test: qualify immutable models and Phase 9 regression

docs/redesign/phase-9/p9-sec-02/model/cleanup.py

@@ -0,0 +1,12 @@
+"""Owned local qualification cleanup evidence."""
+import subprocess
+
+
+def container_absent(name):
+    try:
+        query=subprocess.run(['rtk','proxy','docker','ps','--all','--no-trunc','--filter',f'name=^/{name}$','--format','{{.ID}}'],capture_output=True,text=True,timeout=5)
+    except (OSError,subprocess.TimeoutExpired) as error:
+        raise RuntimeError('Cleanup daemon query unavailable or timed out.') from error
+    if query.returncode != 0:
+        raise RuntimeError('Cleanup daemon query failed; absence is unverified.')
+    return not query.stdout.strip()