test: add ProfileLink component tests (#12)

[amritbej]

Summary

Adds Jest + React Testing Library coverage for the ProfileLink component in the mobile app. This PR verifies that the component renders the correct platform/username information and correctly triggers the onPress callback interaction.

Closes #12

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Type of Change

• Bug fix
• New feature
• Refactor (no functional change)
• UI / Design change
• Tests only
• Documentation
• Infrastructure / DevOps
• Security

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What Changed

• Added apps/mobile/__tests__/ProfileLink.test.tsx
• Added render tests for platform and username text
• Added press interaction test to verify onPress callback execution

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How to Test

1. Run:

   pnpm --filter @devcard/mobile test

2. Verify the ProfileLink test suite passes successfully

3. Confirm render and press interaction assertions execute correctly

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Checklist

• My code follows the project's coding style (pnpm -r run lint passes).
• TypeScript compiles without errors (pnpm -r run typecheck).
• I have added or updated tests for the changes I made.
• All tests pass locally (pnpm -r run test).
• I have updated documentation where necessary.
• No new console.log or debug statements left in the code.
• Breaking changes are documented in this PR description.

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Additional Context

This PR focuses only on adding automated tests for the ProfileLink component and does not modify component behavior.

[ShantKhatri]

Implementation(files under src) files are changed, while the PR is of test. While writing tests, it's recommended that src files should be touched.

[amritbej]

Implementation(files under src) files are changed, while the PR is of test. While writing tests, it's recommended that src files should be touched.

Got it, thanks for pointing that out. The src file changes were made only to support the test setup, but I understand that this PR should remain test-only.

[amritbej]

I noticed that some unrelated implementation and dependency changes were accidentally included in this PR while setting up the tests. , and keep the PR focused only on the "ProfileLink" component tests.

[amritbej]

Hi @ShantKhatri , please merge my pr if there is no issue .. 🙏