Add v0.3.1 release notes for the monospace console restyle

docs/content/release-notes/v0.3.1.md

@@ -0,0 +1,57 @@
+---
+title: "v0.3.1"
+linkTitle: "v0.3.1"
+description: "The web console gets a console look: one monospace face, square corners, flat panels."
+weight: 5
+---
+
+`v0.3.1` restyles the web console (`ant serve`) into something that looks the
+way it reads: a flat **monospace terminal**. One fixed-width face runs through
+every screen, the corners are square, and the panels separate by tone instead of
+by borders and shadows.
+
+This release is purely visual. The CLI verbs, the JSON envelope, the read path,
+and the terminal console are all exactly as they were in `v0.3.0`. Only the look
+of the web console changed.
+
+## A console that looks like a console
+
+The whole web surface is now set in **Geist Mono**, a fixed-width face, from the
+hero headline down to the chips and the footer. It carries the terminal feel
+without a real terminal, and it keeps URIs, ids, and JSON aligned to a character
+grid wherever they appear.
+
+The font is embedded and served straight from the binary. There is no web font
+to fetch and no CDN to depend on, so `ant` is still a single static artifact and
+the console looks the same offline as it does online.
+
+## Square and flat
+
+Every corner is square. The rounding is gone from cards, inputs, buttons, chips,
+badges, folders, and the brand mark; the only curve left is the loading spinner,
+which has to be a circle to read as one.
+
+The chrome is flatter, too. The shadows are gone, and so are the dividing rules:
+the topbar no longer has a line under it, the sidebar no longer has one beside
+it, and table cells no longer have borders. Panels, inputs, chips, and hovers now
+read by a small shift in background tone, so the layout stays legible without a
+single box drawn around anything. It still ships with a light and a dark theme
+that follow your system and remember your choice.
+
+## Install and upgrade
+
+Every tagged version builds the same artifacts: archives for Linux, macOS,
+Windows, and FreeBSD, Linux packages (deb, rpm, apk), a multi-arch container
+image on GHCR, and package-manager entries. The binaries are pure Go, so there
+is nothing to install alongside them.
+
+```
+go install github.com/tamnd/ant/cmd/ant@v0.3.1
+```
+
+Or grab a binary from the [release
+page](https://github.com/tamnd/ant/releases/tag/v0.3.1), or pull the image:
+
+```
+docker run --rm -it ghcr.io/tamnd/ant:0.3.1 serve --addr 0.0.0.0:7777
+```