fix(athena): add termination guards to non-interactive retry loop

src/agents/athena/non-interactive-prompt.ts

@@ -67,9 +67,9 @@ Track every task_id from the response for use in Step 5.
 - Parse returned metadata JSON for member states.
 - If a member's elapsed runtime exceeds {MEMBER_MAX_RUNNING_SECONDS}, mark as failed (timeout).
 - If a member is idle and last_activity_s > {STUCK_THRESHOLD_SECONDS}, mark as failed (stuck).
-- If retry_failed_if_others_finished is false AND any members are failed while at least one other member is still non-terminal, jump to Step 9 immediately for opportunistic retries, then return to Step 5.
-- If retry_failed_if_others_finished is true, continue until ALL members reach terminal state before Step 6.
-- If retry_failed_if_others_finished is false and no retry candidates exist yet, continue tracking until more status updates arrive.
+- If ALL members are now terminal (completed/error/cancelled/marked failed), proceed to Step 6 immediately.
+- If retry_failed_if_others_finished is false AND retry_on_fail > 0 AND any members are failed while at least one other member is still non-terminal, jump to Step 9 immediately for opportunistic retries, then return to Step 5.
+- Otherwise, continue tracking until one of the above conditions is met.
 
 ### Step 6: Collect results with council_finalize.
 - Call: council_finalize(task_ids=[...], name="{topic-slug}", intent="{intent}", question="{original question}", prompt_file="{path from Step 4.1}", mode="non-interactive")
@@ -100,6 +100,7 @@ If retry_on_fail > 0 and failed members exist:
 - If retry_failed_if_others_finished is false, retry opportunistically as soon as failures are detected while others are still running.
 - If retry_failed_if_others_finished is true, only retry after all non-failed members have completed.
 - If cancel_retrying_on_quorum is true, stop retrying once quorum (2+ successful) is met.
+- If retry_on_fail is 0, no failed members remain, or retry budget is exhausted, do NOT re-launch members; proceed to Step 10.
 
 ### Step 10: Synthesize using council_finalize runtime guidance.
 - Read every member's archive_file with Read tool.