diff --git a/tools/security-tracker-stats-dashboard/README.md b/tools/security-tracker-stats-dashboard/README.md
index a5732e391..f1c83c030 100644
--- a/tools/security-tracker-stats-dashboard/README.md
+++ b/tools/security-tracker-stats-dashboard/README.md
@@ -99,9 +99,11 @@ run is ~5–10 minutes on a 250-issue tracker; incremental re-renders
 1. `default-config.yaml` (in this directory).
 2. `$TRACKER_STATS_CONFIG` overlay YAML, when set (typically
    `<adopter-repo>/.apache-magpie-overrides/security-tracker-stats.yaml`).
-   Deep-merged with the default. **The `milestones` and `categories`
-   lists are REPLACED entirely** (not concatenated) — overlaying a
-   single category requires re-stating the whole list.
+   Deep-merged with the default. **Every list is REPLACED entirely**
+   (not concatenated) — `milestones`, `categories`, `bot_prefixes`,
+   `keywords`, and any other list-valued key. Overlaying a single
+   entry requires re-stating the whole list, otherwise the defaults
+   are silently dropped.
 3. Env-var quick overrides for the most common knobs:
    `TRACKER_STATS_BUCKETS`, `TRACKER_STATS_START`,
    `TRACKER_STATS_UPSTREAM_REPO`.
diff --git a/tools/security-tracker-stats-dashboard/default-config.yaml b/tools/security-tracker-stats-dashboard/default-config.yaml
index 5581bc162..cb8c6b902 100644
--- a/tools/security-tracker-stats-dashboard/default-config.yaml
+++ b/tools/security-tracker-stats-dashboard/default-config.yaml
@@ -163,8 +163,15 @@ triage:
     - Security Model
     - cve-worthy
     - CVE-worthy
+  # Skill-authored comments, skipped when measuring human triage
+  # activity. The first entry is the canonical machine marker every
+  # framework skill writes (`<!-- apache-magpie: <kind> vN -->`); the
+  # rest are prose prefixes from older comment shapes.
+  #
+  # NOTE: this list is REPLACED wholesale by an overlay, not merged --
+  # an overlay adding one prefix must restate the whole list.
   bot_prefixes:
-    - "<!-- airflow-s status rollup v"
+    - "<!-- apache-magpie: "
     - "**Sync "
     - "**Imported on "
     - "**Status update"