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/model/orchestrator/error/orchestrator-error.ts

@@ -0,0 +1,15 @@
+import OrchestratorLogger from '../services/core/orchestrator-logger';
+import * as core from '@actions/core';
+import Orchestrator from '../orchestrator';
+import OrchestratorSecret from '../options/orchestrator-secret';
+import BuildParameters from '../../build-parameters';
+
+export class OrchestratorError {
+  public static async handleException(error: unknown, buildParameters: BuildParameters, secrets: OrchestratorSecret[]) {
+    OrchestratorLogger.error(JSON.stringify(error, undefined, 4));
+    core.setFailed('Orchestrator failed');
+    if (Orchestrator.Provider !== undefined) {
+      await Orchestrator.Provider.cleanupWorkflow(buildParameters, buildParameters.branch, secrets);
+    }
+  }
+}