trafficshaper: add nftables firewall backend - #29830

Checking PR #29830: trafficshaper: add nftables firewall backend (Makefile Audit Profile)

Commit 9683ebb - trafficshaper: add nftables firewall backend:

✅ Makefile contains valid assignment operators and no spaces after ':='
✅ Makefile does not reuse PKG_NAME in call, define, or eval lines
✅ File additions contain clean UNIX (LF) line termination
✅ All modified files contain a trailing newline
✅ Configuration file 'net/trafficshaper/files/trafficshaper.conf' destined for '/etc/config/' is a valid UCI configuration file

Package Release Audit:

✅ Package net/trafficshaper version unchanged, but PKG_RELEASE bumped from '3' to '4'