v0.3.0

What's Changed

• feat: Add high-performance mode configuration option
• feat: Add version number to release zip filename
• fix: Correct file paths and update documentation links
• docs: Convert file references to Markdown links
• docs: Add explanatory comments to release-drafter.yml
• chore: Remove unnecessary README.md from .github directory
• docs: Update code-signing.md to mention both release workflows
• refactor: Convert Makefile messages from Japanese to English
• docs: Add Japanese translations for all documentation
• docs: Update AI guidelines with branch management rules
• docs: Add AI assistant guidelines document
• docs: Improve certificate export security in documentation
• feat: Add automatic versioning and release on PR merge
• refactor: Consolidate documentation and remove duplication
• refactor: Move SIGNING.md to docs directory
• docs: Update and organize documentation
• fix: Rename draft release workflow from CI to CD
• docs: Add GitHub Actions security best practices
• refactor: Organize and rename GitHub Actions workflows
• fix: Prevent creating version tags on already-tagged commits
• fix: Remove shell comments from Makefile commands
• fix: Improve version management to check remote tags

Full Changelog: v0.2.1...v0.3.0