Add jscpd to find duplicated blocks of code

[jamescmartinez]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[Copilot]

Pull request overview

This PR introduces jscpd into the repository to detect duplicated code blocks and wires it into the main CI script, alongside a small refactor in the dashboard API layer to reduce pagination-related duplication.

Changes:

• Add jscpd as a dev dependency and a new lint:duplication script.
• Update npm run ci to include duplication linting.
• Refactor dashboard API pagination validation/parameter building to reuse shared helpers.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.

File	Description
packages/dashboard/src/lib/api.ts	Extracts shared pagination zod shape + param builder to reduce duplicated pagination handling.
package.json	Adds lint:duplication script and runs it in CI; adds jscpd dependency.
package-lock.json	Locks transitive dependencies introduced by jscpd.
jscpd.json	Adds baseline configuration for duplication scanning and ignore patterns.

[Copilot]

ignore currently excludes **/*.test.ts, but the repo also has test-like files such as packages/openworkflow/backend.testsuite.ts that won’t be excluded by this glob. If the intention is to keep duplication checks focused on production code, consider expanding the ignore patterns to cover *.testsuite.ts (and any other test filename conventions used here).

[Copilot]

With "threshold": 0 and "exitCode": 1, jscpd will fail CI on any detected duplication. If the goal is to introduce duplication reporting incrementally, consider setting a non-zero threshold (or adjusting exitCode) to avoid blocking CI on pre-existing duplication until it’s addressed.