Add custom nodes, Civitai loras (LFS), and vast.ai setup script

Includes 30 custom nodes committed directly, 7 Civitai-exclusive
loras stored via Git LFS, and a setup script that installs all
dependencies and downloads HuggingFace-hosted models on vast.ai.

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

custom_nodes/comfyui-custom-scripts/py/autocomplete.py

@@ -0,0 +1,29 @@
+from server import PromptServer
+from aiohttp import web
+import os
+import folder_paths
+
+dir = os.path.abspath(os.path.join(__file__, "../../user"))
+if not os.path.exists(dir):
+    os.mkdir(dir)
+file = os.path.join(dir, "autocomplete.txt")
+
+
+@PromptServer.instance.routes.get("/pysssss/autocomplete")
+async def get_autocomplete(request):
+    if os.path.isfile(file):
+        return web.FileResponse(file)
+    return web.Response(status=404)
+
+
+@PromptServer.instance.routes.post("/pysssss/autocomplete")
+async def update_autocomplete(request):
+    with open(file, "w", encoding="utf-8") as f:
+        f.write(await request.text())
+    return web.Response(status=200)
+
+
+@PromptServer.instance.routes.get("/pysssss/loras")
+async def get_loras(request):
+    loras = folder_paths.get_filename_list("loras")
+    return web.json_response(list(map(lambda a: os.path.splitext(a)[0], loras)))