feat: add shared agent commit rules

Author: corrupt952

modules/agent-rules.md

@@ -0,0 +1,10 @@
+# Global Agent Rules
+
+## Commit messages
+
+- Follow explicit repository-local commit-message requirements first.
+- When the repository does not specify a requirement, use Conventional
+  Commits in the form `type: description`.
+- Omit the scope by default. Use `type(scope): description` only when
+  repository-local rules explicitly require a scope.
+- Do not infer a scope solely from directory names or isolated historical commits.

modules/claude/default.nix

@@ -19,6 +19,7 @@ in
     enable = true;
     package = null;
     inherit configDir;
+    context = ../agent-rules.md;
 
     outputStyles."Global Rules" = ./global-rules.md;
 

modules/codex/default.nix

@@ -38,6 +38,7 @@ in
   programs.codex = {
     enable = true;
     package = null;
+    context = ../agent-rules.md;
   };
 
   home.file."${codexHomeRelative}/hooks.json".source =

modules/opencode/default.nix

@@ -1,7 +1,10 @@
 _:
 
 {
-  programs.opencode.enable = true;
+  programs.opencode = {
+    enable = true;
+    context = ../agent-rules.md;
+  };
 
   xdg.configFile."opencode/plugins/wezterm-notify.ts".source =
     ./wezterm-notify.ts;