fix: Runtime tab respects selected environment

- Add environment parameter to AgentEventsController, AgentEventService,
  and ClickHouseAgentEventRepository (filters agent_events by environment)
- Wire selectedEnv to useAgents and useAgentEvents in both AgentHealth
  and AgentInstance pages
- Wire selectedEnv to useStatsTimeseries in AgentInstance

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/pages/AgentInstance/AgentInstance.tsx

@@ -15,6 +15,7 @@ import { useApplicationLogs } from '../../api/queries/logs';
 import { useStatsTimeseries } from '../../api/queries/executions';
 import { useAgentMetrics } from '../../api/queries/agent-metrics';
 import { formatUptime, mapLogLevel, eventSeverity, eventIcon } from '../../utils/agent-utils';
+import { useEnvironmentStore } from '../../api/environment-store';
 
 const LOG_LEVEL_ITEMS: ButtonGroupItem[] = [
   { value: 'error', label: 'Error', color: 'var(--error)' },
@@ -36,9 +37,10 @@ export default function AgentInstance() {
   const timeFrom = timeRange.start.toISOString();
   const timeTo = timeRange.end.toISOString();
 
-  const { data: agents, isLoading } = useAgents(undefined, appId);
-  const { data: events } = useAgentEvents(appId, instanceId, 50, eventRefreshTo);
-  const { data: timeseries } = useStatsTimeseries(timeFrom, timeTo, undefined, appId);
+  const selectedEnv = useEnvironmentStore((s) => s.environment);
+  const { data: agents, isLoading } = useAgents(undefined, appId, selectedEnv);
+  const { data: events } = useAgentEvents(appId, instanceId, 50, eventRefreshTo, selectedEnv);
+  const { data: timeseries } = useStatsTimeseries(timeFrom, timeTo, undefined, appId, selectedEnv);
 
   const agent = useMemo(
     () => (agents || []).find((a: any) => a.instanceId === instanceId) as any,