Quick Look in Finder, smarter AI Chat, and lots of improvements

New

• Quick Look in Finder. Press Space on a Markdown file and Cogito's native preview — local images, math, and styling included — renders right inside Finder.
• AI Chat works without a note open. Open AI Chat from any empty Location screen and pick between Current Note and Location context — transcripts, providers, and permissions stay separate per scope.
• Customize attachment folders. Settings > General now offers Smart and Custom modes for where pasted or dragged media goes.

Editor

• Markdown list shortcuts. Source mode now has ⌥⌘U and ⌥⌘O for unordered and ordered lists.
• More typography control. Editor, Code, and Preview each have their own font settings, with new serif options — Source Serif 4, Literata, IBM Plex Serif.
• "Open With" from the note header. A new button next to Outline opens the current file in any installed editor, Finder, or your terminal of choice.
• Clearer preview/edit toggle. Better glyphs and ordering of the editor header actions.

Preview

• Optional code block line numbers. A new View menu toggle (⌥⌘L) hides line numbers in fenced code blocks while keeping PDF export compact.
• Safe HTML image styling. Preview and export now honor a sanitized subset of HTML image and figure styling — alignment, sizing, captions.
• Broader Markdown parity. Better rendering for tables of contents, table captions, code titles, details/summary blocks, inline tags, emoji aliases, superscript/subscript shorthand, and wiki heading fragments.
• Smoother resize. Width-only resizes reflow the existing preview instead of rebuilding it, and large no-change updates settle almost instantly.

Sidebar

• Re-order Locations. Locations keep the order you arrange them in, with new Move Up/Down actions in the Location menu.
• Drop Finder files into folders. Dropping a Finder file on a sidebar folder or Location header now moves it inside by default. Hold Option to copy, and dropping a folder still adds it as a Location.
• Compact one-line rows. Current-folder files show in one line by default with edited dates still visible; the second preview line is now behind a General > Sidebar setting.

Improved

• Choose visible AI chat providers. Settings > AI now lets you show or hide each provider, with installed status shown inline.
• Better closing behavior and hotkeys. Cmd-W closes the current file (and the window when it's the last one); Cmd-Shift-W closes the window. The File menu now exposes explicit Close File, Close Window, and Close All entries, and a new General setting keeps the window open after closing the last file.
• First-time Related Notes setup completes. First-time qmd model downloads now have up to 10 minutes to finish instead of timing out.
• Steadier typography steppers. Font size and line height arrows update the focused fields, and Up/Down keys step through the same clamped values.
• Multi-line AI Chat input. Press Shift+Enter in the AI Chat input to add a new line without sending.

Fixed

• Favorites survive renames and moves. Renaming or moving a favorited note in Cogito keeps its Favorites row pointed at the right file.
• Tidier code blocks. Copy buttons stay on fenced code blocks (not inline code), code backgrounds inside callouts respect the trailing inset, and wrapped highlights stay aligned with the actual glyph bounds.
• Editor "undo" survives the preview round trip. Toggling between Preview and Source keeps your Cmd-Z history intact instead of dropping it.
• Quick switching preserves your edits. Edits made immediately after switching files or after an external sync refresh no longer get dropped.
• Reliable clipboard pastes. Pastes always reflect the latest copy instead of lagging one behind, while still respecting raw Markdown preference and per-paste undo boundaries.
• No more lingering drop overlays. Sidebar drag-drop highlights and the "drop folders to add Locations" overlay clear properly after internal drags.
• Folder icon picker. No more blank gaps when SF Symbols are missing on the current OS.
• Consistent mode toggle. The View menu mode toggle now matches the editor header icons and labels.
• No duplicate cloud badges. Google Drive Locations no longer show two cloud badges.