diff --git a/Makefile b/Makefile
index cdab51b..c2a2dfa 100644
--- a/Makefile
+++ b/Makefile
@@ -116,14 +116,14 @@ cov: ensure-hatch
 
 .PHONY: e2e-local
 e2e-local: ensure-hatch
-	@echo "Running e2e tests against local Azurite (E2E_BASE_URL=http://localhost:7071)..."
-	@echo "E2E_EXPECTED_VERSION defaults to the locally installed candidate version (hatch version); override to certify a different deployed build."
-	@E2E_BASE_URL=http://localhost:7071 E2E_EXPECTED_VERSION=$${E2E_EXPECTED_VERSION:-$$($(HATCH) version)} $(HATCH) run e2e-azure
+	@echo "Local-only HTTP smoke; App Insights may skip. This cannot create a certification record."
+	@echo "E2E_EXPECTED_VERSION defaults to the locally installed candidate version (hatch version)."
+	@FAIL_ON_SKIP=0 E2E_BASE_URL=$${E2E_BASE_URL:-http://localhost:7071} E2E_EXPECTED_VERSION=$${E2E_EXPECTED_VERSION:-$$($(HATCH) version)} $(HATCH) run e2e-local
 
 .PHONY: e2e-azure
 e2e-azure: ensure-hatch
 	@echo "Running e2e tests against Azure (E2E_BASE_URL and E2E_EXPECTED_VERSION must both be set)..."
-	@$(HATCH) run e2e-azure
+	@FAIL_ON_SKIP=1 $(HATCH) run e2e-azure
 
 .PHONY: build
 build: ensure-hatch
diff --git a/pyproject.toml b/pyproject.toml
index c90aeec..b7de4a3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -97,6 +97,7 @@ lint = "hatch run style && hatch run typecheck"
 test = "pytest -v tests"
 cov = "pytest --cov-report=term-missing --cov-report=html --cov-report=xml tests/"
 e2e-azure = "pytest -v -m e2e tests/e2e/ --no-cov"
+e2e-local = "pytest -v -m e2e tests/e2e/ --no-cov"
 docs = "mkdocs serve"
 precommit = "pre-commit run --all-files"
 precommit-install = "pre-commit install"
diff --git a/tests/test_ci_skip_policy.py b/tests/test_ci_skip_policy.py
index 5e3df57..8e9eeb3 100644
--- a/tests/test_ci_skip_policy.py
+++ b/tests/test_ci_skip_policy.py
@@ -2,7 +2,10 @@
 
 from __future__ import annotations
 
+import os
 from pathlib import Path
+import subprocess
+import sys
 from typing import Any
 
 import pytest
@@ -38,3 +41,55 @@ def test_azure_certification_wires_app_insights() -> None:
     _, env = _lane("e2e-azure.yml", "-m e2e")
     assert env.get("APPINSIGHTS_NAME")
     assert env.get("E2E_RESOURCE_GROUP")
+
+
+def test_missing_app_insights_fails_certification_without_network() -> None:
+    env = {
+        **os.environ,
+        "FAIL_ON_SKIP": "1",
+        "APPINSIGHTS_NAME": "",
+        "E2E_BASE_URL": "http://127.0.0.1:1",
+    }
+    result = subprocess.run(
+        [
+            sys.executable,
+            "-m",
+            "pytest",
+            "--no-cov",
+            "-m",
+            "e2e",
+            "tests/e2e/test_logging_e2e.py::test_structured_log_appears_in_app_insights",
+        ],
+        env=env,
+        capture_output=True,
+        text=True,
+        timeout=30,
+    )
+    assert result.returncode == 1, result.stdout + result.stderr
+    assert "APPINSIGHTS_NAME not set" in result.stdout
+    assert "FAIL_ON_SKIP=1" in result.stdout
+
+
+def test_missing_upstream_module_fails_canary_instead_of_passing_skip() -> None:
+    script = """
+import importlib.abc
+import sys
+import pytest
+
+class MissingModule(importlib.abc.MetaPathFinder):
+    def find_spec(self, fullname, path=None, target=None):
+        if fullname == 'opentelemetry.sdk._logs':
+            raise ModuleNotFoundError('simulated removed upstream module', name=fullname)
+
+sys.meta_path.insert(0, MissingModule())
+sys.exit(pytest.main(['--no-cov', 'tests/test_otel_contract.py']))
+"""
+    result = subprocess.run(
+        [sys.executable, "-c", script],
+        env={**os.environ, "FAIL_ON_SKIP": "1"},
+        capture_output=True,
+        text=True,
+        timeout=30,
+    )
+    assert result.returncode != 0, result.stdout + result.stderr
+    assert "simulated removed upstream module" in result.stdout
diff --git a/tests/test_makefile_contract.py b/tests/test_makefile_contract.py
index bd9ac2b..e4ee924 100644
--- a/tests/test_makefile_contract.py
+++ b/tests/test_makefile_contract.py
@@ -63,3 +63,12 @@ def test_check_type_checks_once_and_never_upgrades_pip(tmp_path: Path) -> None:
     scripts = tomllib.loads((ROOT / "pyproject.toml").read_text())["tool"]["hatch"]["envs"]
     assert scripts["default"]["scripts"]["lint"].count("hatch run typecheck") == 1
     assert "--upgrade" not in (ROOT / "Makefile").read_text()
+
+
+def test_local_e2e_explicitly_uses_noncertifying_entrypoint(tmp_path: Path) -> None:
+    dry = _make(tmp_path, "-n", "e2e-local").stdout
+    assert "run e2e-local" in dry
+    assert "FAIL_ON_SKIP=0" in dry
+    scripts = tomllib.loads((ROOT / "pyproject.toml").read_text())["tool"]["hatch"]["envs"]
+    assert "e2e-local" in scripts["default"]["scripts"]
+    assert "certification.json" not in dry