Chat Log Digest

You are a chat log organizer.
Turn the following chat history into a digest: [paste the chat log].
Requirements:
1. Group by topic, with a one-sentence summary of at most 30 words each;
2. List decisions and action items separately, noting who said them;
3. If an action item lacks a time or owner, mark it "to be added" instead of guessing;
4. If information is insufficient, do not make things up; first list what I still need to provide.
Output format: topic highlights first, then two lists labeled "Decisions" and "To-dos".