The sold A/B stalled twice on preconditions no headless check exercised: the staging
identity had no squad (the hub refuses to open, showing a squad update error), and any
route without a Rust owner falls through to a deliberately dead Python upstream and
answers 502. Each cost a full operator cycle.
Sweeps the routes the client is observed to request and separates three failure classes
that need different fixes: 502/PYTHON_FALLBACK (no Rust owner), missing_integrity (200
but the underlying state is absent -- exactly 'no extension stored' before the squad
was seeded), and 200-but-unusable (a squad with zero occupied slots). A 200 is not
proof the client is satisfied, so squad responses are judged on occupied slots.
Also reads the host's own classification for the requests just made, since the host is
the authority on ownership and integrity rather than the response body.
Every path is verified against what the client actually sends. A first pass flagged
five 'fatal' routes that were my own guesses -- /accountinfo (client uses
/user/accountinfo), bare /squad (uses /squad/active), and /watchlist (camelCase
watchList). Crying wolf about the stack is worse than not checking, so the list now
carries only observed paths and that trap is written down in the comment.
Current result: 14 ok, 0 integrity warnings, 0 fatal.
funman300