Comments Disabled Error Block for React

Everything but the clipboard. A reaction adds one to its count and says so in the status line; pressing it again takes it back. Send message checks the note (ten characters at least), waits under a second, clears the field and says the note was kept in the page and nothing was sent. The Switch only says what a real page would do. To wire it for real, post the reaction from pickReactions, send the note from send, and save the Switch from watch.

Yes: it writes the essay's link to the clipboard, and the status line says so. If the browser refuses (a page not served over HTTPS, or no permission) the status line says the link could not be copied and the field stays selectable so it can be copied by hand. Nothing else is copied.

From the typed day the thread was closed and one AS_OF day standing in for today. "Closed 5 days ago" is worked out with UTC day numbers, so it reads the same on the server and in every time zone, and nothing reads the clock. In your app, take the day from the essay's record.

Yes. They are a labelled group of toggle buttons: Tab reaches the group, the Up and Down arrow keys move between pills and Space or Enter presses one. Each pill's name includes its count ("Moved me, 48 reactions"), the pressed pill is solid foreground and not only a colour change, and the status line announces the change.

The three cells stack in the order React, Share, Message, and the button is the last control in the panel. The status line moves above the Switch in the last band and keeps its room, so nothing shifts when a message appears.

No. A page whose comments are closed is still the essay, a normal 200: this is a panel under it, not an error screen. Close the form on the server too, so a request to post a comment is refused with a 403.