New Feature: トレーニングステップやワークフロー図にする

追跡可能なソリューションをグラフにできないか？

train_network.py オプション

merge_lora.py オプション

train_network.py オプション -> merge_lora.py オプション -> train_network.py オプション

Start by reviewing the option interfaces for train_network.py and merge_lora.py. Determine how a traceable solution should represent the sequence from train_network.py to merge_lora.py and back to train_network.py. Done means the requested training steps and workflow can be represented as a graph with the relevant options visible.

Written by the indexing model from the issue text.