pinwheel: Ensure opencode has access to interactive bash

hosts/pinwheel/modules/work/default.nix

@@ -12,6 +12,18 @@ let
 in
 {
   home-manager.users.alex = {
+    # Ensure bashInteractive is first in PATH inside nix devshells.
+    # stdenv provides a non-interactive bash that breaks Copilot shell commands.
+    # Adding bashInteractive to home.packages alone isn't enough because devshell
+    # packages are prepended to PATH. This precmd hook runs after direnv's hook
+    # and re-prepends bashInteractive so it takes priority.
+    programs.zsh.initContent = ''
+      _ensure_bash_interactive() {
+        [[ "$PATH" == "${pkgs.bashInteractive}/bin:"* ]] || export PATH="${pkgs.bashInteractive}/bin:$PATH"
+      }
+      precmd_functions+=(_ensure_bash_interactive)
+    '';
+
     home.sessionVariables = {
       GITHUB_ACTOR = "Alexander Heldt";
       GITHUB_TOKEN = "$(${pkgs.coreutils}/bin/cat ${config.age.secrets.work-github-token.path})";
@@ -25,6 +37,7 @@ in
         "IdeaVIM"
         "com.github.copilot"
       ])
+      pkgs.bashInteractive
 
       (pkgs.google-cloud-sdk.withExtraComponents [
         pkgs.google-cloud-sdk.components.gke-gcloud-auth-plugin