shouldInterruptAgent now treats every terminal task status (completed/failed/cancelled, via isAgentTaskTerminal) plus a 404 task-not-found as an interruption signal, so the daemon stops a local agent once the backend has finalized the task — e.g. the runtime offline sweeper flipping running -> failed during a disconnect/reconnect. Previously only `cancelled`/404 interrupted, so the agent ran to completion and its CompleteTask call failed against a non-running row, wasting compute and adding log noise.
Closes#3877