Point the manifests at the real repository URL

Also documents the two things that stop an install dead: the repository must be
public for Home Assistant to clone it anonymously (a private repo shows nothing
in the store and gives no useful error), and config.yaml's `version` must be
bumped for every change or Supervisor reuses the previously built image.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016NckgXecasQb2eSsPYNSW6

goodwe_controller/config.yaml

@@ -5,7 +5,7 @@ description: >-
   Drives a GoodWe ES/BP battery inverter over RS485 by emulating its smart
   meter, holding net grid exchange at zero and running a monthly battery
   maintenance cycle.
-url: https://github.com/REPLACE-ME/goodwe-addon
+url: https://gittea.kammenstraatha.duckdns.org/admin/goodwe-addon
 arch:
   - aarch64
   - amd64