Restore main.yml workflow badge support

[Copilot]

The repository referenced a GitHub Actions badge for .github/workflows/main.yml, but that workflow file was no longer a valid Actions workflow. This change restores main.yml as a runnable workflow and surfaces the badge in the README.

• Workflow repair

  • Replaced the invalid contents of .github/workflows/main.yml with a valid Main workflow.
  • Scoped the workflow to the repository’s Main branch and workflow_dispatch.
  • Kept validation minimal and repo-aligned: JavaScript syntax checks plus the existing build command.

• README badge

  • Added the main.yml workflow badge at the top of README.md.
  • Linked the badge directly to the workflow page for quick status inspection.

• Validation shape

  • Removed the dependency-install assumption from this workflow path.
  • The restored workflow now matches the current repository model of lightweight static-site validation.

name: Main

on:
  push:
    branches: ["Main"]
  pull_request:
    branches: ["Main"]
  workflow_dispatch:

jobs:
  validate:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 20
      - run: node --check script.js && node --check otel-init.js && node --check otel-utils.js
      - run: npm run build

• Screenshot
  • 

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