Add e2e test for invalid PSBT upload

[harrshita123]

Test / Quality improvement (E2E test)

Fixes #442

This PR adds an end-to-end test to validate Caravan’s behavior when an invalid PSBT file is uploaded.

The test ensures that:

• Uploading an invalid PSBT triggers a visible error alert
• The transaction signing flow is blocked for invalid PSBT inputs

This improves test coverage and prevents regressions related to PSBT validation.

• I have tested my changes thoroughly.

• I have added tests to cover my changes.

• I have run the test suite locally, and all tests pass.

• I have written tests for all new changes/features.

• I have followed the project's coding style and conventions.

• Added E2E test in:
  apps/coordinator/e2e/tests/03-transaction_flow.spec.ts

• Verified locally using npm run test:e2e

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Project	Deployment	Actions	Updated (UTC)
caravan-coordinator	Ready	Preview, Comment	Feb 21, 2026 9:39pm

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Latest commit: 9064ec8

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[Legend101Zz]

Just a nit , rest looks good to me thanks for the PR , can you also please attach a screen shot showing the playwright running the test , would be really helpful thanks

[Legend101Zz]

actually we don't need a changeset for this , changeset it for packages and coordinator version , we don't it for e2e test suite ... @bucko13 please correct me if I am wrong here :)

[harrshita123]

actually we don't need a changeset for this , changeset it for packages and coordinator version , we don't it for e2e test suite ... @bucko13 please correct me if I am wrong here :)

Thanks for the review and the helpful suggestion!

You are absolutely right . since this change only adds an end-to-end test and does not modify any package code or affect the coordinator version, a changeset isn’t required. I have removed the changeset file accordingly.

I have also attached a screenshot of the Playwright test suite running locally (npm run test:e2e) showing all tests passing, including the newly added invalid PSBT test.

please let me know if there is anything else I should improve!

[harrshita123]

actually we don't need a changeset for this , changeset it for packages and coordinator version , we don't it for e2e test suite ... @bucko13 please correct me if I am wrong here :)

@Legend101Zz

Thanks for the review and the helpful suggestion!

You are absolutely right . since this change only adds an end-to-end test and does not modify any package code or affect the coordinator version, a changeset isn’t required. I have removed the changeset file accordingly.

I have also attached a screenshot of the Playwright test suite running locally (npm run test:e2e) showing all tests passing, including the newly added invalid PSBT test.

please let me know if there is anything else I should improve!

[Legend101Zz]

Thanks @harrshita123 everything looks good to me :)

[harrshita123]

[Legend101Zz]

LGTM