Harden portable Redmine CLI runtime and cache writes

tests/test_nmi_runtime_profile.py

@@ -9,9 +9,18 @@ import pytest
 import redmine_ticket_nmi
 
 
-def test_runtime_profile_honors_explicit_production_mode_and_env_file(tmp_path):
+def test_runtime_profile_honors_explicit_production_mode_and_env_file(tmp_path, monkeypatch):
     production_env = tmp_path / "production.env"
     production_env.write_text("NMI_ENDPOINT_PRODUCTION=https://app.ldrprep.com/api.php\n")
+    # File existence alone is no longer readiness. Simulate the offline PHP
+    # diagnostic here; real CLI resolution is exercised by the integration tests.
+    import json
+    import subprocess
+    monkeypatch.setattr(redmine_ticket_nmi.subprocess, "run", lambda cmd, **kwargs:
+        subprocess.CompletedProcess(cmd, 0, json.dumps({
+            "ready": True, "mode": "production", "env_file": str(production_env),
+            "endpoint": "https://app.ldrprep.com/api.php", "problem": None,
+        }), ""))
 
     profile = redmine_ticket_nmi.resolve_runtime_profile(
         environ={