.cursorrules

- Favor `contentGapItemSchema = z.object()` over `ContentGapItemSchema = z.object()`
- Favor `async run() {` over `run = async () => {` inside ES6 classes
- Favor `from './PosterboyCommand.ts'` over `from './PosterboyCommand'`
- Favor `return ideas.filter(isPresent)` over `ideas.filter((idea): idea is Idea => idea !== null)`
- Favor `if (!(err instanceof Error)) { throw new Error(`Was thrown a non-error: ${err}`) }` inside
  `catch` blocks to ensure the `error` is always an instance of `Error`
- Favor using real paths (`../lib/schemas.ts`) over aliases (`@/app/lib/schemas`).
- Favor using `.tsx` over `.jsx`.
- Favor `for (const comment of comments) {` over `comments.forEach((comment) => {`
- Do not touch `.env` files!
- Favor `satisfies` over `as`, consider `as` a sin
- Favor `unknown` over `any`, consider `any` a sin
- Favor validating data with Zod over using `any` or custom type guards
- Favor Yarn (4) over npm
- We use the `rewriteRelativeImportExtensions` TS 5.7 compiler option, so for local TypeScript
  files, import with the `.ts` / `.tsx` extension (not js, not extensionless)