Add the category tag to the goals and example env file, and filter the results based on tags in list_agents

tools/list_agents.py

@@ -1,16 +1,32 @@
+import os
 import tools.goal_registry as goals
 
 def list_agents(args: dict) -> dict:
 
+    goal_categories_start = os.getenv("GOAL_CATEGORIES")
+    if goal_categories_start is None:
+        goal_categories = ["all"] # default to 'all' categories
+    else:
+        goal_categories_start.strip().lower() # handle extra spaces or non-lowercase
+        goal_categories = goal_categories_start.split(",")
+
+    # always show goals labeled as "system," like the goal chooser
+    if "system" not in goal_categories:
+        goal_categories.append("system")
+
     agents = []
     if goals.goal_list is not None:
         for goal in goals.goal_list:
-            agents.append(
-                {
-                    "agent_name": goal.agent_name,
-                    "goal_id": goal.id,
-                    "agent_description": goal.agent_friendly_description,
-                }
+            # add to list if either
+            #   - all
+            #   - current goal's tag is in goal_categories
+            if "all" in goal_categories or goal.category_tag in goal_categories:
+                agents.append(
+                    {
+                        "agent_name": goal.agent_name,
+                        "goal_id": goal.id,
+                        "agent_description": goal.agent_friendly_description,
+                    }
             )
     return {
         "agents": agents,