feat(github): add auto-conventional-commit hook with opencode integration

- Add prepare-commit-msg git hook that generates conventional commit messages
- Modularize fish configuration with separate conf.d files
- Convert configuration files from .text to .source format for structured data
- Add sops-nix SOPS configuration with explicit secret definitions
- Upgrade age identity to single key file management approach
- Add system activation script for age key management
- Generate .sops.yaml for SOPS creation rules
- Restructure README.md with improved table and cleaner formatting
- Refactor config files to use pkgs.formats.json/toml generators
- Implement YAML format for ashell and walker service configurations
- Update SSH config source to use sops secrets
- Convert zed and other config files to use structured .source format

home/services/wayland/walker.nix

@@ -1,29 +1,32 @@
-{pkgs, ...}: {
+{pkgs, ...}: let
+  toTOML = (pkgs.formats.toml {}).generate;
+in {
   users.users.someone.packages = [pkgs.walker pkgs.elephant];
 
-  xdg.configFile."walker/config.toml".text = ''
-    [keys]
-    launcher = "Mod+Space"
-
-    [keys.quit]
-    quit = "Mod+Shift+Q"
-    reload = "Mod+Shift+R"
-
-    [look]
-    all_monitors = true
-    background = "#1f1d2e"
-    foreground = "#cdd6f4"
-    selection = "#45475a"
-    active = "#89b4fa"
-    urgent = "#f38ba8"
-    alt_background = "#181825"
-    icon_theme = "Papirus-Dark"
-    terminal = "alacritty"
-
-    [look.font]
-    name = "Source Code Pro"
-    size = 14
-  '';
+  xdg.configFile."walker/config.toml".source = toTOML "config.toml" {
+    keys = {
+      launcher = "Mod+Space";
+      quit = {
+        quit = "Mod+Shift+Q";
+        reload = "Mod+Shift+R";
+      };
+    };
+    look = {
+      all_monitors = true;
+      background = "#1f1d2e";
+      foreground = "#cdd6f4";
+      selection = "#45475a";
+      active = "#89b4fa";
+      urgent = "#f38ba8";
+      alt_background = "#181825";
+      icon_theme = "Papirus-Dark";
+      terminal = "alacritty";
+      font = {
+        name = "Source Code Pro";
+        size = 14;
+      };
+    };
+  };
 
   systemd.user.services.elephant = {
     wantedBy = ["graphical-session.target"];