New directory structure: - app/core/ = OpenClaw program - app/runtime/ = Node.js - data/ = user config, memory, backups (never overwritten on upgrade) - system/ = migration scripts Features: - Auto port detection (18789-18799) - macOS Gatekeeper auto-fix (xattr quarantine removal) - Windows UTF-8 BOM + CRLF encoding - Config auto-migration on startup - Platform-specific packages (Mac ARM64 + Windows x64)