diff --git a/apps/decodex/src/orchestrator/daemon.rs b/apps/decodex/src/orchestrator/daemon.rs
index e50a30b2..10059692 100644
--- a/apps/decodex/src/orchestrator/daemon.rs
+++ b/apps/decodex/src/orchestrator/daemon.rs
@@ -367,6 +367,17 @@ where
 		return Ok(Vec::new());
 	};
 	let worktree_mapping = state_store.worktree_for_issue(&issue.id)?;
+
+	if let Some(disposition) = superseded_run_disposition(state_store, &run_attempt)? {
+		return Ok(vec![ActiveRunReconciliation {
+			issue: issue.clone(),
+			run_attempt,
+			worktree_mapping,
+			disposition,
+			workflow: workflow.clone(),
+		}]);
+	}
+
 	let action_workflow = active_reconciliation_workflow_for_lease(
 		workflow,
 		Some(ActiveWorkflowOverride { child, workflow: child_context.workflow }),
@@ -1022,6 +1033,13 @@ where
 	let Some(run_attempt) = context.state_store.run_attempt(run_attempt.run_id())? else {
 		return Ok(());
 	};
+
+	if superseded_run_disposition(context.state_store, &run_attempt)?.is_some() {
+		clear_retry_schedule_and_release(context.retry_queue, context.state_store, child.issue_id)?;
+
+		return Ok(());
+	}
+
 	let issue_id = run_attempt.issue_id();
 	let Some(issue) = refresh_issue(context.tracker, issue_id)? else {
 		clear_retry_schedule_and_release(context.retry_queue, context.state_store, issue_id)?;
diff --git a/apps/decodex/src/orchestrator/reconciliation.rs b/apps/decodex/src/orchestrator/reconciliation.rs
index af29f592..7fece890 100644
--- a/apps/decodex/src/orchestrator/reconciliation.rs
+++ b/apps/decodex/src/orchestrator/reconciliation.rs
@@ -36,15 +36,17 @@ where
 			&issue,
 			&run_attempt,
 		);
-	let retained_closeout =
-		terminal_issue_keeps_retained_closeout(
+		let retained_closeout = terminal_issue_keeps_retained_closeout(
 			tracker,
 			&issue,
 			project,
 			action_workflow,
 			state_store,
 		)?;
-		let disposition = if !retained_closeout && is_terminal_issue(&issue, action_workflow) {
+		let disposition =
+			if let Some(disposition) = superseded_run_disposition(state_store, &run_attempt)? {
+				Some(disposition)
+			} else if !retained_closeout && is_terminal_issue(&issue, action_workflow) {
 			Some(ActiveRunDisposition::Terminal)
 		} else if !retained_closeout
 			&& is_issue_nonactive_for_run(&issue, action_workflow)
@@ -125,6 +127,16 @@ where
 	};
 	let worktree_mapping = state_store.worktree_for_issue(issue_id)?;
 
+	if let Some(disposition) = superseded_run_disposition(state_store, &run_attempt)? {
+		return Ok(vec![ActiveRunReconciliation {
+			issue,
+			run_attempt,
+			worktree_mapping,
+			disposition,
+			workflow: workflow.clone(),
+		}]);
+	}
+
 	if run_attempt.status() != "failed" || !is_issue_active_for_run(&issue, workflow) {
 		return Ok(Vec::new());
 	}
@@ -178,6 +190,18 @@ where
 			ActiveRunDisposition::RetainedReviewComplete => {
 				reconcile_retained_review_complete_active_run(project, state_store, &action)?;
 			},
+			ActiveRunDisposition::Superseded {
+				newer_run_id,
+				newer_attempt_number,
+			} => {
+				reconcile_superseded_active_run(
+					project,
+					state_store,
+					&action,
+					newer_run_id,
+					*newer_attempt_number,
+				)?;
+			},
 			ActiveRunDisposition::Terminal => {
 				tracing::info!(
 					project_id = project.service_id(),
@@ -226,6 +250,36 @@ where
 	Ok(())
 }
 
+fn reconcile_superseded_active_run(
+	project: &ServiceConfig,
+	state_store: &StateStore,
+	action: &ActiveRunReconciliation,
+	newer_run_id: &str,
+	newer_attempt_number: i64,
+) -> Result<()> {
+	tracing::info!(
+		project_id = project.service_id(),
+		issue_id = action.issue.id,
+		issue = action.issue.identifier,
+		run_id = action.run_attempt.run_id(),
+		attempt = action.run_attempt.attempt_number(),
+		superseded_by_run_id = newer_run_id,
+		superseded_by_attempt = newer_attempt_number,
+		disposition = "superseded",
+		"Reconciling superseded active run without tracker writeback."
+	);
+
+	mark_run_attempt_if_active(state_store, action.run_attempt.run_id(), "interrupted")?;
+
+	if let Some(lease) = state_store.lease_for_issue(&action.issue.id)?
+		&& lease.run_id() == action.run_attempt.run_id()
+	{
+		state_store.clear_lease(&action.issue.id)?;
+	}
+
+	Ok(())
+}
+
 fn reconcile_retained_review_complete_active_run(
 	project: &ServiceConfig,
 	state_store: &StateStore,
@@ -423,6 +477,25 @@ fn retained_review_handoff_matches_run(
 		&& marker.branch_name() == worktree_mapping.branch_name())
 }
 
+fn superseded_run_disposition(
+	state_store: &StateStore,
+	run_attempt: &RunAttempt,
+) -> Result<Option<ActiveRunDisposition>> {
+	let Some(latest_attempt) = state_store.latest_run_attempt_for_issue(run_attempt.issue_id())?
+	else {
+		return Ok(None);
+	};
+
+	if latest_attempt.attempt_number() <= run_attempt.attempt_number() {
+		return Ok(None);
+	}
+
+	Ok(Some(ActiveRunDisposition::Superseded {
+		newer_run_id: latest_attempt.run_id().to_owned(),
+		newer_attempt_number: latest_attempt.attempt_number(),
+	}))
+}
+
 fn stalled_idle_duration(
 	state_store: &StateStore,
 	run_attempt: &RunAttempt,
diff --git a/apps/decodex/src/orchestrator/tests/recovery/reconciliation.rs b/apps/decodex/src/orchestrator/tests/recovery/reconciliation.rs
index ff1a1560..e6051c05 100644
--- a/apps/decodex/src/orchestrator/tests/recovery/reconciliation.rs
+++ b/apps/decodex/src/orchestrator/tests/recovery/reconciliation.rs
@@ -139,6 +139,77 @@ fn active_run_reconciliation_detects_stalled_run_without_protocol_events() {
 	}));
 }
 
+#[test]
+fn active_run_reconciliation_supersedes_stale_lease_for_newer_attempt() {
+	let (_temp_dir, config, workflow) = temp_project_layout();
+	let state_store = StateStore::open_in_memory().expect("state store should open");
+	let issue = sample_issue_with_sort_fields(
+		"issue-superseded-lease",
+		"PUB-207",
+		"In Progress",
+		&[],
+		Some(3),
+		"2026-03-13T04:16:17.133Z",
+	);
+	let tracker = FakeTracker::new(vec![issue.clone()]);
+	let stale_run_id = "run-superseded-lease-1";
+	let newer_run_id = "run-superseded-lease-2";
+	let worktree_manager =
+		WorktreeManager::new(config.service_id(), config.repo_root(), config.worktree_root());
+
+	state_store
+		.record_run_attempt(stale_run_id, &issue.id, 1, "running")
+		.expect("stale run should record");
+	state_store
+		.record_run_attempt(newer_run_id, &issue.id, 2, "succeeded")
+		.expect("newer run should record");
+	state_store
+		.upsert_lease(config.service_id(), &issue.id, stale_run_id, "In Progress")
+		.expect("stale lease should record");
+
+	let actions = orchestrator::inspect_active_run_reconciliation_at(
+		&tracker,
+		&config,
+		&workflow,
+		&state_store,
+		None,
+		OffsetDateTime::now_utc().unix_timestamp(),
+	)
+	.expect("active-run inspection should succeed");
+
+	assert_eq!(actions.len(), 1);
+	assert!(matches!(
+		&actions[0].disposition,
+		ActiveRunDisposition::Superseded {
+			newer_run_id: observed_run_id,
+			newer_attempt_number: 2,
+		} if observed_run_id == newer_run_id
+	));
+
+	orchestrator::apply_active_run_reconciliation(
+		&tracker,
+		&config,
+		&state_store,
+		&worktree_manager,
+		actions,
+	)
+	.expect("superseded reconciliation should succeed");
+
+	assert!(state_store.lease_for_issue(&issue.id).expect("lease lookup should succeed").is_none());
+	assert_eq!(
+		state_store
+			.run_attempt(stale_run_id)
+			.expect("run attempt lookup should succeed")
+			.expect("stale run should exist")
+			.status(),
+		"interrupted"
+	);
+	assert!(
+		tracker.comments.borrow().is_empty(),
+		"superseded stale lease must not write needs-attention comments"
+	);
+}
+
 #[test]
 fn active_run_reconciliation_keeps_completed_closeout_lane_with_fresh_activity() {
 	let (_temp_dir, base_config, workflow) = temp_project_layout();
diff --git a/apps/decodex/src/orchestrator/tests/recovery/runtime_reentry.rs b/apps/decodex/src/orchestrator/tests/recovery/runtime_reentry.rs
index e8b721e1..d2669cc0 100644
--- a/apps/decodex/src/orchestrator/tests/recovery/runtime_reentry.rs
+++ b/apps/decodex/src/orchestrator/tests/recovery/runtime_reentry.rs
@@ -71,6 +71,101 @@ fn exited_child_reconciliation_detects_stalled_failed_runs_from_protocol_idle()
 	}));
 }
 
+#[test]
+fn exited_child_reconciliation_ignores_superseded_failed_run() {
+	let (_temp_dir, config, workflow) = temp_project_layout();
+	let state_store = StateStore::open_in_memory().expect("state store should open");
+	let issue = sample_issue_with_sort_fields(
+		"issue-superseded-after-exit",
+		"PUB-206",
+		"In Progress",
+		&[],
+		Some(3),
+		"2026-03-13T04:16:17.133Z",
+	);
+	let tracker = FakeTracker::new(vec![issue.clone()]);
+	let stale_run_id = "run-superseded-after-exit-1";
+	let newer_run_id = "run-superseded-after-exit-2";
+	let worktree_path = config.worktree_root().join(&issue.identifier);
+	let worktree_manager =
+		WorktreeManager::new(config.service_id(), config.repo_root(), config.worktree_root());
+
+	fs::create_dir_all(&worktree_path).expect("worktree path should exist");
+
+	state_store
+		.record_run_attempt(stale_run_id, &issue.id, 1, "failed")
+		.expect("stale run should record");
+	state_store
+		.record_run_attempt(newer_run_id, &issue.id, 2, "running")
+		.expect("newer run should record");
+	state_store
+		.upsert_lease(config.service_id(), &issue.id, newer_run_id, "In Progress")
+		.expect("newer lease should record");
+	state_store
+		.upsert_worktree(
+			config.service_id(),
+			&issue.id,
+			"x/pubfi-pub-206",
+			&worktree_path.display().to_string(),
+		)
+		.expect("worktree mapping should record");
+
+	state::write_run_protocol_activity_marker(
+		&worktree_path,
+		&ProtocolActivityMarker {
+			run_id: stale_run_id,
+			attempt_number: 1,
+			thread_id: None,
+			turn_id: None,
+			event_count: 1,
+			last_event_type: "thread/status/changed",
+			child_agent_activity: None,
+			protocol_activity: None,
+		},
+	)
+	.expect("protocol marker should write");
+
+	let actions = orchestrator::inspect_exited_daemon_child_reconciliation_at(
+		&tracker,
+		&config,
+		&workflow,
+		&state_store,
+		&issue.id,
+		stale_run_id,
+		OffsetDateTime::now_utc().unix_timestamp() + ACTIVE_RUN_IDLE_TIMEOUT.as_secs() as i64 + 1,
+	)
+	.expect("exited child inspection should succeed");
+
+	assert_eq!(actions.len(), 1);
+	assert!(matches!(
+		&actions[0].disposition,
+		ActiveRunDisposition::Superseded {
+			newer_run_id: observed_run_id,
+			newer_attempt_number: 2,
+		} if observed_run_id == newer_run_id
+	));
+
+	orchestrator::apply_active_run_reconciliation(
+		&tracker,
+		&config,
+		&state_store,
+		&worktree_manager,
+		actions,
+	)
+	.expect("superseded reconciliation should succeed");
+
+	let lease = state_store
+		.lease_for_issue(&issue.id)
+		.expect("lease lookup should succeed")
+		.expect("newer lease should remain");
+
+	assert_eq!(lease.run_id(), newer_run_id);
+	assert!(
+		tracker.comments.borrow().is_empty(),
+		"superseded stale child must not write needs-attention comments"
+	);
+}
+
 #[test]
 fn run_project_once_prefers_recovered_in_progress_worktree_after_empty_state_startup() {
 	let (_temp_dir, config, workflow) = temp_project_layout();
diff --git a/apps/decodex/src/orchestrator/types.rs b/apps/decodex/src/orchestrator/types.rs
index de193cfa..2361bf76 100644
--- a/apps/decodex/src/orchestrator/types.rs
+++ b/apps/decodex/src/orchestrator/types.rs
@@ -1378,6 +1378,10 @@ pub(crate) enum RetryDispatchDecision {
 #[derive(Clone, Debug)]
 pub(crate) enum ActiveRunDisposition {
 	RetainedReviewComplete,
+	Superseded {
+		newer_run_id: String,
+		newer_attempt_number: i64,
+	},
 	Terminal,
 	NonActive,
 	Stalled { idle_for: Duration },