Update README.md

README.md

@@ -34,7 +34,8 @@ Press **Super+Shift+/** after logging in to see every keybind.
 | Audio | PipeWire, WirePlumber, SOF firmware |
 | Hardware | Bluetooth, `tuned-ppd` power profiles, `fwupd` firmware updates |
 | Desktop | niri, DankMaterialShell, `xwayland-satellite` |
-| niri config | Waybar disabled (DMS is the bar), Super+T opens Ptyxis, Super+D opens the DMS launcher, Super+Alt+L locks with DMS |
+| niri config | Waybar autostart disabled; DMS keybinds and Ptyxis added through an included `dms-setup.kdl` |
+| Snapshots | snapper + Btrfs Assistant, with a before/after snapshot around every dnf transaction |
 | Removed | Waybar, mako, fuzzel, swaybg, swayidle, swaylock, Alacritty (DMS replaces them) |
 | Login screen | DMS greeter (greetd), graphical boot target |
 | Essentials | Ptyxis, Nautilus, Firefox, desktop portals, GNOME Keyring, Noto fonts, Flatpak + Flathub, fastfetch |
@@ -62,6 +63,38 @@ on re-runs; any `~/.zshrc` that was already there is backed up to `~/.zshrc.bak`
 - Fingerprint reader setup (Framework laptops)
 - EasyEffects (for Framework's speaker profile)
 
+## Keybinds added
+
+These live in `~/.config/niri/dms-setup.kdl`, included at the end of `config.kdl` so they
+override niri's defaults. To change one, add your own bind in `config.kdl` **after** the
+`include` line; the script overwrites `dms-setup.kdl` on re-runs.
+
+| Keys | Does |
+| --- | --- |
+| Super+T | Ptyxis |
+| Super+D | DMS app launcher |
+| Super+Alt+L | Lock screen |
+| Super+Alt+V | Clipboard history |
+| Super+Alt+N | Notifications |
+| Super+Alt+C | Control centre |
+| Super+Alt+S | DMS settings |
+
+## Snapshots and rollback
+
+On a Btrfs install (Fedora's default), the script sets up snapper:
+
+- Every `dnf` install, update or removal takes a **pre** and **post** snapshot of the root
+  filesystem.
+- The finished setup is saved as an "important" snapshot called
+  `fedora-niri-dms-setup baseline`.
+- The 10 newest snapshot pairs are kept and older ones are cleaned up automatically.
+
+To undo a bad update, open **Btrfs Assistant** → Snapper, pick the snapshot from before the
+update, and restore it. From a terminal, `snapper -c root list` shows them all.
+
+Snapshots cover `dnf` only. Flatpak updates aren't captured, and booting straight into a
+snapshot from GRUB would need `grub-btrfs`, which isn't in Fedora's repos.
+
 ## Requirements
 
 - Fedora 43 or newer, installed as **Fedora Custom Operating System**
@@ -99,6 +132,23 @@ rebooting:
 - No HDR yet: niri doesn't support it. HDR gaming needs a separate gamescope session.
 - DMS comes from the stable `avengemedia/dms` COPR, not the faster-moving `dms-git`.
 
+## Development
+
+Every push and pull request runs `.gitea/workflows/shellcheck.yml`, which syntax-checks
+and ShellChecks every `.sh` file in the repo. It needs Actions enabled on the repo
+(Settings → Repository → Enable Repository Actions) and an `act_runner` registered with
+the `ubuntu-latest` label.
+
+```
+fedora-niri-dms/
+├── fedora-niri-dms-setup.sh
+├── README.md
+├── LICENSE
+└── .gitea/
+    └── workflows/
+        └── shellcheck.yml
+```
+
 ## License
 
 MIT