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

hosts/aesthetic/disko-config.nix

@@ -0,0 +1,32 @@
+{lib, ...}: {
+  disko.devices = {
+    disk.main = {
+      device = lib.mkDefault "/dev/nvme0n1";
+      type = "disk";
+      content = {
+        type = "gpt";
+        partitions = {
+          esp = {
+            name = "ESP";
+            size = "512M";
+            type = "EF00";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot/efi";
+            };
+          };
+          root = {
+            name = "root";
+            size = "100%";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountpoint = "/";
+            };
+          };
+        };
+      };
+    };
+  };
+}