feat: load and cache Ollama show data per model with clickable model details

- Add GET /api/v1/models/{model_name}/show endpoint (proxy to Ollama /api/show)
- Worker now fetches show data for each model during model list sync
- Persist show details in localStorage under llm_monitor_models.showByModel
- Make model cards clickable to display cached show details in a dedicated panel
- Keep UI updates incremental without full page reload
- Add tests for show endpoint and OpenAPI path
- Update README and PRD with show-flow and click-card behavior

tests/test_api.py

@@ -78,6 +78,40 @@ def test_get_nonexistent_model(client, mock_models_response):
         response = client.get("/api/v1/models/nonexistent")
         assert response.status_code == 404
 
+
+def test_get_model_show(client):
+    """Test show endpoint for model details."""
+    with patch("requests.post") as mock_post:
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {
+            "details": {
+                "family": "llama",
+                "parameter_size": "8B"
+            },
+            "model_info": {
+                "general.architecture": "llama"
+            }
+        }
+        mock_post.return_value = mock_response
+
+        response = client.get("/api/v1/models/llama2/show")
+        assert response.status_code == 200
+        data = response.json()
+        assert "details" in data
+        assert data["details"]["family"] == "llama"
+
+
+def test_get_model_show_not_found(client):
+    """Test show endpoint when model is not found."""
+    with patch("requests.post") as mock_post:
+        mock_response = MagicMock()
+        mock_response.status_code = 404
+        mock_post.return_value = mock_response
+
+        response = client.get("/api/v1/models/nonexistent/show")
+        assert response.status_code == 404
+
 def test_root_endpoint(client):
     """Test root endpoint redirects to dashboard"""
     response = client.get("/", follow_redirects=False)
@@ -92,6 +126,7 @@ def test_openapi_schema(client):
     assert "paths" in schema
     assert "/api/v1/health" in schema["paths"]
     assert "/api/v1/models" in schema["paths"]
+    assert "/api/v1/models/{model_name}/show" in schema["paths"]
     assert "/api/v1/models/{model_name}/pull" not in schema["paths"]