tmux: provision italic terminfo automatically via activation

tmux: fallback to tmux-256color when italic terminfo is missing

doctor: remove bc dependency from CPU load check

Personalize default profile and harden self-install sync

Add scheduled daily/weekly/monthly VPS health reports

Add VPS monitoring with optional Slack/Telegram/Discord alerts

installer: streamline setup flow and refresh profile docs

Sync changes

test/docs: harden fresh VPS install check and update release status

docs: refresh release readiness status and announcement draft

perf: add predictability and high-node responsiveness audits

perf: improve CI caching and reduce transfer overhead

release: automate notes, drafting, and signed artifact flow

docs: add product-fit templates and governance policies

perf: add core responsiveness audit harness