auth is now optional, but required for Image/Video gen. those tools are hidden otherwise

app.py

@@ -628,18 +628,34 @@ code_interface = gr.Interface(
 CSS_STYLES = """
     .gradio-container h1 {
         text-align: center;
+        /* Ensure main title appears first, then our two subtitle lines */
+        display: grid;
+        justify-items: center;
     }
-    /* Default: add subtitle under titles */
-    .gradio-container h1::after {
-    content: "Fetch Webpage | Search DuckDuckGo | Code Interpreter | Kokoro TTS | Image Generation | Video Generation";
+    /* Place bold tools list on line 2, normal auth note on line 3 (below title) */
+    .gradio-container h1::before {
+        grid-row: 2;
+        content: "Fetch Webpage | Search DuckDuckGo | Code Interpreter | Kokoro TTS | Image Generation | Video Generation";
         display: block;
         font-size: 1rem;
-        font-weight: 500;
+        font-weight: 700;
         opacity: 0.9;
         margin-top: 6px;
+        white-space: pre-wrap;
+    }
+    .gradio-container h1::after {
+        grid-row: 3;
+        content: "Authentication is optional but Image/Video Generation require a `HF_READ_TOKEN` in env variables. They are hidden otherwise.";
+        display: block;
+        font-size: 1rem;
+        font-weight: 400;
+        opacity: 0.9;
+        margin-top: 2px;
+        white-space: pre-wrap;
     }
 
-    /* But remove it inside tab panels so it doesn't duplicate under each tool title */
+    /* Remove inside tab panels so it doesn't duplicate under each tool title */
+    .gradio-container [role=\"tabpanel\"] h1::before,
     .gradio-container [role=\"tabpanel\"] h1::after {
         content: none !important;
     }
@@ -969,24 +985,29 @@ video_generation_interface = gr.Interface(
     allow_flagging="never",
 )
 
-# Build tabbed app including Image Generation
+# Build tabbed app; disable Image/Video tools if no HF token is present
+HAS_HF_TOKEN = bool(HF_API_TOKEN or HF_VIDEO_TOKEN)
+
+_interfaces = [
+    fetch_interface,
+    concise_interface,
+    code_interface,
+    kokoro_interface,
+]
+_tab_names = [
+    "Fetch Webpage",
+    "DuckDuckGo Search",
+    "Python Code Executor",
+    "Kokoro TTS",
+]
+
+if HAS_HF_TOKEN:
+    _interfaces.extend([image_generation_interface, video_generation_interface])
+    _tab_names.extend(["Image Generation", "Video Generation"])
+
 demo = gr.TabbedInterface(
-    interface_list=[
-        fetch_interface,
-        concise_interface,
-        code_interface,
-        kokoro_interface,
-        image_generation_interface,
-        video_generation_interface,
-    ],
-    tab_names=[
-        "Fetch Webpage",
-        "DuckDuckGo Search",
-        "Python Code Executor",
-        "Kokoro TTS",
-        "Image Generation",
-        "Video Generation",
-    ],
+    interface_list=_interfaces,
+    tab_names=_tab_names,
     title="Tools MCP",
     theme="Nymbo/Nymbo_Theme",
     css=CSS_STYLES,