fix: dashboard landing page loading default session instead of showing picker

New nodes now show the session landing page instead of auto-loading
"my_session". Uses _configured_from_workflow flag to distinguish fresh
nodes from saved workflows. Also fixes session cards Y-axis overflow.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: JasonHoku

__init__.py

@@ -401,7 +401,10 @@ async def get_session_html(request):
             session_name = re.sub(r'[^\w\-]', '', session_name)
 
         if not session_name:
-            return web.Response(status=400, text="Missing session_name")
+            # No session name — return landing page with empty manifest
+            empty_manifest = {"items": [], "meta": {"model": "", "positive": "", "negative": ""}, "session_name": ""}
+            html = get_html_template("", empty_manifest, node_id)
+            return web.Response(status=200, text=html)
 
         base_dir = os.path.join(folder_paths.get_output_directory(), "benchmarks", session_name)
 

web/dashboard.js

@@ -391,16 +391,31 @@ app.registerExtension({
                 // Set default size
                 this.setSize([900, 750]);
 
-                // Auto-load session on node creation so the dashboard
-                // shows content immediately (landing page or session grid)
-                // instead of a blank black box
-                const autoLoadSession = getSessionName();
-                if (autoLoadSession) {
-                    // Small delay to let ComfyUI finish initializing the node
-                    setTimeout(() => {
-                        this.forceLoadSession(autoLoadSession);
-                    }, 500);
-                }
+                // Auto-load: show landing page for new nodes, or saved session
+                // for workflows loaded from disk. onConfigure fires synchronously
+                // before the setTimeout, so we can use a flag to distinguish.
+                node._configured_from_workflow = false;
+                setTimeout(() => {
+                    if (node._configured_from_workflow) {
+                        // Workflow loaded — show the saved session
+                        const savedSession = getSessionName();
+                        if (savedSession) {
+                            this.forceLoadSession(savedSession);
+                        } else {
+                            this.forceLoadSession("");
+                        }
+                    } else {
+                        // Fresh node — show landing page with session cards
+                        this.forceLoadSession("");
+                    }
+                }, 500);
+
+                // onConfigure fires when loading a saved workflow (before setTimeout)
+                const origOnConfigure = this.onConfigure;
+                this.onConfigure = function (config) {
+                    if (origOnConfigure) origOnConfigure.apply(this, arguments);
+                    node._configured_from_workflow = true;
+                };
 
                 // Cleanup on node removal
                 const originalOnRemoved = this.onRemoved;