diff --git a/tests/e2e/lint_cleanup_traps.sh b/tests/e2e/lint_cleanup_traps.sh
index a20d9a6f..ddaf35e5 100755
--- a/tests/e2e/lint_cleanup_traps.sh
+++ b/tests/e2e/lint_cleanup_traps.sh
@@ -2,10 +2,16 @@
 # lint_cleanup_traps.sh — regression gate for the OSS-shape program's
 # "all E2E tests must have proper cleanup" bar (RFC #2873).
 #
-# Asserts: every shell file under tests/e2e/ that calls `mktemp` ALSO
-# installs an `EXIT` trap somewhere in the file. The trap is the
-# minimum-viable guarantee that scratch files won't leak when an
-# assertion or curl exits the script non-zero.
+# Asserts:
+#   1. every shell file under tests/e2e/ that calls `mktemp` ALSO
+#      installs an `EXIT` trap somewhere in the file.
+#   2. every staging tenant E2E script that provisions a real org uses a
+#      slug prefix caught by sweep-stale-e2e-orgs.yml and installs an
+#      EXIT trap.
+#
+# These are the minimum-viable guarantees that scratch files and real
+# staging EC2 tenants converge back to zero when an assertion or curl
+# exits the script non-zero.
 #
 # Why this lints (instead of the test runner enforcing): shell scripts
 # can't easily be wrapped by an outer harness without breaking the
@@ -21,6 +27,7 @@
 set -euo pipefail
 
 cd "$(dirname "$0")"
+repo_root="$(cd ../.. && pwd)"
 
 violations=0
 for f in test_*.sh; do
@@ -32,6 +39,76 @@ for f in test_*.sh; do
   fi
 done
 
+if ! python3 - "$repo_root" <<'PY'
+import re
+import sys
+from pathlib import Path
+
+repo = Path(sys.argv[1])
+e2e_dir = repo / "tests" / "e2e"
+sweeper = repo / ".gitea" / "workflows" / "sweep-stale-e2e-orgs.yml"
+
+errors: list[str] = []
+sweeper_text = sweeper.read_text()
+
+required_sweeper_prefixes = ('"e2e-"', '"rt-e2e-"')
+for prefix in required_sweeper_prefixes:
+    if prefix not in sweeper_text:
+        errors.append(
+            f"::error file=.gitea/workflows/sweep-stale-e2e-orgs.yml::"
+            f"missing stale-org sweeper prefix {prefix}"
+        )
+
+slug_assignment_re = re.compile(r'^\s*SLUG=(["\'])(?P<value>.+?)\1', re.MULTILINE)
+covered_prefixes = ("e2e-", "rt-e2e-")
+
+for path in sorted(e2e_dir.glob("test_*staging*.sh")):
+    text = path.read_text()
+    creates_org = "/cp/admin/orgs" in text and re.search(r"\bPOST\b", text)
+    deletes_org = "/cp/admin/tenants" in text and re.search(r"\bDELETE\b", text)
+    if not (creates_org or deletes_org):
+        continue
+
+    rel = path.relative_to(repo)
+    if not re.search(r"trap\s+.*\bEXIT\b", text):
+        errors.append(
+            f"::error file={rel}::staging tenant E2E touches CP org lifecycle "
+            "but has no EXIT trap for teardown"
+        )
+
+    assignments = [m.group("value") for m in slug_assignment_re.finditer(text)]
+    if not assignments:
+        errors.append(
+            f"::error file={rel}::staging tenant E2E touches CP org lifecycle "
+            "but has no quoted SLUG=... assignment for scoped cleanup"
+        )
+        continue
+
+    for value in assignments:
+        literal_prefix = re.split(r"[$`]", value, maxsplit=1)[0]
+        if not literal_prefix:
+            errors.append(
+                f"::error file={rel}::SLUG assignment starts with dynamic data "
+                f"({value!r}); use a fixed e2e-* or rt-e2e-* prefix so "
+                "sweep-stale-e2e-orgs can reap orphans"
+            )
+            continue
+        if not literal_prefix.startswith(covered_prefixes):
+            errors.append(
+                f"::error file={rel}::SLUG prefix {literal_prefix!r} is not "
+                "covered by sweep-stale-e2e-orgs.yml; use e2e-* or rt-e2e-*"
+            )
+
+if errors:
+    print("\n".join(errors))
+    raise SystemExit(1)
+
+print("✓ staging tenant E2E slug prefixes are covered by sweep-stale-e2e-orgs and use EXIT traps")
+PY
+then
+  violations=$((violations + 1))
+fi
+
 if [ "$violations" -gt 0 ]; then
   echo "::error::$violations shell E2E file(s) leak scratch on early exit. See above."
   exit 1