- snapshot -c (compact) now always keeps lines with an interactive ARIA role
(button/link/textbox/combobox/option/…), not only `ref=`/`": "` lines — so a
clickable control can't vanish from compact output and leave the agent clicking
an empty ref (issue #2 P1). Additive: only ever keeps more. compact tests green.
- stale-ref error now leads with "take a fresh snapshot" and points to the `eval`
fallback for ref-churning SPAs, and demotes AGENT_BROWSER_VERIFY_REF=0 to a
flagged last resort instead of presenting it as the fix (issue #3 P1).