fix(AgentController): case-insensitive agentId filtering and null-guard for GetRuleTriggers

src/Infrastructure/BotSharp.Abstraction/Rules/IRuleTrigger.cs

@@ -21,4 +21,10 @@ public interface IRuleTrigger
     /// Explain the purpose of rule trigger (display purpose)
     /// </summary>
     string Statement => string.Empty;
+
+    /// <summary>
+    /// Optional list of agent IDs this trigger is associated with.
+    /// Used for display/filtering in UI only (not used in execution logic).
+    /// </summary>
+    string[]? AgentIds => null;
 }

src/Infrastructure/BotSharp.OpenAPI/Controllers/Agent/AgentController.Rule.cs

@@ -5,6 +5,29 @@ namespace BotSharp.OpenAPI.Controllers;
 
 public partial class AgentController
 {
+    [HttpGet("/rule/triggers/{agentId}")]
+    public ActionResult<IEnumerable<AgentRuleViewModel>> GetRuleTriggers(string agentId)
+    {
+        if (string.IsNullOrWhiteSpace(agentId))
+        {
+            return BadRequest("agentId is required");
+        }
+
+        var triggers = _services.GetServices<IRuleTrigger>()
+            .Where(x =>
+            {
+                var agentIds = x.AgentIds;
+                return agentIds == null || agentIds.Contains(agentId, StringComparer.OrdinalIgnoreCase);
+            });
+        return Ok(triggers.Select(x => new AgentRuleViewModel
+        {
+            TriggerName = x.Name,
+            Channel = x.Channel,
+            Statement = x.Statement,
+            OutputArgs = x.OutputArgs
+        }).OrderBy(x => x.TriggerName));
+    }
+
     [HttpGet("/rule/triggers")]
     public IEnumerable<AgentRuleViewModel> GetRuleTriggers()
     {