Rework the avo:skills install into a screen-per-question panel (#4694)

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: Paul-Bob

.gitignore

@@ -81,3 +81,8 @@ brakeman_results.html
 .env
 .env.test
 *~
+
+# Written by `rails g avo:skills`, by hand or from its specs. Generated output.
+spec/dummy/.agents/
+spec/dummy/.claude/
+spec/dummy/.cursor/