v0.6.2 — Windows support fixes

Bug-fix release focused on Windows support.

Fixed

• Windows AI-CLI detection and launch — mex sync and mex setup now detect an installed AI CLI on Windows and launch it correctly. Detection used which (absent on Windows), so every tool reported as not installed and interactive mode silently fell back to copy-paste even when Claude Code/Codex were present; it now probes with where. Launch used spawn/spawnSync, which threw ENOENT on the claude.cmd wrapper; it now uses cross-spawn. runToolInteractive also no longer treats a spawn failure or timeout as a successful session. (#85, #86)
• Cross-platform path output and global config — drift issue paths, heartbeat stale files, scanner entries, and event-log paths are normalized to forward slashes on Windows; global config and telemetry id now respect Windows USERPROFILE, with a new MEX_HOME override. (#78)
• checkPaths false positives — checkPaths now only validates inline code paths from ROUTER.md, eliminating false MISSING_PATH errors from context docs, pattern files, and tool-config files. (#79)
• Package version metadata guard — the CLI validates that package.json contains a non-empty string version before reading it at runtime. (#58)

npm: published — npm install -g mex-agent now installs 0.6.2.

Full changelog: https://github.com/mex-memory/mex/blob/v0.6.2/CHANGELOG.md