Add omarchy-dev-font for adding marks to the icon font (#6819)

AGENTS.md

@@ -6,6 +6,7 @@ matching guide before starting:
 - [`agents/skills/command-metadata.md`](agents/skills/command-metadata.md) - adding or changing commands in `bin/`
 - [`agents/skills/install-scripts.md`](agents/skills/install-scripts.md) - working under `install/` or on system/user setup commands
 - [`agents/skills/shell-dev.md`](agents/skills/shell-dev.md) - editing the Quickshell desktop under `shell/`
+- [`agents/skills/icon-font.md`](agents/skills/icon-font.md) - adding branded glyphs to `default/fonts/omarchy/omarchy.ttf`
 - [`agents/skills/acceptance-tests.md`](agents/skills/acceptance-tests.md) - writing or running graphical acceptance tests under `test/acceptance.d/`
 - [`agents/skills/visual-verification.md`](agents/skills/visual-verification.md) - verifying any change with a visual effect in the running UI
 - [`docs/migrations.md`](docs/migrations.md) - creating or changing migrations under `migrations/`