decompose architecture into 38 atomic tasks across 12 parallel generations

Decompose the reviewed architecture specs into taskgraph-managed tasks:
- 2 setup tasks (project init, test infrastructure)
- 4 schema tasks (enums, node attrs, edge attrs, graph schemas)
- 1 error hierarchy task
- 6 graph tasks (FlowGraph class, 3 construction paths, queries, validation)
- 5 analysis tasks (type-compat, build-type-edges, ordering, template-validation, defaults)
- 5 component tasks (Operation, Sequential, Parallel, Conditional, Map)
- 2 host config tasks (GraphologyHostConfig, ReactiveHostConfig)
- 4 reactive tasks (WorkflowRoot, node-status, max-concurrency, retry-semantics)
- 3 review tasks (foundation, reactive-and-hosts, complete-library)
- 5 meta cluster tasks (schema, graph, component, reactive, analysis layers)
- 1 API exports task

Validated with taskgraph: zero cycles, 38 tasks, 12 parallel generations.
Critical path: 12 tasks through reactive execution layer.

tasks/component-operation.md

@@ -0,0 +1,38 @@
+---
+id: component/operation
+name: Implement <Operation> ujsx component
+status: pending
+depends_on:
+  - schema/node-attrs
+  - setup/project-init
+scope: single
+risk: low
+impact: component
+level: implementation
+---
+
+## Description
+
+Implement the `Operation` ujsx component function. It's a `UComponent` that produces a `UElement` with `type: "operation"` and workflow-specific props. Operation is a leaf node — it has no children.
+
+## Acceptance Criteria
+
+- [ ] `src/component/operation.ts` exports `Operation` component function
+- [ ] `Operation` produces `UElement` with `type: "operation"`
+- [ ] Props: `name: string` (required), optional `input`, optional `retries: number`, optional `timeout: number`
+- [ ] Operation has no children (leaf node — documented as validation error if children provided)
+- [ ] Re-exported from `src/component/index.ts`
+- [ ] Unit tests: produces correct UElement shape, type guard works
+
+## References
+
+- docs/architecture/workflow-templates.md — Operation component definition, props
+- docs/architecture/host-configs.md — component-to-tag mapping
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion