Fix Python 3.13: upgrade to Gradio 5, use gr.Tab instead of gr.TabItem

app.py

@@ -759,7 +759,7 @@ with gr.Blocks(title="VORTEXRAG — 7-Layer Causal RAG") as demo:
 
     with gr.Tabs():
         # ── Tab 1: Pipeline Demo ───────────────────────────────────────────────
-        with gr.TabItem("Pipeline Demo"):
+        with gr.Tab("Pipeline Demo"):
             with gr.Row():
                 with gr.Column(scale=1):
                     example_dd = gr.Dropdown(
@@ -800,11 +800,11 @@ with gr.Blocks(title="VORTEXRAG — 7-Layer Causal RAG") as demo:
             )
 
         # ── Tab 2: Architecture ────────────────────────────────────────────────
-        with gr.TabItem("Architecture"):
+        with gr.Tab("Architecture"):
             gr.Markdown(HOW_IT_WORKS)
 
         # ── Tab 3: Benchmarks ─────────────────────────────────────────────────
-        with gr.TabItem("Benchmarks"):
+        with gr.Tab("Benchmarks"):
             gr.Markdown("### Main Results — NQ + HotpotQA + MuSiQue + 2WikiMultiHopQA")
             gr.DataFrame(value=make_benchmark_df(), label="System Comparison", interactive=False)
 
@@ -815,7 +815,7 @@ with gr.Blocks(title="VORTEXRAG — 7-Layer Causal RAG") as demo:
             gr.DataFrame(value=make_latency_df(), label="Latency", interactive=False)
 
         # ── Tab 4: Domain Presets ─────────────────────────────────────────────
-        with gr.TabItem("Domain Presets"):
+        with gr.Tab("Domain Presets"):
             gr.Markdown("### 11 Domain Preset Parameter Vectors")
             gr.Markdown(
                 "Each domain preset is a 7-tuple (α, β, γ, τ, θ_CPG, δ_SDC, δ_FV) calibrated "
@@ -825,11 +825,11 @@ with gr.Blocks(title="VORTEXRAG — 7-Layer Causal RAG") as demo:
             gr.DataFrame(value=make_domain_df(), label="Domain Parameters", interactive=False)
 
         # ── Tab 5: Case Studies ───────────────────────────────────────────────
-        with gr.TabItem("Case Studies"):
+        with gr.Tab("Case Studies"):
             gr.Markdown(CASE_STUDIES)
 
         # ── Tab 6: Citation ───────────────────────────────────────────────────
-        with gr.TabItem("Citation"):
+        with gr.Tab("Citation"):
             gr.Markdown(CITATION_TEXT)