Rename Cloud Runner to Orchestrator (#775)

* Rename "Cloud Runner" to "Orchestrator" across entire codebase

Breaking change: All CloudRunner classes, options, environment variables,
and action.yml inputs have been renamed to Orchestrator equivalents.

- Renamed src/model/cloud-runner/ directory to src/model/orchestrator/
- Renamed all cloud-runner-* files to orchestrator-*
- Renamed all CloudRunner* classes to Orchestrator* (15+ classes)
- Renamed all cloudRunner* properties to orchestrator* equivalents
- Renamed CLOUD_RUNNER_* env vars to ORCHESTRATOR_*
- Updated action.yml [CloudRunner] markers to [Orchestrator]
- Updated workflow files and package.json test scripts
- Updated all runtime strings (cache paths, log messages, branch refs)
- Rebuilt dist/index.js

No backward compatibility layer is provided.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Remove tracked log/temp files and add to .gitignore

Remove $LOG_FILE and temp/job-log.txt debug artifacts that should
not be in the repository.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/integration/orchestrator-github-checks-integration-test.ts

@@ -0,0 +1,29 @@
+// Integration test for exercising real GitHub check creation and updates.
+import Orchestrator from '../model/orchestrator/orchestrator';
+import UnityVersioning from '../model/unity-versioning';
+import GitHub from '../model/github';
+import { TIMEOUT_INFINITE, createParameters } from '../test-utils/orchestrator-test-helpers';
+
+const runIntegration = process.env.RUN_GITHUB_INTEGRATION_TESTS === 'true';
+const describeOrSkip = runIntegration ? describe : describe.skip;
+
+describeOrSkip('Orchestrator Github Checks Integration', () => {
+  it(
+    'creates and updates a real GitHub check',
+    async () => {
+      const buildParameter = await createParameters({
+        versioning: 'None',
+        projectPath: 'test-project',
+        unityVersion: UnityVersioning.read('test-project'),
+        asyncOrchestrator: `true`,
+        githubChecks: `true`,
+      });
+      await Orchestrator.setup(buildParameter);
+      const checkId = await GitHub.createGitHubCheck(`integration create`);
+      expect(checkId).not.toEqual('');
+      await GitHub.updateGitHubCheck(`1 ${new Date().toISOString()}`, `integration`);
+      await GitHub.updateGitHubCheck(`2 ${new Date().toISOString()}`, `integration`, `success`, `completed`);
+    },
+    TIMEOUT_INFINITE,
+  );
+});