sol v1.1.0: SearXNG web search, evaluator redesign, research agents

- SearXNG deployment in data namespace (free, no-tracking web search)
- sol-config: SearXNG URL, research config, identity agent, updated
  system prompt (DM search rules, research mode, silence, hard rules)
- sol-deployment: debug logging (RUST_LOG=sol=debug), full image path
- opensearch: tolerate missing prometheus-exporter plugin on OS 3

base/data/kustomization.yaml

@@ -13,6 +13,11 @@ resources:
   - opensearch-pvc.yaml
   - openbao-keys-placeholder.yaml
   - barman-vault-secret.yaml
+  - opensearch-servicemonitor.yaml
+  - opensearch-alertrules.yaml
+  - postgres-alertrules.yaml
+  - openbao-alertrules.yaml
+  - searxng-deployment.yaml
 
 helmCharts:
   # helm repo add cnpg https://cloudnative-pg.github.io/charts