Harvest DragonX packaging + legal artifacts from compliant-rebrand

Legal: correct GPLv3 LICENSE (fixes garbled 'GENERAL GENERAL'), AUTHORS DragonX attribution, COPYING. Packaging: man pages REGENERATED from the 1.0.3 binaries via help2man (dragonxd/dragonx-cli/dragonx-tx.1 -> v1.0.3, correct dates), wired into doc/man/Makefile.am (dist_man1_MANS), orphaned hush*.1 removed. Init/openrc/systemd scripts, Debian packaging (control/changelog/copyright rebranded hush->dragonx + install stubs), example confs taken from origin/compliant-rebrand (c05134e77). REMAINING follow-ups: (1) debian/changelog still tops at 1.0.0 - add a 1.0.3 entry; (2) dragonx-cli --help hardcodes rpcport default 18030 (hush) - fix the HelpMessage string in source then regen. Staged on 176 for review; not pushed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

contrib/init/dragonxd.service

@@ -0,0 +1,22 @@
+[Unit]
+Description=Hush: Speak And Transact Freely
+After=network.target
+
+[Service]
+User=hush
+Group=hush
+
+Type=forking
+PIDFile=/var/lib/dragonxd/dragonxd.pid
+ExecStart=/usr/bin/dragonxd -daemon -pid=/var/lib/dragonxd/dragonxd.pid \
+-conf=/etc/hush/hush.conf -datadir=/var/lib/dragonxd -disablewallet
+
+Restart=always
+PrivateTmp=true
+TimeoutStopSec=60s
+TimeoutStartSec=2s
+StartLimitInterval=120s
+StartLimitBurst=5
+
+[Install]
+WantedBy=multi-user.target