release: 1.2.3

Close CHANGELOG [Unreleased] as 1.2.3; bump the compose pin and image references. Includes domain detail layout polish and Domains add-row.

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/development.md

@@ -141,7 +141,7 @@ Requires Go 1.26+ and `CGO_ENABLED=0`.
 
 ```sh
 make build        # bin/panel, bin/selfpost-backup (VERSION=dev by default)
-make build VERSION=1.2.2
+make build VERSION=1.2.3
 ```
 
 Or directly:

docs/guide.md

@@ -381,7 +381,7 @@ but it can look like an open port in external scans.
 ## Fixed image tag
 
 `deploy/docker-compose.yml` pins an explicit version (`ghcr.io/mixeme/selfpost:X.Y.Z`),
-deliberately never `:latest`. The current pin is `1.2.2`. Intermediate
+deliberately never `:latest`. The current pin is `1.2.3`. Intermediate
 CHANGELOG sections (`0.2.0`…`0.6.0`) record development cuts from before that
 image was published. Pinning matters because of the backup version check above:
 the panel binary's embedded version and the image tag that produced it are the