Initial commit of 001code-html Scratch frontend project.

Includes scratch-gui, scratch-vm, scratch-blocks, scratch-render, scratch-l10n, and deployment config.

Co-authored-by: Cursor <cursoragent@cursor.com>

scratch-vm/.github/ISSUE_TEMPLATE.md

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+### Expected Behavior
+
+_Please describe what should happen_
+
+### Actual Behavior
+
+_Describe what actually happens_
+
+### Steps to Reproduce
+
+_Explain what someone needs to do in order to see what's described in *Actual behavior* above_
+
+### Operating System and Browser
+
+_e.g. Mac OS 10.11.6 Safari 10.0_

scratch-vm/.github/PULL_REQUEST_TEMPLATE.md

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+### Resolves
+
+_What Github issue does this resolve (please include link)?_
+
+### Proposed Changes
+
+_Describe what this Pull Request does_
+
+### Reason for Changes
+
+_Explain why these changes should be made_
+
+### Test Coverage
+
+_Please show how you have added tests to cover your changes_

scratch-vm/.github/workflows/deploy.yml

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+name: Deploy playground
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [develop]
+
+concurrency:
+  group: "deploy"
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+      - name: Install dependencies
+        run: npm ci
+      - name: Build playground
+        run: npm run build
+      - name: Build docs
+        run: npm run docs
+        # We expect to see syntax errors from the old jsdoc cli not understanding some of our syntax
+        # It will still generate what it can, so it's safe to ignore the error
+        continue-on-error: true
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./playground/
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    permissions:
+      pages: write
+      id-token: write
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+    - name: Deploy to GitHub Pages
+      id: deployment
+      uses: actions/deploy-pages@v4

scratch-vm/.github/workflows/node.js.yml

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+name: CI
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+      - run: npm ci
+      - run: npm run lint
+      - run: npm run build
+      - run: npm run test