debian: auto-sync package version from setup.py

Extract version from setup.py at build time using grep and pass to
dh_gencontrol, ensuring the debian package version always matches
the upstream version.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: tridge

debian/rules

@@ -7,6 +7,9 @@
 PY3VERS	:= $(shell py3versions -vs)
 PY3VER	:= $(shell py3versions -vd)
 
+# Extract version from setup.py to keep debian package version in sync
+UPSTREAM_VERSION := $(shell grep '^version = ' setup.py | head -1 | cut -d'"' -f2)
+
 include /usr/share/dpkg/pkg-info.mk
 
 include /usr/share/python3/python.mk
@@ -68,7 +71,7 @@ binary-indep: build install
 	dh_fixperms -i
 	dh_installdeb -i
 	dh_shlibdeps -i
-	dh_gencontrol -i
+	dh_gencontrol -i -- -v$(UPSTREAM_VERSION)
 	dh_md5sums -i
 	dh_builddeb -i
 
@@ -87,7 +90,7 @@ binary-arch: build install
 	dh_fixperms -a
 	dh_installdeb -a
 	dh_shlibdeps -a
-	dh_gencontrol -a
+	dh_gencontrol -a -- -v$(UPSTREAM_VERSION)
 	dh_md5sums -a
 	dh_builddeb -a