added github actions

[kihuha]

No description provided.

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Project	Deployment	Actions	Updated (UTC)
darkan-fin	Ready	Preview, Comment	Feb 10, 2026 5:30am

[Copilot]

Pull request overview

Adds a GitHub Actions workflow to run frontend linting, type-checking, unit tests, and upload coverage on pushes/PRs targeting main and dev.

Changes:

• Introduces a CI job matrix to test on Node.js 18 and 20.
• Runs lint, typecheck, and test:ci scripts.
• Uploads Jest coverage output to Codecov.

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[Copilot]

The workflow uses npm ci and cache: "npm", but the repo has a yarn.lock and no package-lock.json, so this job will fail (npm ci requires a lockfile). Align the workflow with the repo’s package manager (e.g., switch to Yarn with cache: "yarn" and yarn install --frozen-lockfile, or commit a package-lock.json and keep npm).

Suggested change

	cache: "npm"
	- name: Install dependencies
	run: npm ci
	- name: Run linting
	run: npm run lint
	- name: Run type checking
	run: npm run typecheck
	- name: Run tests with coverage
	run: npm run test:ci
	cache: "yarn"
	- name: Install dependencies
	run: yarn install --frozen-lockfile
	- name: Run linting
	run: yarn lint
	- name: Run type checking
	run: yarn typecheck
	- name: Run tests with coverage
	run: yarn test:ci

[Copilot]

Consider adding an explicit permissions: block (e.g., contents: read) to follow least-privilege defaults for this workflow, since it only needs to checkout and run tests/upload coverage.