ui: place offline SVG button directly beside "SVG herunterladen"

NetBox renders the native download link inside each per-face
elevation card, not through a plugin buttons() extension point, so
there's no server-side hook to inject a matching link next to it. The
right_page() extension now emits only a script (no separate sidebar
panel) that finds every a[href*="render=svg"] link, reads its face=
param, and inserts a matching "SVG offline" button right after it. The
button's href stays in sync with the rack-view select the same way
the previous panel's links did.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "netbox-utilities"
-version = "0.12.1"
+version = "0.12.2"
 description = "Navigation, tenant utilities, connection VLANs, partial-width racks, and bulk operations for NetBox 4.6/4.7"
 readme = "README.md"
 requires-python = ">=3.12"