typo

Sets up the typo monorepo development environment. Installs Node.js via fnm/nvm from `.nvmrc`, enables Corepack so the pnpm version pinned in `package.json#packageManager` is used, installs workspace dependencies with `pnpm install`, installs the Rust toolchain required by the Tauri desktop app, and optionally Ruby for the `core/` Rails app. Use when the user asks to set up the project, bootstrap a fresh clone, install dependencies, or resolves environment errors running `pnpm`, `cargo`, `tauri`, or `bin/rails` commands.

Creates a new GitHub pull request with `gh pr create` using title and body from the branch commits and diff. If the current branch is main or master, checks out a new branch whose name is a short kebab-case slug derived from the changes, then proceeds. PR title is one simple sentence over all commits in the range, preserving emoji from those commits. Use when opening a new PR, running `gh pr create`, or publishing a branch without an existing PR.

Reads GitHub PR review feedback (inline threads, AI assistants such as Gemini, bots, or humans), implements justified changes, replies on each thread with a short technical note, and resolves conversations. Use when the user wants to address PR review comments, clear review threads, or work through suggestions on an open pull request.

Refreshes GitHub pull request title and description (summary body) from the branch’s commits and diff, then applies updates with `gh pr edit`. Use when the user asks to refresh, rewrite, regenerate, or sync PR title or PR body with the branch, or when working with `gh pr`.

Use when the user wants to commit staged changes, asks for a commit message, or wants a concise summary of the staged diff before committing.