0b53e18e23
firefox-9 is published (build 5/5, drive-gate 5/5, full e2e 137/1-skip, fppro
ALL CRITICAL CLEAN, WebRTC real, sha256-verified download path). Point the
wrapper at it.
Guard: ensure_binary() now refuses any version in BROKEN_VERSIONS (={firefox-8})
with a clear error instead of handing over an undrivable binary — a cached
firefox-8 from before this bump would otherwise keep being used silently. Tests:
the current BINARY_VERSION can never be in BROKEN_VERSIONS; firefox-8 stays
flagged; ensure_binary("firefox-8") raises.