Add DMS configuration and helper scripts

- Introduced a new `justfile` for managing DMS-related tasks, including a recipe for syncing live DMS configuration.
- Added a `devshell.nix` file to set up a development environment with necessary packages and shell hooks for DMS.
- Updated DMS settings to replace `defaultSettingsFile` with `defaultSeedDir` for improved configuration management.
- Created a new script `sync-seed.sh` to facilitate syncing DMS settings from the live configuration to host-specific directories.
- Enhanced documentation and examples for DMS configuration and usage.

modules/desktop/shells/dms/home-manager/default.nix

@@ -59,16 +59,26 @@
   '';
 
   jsonFormat = pkgs.formats.json { };
-  dmsSeedSettings =
-    if cfg.defaultSettingsFile != null then
-      builtins.fromJSON (builtins.readFile cfg.defaultSettingsFile)
+  dmsConfigDir = "${config.xdg.configHome}/DankMaterialShell";
+  defaultSeedDir = lib.attrByPath [ "chiasson" "desktop" "shells" "dms" "defaultSeedDir" ] null osConfig;
+
+  dmsSeedSources =
+    if defaultSeedDir != null then
+      {
+        "settings.json" = defaultSeedDir + "/settings.json";
+      }
+      // lib.optionalAttrs (builtins.pathExists (defaultSeedDir + "/plugin_settings.json")) {
+        "plugin_settings.json" = defaultSeedDir + "/plugin_settings.json";
+      }
     else
-      import ../_private/default-settings.nix {
-        inherit lib gpuTempEnabled;
-        extraRightBarWidgets = cfg.extraRightBarWidgets;
+      {
+        "settings.json" = jsonFormat.generate "dms-settings-seed.json" (
+          import ../_private/default-settings.nix {
+            inherit lib gpuTempEnabled;
+            extraRightBarWidgets = cfg.extraRightBarWidgets;
+          }
+        );
       };
-  dmsSeedFile = jsonFormat.generate "dms-settings-seed.json" dmsSeedSettings;
-  dmsSettingsPath = "${config.xdg.configHome}/DankMaterialShell/settings.json";
 
   # Directory name must match each plugin's `id` in plugin.json.
   thirdPartyPlugins = {
@@ -158,15 +168,6 @@ in {
       Ship rbw-lock-toggle into `~/.config/DankMaterialShell/plugins/rbwLockToggle/` (directory name matches plugin id; Bitwarden vault lock/unlock in the bar).
     '';
 
-    dms.defaultSettingsFile = lib.mkOption {
-      type = lib.types.nullOr lib.types.path;
-      default = null;
-      description = ''
-        Host-specific first-run `settings.json` seed. When set, replaces the bundled
-        `default-settings.nix` template on fresh profiles.
-      '';
-    };
-
     dms.bundleThirdPartyPlugins = lib.mkOption {
       type = lib.types.bool;
       default = true;
@@ -270,22 +271,25 @@ in {
     session = { };
   };
 
-  # Detach store symlink so UI edits survive rebuilds; seed defaults only on a fresh profile.
-  home.activation.dmsMaterializeSettings = lib.hm.dag.entryBefore [ "writeBoundary" ] ''
-    settingsFile=${lib.escapeShellArg dmsSettingsPath}
-    if [ -L "$settingsFile" ]; then
-      mkdir -p "$(dirname "$settingsFile")"
-      ${pkgs.coreutils}/bin/cp --remove-destination -L "$settingsFile" "$settingsFile"
-    fi
-  '';
-
-  home.activation.dmsSeedSettings = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
-    settingsFile=${lib.escapeShellArg dmsSettingsPath}
-    mkdir -p "$(dirname "$settingsFile")"
-    if [ ! -e "$settingsFile" ]; then
-      ${pkgs.coreutils}/bin/cp ${lib.escapeShellArg dmsSeedFile} "$settingsFile"
-      chmod u+w "$settingsFile"
-    fi
+  # Detach store symlinks so UI edits survive rebuilds; seed defaults only on a fresh profile.
+  home.activation.dmsSeedConfig = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
+    ${lib.concatMapStringsSep "\n" (
+      fileName:
+      let
+        dest = "${dmsConfigDir}/${fileName}";
+        src = dmsSeedSources.${fileName};
+      in ''
+        dest=${lib.escapeShellArg dest}
+        mkdir -p "$(dirname "$dest")"
+        if [ -L "$dest" ]; then
+          ${pkgs.coreutils}/bin/cp --remove-destination -L "$dest" "$dest"
+        fi
+        if [ ! -e "$dest" ]; then
+          ${pkgs.coreutils}/bin/cp ${lib.escapeShellArg src} "$dest"
+          chmod u+w "$dest"
+        fi
+      ''
+    ) (lib.attrNames dmsSeedSources)}
   '';
 
   # matugen won't create missing output_path parents; run before DMS theme generation.