I’m a new user of Logseq. I have novice-level experience with Obsidian. Delighted to hear they can be used together, but I have questions. For the moment one in particular: If I go structuring my Obsidian notes as an outline in Logseq with levels of indentation and nesting of notes, what will that do to my Obsidian vault? I have no folders in Obsidian except for journal and new notes.
If you mean the folder structure, you can use whatever you want and Logseq will respect it, but by default it will place new pages in /pages or /journal and attachments in /assets.
If you mean indentation of blocks, it uses standard Markdown indented lists so they should be recognized by Obsidian.