Update app.py

app.py

@@ -171,13 +171,6 @@ def render_color_legend(freq_pred):
 
 # ── PyVis renderer (inline assets, optional labels) ─────────────────────────────
 def edges_to_pyvis_with_freq(edges, label_mode: str):
-    """
-    Render PyVis graph with:
-      - visible edge labels (predicate) OR tooltip-only
-      - edge width scaled by exact triple frequency
-      - edge color based on predicate frequency
-      - inline assets (no filesystem writes)
-    """
     triples = edges_to_rdf(edges)
     freq_triplet, freq_pred = count_relation_frequency(triples)
 
@@ -188,19 +181,11 @@ def edges_to_pyvis_with_freq(edges, label_mode: str):
         font_color="#222222",
         notebook=False,
         directed=False,
-        cdn_resources="in_line",   # avoid writing ./lib
+        cdn_resources="in_line",
     )
 
-    net.set_options("""
-    const options = {
-      edges: {
-        font: { size: 12, align: "middle" },
-        smooth: { type: "dynamic" },
-        scaling: { min: 1, max: 10 }
-      },
-      physics: { stabilization: true }
-    }
-    """)
+    # ✅ valid JSON (not JS)
+    net.set_options(json.dumps(PYVIS_OPTIONS))
 
     seen = set()
     for t in triples:
@@ -216,17 +201,18 @@ def edges_to_pyvis_with_freq(edges, label_mode: str):
 
         width_val = int(max(1, freq_triplet[(s, p, o)]))
         edge_kwargs = {
-            "title": p,                        # tooltip always available
-            "value": width_val,                # width scales with frequency
+            "title": p,
+            "value": width_val,
             "color": color_for_predicate(p, freq_pred),
         }
         if label_mode == "Always visible":
-            edge_kwargs["label"] = p          # visible text on the edge
+            edge_kwargs["label"] = p
         net.add_edge(n1, n2, **edge_kwargs)
 
     net.toggle_physics(True)
     return net, triples, freq_triplet, freq_pred
 
+
 # ── Cytoscape.js renderer (embedded HTML; no new Python deps) ───────────────────
 def cytoscape_html(triples, freq_triplet, freq_pred, label_mode: str):
     """