Notion API: Handle nested paragraphs

[danielgavrilov]

Nested paragraphs were silently discarded on import. A paragraph indented under another paragraph in Notion (Tab in the editor — the child arrives in the API as a block in the parent's .children with has_children: true) would simply vanish from the output.

Fix

convertParagraph now recursively converts its children and emits them below the parent, prefixing each nested level with 4 spaces per depth so the hierarchy is preserved in the Markdown.

Example

Before: only "A paragraph with children" made it into the note — both nested paragraphs were dropped.

After: All paragraphs included.

[danielgavrilov]

One thing I'm not sure about: Markdown doesn't really support nesting paragraphs.

In Obsidian's Edit mode, the paragraphs appear indented, but not Reading mode (leading whitespace is ignored).