Establish clean homelab infrastructure baseline

Reorganize the brownfield repository, remove retired and generated artifacts, harden ignore rules, and record the GitOps/IaC redesign.

platform/observability/docker-hosts/vector.yaml

@@ -0,0 +1,30 @@
+# Vector: tail all Docker container logs on this host and ship them to VictoriaLogs
+# via the Elasticsearch bulk API (the VM-recommended Vector sink). Endpoint + host
+# label come from the environment (see .env / compose.yaml).
+sources:
+  docker:
+    type: docker_logs
+
+transforms:
+  enrich:
+    type: remap
+    inputs: [docker]
+    source: |
+      .host = get_env_var!("HOST_LABEL")
+
+sinks:
+  vlogs:
+    type: elasticsearch
+    inputs: [enrich]
+    endpoints:
+      - "${VLOGS_ENDPOINT}"      # e.g. https://vlogs.tail7e769.ts.net/insert/elasticsearch/
+    mode: bulk
+    api_version: v8
+    compression: gzip
+    healthcheck:
+      enabled: false
+    query:
+      _msg_field: message
+      _time_field: timestamp
+      # Group log streams by host + container so LogsQL stream filters work well.
+      _stream_fields: host,container_name