feat(cli): support SvelteKit setup

[maxffarrell]

Summary

• adds SvelteKit automatic setup detection and transforms for src/hooks.client.ts
• updates existing SvelteKit client hooks without duplicating the React Grab import
• covers SvelteKit detection, transform, configure, and real SvelteKit app build behavior

Closes #231

Validation

• nr build
• nr format
• nr lint
• nr typecheck
• nr test:cli
• real SvelteKit 2 / Svelte 5 test project: react-grab init -y --skip-install, repeat init idempotency check, app build, and browser runtime smoke test for window.__REACT_GRAB__

Full root nr test was also run after installing Playwright Chromium. Package builds passed, but the existing Playwright suite failed in keyboard activation and copy-feedback coverage unrelated to the SvelteKit setup path: 540 passed, 17 failed, 2 flaky, 6 did not run.

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Summary by cubic

Adds SvelteKit support to the CLI. It auto-detects @sveltejs/kit, injects a dev-only react-grab import into src/hooks.client.(ts|js) without duplication, and updates docs/CLI help with SvelteKit setup.

• New Features

  • Detects sveltekit via @sveltejs/kit and removes it from unsupported; CLI framework choices updated.
  • Creates or updates src/hooks.client.ts/.js with if (import.meta.env.DEV) { void import("react-grab"); }.
  • Skips changes if react-grab already exists in hooks.client, src/app.html, or +layout.svelte.
  • Supports options via previewOptionsTransform by upgrading the dynamic import to .then((m) => m.init(...)) once.
  • Improves init diff preview when original content is missing and write-permission checks for new files.
  • Updates READMEs and website install guides with SvelteKit instructions.

• Migration

  • In a SvelteKit app, run react-grab init. Re-running is safe and idempotent.

^{Written for commit 1bc0a3f. Summary will update on new commits.}

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Note

Medium Risk
Medium risk because it extends CLI project detection and file transforms to create/modify src/hooks.client.*, which could affect install/config behavior across frameworks if detection or idempotency edge cases are wrong.

Overview
Adds first-class SvelteKit support to grab init by detecting @sveltejs/kit projects and automatically injecting a dev-only react-grab dynamic import into src/hooks.client.(ts|js) (creating the file when missing and avoiding duplicates by also checking src/app.html).

Extends CLI option reconfiguration to update the SvelteKit dynamic import with .init({...}), improves diff/preview handling and write-permission checks for newly-created files, and updates docs/help text and tests to reflect SvelteKit being supported (not “unsupported”).

^{Reviewed by Cursor Bugbot for commit 1bc0a3f. Bugbot is set up for automated code reviews on this repo. Configure here.}

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[cubic-dev-ai]

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