fix: non vector db tasks

[evan-onyx]

Description

update list of non vector db tasks and make redis-based locking optional based on task args

How Has This Been Tested?

n/a

Additional Options

• [Optional] Please cherry-pick this PR to the latest release version.
• [Optional] Override Linear Check

---

Summary by cubic

Update the non-vector DB Celery schedule to run migrate-chunks-from-vespa-to-opensearch and remove deprecated document-migration tasks when DISABLE_VECTOR_DB is enabled. Refactor user-file process/delete/project-sync into shared _impl functions with an optional redis_locking flag (Celery=True, background=False), tighten typing and lock handling, and add unit tests for lock behavior, queued-key clearing, and consistent DB logic without Redis.

^{Written for commit 2eae82a. Summary will update on new commits.}

[greptile-apps]

Greptile Summary

This PR cleans up the _VECTOR_DB_BEAT_TASK_NAMES set by removing two deprecated task names (check-for-documents-for-opensearch-migration and migrate-documents-from-vespa-to-opensearch) and adding the current task name (migrate-chunks-from-vespa-to-opensearch).

Changes:

• Removed obsolete task names that were already removed from the actual beat task templates in previous changes
• Added migrate-chunks-from-vespa-to-opensearch which is the actual task defined when ENABLE_OPENSEARCH_INDEXING_FOR_ONYX is enabled
• Ensures the filtering logic for DISABLE_VECTOR_DB works correctly with the current set of tasks

Confidence Score: 5/5

• This PR is safe to merge with no risk
• Simple cleanup that removes stale task names from a set and adds the correct current task name. The change is straightforward, well-scoped, and maintains consistency between the task definitions and the vector DB task list.
• No files require special attention

Important Files Changed

Filename	Overview
backend/onyx/background/celery/tasks/beat_schedule.py	Updated _VECTOR_DB_BEAT_TASK_NAMES set to remove deprecated task names and add current migration task - ensures consistency with actual task definitions

_{Last reviewed commit: b553828}

[cubic-dev-ai]

No issues found across 1 file

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

[github-actions]

Preview Deployment

Status	Preview	Commit	Updated
✅	https://onyx-preview-2xu2t19zx-danswer.vercel.app	6a2d7ab	2026-02-28 03:11:39 UTC

[github-actions]

🖼️ Visual Regression Report

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exclusive	0	0	0	8	✅ No changes