release: v1.0.4

Correct the changelog by moving post-1.0.3 entries into a new 1.0.4
section and bumping the version.

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

src/app/version.go

@@ -3,4 +3,4 @@ package app
 // Version is the application version shown in the GUI and used by build
 // scripts in artifact names. It is a var rather than a const so release builds
 // can override it with Go ldflags when CI tags a build.
-var Version = "1.0.3"
+var Version = "1.0.4"