feat: initialize serverAppConfigs with podman stacks for Dankserver and Dankclaw

- Dankserver stack: RomM, Copyparty, Calibre-Web, node-exporter
- Dankclaw stack: Gluetun VPN (SearXNG tunnel), SearXNG+Valkey, ComfyUI
  (CPU backend), OpenWebUI, Hermes, Gitea+Postgres (migrated), Caddy
  reverse proxy, Grafana+Prometheus+Loki+Alloy observability
- Caddyfiles with .local hostname convention and basicauth homepage
- bind-mount storage policy, no named volumes
- deploy.sh mirroring vllmScripts git workflow (push -> pull -> restart -> health)
- docs/ Obsidian vault: per-service docs from frank-default-small research
  subagents (promtail EOL -> Alloy; gitea SECRET_KEY preservation; ComfyUI --cpu)
- bats test suite at 6 seams — 22 tests green

docs/Dankclaw/Valkey.md

@@ -0,0 +1,51 @@
+# Valkey
+
+Valkey is the cache and limiter store for SearXNG. It replaces Redis as the default in the official SearXNG deployment.
+
+**Host:** Dankclaw — **Docs:** https://valkey.io
+
+## Facts (from research)
+
+| Item | Value |
+|------|-------|
+| Image | `valkey/valkey:9-alpine` |
+| Port | 6379 (internal, on the SearXNG network) |
+| Role | SearXNG limiter + result cache |
+
+## Why Valkey
+
+The official SearXNG docker-compose ships a `searxng-valkey` container. Valkey is the Redis fork under the Linux Foundation umbrella; the SearXNG project moved to it as the default cache.
+
+## Configuration
+
+```yaml
+services:
+  valkey:
+    image: valkey/valkey:9-alpine
+    restart: always
+    volumes:
+      - /opt/searxng/valkey:/data
+```
+
+SearXNG connects to it via `settings.yml`:
+
+```yaml
+valkey:
+  url: "valkey://searxng-valkey:6379/0"
+```
+
+## Volumes
+
+| Container path | Host path (convention) |
+|----------------|------------------------|
+| `/data` | `/opt/searxng/valkey` |
+
+## Gotchas
+
+- The limiter relies on Valkey; without it SearXNG falls back to in-memory state and rate limiting is per-restart.
+- Keep Valkey on the same podman network as SearXNG.
+
+## See Also
+
+- [[SearXNG]] — the consumer
+- [[Dankclaw Stack]]