flowgraph/tasks/reactive-and-hosts.md

id, name, status, depends_on, scope, risk, impact, level

id	name	status	depends_on	scope	risk	impact	level
review/reactive-and-hosts	Review reactive execution and host configs — signal graph, preconditions, HostConfig implementations	completed	reactive/workflow-root reactive/node-status reactive/max-concurrency reactive/retry-semantics host/graphology host/reactive component/operation component/sequential component/parallel component/conditional component/map review/foundation	broad	medium	phase	review

Description

Review the reactive execution layer and host config implementations before final integration. Verify signal-backed state management is correct, preconditions drive proper state transitions, failure propagation follows dependency edges, and both HostConfig implementations render templates correctly.

Acceptance Criteria

• WorkflowReactiveRoot initializes signals correctly for all DAG nodes
• EventLogProjection correctly derives status and results from event log per ADR-005
• Computed preconditions: correct for Sequential, Parallel, Conditional, and join scenarios
• blockedByFailure: correctly propagates failures along dependency edges, NOT structural scope
• GraphologyHostConfig: Sequential → sequential edges, Parallel → no inter-child edges, Conditional → conditional edges with dataFlow
• ReactiveHostConfig: creates WorkflowNodes with correct signal references
• Conditional as error boundary: then-branch skipped, else-branch activated, downstream sees completed
• maxConcurrency semaphore limits parallel starts correctly
• Retry semantics: new requestId, projection reflects latest attempt
• dispose() cleans up all signals and effects — no leaks
• All tests pass: npm test
• TypeScript strict mode compilation succeeds: npx tsc --noEmit

References

• docs/architecture/reactive-execution.md, docs/architecture/host-configs.md, docs/architecture/workflow-templates.md

Notes

To be filled by implementation agent

Summary

To be filled on completion