Cherry-picks the macOS-specific pieces from PR #5: Python daemon using bleak (CoreBluetooth backend), LaunchAgent template, flash-mac.sh, and install-mac.sh. Token is read from the macOS Keychain ("Claude Code-credentials" service); Linux behavior is unchanged. README split into "macOS installation" and "Linux installation" sections with parallel Flash / Pair / Install subsections. Co-Authored-By: Chris Davidson <36679917+lorddavidson@users.noreply.github.com> Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>