fix(custom-node-list): §4.2 MERGE_RELOCATE #3034 Stillfront/comfyui-sf-nodes — root relocate + node_db/new sync

- Root: relocated from mid-file (idx 354) to after last git-clone (idx 5180, new author)
- node_db/new: prepended (top, chronological newest-first)
- Verify SAFE per verification_results.json:safe_repos (deep verify manual-confirmed all static flags as false positives)

node_db/new/custom-node-list.json

@@ -1,5 +1,15 @@
 {
     "custom_nodes": [
+        {
+            "author": "Stillfront",
+            "title": "SF ComfyUI Nodes",
+            "reference": "https://github.com/Stillfront/comfyui-sf-nodes",
+            "files": [
+                "https://github.com/Stillfront/comfyui-sf-nodes"
+            ],
+            "install_type": "git-clone",
+            "description": "Custom nodes for ComfyUI including LLM Chat (Claude, Gemini, GPT), WaveSpeed AI image and video generation, VertexAI integration, and workflow utilities."
+        },
         {
             "author": "maikios",
             "title": "ComfyUI Gemma4 Reference Prompt",