There will be no directory structure, no folder structure, no hierarchy, No breadcrumbs

All Pages will be scoped to either a User or a Group in a flat, sortable list. sublists can be created with Page list

thus there will be no sidebar or tree view, like in Notion

structure will emerge from the actual writings, where Internal links (pretty) are sprinkled throughout the Body content of Pages

this means / will be valid characters in titles. this is not the case in Obsidian because it’s just a markdown file viewer

Directory structure can lead to duplicates. Detect duplicates