diff --git a/BACKLOG-dstamp.md b/BACKLOG-dstamp.md
index 4f2f883..b694bef 100644
--- a/BACKLOG-dstamp.md
+++ b/BACKLOG-dstamp.md
@@ -48,3 +48,26 @@ trigger); `lifecycle.assert_upgrade_converged` closes the wait_healthy blind spo
 Minor race window in `assert_upgrade_converged` (first poll could see "none" before Docker
 starts the roll) is covered: with stop-first, a post-race rollback also fails `wait_healthy`.
 No blocker. Formal verdict awaits Builder's `claim(dstamp)` commit.
+
+**Blast-radius sweep @2026-06-11T17:4x:**
+
+All 24 enrolled recipes swept for `failure_action: rollback` + `order: start-first` in `compose.yml`:
+
+| Recipe    | failure_action | order       | ccci overlay | upgrade tests | recent upgrade | risk |
+|-----------|---------------|-------------|--------------|---------------|----------------|------|
+| discourse | rollback      | start-first | YES (fixed)  | yes           | FIXED          | fixed |
+| drone     | rollback      | start-first | no           | NO tests      | n/a            | latent, no CI exposure |
+| keycloak  | rollback      | start-first | no           | yes           | PASS L4        | latent, low (JVM, lighter than Rails) |
+| n8n       | rollback      | start-first | no           | yes           | PASS L4        | latent, low (Node.js) |
+| traefik   | rollback      | STOP-first  | no           | no            | n/a            | SAFE |
+| all others | none or absent | —          | —            | —             | —              | not at risk |
+
+`assert_upgrade_converged` (added in 0cc31a5) provides a general harness backstop: if any
+recipe's rolling update rolls back or pauses, the upgrade is failed HONESTLY for all recipes
+— not just discourse. So keycloak/n8n are already covered by the harness fix even without
+overlay changes.
+
+Recommended overlay addition for keycloak if/when OOM symptoms appear:
+`deploy.update_config.order: stop-first` (same pattern as discourse). Not urgent — current
+host load shows no rollback symptom for keycloak/n8n and they're lighter apps than discourse.
+drone has no upgrade tier in cc-ci; no action needed there.