[gh-aw] Protected Files: [Autoloop: build-tsb-pandas-typescript-migration] Iteration 387: Add signal processing and digital filters

> [!WARNING]
> **Protected Files**
>
> The push to pull request branch was blocked because the patch modifies protected files.
>
> **Target Pull Request:** [#363](https://github.com/githubnext/tsb/pull/363)
>
> **Please review the changes carefully** before pushing them to the pull request branch. These files may affect project dependencies, CI/CD pipelines, or agent behaviour.
>
>
> Protected files
>
> - [.github/workflows/ci.yml](https://github.com/githubnext/tsb/blob/autoloop/build-tsb-pandas-typescript-migration/.github/workflows/ci.yml)
>
>

---

Apply the patch after review

The patch is available in the workflow run artifacts:

**Workflow Run:** [View run details and download patch artifact](https://github.com/githubnext/tsb/actions/runs/28922782095)

```sh
# Download the artifact from the workflow run
gh run download 28922782095 -n agent -D /tmp/agent-28922782095

# Apply the patch to the pull request branch
git fetch origin autoloop/build-tsb-pandas-typescript-migration
git checkout autoloop/build-tsb-pandas-typescript-migration
git am --3way /tmp/agent-28922782095/aw-autoloop-build-tsb-pandas-typescript-migration.patch
git push origin autoloop/build-tsb-pandas-typescript-migration
```

To route changes like this to a review issue instead of blocking, configure `protected-files: fallback-to-issue` in your workflow configuration.

Start by reviewing pull request #363 and the protected .github/workflows/ci.yml file, then inspect the patch artifact from workflow run 28922782095. The issue does not provide an implementation target or acceptance criteria for the signal-processing and digital-filter work, so completion cannot be determined from this issue alone.

Written by the indexing model from the issue text.