Status: IN
All messages generated within a single `tick()` call are delivered and fully resolved (including cascading responses) in a `while all_messages` loop before the tick returns.
Source: entries/2026/05/29/leader-election-leader_election.md
while all_messages:
next_messages = []
for msg in all_messages:
responses = receiver.receive_message(msg)
next_messages.extend(responses)
all_messages = next_messages # deliver until quiescent