- Implemented `DagScheduler` in `workflow-orchestrator` to manage task dependencies and commit history.
- Added `vgcs.merge_commits` in `workflow-context` for smart 3-way merge of parallel task branches.
- Introduced generic `WorkflowTaskCommand` and `WorkflowTaskEvent` in `common-contracts`.
- Adapted `tushare-provider-service` with `generic_worker` to support Git-based context read/write.
- Updated NATS subjects to support wildcard routing for generic workflow commands.
