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>

.github/workflows/integrity-check.yml

@@ -32,7 +32,7 @@ jobs:
       - run: yarn build || { echo "build command should always succeed" ; exit 61; }
   #      - run: yarn build --quiet && git diff --quiet dist || { echo "dist should be auto generated" ; git diff dist ; exit 62; }
 
-  cloud-runner:
-    name: Cloud Runner Integrity
-    uses: ./.github/workflows/cloud-runner-integrity.yml
+  orchestrator:
+    name: Orchestrator Integrity
+    uses: ./.github/workflows/orchestrator-integrity.yml
     secrets: inherit