Add chat_logs.txt viewer to Space UI

- Added Chat Logs accordion section with viewer and download
- Shows content of chat_logs.txt file if exists
- Download button for chat_logs.txt
- Separate from JSON conversation tracking system

Now both logging systems are accessible:
- chat_logs.txt: Simple text logging
- conversations.json: Structured JSON with dashboard

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

app.py

@@ -1135,6 +1135,44 @@ with gr.Blocks(css=custom_css, theme="soft", title="Trek Asistanı", head=storag
     
     msg.submit(respond, [msg, chatbot], [msg, chatbot], show_progress=True)
     
+    # Add chat logs viewer
+    with gr.Accordion("📄 Chat Logs (Text)", open=False):
+        with gr.Row():
+            refresh_logs_btn = gr.Button("🔄 Yenile", scale=1)
+            download_logs_btn = gr.Button("💾 Logları İndir", scale=1)
+        
+        logs_display = gr.Textbox(
+            label="Chat Logs",
+            lines=10,
+            max_lines=20,
+            interactive=False
+        )
+        
+        logs_file = gr.File(visible=False)
+        
+        def get_chat_logs():
+            """Get chat logs content"""
+            try:
+                if os.path.exists(LOG_FILE):
+                    with open(LOG_FILE, 'r', encoding='utf-8') as f:
+                        return f.read()
+                return "Henüz log kaydı yok."
+            except Exception as e:
+                return f"Log okuma hatası: {e}"
+        
+        def download_chat_logs():
+            """Download chat logs file"""
+            if os.path.exists(LOG_FILE):
+                return LOG_FILE
+            # Create empty file if doesn't exist
+            with open(LOG_FILE, 'w') as f:
+                f.write("Chat Logs\n")
+            return LOG_FILE
+        
+        refresh_logs_btn.click(get_chat_logs, outputs=logs_display)
+        download_logs_btn.click(download_chat_logs, outputs=logs_file)
+        demo.load(get_chat_logs, outputs=logs_display)
+    
     # Add conversation viewer
     with gr.Accordion("📊 Konuşma Geçmişi (JSON)", open=False):
         with gr.Row():