Simplify netty worktree commands

Collapse the netty worktree helpers into wt create/remove/prune, keep wt-create as a thin wrapper, and drop the standalone wt-path command.

Also make the netty zsh wrappers handle cd-only behavior for wtc and wt remove.

Co-authored-by: Codex <noreply@openai.com>

home/netty-worktree.nix

@@ -9,6 +9,26 @@ in {
   home.packages = builtins.attrValues customScripts.nettyPackages;
 
   programs.zsh.initContent = lib.mkAfter ''
+    wt() {
+      if [[ "''${1:-}" == remove ]]; then
+        local current_worktree_root common_git_dir main_repo_root
+
+        current_worktree_root=$(git rev-parse --show-toplevel 2>/dev/null) || {
+          command wt "$@"
+          return
+        }
+
+        common_git_dir=$(git rev-parse --path-format=absolute --git-common-dir 2>/dev/null) || return
+        main_repo_root=$(cd "''${common_git_dir}/.." && pwd -P) || return
+
+        command wt "$@" || return
+        cd -- "$main_repo_root" || return
+        return
+      fi
+
+      command wt "$@"
+    }
+
     wtc() {
       if [[ $# -ne 1 ]]; then
         printf 'usage: wtc <worktree-name>\n' >&2
@@ -16,7 +36,7 @@ in {
       fi
 
       local worktree_path
-      worktree_path=$(command wt-create "$1") || return
+      worktree_path=$(wt create "$1") || return
       cd -- "$worktree_path" || return
     }
   '';