Fix e2e CI test not running on PRs (#46)

* Fix CLA signatures file format

Replace Markdown with JSON array - CLA Assistant action
expects JSON format for storing signatures.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Fix CLA signatures JSON structure

CLA Assistant expects { "signedContributors": [] } format,
not a plain array.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Remove manually created signatures file

Per CLA Assistant docs: "You do not need to create this file manually.
Our workflow will create the signature file if it does not already exist.
Manually creating this file will cause the workflow to fail."

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Creating file for storing CLA Signatures

* @nhorton has signed the CLA in #27

* @tylerwillis has signed the CLA in #31

* Fix CI workflow to run on all PRs

Remove the `branches: ["*"]` filter from the pull_request trigger.
The glob pattern `*` doesn't match `/`, so PRs targeting branches
with slashes (like feature/...) were not triggering the workflow.

By removing the filter, the workflow now runs on all PRs regardless
of target branch, while still not running on post-merge to main
(since there's no push trigger).

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: 3 people

.github/workflows/validate.yml

@@ -2,7 +2,6 @@ name: Validate
 
 on:
   pull_request:
-    branches: ["*"]
 
 jobs:
   tests: