[reeceyang]

When a step result exceeds 800 KiB, preserve the full value in file storage before recording the step failure. The blob, oversized-value record, and failed step commit in the same mutation, so the value is immediately available and storage cannot race with workflow cleanup.

Add paginated oversizedValues.list and mutation-based read/remove APIs, preserve Convex values through JSON encoding, and delete stored values during workflow cleanup. Retrieve a value with ctx.runMutation(components.workflow.oversizedValues.read, { stepId }). Oversized arguments remain unsupported.

This standalone prototype includes the oversized-value storage work from #242 and uses mutation file storage directly. It targets main and does not depend on #242. Development dependencies use convex@0ddad53 and convex-test@166 from pkg.pr.new; convex-test provides native mutation-storage support, with no syscall adapter.

Validation:

• All 130 tests, build, and TypeScript checks pass. Lint has no errors and three existing warnings.
• Live dev-deployment checks pass for full 900 KB action results, events sent before and after waiting, storage/removal rollback, idempotent removal, and workflow cleanup.
• The standalone probe verifies reads from mutations and actions plus HTTP 200 downloads. Test storage is empty after cleanup.

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@convex-dev/workflow@310

commit: b374fd7