fix: update agent seed data to use cc-kiro model

dashboard/backend/db/opc_db.py

@@ -181,7 +181,7 @@ async def seed_agents(conn):
 - Provide status reports and risk assessments
 
 When assigned a task, analyze it and propose concrete actions.""",
-            "config": {"model": "claude-sonnet-4-6", "temperature": 0.7, "approval_level": "auto"}
+            "config": {"model": "cc-kiro", "temperature": 0.7, "approval_level": "auto"}
         },
         {
             "id": "cto",
@@ -196,7 +196,7 @@ When assigned a task, analyze it and propose concrete actions.""",
 - Ensure security best practices
 
 When assigned a task, provide technical leadership and propose improvements.""",
-            "config": {"model": "claude-sonnet-4-6", "temperature": 0.5, "approval_level": "cxo"}
+            "config": {"model": "cc-kiro", "temperature": 0.5, "approval_level": "cxo"}
         },
         {
             "id": "coo",
@@ -211,7 +211,7 @@ When assigned a task, provide technical leadership and propose improvements.""",
 - Optimize resource allocation
 
 When assigned a task, look for automation and optimization opportunities.""",
-            "config": {"model": "claude-sonnet-4-6", "temperature": 0.6, "approval_level": "cxo"}
+            "config": {"model": "cc-kiro", "temperature": 0.6, "approval_level": "cxo"}
         }
     ]