Uint8Array no longer crashes wrangler dev Workflows

Patch Changes

• #14134 262dfc2 Thanks @matingathani! - Fix wrangler dev Workflows crashing with SQLITE_TOOBIG when a step returns a large Uint8Array

  JSON.stringify encodes each byte of a Uint8Array as a separate numeric key ({"0":1,"1":2,...}), producing a string ~10× larger than the array's byte length. A 200 KB Uint8Array became a ~2 MB JSON string that exceeded SQLite's blob limit, crashing the Workflow step. The same bytes returned as an ArrayBuffer succeeded because JSON.stringify(ArrayBuffer) → {}.

  The step log metadata (used by the local Workflows explorer) now stores a human-readable description for TypedArray and ArrayBuffer outputs ([Uint8Array(200000 bytes)]) instead of attempting to JSON-serialise the raw bytes. The actual step value is unaffected — it is preserved in Durable Object key-value storage via structured clone for replay by subsequent steps.