Merging the Sources Into One Digest

After Part 6 the workflow produces three JSON files, one per source, each a list of classified items. That is not a briefing. The same newsletter can arrive in two accounts, the payments are scattered across the files, the meetings are not in order, and there is no narrative tying anything together. I want one digest.json that is the whole picture, and a short inbox-digest.md for the terminal. The…