Refactor/core qol adoption (#17655)

* Scripts: close every msg_info block with msg_ok

Past-tense msg_info calls that should have been msg_ok, notices that opened a block before a prompt, and blocks without a closing msg_ok. These already left a stale spinner; with core's block stack they would resume it after every later msg_ok.

* Generate passwords with random_password

openssl rand -base64 | tr -dc | head -c returned fewer characters than asked for, and the unfiltered | cut variants put / and + into passwords that end up in DSNs and sed expressions. Secrets an app decodes as base64 are unchanged. Requires community-scripts/core#61.

* Keep data directories through CLEAN_INSTALL instead of copying them

create_backup copied uploads, storage and similar directories twice per update and needed their size again in free space. CLEAN_INSTALL_KEEP moves them aside instead. Only directories the upstream release does not ship, in scripts that restored right after the fetch. Requires community-scripts/core#61.

* Drop the 300s uv timeout overrides

setup_uv exports UV_HTTP_TIMEOUT=600 now; the scripts' 300 only lowered it. Requires community-scripts/core#61.

install/graylog-install.sh

@@ -16,7 +16,7 @@ update_os
 MONGO_VERSION="8.2" setup_mongodb
 
 msg_info "Setup Graylog Data Node"
-PASSWORD_SECRET=$(openssl rand -base64 18 | tr -dc 'a-zA-Z0-9' | head -c16)
+PASSWORD_SECRET=$(random_password 16)
 curl -fsSL "https://packages.graylog2.org/repo/packages/graylog-7.0-repository_latest.deb" -o "graylog-7.0-repository_latest.deb"
 $STD dpkg -i graylog-7.0-repository_latest.deb
 apt_update_safe
@@ -27,7 +27,7 @@ msg_ok "Setup Graylog Data Node"
 
 msg_info "Setup ${APPLICATION}"
 $STD apt install graylog-server
-ROOT_PASSWORD=$(openssl rand -base64 18 | tr -dc 'a-zA-Z0-9' | head -c16)
+ROOT_PASSWORD=$(random_password 16)
 cat <<EOF >~/graylog.creds
 ${APPLICATION} Credentials
 Admin User: admin