Title screen: licence line and a link to the repository at the bottom

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

www/dc_plugin.js

@@ -109,6 +109,10 @@
             pending = new TextEncoder().encode(v);
             return pending.length;
         };
+        // opens a web page in a new tab (repository link)
+        env.dc_open_url = function (up, ul) {
+            try { window.open(str(up, ul), "_blank", "noopener"); } catch (e) { }
+        };
         // the device's main pointer is a finger (phones, tablets)
         env.dc_coarse_pointer = function () {
             try { return window.matchMedia("(pointer: coarse)").matches ? 1 : 0; } catch (e) { return 0; }