publisher, deployer: neutral defaults in the packaged copies

Default host is localhost, user is "user", paths are under /home/user;
the publisher apps_dir no longer points at a personal Tomcat. Tests of the
copies follow.

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

srcpkgs/publisher/files/share/publish.toml.example

@@ -13,7 +13,7 @@
 [server]
 host = "server.example.com"
 user = "user"
-apps_dir = "/home/user/app/docker/tomcat/data/webapps/ttt/WEB-INF/apps"
+apps_dir = "/home/user/app/apps"
 check_url = "http://localhost:8010/download.jsp?f="
 state_dir = "/home/user/app_deploy"
 keep = 3