Add model override support to control session API

The /api/control/message endpoint now accepts an optional `model` field
to specify which model to use for a particular message. This enables:
- Model comparison tests from the dashboard
- Per-message model selection in the control session

The model override is passed through to the task's requested_model field,
which the ModelSelector respects when choosing the execution model.

scripts/check_all_tasks.py

@@ -0,0 +1,121 @@
+#!/usr/bin/env python3
+"""Check all security analysis task results."""
+
+import json
+import requests
+import os
+
+API_URL = "https://agent-backend.thomas.md"
+
+# All security analysis task IDs (latest run after service restart)
+TASKS = {
+    "moonshotai/kimi-k2-thinking": "ec103234-9fe5-4814-ab24-58dd7856dd43",
+    "x-ai/grok-4.1-fast": "97e654e1-a381-49da-911b-1b835449bb55",
+    "google/gemini-3-flash-preview": "989ecdb8-b900-44d8-a9e5-a9e9394a9077",
+    "deepseek/deepseek-v3.2": "7a589315-9b9b-4805-9e14-da01224717e1",
+    "qwen/qwen3-vl-235b-a22b-thinking": "d19711d5-3158-48cd-aa88-81bb4d22262c",
+    "mistralai/mistral-large-2512": "e0c3b62e-7b64-425f-8289-0a1b274e5dd4",
+    "amazon/nova-pro-v1": "3fe39368-a7fe-4852-961f-44863128b426",
+    "z-ai/glm-4.6v": "eb161e08-c923-44b5-8c8d-6f0d01366082",
+    "anthropic/claude-sonnet-4.5": "8943e1ef-2c95-4485-bcee-8d3bc611fa6d",
+}
+
+
+def get_token():
+    """Get auth token."""
+    secrets_path = os.path.join(os.path.dirname(__file__), "..", "secrets.json")
+    password = ""
+    if os.path.exists(secrets_path):
+        with open(secrets_path) as f:
+            secrets = json.load(f)
+            password = secrets.get("auth", {}).get("dashboard_password", "")
+    if not password:
+        password = os.environ.get("DASHBOARD_PASSWORD", "")
+    
+    if not password:
+        print("Error: No dashboard password found")
+        return None
+    
+    resp = requests.post(f"{API_URL}/api/auth/login", json={"password": password})
+    return resp.json().get("token")
+
+
+def check_task(token, model, task_id):
+    """Check a task's status."""
+    headers = {"Authorization": f"Bearer {token}"}
+    try:
+        resp = requests.get(f"{API_URL}/api/task/{task_id}", headers=headers)
+        data = resp.json()
+        return {
+            "model": model,
+            "task_id": task_id,
+            "status": data.get("status", "unknown"),
+            "iterations": data.get("iterations", 0),
+            "result_length": len(data.get("result") or ""),
+            "result_preview": (data.get("result") or "")[:200],
+            "error": "Error:" in (data.get("result") or ""),
+        }
+    except Exception as e:
+        return {
+            "model": model,
+            "task_id": task_id,
+            "status": "error",
+            "iterations": 0,
+            "result_length": 0,
+            "result_preview": str(e),
+            "error": True,
+        }
+
+
+def main():
+    token = get_token()
+    if not token:
+        return
+    
+    print("=" * 80)
+    print("Security Analysis Task Status")
+    print("=" * 80)
+    print()
+    
+    results = []
+    for model, task_id in TASKS.items():
+        result = check_task(token, model, task_id)
+        results.append(result)
+    
+    # Print summary table
+    print(f"{'Model':<40} | {'Status':<10} | {'Iters':<5} | {'Chars':<8}")
+    print("-" * 40 + "-+-" + "-" * 10 + "-+-" + "-" * 5 + "-+-" + "-" * 8)
+    
+    for r in results:
+        print(f"{r['model']:<40} | {r['status']:<10} | {r['iterations']:<5} | {r['result_length']:<8}")
+    
+    # Categorize
+    completed = [r for r in results if r["status"] == "completed" and not r["error"]]
+    failed = [r for r in results if r["status"] == "failed" or r["error"]]
+    running = [r for r in results if r["status"] in ("pending", "running")]
+    
+    print()
+    print("=" * 80)
+    print(f"Summary: {len(completed)} completed, {len(running)} running, {len(failed)} failed")
+    print("=" * 80)
+    
+    if completed:
+        print(f"\n✓ Completed ({len(completed)}):")
+        for r in completed:
+            preview = r['result_preview'].replace('\n', ' ')[:100]
+            print(f"  - {r['model']}: {preview}...")
+    
+    if running:
+        print(f"\n⏳ Running ({len(running)}):")
+        for r in running:
+            print(f"  - {r['model']}")
+    
+    if failed:
+        print(f"\n❌ Failed ({len(failed)}):")
+        for r in failed:
+            preview = r['result_preview'].replace('\n', ' ')[:100]
+            print(f"  - {r['model']}: {preview}...")
+
+
+if __name__ == "__main__":
+    main()