Overlord

ci: pin golangci-lint to v1.62.0

ovl: add persistent shell mode (-p) and exec subcommand

fix: patch 11 npm dependency vulnerabilities (3 critical, 3 high, 5 moderate)

fix: resolve terminal rendering mismatch with tmux by syncing PTY size on creation

test: remove obsolete --no-lan-disc flag from ghost invocations