Feature/update packages

[jithinvmohan]

No description provided.

[Copilot]

Pull request overview

This PR modernizes the project’s toolchain and runtime requirements as part of a package refresh, including moving static file serving in the admin portal off node-static and onto the serve-static/finalhandler stack, and switching linting from semistandard to eslint.

Changes:

• Bumped project major version to 6.0.0 and raised the Node.js engine requirement to >= 18.0.0.
• Replaced node-static usage in the admin portal with serve-static + finalhandler for serving /status, /js, and /css routes.
• Replaced semistandard with ESLint and applied small code tweaks (unused arg rename, object/export property shorthand) to satisfy the new lint rules.

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
webroot/js/scripts.js	Renames an unused event parameter to comply with the new unused-args lint rule.
test/e2e.stubs.js	Uses object property shorthand for port (lint/style alignment).
test/e2e.admin.js	Uses object property shorthand for port in multiple contexts (lint/style alignment).
src/portals/admin.js	Switches static file serving from node-static to serve-static + finalhandler.
src/console/cli.js	Uses property shorthand in module.exports (lint/style alignment).
src/console/args.js	Uses property shorthand in module.exports (lint/style alignment).
package.json	Major version bump; swaps semistandard→eslint; updates dependencies; raises Node engine requirement.
CHANGELOG.md	Documents the 6.0.0 breaking changes and dependency/tooling updates.
.eslintrc.json	Adds ESLint configuration, including browser overrides and external webroot ignores.

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