Setup
desktop source needs no Slack token. For deeper history, add a bot/user token to ~/.slacrawl/config.toml and use -source api or -source all.
What lands in the lake
Messages joined with channels and users, so every row is titled#channel Author Name. Workspace names become source_account (filter with --source slack:autono). Edited messages append as new rows (content-hash); deleted messages are excluded. Everything ingests as classification: confidential.