chrome-use

feat(session): session stop <name> + session prune + lifecycle docs (#48)

chore(ext): pack ab-connect 0.4.12 zip + crx (ABExt.ungroupTab for keep)

feat(cleanup): default idle-shutdown + keep — stop leaving scratch tabs/groups behind

docs(viewport): document viewport/resize command for responsive debugging (#47)

fix(build): include browser.rs clear_viewport/via_relay (#47) + cargo fmt