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HTML Studio — sandboxed HTML/CSS/JS editor with live preview

Write HTML/CSS/JS, see it render live in a sandboxed iframe (opaque origin), Save to a shareable link — backend injected.

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# Install `html-studio` — HTML Studio — sandboxed HTML/CSS/JS editor with live preview

> Write HTML/CSS/JS, see it render live in a sandboxed iframe (opaque origin), Save to a shareable link — backend injected.

📚 Knowledge base : https://resource.rahmanef.com/llms.txt
📦 Slice detail   : https://resource.rahmanef.com/slices/html-studio
🧠 JSON catalog   : https://resource.rahmanef.com/api/knowledge?slice=html-studio
🔗 Source         : https://github.com/rahmanef63/resource-site/tree/main/frontend/slices/html-studio

## 1. Install

```bash
npx rahman-resources add html-studio
# alias: npx rr add html-studio
```

The CLI copies `frontend/slices/html-studio/` into your project + augments `.env.example` + installs npm deps automatically. Run it from your project root.

## 2. What it ships

- npm: `lucide-react`
- shadcn primitives: `button`, `input`, `textarea`, `scroll-area`

## 3. Wire it up

Stack: Next 16 + React 19 + Tailwind 4 + shadcn/ui. A sandboxed HTML/CSS/JS studio: editor + live iframe preview + saved pages. Fully client-side; backend optional.

STEP 1 — Install. `npx rr add html-studio`. Ensure `@/features/html-studio` resolves and Tailwind scans the slice folder.

STEP 2 — Deps. npm: `lucide-react`. shadcn: `npx shadcn@latest add button input textarea scroll-area`.

STEP 3 — Mount. `<HtmlStudio />` in a height-bearing box — unwired it runs on an in-memory mock (editor + live sandboxed preview + saved list all live). Pass `payload={{ slug }}` to open a page, or register `htmlStudioApp` in an appshell manifest.

STEP 4 — Real backend. `configureHtmlStudio({ mode:"live", save, load, list, remove })` — save takes { slug?, title, html, visibility } and returns { slug }; load(slug) -> SavedPage | null; omit save for a read-only sandbox or list to hide the saved rail. KEEP the iframe sandbox without allow-same-origin — it is the security boundary.

## Rules of engagement

- shadcn-only UI primitives. No raw `<button>` / `<dialog>` / native date or file inputs.
- 200-line hard cap per source file (extract neighbours when over).
- All Convex queries hit an index (`.withIndex(...)`); never bare `.collect()`.
- Public mutations/queries declare `args:` validators + authz.
- Full ruleset: https://resource.rahmanef.com/best-practice

The agent will fetch /llms.txt for the full ruleset and use /api/knowledge for the JSON catalog.

# Install `html-studio` — HTML Studio — sandboxed HTML/CSS/JS editor with live preview > Write HTML/CSS/JS, see it render live in a sandboxed iframe (opaque origin), Save to a shareable link — backend injected. 📚 Knowledge base : https://resource.rahmanef.com/llms.txt 📦 Slice detail : https://resource.rahmanef.com/slices/html-studio 🧠 JSON catalog : https://resource.rahmanef.com/api/knowledge?slice=html-studio 🔗 Source : https://github.com/rahmanef63/resource-site/tree/main/frontend/slices/html-studio ## 1. Install ```bash npx rahman-resources add html-studio # alias: npx rr add html-studio ``` The CLI copies `frontend/slices/html-studio/` into your project + augments `.env.example` + installs npm deps automatically. Run it from your project root. ## 2. What it ships - npm: `lucide-react` - shadcn primitives: `button`, `input`, `textarea`, `scroll-area` ## 3. Wire it up Stack: Next 16 + React 19 + Tailwind 4 + shadcn/ui. A sandboxed HTML/CSS/JS studio: editor + live iframe preview + saved pages. Fully client-side; backend optional. STEP 1 — Install. `npx rr add html-studio`. Ensure `@/features/html-studio` resolves and Tailwind scans the slice folder. STEP 2 — Deps. npm: `lucide-react`. shadcn: `npx shadcn@latest add button input textarea scroll-area`. STEP 3 — Mount. `<HtmlStudio />` in a height-bearing box — unwired it runs on an in-memory mock (editor + live sandboxed preview + saved list all live). Pass `payload={{ slug }}` to open a page, or register `htmlStudioApp` in an appshell manifest. STEP 4 — Real backend. `configureHtmlStudio({ mode:"live", save, load, list, remove })` — save takes { slug?, title, html, visibility } and returns { slug }; load(slug) -> SavedPage | null; omit save for a read-only sandbox or list to hide the saved rail. KEEP the iframe sandbox without allow-same-origin — it is the security boundary. ## Rules of engagement - shadcn-only UI primitives. No raw `<button>` / `<dialog>` / native date or file inputs. - 200-line hard cap per source file (extract neighbours when over). - All Convex queries hit an index (`.withIndex(...)`); never bare `.collect()`. - Public mutations/queries declare `args:` validators + authz. - Full ruleset: https://resource.rahmanef.com/best-practice