Release v0.2.15 — Drag, drop, and paste images straight into your notes

Features

Drop image files from your file manager onto the editor and they get inserted at the spot you dropped them, copied next to the document into an images/ folder (closes #81).
Paste images directly from the clipboard (Ctrl+V) — works for screenshots and "Copy image" from a browser; image is saved next to the document.
Drag an image from the workspace sidebar into the editor to insert it instead of opening it as a tab.
Workspace sidebar now lists images alongside Markdown files so you can see what got dropped in.
New right-click options in the workspace sidebar: create a folder and copy a file's full path.

Top-level workspace folders can now actually be collapsed; the arrow was previously ignored.
The right-click menu on workspace files no longer hides behind the browser's built-in image menu — you can reach Delete, Rename, etc. again.

Hover over an image in the editor to get a small delete button in the corner.
Mermaid diagrams stay readable in dark mode — boxes are dark and labels stay bright, even when the diagram source uses light colors.
Tooltips on toolbar and sidebar buttons now appear after ~150ms instead of the browser's slow ~600ms default.