docs: refresh XFCE screenshot

fix: restore ssh-triggered XRDP session bootstrap for live tweaks

fix: stop spawning XRDP sessions during SSH installs

fix: avoid ssh hang on xfce4-panel restart fallback

fix: fallback to dbus-run-session when XRDP bus is unavailable

fix: improve XRDP session-context wait and diagnostics

docs: refresh XFCE screenshot

fix: wait for XRDP session context after xrdp-sesrun

fix: make apt installs noninteractive by default

docs: move requirements up and remove usage sections

docs: place one-line install before ISO notes in both READMEs

docs: refresh XFCE screenshot

docs: add memory requirement and baseline usage guidance

docs: remind manual OpenClaw install at script end

docs: remove unnecessary sudo note for curl pipeline