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/debian/changelog

@@ -1,3 +1,12 @@
+dragonx (1.0.0) stable; urgency=medium
+
+  * Initial release of DragonX, forked from Hush Full Node
+  * Full legal-compliant rebrand: binaries, config, documentation
+  * RandomX proof-of-work, 36-second block time, fully shielded transactions
+  * New binary names: dragonxd, dragonx-cli, dragonx-tx
+
+ -- DragonX <dan-s-dev@proton.me>  Mon, 03 Mar 2026 00:00:00 +0000
+
 hush (3.10.5) stable; urgency=medium
 
   * DragonX is no longer supported by this codebase