deploy: add macOS-friendly deploy scripts (local / hardware / prod)

- deploy.sh dispatcher + thin shims (deploy-local.sh / -hardware.sh / -prod.sh).
- scripts/deploy/local.sh: build UI bundle and serve via tmux session on :8770 for offline iteration.
- scripts/deploy/hardware.sh: rsync-based push to a Pi over SSH and restart bbctrl.service.
- scripts/deploy/prod.sh: bundle release tarball.
- scripts/deploy/patch_font_mime.py: hot-patches Chromium 72's broken WOFF2 mime handling on the kiosk Pi.

deploy-local.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+# Shorthand for ./deploy.sh local
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+exec "$SCRIPT_DIR/deploy.sh" local "$@"