Background Namespaces/Layers do not exist anymore?

### Compositor

Niri

### Distribution

Other (specify below)

### If Other, please specify

EndeavourOS

### Select your Installation Method

Distro Packaging

### Was your original Installation method different?

None

### If no, specify

_No response_

### dms doctor -vC

Click to expand

## DMS Doctor Report

**System**
- [ok] Operating System: EndeavourOS
- ID: endeavouros, Version: 2025.03.19, Arch: amd64
- [ok] Architecture: amd64
- [ok] Display Server: Wayland
- WAYLAND_DISPLAY=wayland-1

**Versions**
- [ok] DMS CLI: dms v1.4.1
- /usr/bin/dms
- [warn] Quickshell: quickshell 0.2.1, revision , distributed by: Arch Linux
- /usr/bin/qs
- [ok] DMS Shell: v1.4.1
- /usr/share/quickshell/dms

**Installation**
- [ok] DMS Configuration: Found
- /usr/share/quickshell/dms
- [ok] shell.qml: Present
- /usr/share/quickshell/dms/shell.qml
- [info] Install Type: System package
- /usr/share/quickshell/dms

**Compositor**
- [ok] Hyprland: 0.53.3
- /usr/bin/hyprland
- [ok] niri: 25.11
- /usr/bin/niri
- [ok] labwc: 0.9.3
- /usr/bin/labwc
- [info] Active: niri

**Quickshell Features**
- [info] Polkit: Not available
- Authentication prompts
- [info] IdleMonitor: Not available
- Idle detection
- [info] IdleInhibitor: Not available
- Prevent idle/sleep
- [info] ShortcutInhibitor: Not available
- Allow shortcut management (niri)

**Optional Features**
- [ok] accountsservice: Available
- User accounts
- [ok] power-profiles-daemon: Available
- Power profile management
- [ok] logind: Available
- Session management
- [warn] cups-pk-helper: Not available (install cups-pk-helper)
- Printer management
- [ok] I2C/DDC: 2 monitor(s) detected
- External monitor brightness control
- [ok] qt6-imageformats: Installed (1 formats)
- Formats: GIF (/usr/lib/qt6/plugins/imageformats)
- [warn] kimageformats: Not installed
- AVIF, HEIF, JXL support
- [ok] Terminal: alacritty
- [ok] Network: NetworkManager
- NetworkManager present. Using NM API.
- [ok] matugen: Installed
- Dynamic theming
- [ok] dgop: Installed
- System monitoring
- [ok] cava: Installed
- Audio visualizer
- [info] khal: Not installed
- Calendar events
- [info] danksearch: Not installed
- File search
- [info] fprintd: Not installed
- Fingerprint auth

**Config Files**
- [ok] settings.json: Present
- /home/lopolin/.config/DankMaterialShell/settings.json
- [info] clsettings.json: Not yet created
- /home/lopolin/.config/DankMaterialShell/clsettings.json
- [ok] plugin_settings.json: Present
- /home/lopolin/.config/DankMaterialShell/plugin_settings.json
- [ok] session.json: Present
- /home/lopolin/.local/state/DankMaterialShell/session.json
- [ok] dms-colors.json: Present
- /home/lopolin/.cache/DankMaterialShell/dms-colors.json

**Services**
- [ok] dms.service: enabled, active
- [ok] greetd: enabled

**Environment**
- [info] QT_QPA_PLATFORMTHEME: kde
- [info] QS_ICON_THEME: Not set

---
**Summary:** 0 error(s), 3 warning(s), 26 ok

### Description

Some previous release ago there were still Background layers. Don't know when they were gone, since I hadn't noticed until yesterday. I had used them like this:

```kdl
// Hide Notifications
layer-rule {
exclude namespace=r#"^dms:.*:background$"#

match namespace="dms:notification-popup"
match namespace="dms:notification-center-popout"
match namespace="dms:notification-center-modal"
match namespace="dms:clipboard"

block-out-from "screen-capture"
}
```

This hides just the modal without any additional things. In the case of the clipboard: when opening it, instead of the entire screen going black, it was just the area with the clipboard.

### Expected Behavior

Background dim stays visible to screen capture, actual content is hidden. In case of history, only the notification is hidden instead of the entire right-hand side.

### Steps to Reproduce

1. take config from above
2. put it into any Niri config and save
3. capture screen with OBS
4. open Clipboard history, get a notification or similar
5. review footage

### Error Messages/Logs

_No response_

### Screenshots/Recordings

Note: to take screenshot properly, do it manually and select region. If doing fullscreen or window screenshot, screencapture blocks are applied.

Start by reproducing the issue with the supplied niri layer-rule configuration, DMS setup, and an OBS screen capture. Compare clipboard history and notification behavior with the background namespace excluded; done means the dim background remains visible to capture while only the intended modal or notification content is hidden.

Written by the indexing model from the issue text.