Define the report-title attribute in action definition

Fixes missing attribute from PR #568

.github/instructions/test-reporter.instructions.md

@@ -1,15 +0,0 @@
----
-applyTo: '**'
----
-
-Instructions:
-
-  - Ensure Node.js 20 is installed and used for all development and CI tasks.
-  - Do not update the Node.js runtime to versions newer than 20.
-  - Install all dependencies using `npm install`.
-  - Use TypeScript for all source code; ensure `tsconfig.json` is present and configured.
-  - Use `npm test` to run tests; ensure all tests pass before committing changes.
-  - Validate changes by running `npm run all` before submitting pull requests or merging.
-  - This project is a GitHub Actions action; ensure compatibility with GitHub Actions workflows.
-  - After validating changes, create a new commit with the `dist/` directory included.
-  - Document any changes to the action's inputs, outputs, or behavior in the README.

action.yml

@@ -68,6 +68,10 @@ inputs:
   working-directory:
     description: Relative path under $GITHUB_WORKSPACE where the repository was checked out
     required: false
+  report-title:
+    description: Title for the test report summary
+    required: false
+    default: ''
   only-summary:
     description: |
       Allows you to generate only the summary.