feat(wisdom): introduce wisdomSimpleSlice helper for package modules

Implement a `wisdomSimpleSlice` helper in `desktop/options.nix` to reduce
boilerplate for simple Home Manager modules that only manage packages.
This helper handles the `enable` option creation, platform-gating via
`availableOn`, and conditional inclusion in `home.packages`.

Refactor several existing wisdom modules to use this new helper:
- `wisdomBrowsersChrome`
- `wisdomBrowsersEdge`
- `wisdomEditorsKate`
- `wisdomEditorsObsidian`

Additionally, clean up `wisdom/default.nix` by removing the explicit
import of `wisdomShellBash` (which is now handled via auto-wiring) and
improving code formatting.

modules/wisdom/default.nix

@@ -1,24 +1,23 @@
 # HM side of the flake; option tree is `chiasson.home.*` (docs/conventions.md).
 { self, inputs, ... }: {
-  # Root module: chiasson.home.enable + bash. Other `wisdom*` slices auto-wire via
-  # `lib.wisdomCatalogExtraModules`; hosts flip `chiasson.home.*.enable` rather than re-importing.
+  # Root module: chiasson.home.enable + git identity. Other `wisdom*` slices (including
+  # the bash shell) auto-wire via `lib.wisdomCatalogExtraModules`; hosts flip
+  # `chiasson.home.*.enable` rather than re-importing.
   flake.homeManagerModules.wisdom =
     { config, lib, pkgs, ... }:
     let
       cfg = config.chiasson.home;
     in
     {
-      imports = [
-        self.homeManagerModules.wisdomShellBash
-      ];
-
       options.chiasson.home = {
-        enable = lib.mkEnableOption ''
-          HM profile root for this flake (bash on by default). Desktop hosts use
-          `lib.wisdomCatalogExtraModules` once per user and flip `chiasson.home.*.enable` on the host.
-        '' // {
-          default = true;
-        };
+        enable =
+          lib.mkEnableOption ''
+            HM profile root for this flake (bash on by default). Desktop hosts use
+            `lib.wisdomCatalogExtraModules` once per user and flip `chiasson.home.*.enable` on the host.
+          ''
+          // {
+            default = true;
+          };
 
         extraPackages = lib.mkOption {
           type = lib.types.listOf lib.types.package;
@@ -29,20 +28,25 @@
         };
       };
 
-      config = lib.mkIf cfg.enable (lib.mkMerge [
-        { home.packages = cfg.extraPackages; }
+      config = lib.mkIf cfg.enable (
+        lib.mkMerge [
+          { home.packages = cfg.extraPackages; }
 
-        # Base git identity + encryption/player tools shared by every HM user.
-        {
-          programs.git = {
-            enable = true;
-            settings.user = {
-              name = "OlivierChiasson";
-              email = "olivierchiasson@hotmail.fr";
+          # Base git identity + encryption/player tools shared by every HM user.
+          {
+            programs.git = {
+              enable = true;
+              settings.user = {
+                name = "OlivierChiasson";
+                email = "olivierchiasson@hotmail.fr";
+              };
             };
-          };
-          home.packages = [ pkgs.git-crypt pkgs.feishin ];
-        }
-      ]);
+            home.packages = [
+              pkgs.git-crypt
+              pkgs.feishin
+            ];
+          }
+        ]
+      );
     };
 }