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>

cameleer3-server-app/src/main/java/com/cameleer3/server/app/controller/AgentEventsController.java

@@ -32,6 +32,7 @@ public class AgentEventsController {
     public ResponseEntity<List<AgentEventResponse>> getEvents(
             @RequestParam(required = false) String appId,
             @RequestParam(required = false) String agentId,
+            @RequestParam(required = false) String environment,
             @RequestParam(required = false) String from,
             @RequestParam(required = false) String to,
             @RequestParam(defaultValue = "50") int limit) {
@@ -39,7 +40,7 @@ public class AgentEventsController {
         Instant fromInstant = from != null ? Instant.parse(from) : null;
         Instant toInstant = to != null ? Instant.parse(to) : null;
 
-        var events = agentEventService.queryEvents(appId, agentId, fromInstant, toInstant, limit)
+        var events = agentEventService.queryEvents(appId, agentId, environment, fromInstant, toInstant, limit)
                 .stream()
                 .map(AgentEventResponse::from)
                 .toList();

cameleer3-server-app/src/main/java/com/cameleer3/server/app/storage/ClickHouseAgentEventRepository.java

@@ -38,6 +38,11 @@ public class ClickHouseAgentEventRepository implements AgentEventRepository {
 
     @Override
     public List<AgentEventRecord> query(String applicationId, String instanceId, Instant from, Instant to, int limit) {
+        return query(applicationId, instanceId, null, from, to, limit);
+    }
+
+    @Override
+    public List<AgentEventRecord> query(String applicationId, String instanceId, String environment, Instant from, Instant to, int limit) {
         var sql = new StringBuilder(SELECT_BASE);
         var params = new ArrayList<Object>();
         params.add(tenantId);
@@ -50,6 +55,10 @@ public class ClickHouseAgentEventRepository implements AgentEventRepository {
             sql.append(" AND instance_id = ?");
             params.add(instanceId);
         }
+        if (environment != null) {
+            sql.append(" AND environment = ?");
+            params.add(environment);
+        }
         if (from != null) {
             sql.append(" AND timestamp >= ?");
             params.add(Timestamp.from(from));