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/hermesagent-install.sh

@@ -57,7 +57,7 @@ git config --system --add safe.directory /home/hermes/.hermes/hermes-agent 2>/de
 msg_ok "Installed Hermes Agent"
 
 msg_info "Configuring API Server"
-API_SERVER_KEY=$(openssl rand -base64 32 | tr -dc 'a-zA-Z0-9' | cut -c1-32)
+API_SERVER_KEY=$(random_password 32)
 mkdir -p /home/hermes/.hermes
 cat <<EOF >/home/hermes/.hermes/.env
 API_SERVER_ENABLED=true