test(unraid): add in-host validation runner

servers/unraid/tail2-pose-server/compose.yaml

@@ -96,3 +96,28 @@ services:
       retries: 6
       start_period: 180s
 
+  validate:
+    image: tail2-pose-server:0.1.0
+    container_name: tail2-pose-validate
+    network_mode: host
+    gpus: all
+    restart: "no"
+    entrypoint: ["/bin/bash", "-lc"]
+    depends_on:
+      tail2-pose-server:
+        condition: service_healthy
+    volumes:
+      - /mnt/user/appdata/tail2-pose-server/app:/app:ro
+      - /mnt/user/appdata/tail2-pose-server/models:/models:ro
+      - /mnt/user/appdata/tail2-pose-server/secrets/api-token:/run/secrets/api-token:ro
+      - ./validation:/validation
+    command:
+      - |
+        set -euo pipefail
+        python -m pytest -q /opt/tail2-tests > /validation/unit-tests.txt 2>&1
+        python /app/tail2/validate_runtime.py > /validation/runtime.json
+        python -m pip freeze | sort > /validation/pip-freeze.txt
+        find / -xdev -type f -name 'libndi.so*' -print > /validation/ndi-runtime-files.txt 2>/dev/null || true
+        nvidia-smi --query-gpu=name,driver_version,memory.total,memory.used,temperature.gpu --format=csv,noheader > /validation/gpu.csv
+        sha256sum /models/*.pth > /validation/model-sha256.txt
+        chmod 0666 /validation/*.txt /validation/*.json /validation/*.csv