Potential fix for code scanning alert no. 1: Workflow does not contain permissions

[hankerspace]

Potential fix for https://github.com/isaratech/isoflam/security/code-scanning/1

In general, fix this by adding an explicit permissions: block with the minimum required scopes, either at the top level of the workflow (applies to all jobs) or inside the specific job. For this workflow, the steps only read the repository contents and do not push changes, create releases, or modify issues/PRs, so contents: read is sufficient as a minimal secure default.

The single best fix without changing existing functionality is to add a workflow-level permissions: block directly under the name: (before on:). This will constrain the GITHUB_TOKEN for all jobs (currently just build-and-test) to read-only repository contents. No other changes are needed, because actions/checkout, actions/setup-node, npm ci, npm test, and npm run build all work with contents: read and do not need write permissions.

Concretely, in .github/workflows/build-and-test.yml, insert:

permissions:
  contents: read

after line 1 (name: Build and Test). No imports, methods, or other definitions are required since this is pure workflow configuration.

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[Copilot]

Pull request overview

This PR addresses GitHub code scanning alert #1 by explicitly defining minimal GITHUB_TOKEN permissions in the Build and Test workflow, reducing default token scope while preserving workflow behavior.

Changes:

• Add a workflow-level permissions: block.
• Restrict permissions to contents: read for the entire workflow.

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