLIST_HEADER
+
+echo "	<string>${BUNDLE_ID}</string>" >> "${CONTENTS_DIR}/Info.plist"
+
+cat >> "${CONTENTS_DIR}/Info.plist" << 'PLIST_NAME'
+	<key>CFBundleName</key>
+PLIST_NAME
+
+echo "	<string>${BUNDLE_NAME}</string>" >> "${CONTENTS_DIR}/Info.plist"
+
+cat >> "${CONTENTS_DIR}/Info.plist" << 'PLIST_VERSION'
+	<key>CFBundleVersion</key>
+PLIST_VERSION
+
+echo "	<string>${VERSION}</string>" >> "${CONTENTS_DIR}/Info.plist"
+
+# add KLInfo for each version
+for ver in "${VERSIONS[@]}"; do
+	layout_name="EurKEY ${ver}"
+	# generate input source ID: bundle id + layout name with spaces removed, lowercased
+	source_id_suffix=$(echo "eurkey${ver}" | tr '[:upper:]' '[:lower:]' | tr -d ' ')
+	source_id="${BUNDLE_ID}.${source_id_suffix}"
+
+	cat >> "${CONTENTS_DIR}/Info.plist" << KLINFO_ENTRY
+	<key>KLInfo_${layout_name}</key>
+	<dict>
+		<key>TICapsLockLanguageSwitchCapable</key>
+		<false/>
+		<key>TISIconIsTemplate</key>
+		<true/>
+		<key>TISInputSourceID</key>
+		<string>${source_id}</string>
+		<key>TISIntendedLanguage</key>
+		<string>en</string>
+	</dict>
+KLINFO_ENTRY
+done
+
+cat >> "${CONTENTS_DIR}/Info.plist" << 'PLIST_FOOTER'
+</dict>
+</plist>
+PLIST_FOOTER
+
+echo "Generated Info.plist with ${#VERSIONS[@]} layout entries"
+
+# --- generate version.plist ---
+cat > "${CONTENTS_DIR}/version.plist" << VPLIST
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>BuildVersion</key>
+	<string>${VERSION}</string>
+	<key>ProjectName</key>
+	<string>${BUNDLE_NAME}</string>
+	<key>SourceVersion</key>
+	<string>${VERSION}</string>
+</dict>
+</plist>
+VPLIST
+
+echo "Generated version.plist (${VERSION})"
+
+# --- validate with plutil ---
+if command -v plutil &> /dev/null; then
+	plutil -lint "${CONTENTS_DIR}/Info.plist" || exit 1
+	plutil -lint "${CONTENTS_DIR}/version.plist" || exit 1
+	echo "plist validation passed"
+fi
+
+# --- run layout validation ---
+if [[ -f "${SCRIPT_DIR}/validate_layouts.py" ]]; then
+	echo
+	python3 "${SCRIPT_DIR}/validate_layouts.py" || exit 1
+fi
+
+echo
+echo "Bundle build complete: ${BUNDLE_DIR}"
+echo "Version: ${VERSION}"