Remove full graph node cap

search_app.py

@@ -745,7 +745,7 @@ def create_app(config: AppConfig = CONFIG) -> Flask:
         }
 
     def build_full_graph_payload(
-        max_nodes: int, *, highlight_id: Optional[str] = None
+        max_nodes: Optional[int], *, highlight_id: Optional[str] = None
     ) -> Dict[str, Any]:
         """
         Attempt to render the entire reference graph by gathering every video that
@@ -776,7 +776,8 @@ def create_app(config: AppConfig = CONFIG) -> Flask:
         nodes: Dict[str, Dict[str, Any]] = {}
         links: List[Dict[str, Any]] = []
         link_seen: Set[Tuple[str, str, str]] = set()
-        batch_size = min(500, max(50, max_nodes * 2))
+        node_limit = max_nodes if max_nodes and max_nodes > 0 else None
+        batch_size = 500 if node_limit is None else min(500, max(50, node_limit * 2))
         truncated = False
 
         def ensure_node(node_id: Optional[str], doc: Optional[Dict[str, Any]] = None) -> bool:
@@ -799,7 +800,7 @@ def create_app(config: AppConfig = CONFIG) -> Flask:
                     if not existing.get("date") and doc.get("date"):
                         existing["date"] = doc.get("date")
                 return True
-            if len(nodes) >= max_nodes:
+            if node_limit is not None and len(nodes) >= node_limit:
                 return False
             channel_name = None
             channel_id = None
@@ -836,7 +837,7 @@ def create_app(config: AppConfig = CONFIG) -> Flask:
                 if not hits:
                     break
                 for hit in hits:
-                    if len(nodes) >= max_nodes:
+                    if node_limit is not None and len(nodes) >= node_limit:
                         truncated = True
                         stop_fetch = True
                         break
@@ -996,14 +997,17 @@ def create_app(config: AppConfig = CONFIG) -> Flask:
             depth = 1
         depth = max(0, min(depth, 3))
 
-        try:
-            max_nodes = int(request.args.get("max_nodes", "200"))
-        except ValueError:
-            max_nodes = 200
-        max_nodes = max(10, min(max_nodes, 800 if full_graph else 400))
+        if full_graph:
+            max_nodes = None
+        else:
+            try:
+                max_nodes = int(request.args.get("max_nodes", "200"))
+            except ValueError:
+                max_nodes = 200
+            max_nodes = max(10, min(max_nodes, 400))
 
         if full_graph:
-            payload = build_full_graph_payload(max_nodes, highlight_id=video_id or None)
+            payload = build_full_graph_payload(None, highlight_id=video_id or None)
         else:
             payload = build_graph_payload(video_id, depth, max_nodes)
             if not payload["nodes"]:
@@ -1011,7 +1015,9 @@ def create_app(config: AppConfig = CONFIG) -> Flask:
                     jsonify({"error": f"Video '{video_id}' was not found in the index."}),
                     404,
                 )
-        payload["meta"]["max_nodes"] = max_nodes
+        payload["meta"]["max_nodes"] = (
+            len(payload["nodes"]) if full_graph else max_nodes
+        )
         return jsonify(payload)
 
     @app.route("/api/years")