emex's ssd tokens appear IP-bound: a rotating proxy sends each hop of a
decode→tree→drill→parts flow from a different exit IP, so emex rejects the
ssd and returns empty (the rotating-Floxy verify still seeded 0). Pin the
Floxy exit IP with a sticky session (password suffix
`_session-<id>_lifetime-300`); a rolling session id is reused across the
flow and rotates near expiry or after a transport failure (dead IP → fresh
one). lifetime via EMEX_FLOXY_LIFETIME (0 = rotating).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>