Integrate pi

modules/home/pi.nix

@@ -0,0 +1,25 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.dot.pi;
+  piPath = "${config.dot.dotfilesPath}/modules/pi/agent";
+in
+{
+  options.dot.pi = {
+    enable = lib.mkEnableOption "managed pi coding agent configuration" // {
+      default = true;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    # Out-of-store symlinks so the files stay editable without a nix rebuild.
+    # Only the managed files are linked; pi's runtime files (auth.json,
+    # sessions/, models-store.json) are left untouched in ~/.pi/agent.
+    home.file = {
+      ".pi/agent/settings.json".source =
+        config.lib.file.mkOutOfStoreSymlink "${piPath}/settings.json";
+      ".pi/agent/extensions".source =
+        config.lib.file.mkOutOfStoreSymlink "${piPath}/extensions";
+    };
+  };
+}