Insert NATS JetStream log bus + S3 raw archive

Rework the logging pipeline around a durable message bus so logs survive a
ClickHouse outage, can be replayed after a bad transform, and fan out to
multiple independent consumers. Add long-term raw-log backup to S3.

Topology becomes edge -> JetStream -> consumers -> sinks:
- Dedicated JetStream NATS cluster (3 replicas, file storage) in the logging
  namespace. Deliberately separate from app messaging (streamstack) for
  blast-radius isolation. Stream LOGS (subjects logs.>, retention=limits, 40GiB
  / 72h) is the outage buffer; durable consumers give independent offsets.
- Edge publishers (thin): the k8s DaemonSet and a new VM-ingest Deployment
  (HTTP NDJSON front door behind the logs-ingest Gateway) publish into JetStream
  (logs.k8s.<ns>.<container> / logs.vm.<host>). No parsing on the edge.
- Transform tier (StatefulSet): pulls the whole stream via the durable
  `transform` consumer, routes by subject, shapes, and remains the sole
  ClickHouse writer. Its disk buffer shrinks (JetStream is the outage buffer).
- Archiver (Deployment): its OWN durable `archiver` consumer (independent
  offsets — archive lag never affects the ClickHouse path) writes RAW,
  pre-transform events to a Ceph RGW S3 bucket (cephrgw-operator ObjectStoreUser
  + Bucket + BucketAccess) as gzipped NDJSON keyed by raw/<subject>/YYYY/MM/DD/.
  Default subject filter is Vault audit (logs.k8s.vault.>), configurable.

Auth: distinct NATS users (producer publish-only, consumer pull+ack, admin for
the stream/consumer bootstrap Job) with passwords from Vault (nats-auth Secret);
S3 creds from the BucketAccess Secret. Streams/consumers are provisioned by an
idempotent PostSync bootstrap Job.

Add local kubeconform schemas for the ceph.unkin.net CRDs (datreeio lacks them)
and extend the vector-test CI to cover the agent, VM-ingest and archiver
configs. Verified end-to-end locally: NATS ACLs, vector JetStream publish, and
durable-consumer pull+ack (at-least-once) all work.

Claude-Session: https://claude.ai/code/session_015ur3i7D2azsMAWTSVABApv

apps/base/logging/vector/agent.yaml

@@ -0,0 +1,43 @@
+---
+# Vector EDGE agent pipeline (DaemonSet) — thin publisher, single source of
+# truth. Mounted via existingConfigMaps (NOT the chart's customConfig, whose
+# Helm `tpl` pass collides with Vector's own {{ }} / ${ } syntax). Tails all pod
+# logs, attaches only routing tokens, publishes to JetStream. No parsing.
+data_dir: /vector-data-dir
+
+api:
+  enabled: false
+
+sources:
+  kubernetes_logs:
+    type: kubernetes_logs
+
+transforms:
+  # Routing metadata only: NATS-subject-safe namespace + container tokens.
+  keymeta:
+    type: remap
+    inputs:
+      - kubernetes_logs
+    source: |
+      ns = to_string(.kubernetes.pod_namespace || "unknown") ?? "unknown"
+      .ns_token = replace(ns, r'[^a-zA-Z0-9_-]', "_")
+      cont = to_string(.kubernetes.container_name || "unknown") ?? "unknown"
+      .cont_token = replace(cont, r'[^a-zA-Z0-9_-]', "_")
+
+sinks:
+  to_jetstream:
+    type: nats
+    inputs:
+      - keymeta
+    url: nats://nats.logging.svc.cluster.local:4222
+    connection_name: vector-agent
+    subject: "logs.k8s.{{ ns_token }}.{{ cont_token }}"
+    jetstream:
+      enabled: true
+    auth:
+      strategy: user_password
+      user_password:
+        user: log-producer
+        password: ${NATS_PRODUCER_PASSWORD}
+    encoding:
+      codec: json