fix preview to match space_template: add dynamic url extraction and api headers

app.py

@@ -567,6 +567,20 @@ class SpaceGenerator:
                                         except:
                                             pass
                             
+                            # Check for dynamic URLs in message if enabled
+                            if config.get('enable_dynamic_urls', True):
+                                urls_in_message = extract_urls_from_text(message)
+                                if urls_in_message:
+                                    dynamic_context = "\n📎 **Dynamic Context:**\n"
+                                    for url in urls_in_message[:3]:  # Limit to 3 URLs
+                                        try:
+                                            content = fetch_url_content(url, max_chars=2500)
+                                            if not content.startswith("❌"):
+                                                dynamic_context += f"\n{content}"
+                                        except:
+                                            pass
+                                    grounding_context += dynamic_context
+                            
                             # Build messages for API with grounding context in system prompt
                             system_content = config.get('system_prompt', 'You are a helpful AI assistant.')
                             language = config.get('language', 'English')
@@ -603,6 +617,13 @@ class SpaceGenerator:
                                 "stream": False
                             }
                             
+                            # Add additional headers to match space template
+                            space_id = os.environ.get('SPACE_ID', '')
+                            headers.update({
+                                "HTTP-Referer": f"https://huggingface.co/spaces/{space_id}" if space_id else "https://huggingface.co",
+                                "X-Title": config.get('name', 'AI Assistant')
+                            })
+                            
                             response = requests.post(
                                 "https://openrouter.ai/api/v1/chat/completions",
                                 headers=headers,