feat: add OpenClaw adapter type

Introduce openclaw adapter package with server execution, CLI stream
formatting, and UI config fields. Register the adapter across CLI,
server, and UI registries. Add adapter label in all relevant pages.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ui/src/components/AgentProperties.tsx

@@ -17,6 +17,7 @@ interface AgentPropertiesProps {
 const adapterLabels: Record<string, string> = {
   claude_local: "Claude (local)",
   codex_local: "Codex (local)",
+  openclaw: "OpenClaw",
   process: "Process",
   http: "HTTP",
 };
@@ -72,7 +73,7 @@ export function AgentProperties({ agent, runtimeState }: AgentPropertiesProps) {
         )}
         {runtimeState?.lastError && (
           <PropertyRow label="Last error">
-            <span className="text-xs text-red-400 truncate max-w-[160px]">{runtimeState.lastError}</span>
+            <span className="text-xs text-red-600 dark:text-red-400 truncate max-w-[160px]">{runtimeState.lastError}</span>
           </PropertyRow>
         )}
         {agent.lastHeartbeatAt && (