diff --git a/scripts/ci/activity_acceptance_output.py b/scripts/ci/activity_acceptance_output.py
index 8a2ab25..ef38831 100644
--- a/scripts/ci/activity_acceptance_output.py
+++ b/scripts/ci/activity_acceptance_output.py
@@ -2,12 +2,14 @@
 
 from __future__ import annotations
 
+import hashlib
 import json
 import os
 import stat
 from pathlib import Path
 
 RESULT_NAME = "result.json"
+RESULT_LIMIT = 128 * 1024
 
 
 class Output:
@@ -83,9 +85,25 @@ def finish(self, report):
         except ValueError:
             report["output_failure"] = "identity_changed"
             report["complete"] = False
-        encoded = json.dumps(report, indent=2) + "\n"
-        if len(encoded.encode()) > 128 * 1024:
-            raise ValueError("terminal result exceeded its bound")
+        encoded = (json.dumps(report, indent=2) + "\n").encode()
+        if len(encoded) > RESULT_LIMIT:
+            report["complete"] = False
+            receipt = {
+                "complete": False, "output_failure": "terminal_result_exceeded_bound",
+                "oversized_report_bytes": len(encoded), "oversized_report_sha256": hashlib.sha256(encoded).hexdigest(),
+            }
+            if "output_failure" in report:
+                receipt["output_boundary_failure"] = str(report["output_failure"])[:1024]
+            for name in ("scenario", "artifact_source", "source_commit", "started_at", "finished_at",
+                         "runtime_id", "consumer_id", "network_id"):
+                value = report.get(name)
+                if isinstance(value, str) and len(value) <= 1024:
+                    receipt[name] = value
+            cleanup = json.dumps(report.get("cleanup"), sort_keys=True).encode()
+            receipt["cleanup"] = report.get("cleanup") if len(cleanup) <= RESULT_LIMIT // 2 else {
+                "retained": False, "bytes": len(cleanup), "sha256": hashlib.sha256(cleanup).hexdigest(),
+            }
+            encoded = (json.dumps(receipt, sort_keys=True, separators=(",", ":")) + "\n").encode()
         self._write(self.files[RESULT_NAME], encoded)
 
     def close(self):
diff --git a/scripts/ci/published-activity-acceptance.py b/scripts/ci/published-activity-acceptance.py
index 851730b..026d4a2 100644
--- a/scripts/ci/published-activity-acceptance.py
+++ b/scripts/ci/published-activity-acceptance.py
@@ -148,6 +148,15 @@ def packet_file(data):
     return {"base64": base64.b64encode(data).decode(), "sha256": hashlib.sha256(data).hexdigest()}
 
 
+def retain_consumer_ready(files, report, ready):
+    # The complete environment inventory can exceed the terminal receipt bound.
+    # Keep its bytes independently and bind them rather than duplicating them.
+    data = json.dumps({key: value for key, value in ready.items() if key != "sdk_inventory"}, indent=2).encode()
+    name = "consumer-ready.json"
+    files.write(name, data)
+    report["consumer_ready"] = {"file": name, "bytes": len(data), "sha256": hashlib.sha256(data).hexdigest()}
+
+
 def bind_bootstrap(captured):
     source = captured["bootstrap.py"].decode()
     for name, filename in (("CAPTURED_VERIFIER", VERIFIER_FILENAME), ("CAPTURED_ENTRY", "entry.py")):
@@ -525,7 +534,7 @@ def run_case(owned, selected, images, packet, bootstrap, report):
         name = "identity" if SCENARIO == "activity-identity" else SCENARIO
         owned.files.write(name + ".log", result["case_output"])
         owned.files.write(name + ".xml", result["junit"])
-        report["consumer_ready"] = {key: value for key, value in ready.items() if key != "sdk_inventory"}
+        retain_consumer_ready(owned.files, report, ready)
         session.send({"release": True})
         code = session.finish()
         report["consumer_exit"] = code
diff --git a/tests/test_activity_acceptance_authority.py b/tests/test_activity_acceptance_authority.py
index f910618..034ea3e 100644
--- a/tests/test_activity_acceptance_authority.py
+++ b/tests/test_activity_acceptance_authority.py
@@ -78,3 +78,45 @@ def test_replaced_result_cannot_become_a_successful_terminal_receipt(tmp_path):
         assert (output.path / "result.json").read_text() == "foreign"
     finally:
         output.close()
+
+
+def test_oversized_report_retains_bounded_nonpass_and_exact_cleanup_ids(tmp_path):
+    output = files.Output(tmp_path / "result")
+    cleanup = {"a" * 64: {"absent": True, "oom_killed": False}, "remaining-owned-labels": {"absent": True}}
+    report = {"complete": True, "scenario": "pagination", "runtime_id": "a" * 64,
+              "consumer_id": "b" * 64, "network_id": "c" * 64, "cleanup": cleanup,
+              "large_inventory": "x" * (files.RESULT_LIMIT + 1)}
+    try:
+        output.finish(report)
+        data = (output.path / "result.json").read_bytes()
+        receipt = json.loads(data)
+        assert len(data) <= files.RESULT_LIMIT
+        assert receipt["complete"] is report["complete"] is False
+        assert receipt["output_failure"] == "terminal_result_exceeded_bound"
+        assert receipt["runtime_id"] == "a" * 64
+        assert receipt["consumer_id"] == "b" * 64
+        assert receipt["network_id"] == "c" * 64
+        assert receipt["cleanup"] == cleanup
+        assert receipt["oversized_report_bytes"] > files.RESULT_LIMIT
+    finally:
+        output.close()
+
+
+def test_oversized_unbounded_cleanup_is_explicitly_unqualified_and_cannot_overwrite_foreign_path(tmp_path):
+    output = files.Output(tmp_path / "result")
+    original = tmp_path / "retained"
+    output.path.rename(original)
+    output.path.mkdir()
+    (output.path / "result.json").write_text("foreign")
+    report = {"complete": True, "cleanup": {"untrusted": "x" * (files.RESULT_LIMIT * 2)}}
+    try:
+        output.finish(report)
+        data = (original / "result.json").read_bytes()
+        receipt = json.loads(data)
+        assert len(data) <= files.RESULT_LIMIT
+        assert receipt["complete"] is False
+        assert receipt["output_boundary_failure"] == "identity_changed"
+        assert receipt["cleanup"]["retained"] is False
+        assert (output.path / "result.json").read_text() == "foreign"
+    finally:
+        output.close()
diff --git a/tests/test_published_activity_acceptance.py b/tests/test_published_activity_acceptance.py
index 1dbe4a8..88684ae 100644
--- a/tests/test_published_activity_acceptance.py
+++ b/tests/test_published_activity_acceptance.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import hashlib
 import importlib.util
 import json
 from copy import deepcopy
@@ -17,6 +18,26 @@
 runtime = runner.runtime
 
 
+def test_large_readiness_inventory_is_retained_and_hash_bound_without_terminal_duplication(tmp_path):
+    ready = {"distributions": "fixed locked wheels", "environment_inventory": {"entry": "x" * 200_000},
+             "sdk_inventory": {"already": "retained separately"}}
+    report = {"complete": True}
+    files = runner.output_files.Output(tmp_path / "result")
+    try:
+        runner.retain_consumer_ready(files, report, ready)
+        files.finish(report)
+        data = (files.path / "consumer-ready.json").read_bytes()
+        assert json.loads(data) == {key: value for key, value in ready.items() if key != "sdk_inventory"}
+        assert report["consumer_ready"] == {
+            "file": "consumer-ready.json", "bytes": len(data), "sha256": hashlib.sha256(data).hexdigest(),
+        }
+        result = (files.path / "result.json").read_bytes()
+        assert len(result) < runner.output_files.RESULT_LIMIT
+        assert json.loads(result)["complete"] is True
+    finally:
+        files.close()
+
+
 def configuration(role="runtime"):
     image = {
         "Id": "sha256:" + "f" * 64,