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/terminal/software/opencode/default.nix

@@ -31,12 +31,13 @@
     '';
   configFile = "opencode/config.json";
   tuiFile = "opencode/tui.json";
+  toJSON = (pkgs.formats.json {}).generate;
 in {
   users.users.someone.packages = [
     opencodeWrapped
   ];
   xdg.configFile = {
-    "${configFile}".text = builtins.toJSON {
+    "${configFile}".source = toJSON "config.json" {
       "$schema" = "https://opencode.ai/config.json";
       plugin = [
         "opencode-antigravity-auth@latest"
@@ -118,7 +119,7 @@ in {
       provider = providers.config;
     };
 
-    "opencode/oh-my-openagent.json".text = builtins.toJSON {
+    "opencode/oh-my-openagent.json".source = toJSON "oh-my-openagent.json" {
       "$schema" = "https://raw.githubusercontent.com/code-yeongyu/oh-my-openagent/master/assets/oh-my-opencode.schema.json";
       agents = {
         "sisyphus-junior" = {model = "opencode/nemotron-3-super-free";};
@@ -134,7 +135,7 @@ in {
       };
     };
 
-    "${tuiFile}".text = builtins.toJSON {
+    "${tuiFile}".source = toJSON "tui.json" {
       "$schema" = "https://opencode.ai/tui.json";
       theme = "gruvbox";
     };