fix: pin hatchet sdk version

[yamijuan]

Summary

• Pin hatchet-sdk==1.22.16 to fix KeyError: detect_chunk_topic in topic detection

Problem

The detect_topics step in the multitrack pipeline fails every time with:

KeyError: <TaskName.DETECT_CHUNK_TOPIC: 'detect_chunk_topic'>

This was caused by the hatchet-sdk upgrade from 1.21.6 → 1.27.0 (via dependabot in #886).

Root Cause

In v1.23.0, the hatchet SDK renamed protobuf fields in its gRPC contract:

	v1.22.x (old)	v1.23.0+ (new)
Result key field	result.stepReadableId	result.task_name
Run ID field	workflowRunId	workflow_run_id

The SDK was upgraded but our hatchet server still uses the old protobuf schema. So when aio_run_many() returns child workflow results, the new SDK reads result.task_name (empty string from old server) instead of result.stepReadableId (which has the actual task name). This produces an empty result dict, causing the KeyError on every lookup.

Fix

Pin hatchet-sdk==1.22.16 — the latest version compatible with our current hatchet server. All APIs used by our code (workflow(), .task(), aio_run_many(), create_bulk_run_item(), ctx.task_output()) are present and unchanged in 1.22.16.

Future

To upgrade past 1.22.16, the hatchet server must be upgraded first to a version that serves the new protobuf field names.