ChatGPT's update to harden software and run db updates.

tests/tenants_runner.py

@@ -0,0 +1,7 @@
+import json,os,subprocess
+from application_harness import Application,PHP,ROOT
+app=Application()
+try:
+    ids=app.fixture('tenantSeed');env=app.env.copy();env['HCR_TENANT_IDS']=json.dumps(ids)
+    subprocess.run(PHP+['tests/tenants_service.php'],cwd=ROOT,env=env,check=True)
+finally:app.close()