bot.did.listPendingAuthorizations long polls no longer take the server's 512 shared request slots. They use their own pool of 1024, at most one per account. A poll that finds the pool full, or its account already polling, gets an immediate 429 with Retry-After: 5 rather than a place in a queue. A wait=0 call takes no slot.
Before this, agentd's parked polls filled every shared slot. pds.did.bot then queued every other request, _health and token refresh included, for 7–9 seconds, and any client allowed to open enough polls could stall the server. A test parks polls against a tiny shared limit and checks that _health and describeServer still answer promptly. /health gains a longPolls block: open polls, the maximum, and both kinds of refusal.
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