- chrome-use sessions: top-level alias for the daemon inventory (the skill
advertises sessions, so it's a natural guess that used to error).
- Unknown commands now suggest the nearest valid one (Levenshtein + prefix
match), staying silent when nothing is close (e.g. 'clik' -> click,
'sesions' -> sessions, 'xyzzy' -> no suggestion).
- tab <id>: probe the switched session and show a warning indicator instead of
a green check when it isn't responding yet, so a switch onto a re-attaching
(churned-tabId) session no longer reports false success. The #24 targetId
recovery self-heals within ~6s, hence a warning rather than a hard error.