Add project page and code links under the title

A line of plain text links below the TTB-DVSM title: Project Page / Code,
opening in a new tab (the Space runs in an iframe). The arXiv link is
prepared but left out until ARXIV_URL is filled in.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>

app.py

@@ -625,8 +625,38 @@ input[type='range']::-moz-range-thumb     { background: #76B900 !important; }
    leftover space, leaving the left column looking fixed). */
 .col-left  { flex: 1 1 0 !important; min-width: 260px; }
 .col-right { flex: 3 1 0 !important; min-width: 360px; }
+/* Header text links under the title (see _header_links): a quiet grey line,
+   brighter and underlined on hover. Overrides what Gradio gives every <a> in an
+   HTML block (button-like padding, centred text, its own link colour). The
+   light theme gets darker greys so the line stays readable on white. */
+.ttb-links { display: flex; flex-wrap: wrap; gap: 0 0.6em; font-size: 1em; line-height: 1.6; margin-top: 0.15em; }
+.ttb-links a {
+    padding: 0 !important; text-align: left !important; font-weight: 400;
+    color: var(--neutral-500) !important; text-decoration: none !important;
+}
+.dark .ttb-links a { color: var(--body-text-color-subdued) !important; }
+.ttb-links a:hover { color: var(--body-text-color) !important; text-decoration: underline !important; }
+.dark .ttb-links a:hover { color: var(--body-text-color) !important; }
+.ttb-links span { color: var(--neutral-300) !important; }
+.dark .ttb-links span { color: var(--border-color-primary) !important; }
 """
 
+# Paper / project page / code links shown as a line of text links under the
+# title. A link with an empty URL is left out (the arXiv link, until the paper
+# has its arXiv page).
+ARXIV_URL = ""
+PROJECT_URL = "https://test-time-baking.github.io/"
+CODE_URL = "https://github.com/NVlabs/DVSM"
+
+
+def _header_links() -> str:
+    links = [("arXiv", ARXIV_URL), ("Project Page", PROJECT_URL), ("Code", CODE_URL)]
+    # target=_blank: the Space runs in an iframe on huggingface.co.
+    return "<div class='ttb-links'>" + "<span>/</span>".join(
+        f"<a href='{url}' target='_blank' rel='noopener noreferrer'>{label}</a>"
+        for label, url in links if url) + "</div>"
+
+
 # Slider coupling (frames, width) -> the largest value of the OTHER slider that
 # still fits frames * width^2 <= _SLIDER_BUDGET, never raising it.
 _FIT_WIDTH_JS = f"""(n, w) => {{
@@ -653,6 +683,7 @@ with gr.Blocks(title="TTB-DVSM (ZeroGPU)", delete_cache=(3600, 3600)) as demo:
     # Full-width description on top.
     gr.HTML(
         "<h1 style='margin-bottom:0.1em;color:#76B900'>TTB-DVSM</h1>"
+        + _header_links() +
         "<p style='color:var(--body-text-color);font-size:1.1em;margin-top:0.5em;line-height:1.6'>"
         "TTB bakes the scene into fast weights in a single forward pass, "
         "and the result is browseable in the viser viewer."