Added
First-run setup panel. Downright now installs itself. On first launch it offers to become the default Markdown app and to install the down command line tool, and - with no decision to make - registers its Quick Look extensions with Launch Services and pluginkit and resets Quick Look's caches so existing .md files pick up real Finder icons. Everything here previously lived only in Scripts/install.sh, which runs for people building from source and for nobody else: the shipping path of download the DMG, drag to Applications, double-click performed none of it.

Added
The panel detects an app still running from a DMG or Downloads - Gatekeeper runs those from a randomised read-only mount where no registration can stick - and offers to move it into Applications and relaunch.
Added
Settings → General → System integration repeats every setup step, names the app currently holding the Markdown association, and opens the Quick Look pane of System Settings for the one switch macOS will not let an app throw.
Added
Help → Take the Tour, so the tour outlives the start window's button.
Added
Recent files say what they are about. Each row carries a second line with the document's first heading, so notes.md reads as "Agent output" and a folder of identically-named agent output stops being a column of interchangeable rows. The folder is shown behind it, or alone when there is no heading; neither is repeated when the two would say the same thing.
Added
⌘1-⌘6 open the corresponding recent file, with the shortcut spelled out once in the list header and each row carrying its own ordinal.
Changed
Appearance now follows macOS reliably. Theme selection no longer silently disables system following, the View menu exposes separate light and dark palettes, and Light/Dark transitions rebuild cached TextKit paragraphs so old foreground colours cannot survive over the new page.
Changed
Find bar and Tasks panel motion pass. The find pill now opens above the document without moving the page, flows outward from the toolbar lens as one liquid-glass body before its readable controls resolve, and grows around the replace row as it expands. The match count crossfades and its tray glides open and closed, and the invalid-regex glyph pops in on a small spring instead of hard-appearing. In the Tasks panel, the empty state dissolves as a plan's first rows slide in, and the quick-add row crossfades its hint into the editing field instead of swapping them.
Changed
The find bar's previous/next and Replace buttons park themselves while there is nothing to act on - an empty query or a settled "No matches" - and re-arm the moment the text changes, so a control that cannot do anything no longer offers a click that lands nowhere.
Changed
Right-clicking a Tasks panel "N completed" pile offers Show/Collapse Completed and Copy Status Report - the same fold the row's click performs, plus the report every other section surface already had.
Changed
The floating Tasks panel's empty state was clipped at the bottom - the card was sized to a fixed minimum taller than its content, and the centered "Add task" button rode past the rounded lower edge. The panel now measures the empty chrome's full height (state, gap, button, and the bottom margin) so the card fits the whole thing.
Changed