Reuse the outstanding auth_ticket instead of minting a fresh one on every
/client load, so reloading the page or opening a second tab no longer
invalidates a game session that is still connecting. New tickets are minted
with a guard against the previously-read value so concurrent launches
converge on the same ticket.
Revoke the auth_ticket when signing out (toolbar, header and sign-out
everywhere) so a leaked ticket can no longer be replayed against the
emulator, and prevent SSO leakage via referral by setting no-referrer on the
client iframe. Strip all whitespace from the ticket prefix and build the
launch URL through a tested helper that handles query strings, existing sso
params and URL fragments correctly.
openhands