diff --git a/AGENTS.md b/AGENTS.md
index bafcb76..fd92b2d 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -27,7 +27,7 @@ Ely GPUI Component. A component library for GPUI, in light and dark.
 - `cargo run --example gallery -- --narrow 280 --capture <dir>` lays each page, header and body, at that width in a padded card and shoots it without its script, whose aims are measured at full width. Demos that set their own width run past the card.
 - `RUSTC_BOOTSTRAP=1 cargo check --lib --target wasm32-unknown-unknown` checks the web build; gpui_web's `wasm_thread` needs the bootstrap, as Zed's web examples do.
 - `ELY_GALLERY_ASSETS=<address of out/assets/> scripts/web.sh <out>` builds the gallery for the browser, profile `web`, and fails past Cloudflare's 25 MiB. It opens at `?page=<slug>&story=<title or slug>&theme=light|dark`; the host page calls `gallery.setTheme(mode)` or posts `{ ely: "theme", theme }`, before the wasm runs or after, and the page posts `{ ely: "ready" }` to its parent once it runs.
-- In `frontend/`: `ELY_GALLERY_ASSETS=<site>/gallery/assets/ pnpm gallery` builds the gallery into `public/gallery`, `pnpm dev` serves the site, `pnpm build` checks types and writes `dist`, `pnpm deploy` runs `wrangler deploy`. `node scripts/og.mjs`, with `pnpm preview` up, renders `public/og.png` from the hero. The site reads `examples/gallery/stories.json` for its chapters, stories and search.
+- In `frontend/`: `ELY_GALLERY_ASSETS=<site>/gallery/assets/ pnpm gallery` builds the gallery into `public/gallery`, `pnpm dev` serves the site, `pnpm build` checks types and writes `dist`, `pnpm deploy` runs `wrangler deploy`, `pnpm test` runs the iso engine's tests, and `pnpm local` builds the gallery for localhost, builds the site and serves both on http://localhost:4173/ (wasm-bindgen and wasm-opt on PATH, as `scripts/web.sh` says). `node scripts/og.mjs`, with `pnpm preview` up, renders `public/og.png` from the hero. The site reads `examples/gallery/stories.json` for its chapters, stories and search.
 - In `frontend-reference/`: `pnpm dev` serves it, `pnpm build` checks types and writes `dist`. serro.ai 403s plain curl and headless Chromium; measure it with Playwright's Firefox. `sh RECON/tools/pipeline.sh` regenerates the clone from the captured artifacts.
 - `python3 scripts/stories.py` writes `examples/gallery/stories.json`, every page's sections in drawing order with their components, for the site: the names in a title, and in its `SHOWN` table what a story draws beyond them. It fails on a section opened inside another and on a ticked entry with a home of its own that no story names. `scripts/check.sh` refuses a stale one.
 - `cargo test --lib --features test-support`, `cargo clippy --all-targets --features test-support -- -D warnings`, `cargo fmt --check`. `scripts/check.sh` runs them with the house rules and lints the gallery for wasm32.
diff --git a/frontend/package.json b/frontend/package.json
index cba0f4b..46e9d28 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -7,6 +7,7 @@
     "dev": "vite",
     "build": "tsc --noEmit && vite build",
     "preview": "vite preview",
+    "local": "ELY_GALLERY_ASSETS=http://localhost:4173/gallery/assets/ pnpm gallery && pnpm build && vite preview --port 4173 --strictPort",
     "deploy": "wrangler deploy",
     "e2e": "playwright test",
     "test": "node --test src/iso/engine.test.ts"