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/matrix/sol-deployment.yaml

@@ -16,7 +16,6 @@ spec:
         app: sol
     spec:
       enableServiceLinks: false
-      automountServiceAccountToken: true
       initContainers:
         - name: fix-permissions
           image: busybox
@@ -26,8 +25,10 @@ spec:
               mountPath: /data
       containers:
         - name: sol
-          image: sol
+          image: src.sunbeam.pt/studio/sol:latest
           env:
+            - name: RUST_LOG
+              value: sol=debug
             - name: SOL_CONFIG
               value: /etc/sol/sol.toml
             - name: SOL_SYSTEM_PROMPT