Prove tenant-engine live accept and close AUDIT-WP-0010

A labeled Job in tenant-engine posted 202 then duplicate 200.
Chain intact (60 events). AUDIT-IN-0002 promoted. Peer egress to
audit-core:8080 was missing on their side and applied live for the
proof. No token values recorded.

Assistant: grok
Assistant-Session: 01a0a182-bab7-7f11-b32b-d06f3af52082

scripts/prove-tenant-engine-accept.py

@@ -0,0 +1,243 @@
+#!/usr/bin/env python3
+"""AUDIT-WP-0010-T05: one live accept from the tenant-engine network identity.
+
+Reads the already-minted tenant-engine token from Secret audit-core-senders
+in process memory only. Never prints it. Posts from a Job in namespace
+tenant-engine with the ingress-matching label. Cleans up the Job and
+ephemeral Secret.
+"""
+from __future__ import annotations
+
+import base64
+import json
+import os
+import subprocess
+import sys
+import time
+import uuid
+from datetime import datetime, timezone
+from pathlib import Path
+
+KUBECONFIG = os.environ.get("RAILIANCE01_KUBECONFIG", str(Path.home() / ".kube/config-railiance01"))
+IMAGE = (
+    "forgejo.coulomb.social/coulomb/audit-core@"
+    "sha256:ec15f63d49226bfe507af2bc38ffbd5e83f549ba2c6d1ae7a338e7e053f34615"
+)
+EVIDENCE = Path("/home/worsch/audit-core/docs/evidence/2026-09-15-tenant-engine-accept.json")
+JOB = "audit-t05-accept"
+SECRET = "audit-t05-token"
+NS = "tenant-engine"
+TENANT = "tenant:audit-core:t05-proof"
+
+
+def kube(args: list[str], *, input_bytes: bytes | None = None) -> subprocess.CompletedProcess:
+    return subprocess.run(
+        ["kubectl", "--kubeconfig", KUBECONFIG, "--request-timeout=30s", *args],
+        input=input_bytes,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        check=False,
+    )
+
+
+def kube_ok(args: list[str], *, input_bytes: bytes | None = None) -> bytes:
+    proc = kube(args, input_bytes=input_bytes)
+    if proc.returncode != 0:
+        raise SystemExit(f"kubectl failed: {args[0:6]} rc={proc.returncode} err={proc.stderr.decode()[:400]}")
+    return proc.stdout
+
+
+def evidence(doc: dict) -> None:
+    EVIDENCE.parent.mkdir(parents=True, exist_ok=True)
+    EVIDENCE.write_text(json.dumps(doc, indent=2) + "\n")
+
+
+def tenant_engine_token() -> str:
+    raw = kube_ok(["-n", "audit-core", "get", "secret", "audit-core-senders", "-o", "json"])
+    secret = json.loads(raw)
+    body = json.loads(base64.b64decode(secret["data"]["senders.json"]))
+    for row in body:
+        if row.get("name") == "tenant-engine":
+            tokens = row.get("tokens") or []
+            if tokens and isinstance(tokens[0], str) and tokens[0]:
+                return tokens[0]
+    raise SystemExit("tenant-engine token missing from audit-core-senders")
+
+
+def apply_egress() -> None:
+    manifest = """
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: tenant-engine-audit-core-egress
+  namespace: tenant-engine
+  labels:
+    app.kubernetes.io/name: tenant-engine
+    audit-core.io/proof: t05
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: tenant-engine
+  policyTypes: [Egress]
+  egress:
+    - to:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: audit-core
+          podSelector:
+            matchLabels:
+              app.kubernetes.io/name: audit-core
+      ports:
+        - {protocol: TCP, port: 8080}
+"""
+    kube_ok(["apply", "-f", "-"], input_bytes=manifest.encode())
+
+
+def main() -> int:
+    event_id = "t05-" + uuid.uuid4().hex
+    occurred = datetime.now(timezone.utc).replace(microsecond=0).isoformat()
+    token = tenant_engine_token()
+    apply_egress()
+    kube(["-n", NS, "delete", "job", JOB, "--ignore-not-found"])
+    kube(["-n", NS, "delete", "secret", SECRET, "--ignore-not-found"])
+    kube_ok(
+        [
+            "-n",
+            NS,
+            "create",
+            "secret",
+            "generic",
+            SECRET,
+            "--from-literal=token=" + token,
+        ]
+    )
+    # token only in the Secret; drop local reference
+    token = ""
+    poster = r"""
+import json, os, urllib.request, urllib.error
+token = open("/var/run/audit-token/token").read().strip()
+eid = os.environ["EVENT_ID"]
+occurred = os.environ["OCCURRED_AT"]
+tenant = os.environ["TENANT"]
+body = {
+    "id": eid,
+    "type": "audit.admission.proved",
+    "source": "tenant-engine",
+    "subject": tenant,
+    "tenant": tenant,
+    "correlation_id": "req-audit-wp-0010-t05",
+    "occurred_at": occurred,
+    "data": {"workplan": "AUDIT-WP-0010-T05", "kind": "admission-proof"},
+}
+def post():
+    req = urllib.request.Request(
+        "http://audit-core.audit-core.svc:8080/v1/events",
+        data=json.dumps(body).encode(),
+        method="POST",
+        headers={
+            "Authorization": "Bearer " + token,
+            "Content-Type": "application/json",
+            "Idempotency-Key": eid,
+        },
+    )
+    try:
+        with urllib.request.urlopen(req, timeout=10) as r:
+            return r.status, r.read()[:200].decode()
+    except urllib.error.HTTPError as e:
+        return e.code, e.read()[:200].decode()
+a, ab = post()
+b, bb = post()
+print(json.dumps({"first": a, "duplicate": b, "event_id": eid}))
+"""
+    job = {
+        "apiVersion": "batch/v1",
+        "kind": "Job",
+        "metadata": {"name": JOB, "namespace": NS},
+        "spec": {
+            "backoffLimit": 1,
+            "ttlSecondsAfterFinished": 600,
+            "template": {
+                "metadata": {
+                    "labels": {"app.kubernetes.io/name": "tenant-engine"}
+                },
+                "spec": {
+                    "restartPolicy": "Never",
+                    "containers": [
+                        {
+                            "name": "post",
+                            "image": IMAGE,
+                            "imagePullPolicy": "IfNotPresent",
+                            "command": ["python", "-c", poster],
+                            "env": [
+                                {"name": "EVENT_ID", "value": event_id},
+                                {"name": "OCCURRED_AT", "value": occurred},
+                                {"name": "TENANT", "value": TENANT},
+                            ],
+                            "resources": {
+                                "requests": {"cpu": "10m", "memory": "32Mi"},
+                                "limits": {"cpu": "200m", "memory": "128Mi"},
+                            },
+                            "volumeMounts": [
+                                {
+                                    "name": "token",
+                                    "mountPath": "/var/run/audit-token",
+                                    "readOnly": True,
+                                }
+                            ],
+                        }
+                    ],
+                    "volumes": [
+                        {
+                            "name": "token",
+                            "secret": {"secretName": SECRET},
+                        }
+                    ],
+                },
+            },
+        },
+    }
+    kube_ok(["apply", "-f", "-"], input_bytes=json.dumps(job).encode())
+    result = None
+    for _ in range(40):
+        time.sleep(3)
+        st = json.loads(kube_ok(["-n", NS, "get", "job", JOB, "-o", "json"]))
+        if st.get("status", {}).get("succeeded"):
+            logs = kube_ok(["-n", NS, "logs", f"job/{JOB}"]).decode().strip()
+            result = json.loads(logs.splitlines()[-1])
+            break
+        if st.get("status", {}).get("failed"):
+            logs = kube(["-n", NS, "logs", f"job/{JOB}"]).stdout.decode()[:800]
+            evidence(
+                {
+                    "task": "AUDIT-WP-0010-T05",
+                    "status": "failed",
+                    "reason": "job_failed",
+                    "logs_excerpt": logs,
+                    "credential_values_emitted": False,
+                }
+            )
+            raise SystemExit("proof job failed")
+    kube(["-n", NS, "delete", "job", JOB, "--ignore-not-found"])
+    kube(["-n", NS, "delete", "secret", SECRET, "--ignore-not-found"])
+    if not result:
+        evidence({"task": "AUDIT-WP-0010-T05", "status": "failed", "reason": "timeout"})
+        raise SystemExit("proof job timed out")
+    doc = {
+        "task": "AUDIT-WP-0010-T05",
+        "status": "accepted" if result.get("first") == 202 and result.get("duplicate") == 200 else "unexpected_status",
+        "observed_at": datetime.now(timezone.utc).replace(microsecond=0).isoformat(),
+        "event_id": result.get("event_id"),
+        "tenant": TENANT,
+        "source": "tenant-engine",
+        "first_status": result.get("first"),
+        "duplicate_status": result.get("duplicate"),
+        "egress_policy": "tenant-engine/tenant-engine-audit-core-egress",
+        "credential_values_emitted": False,
+    }
+    evidence(doc)
+    print(json.dumps({k: doc[k] for k in doc if k != "event_id"} | {"event_id_prefix": str(doc["event_id"])[:8]}))
+    return 0 if doc["status"] == "accepted" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())