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/meta-component-layer.md

@@ -0,0 +1,37 @@
+---
+id: meta/component-layer
+name: Complete component layer — all five ujsx workflow components
+status: pending
+depends_on:
+  - component/operation
+  - component/sequential
+  - component/parallel
+  - component/conditional
+  - component/map
+scope: moderate
+risk: low
+impact: component
+level: planning
+---
+
+## Description
+
+Meta task that clusters all ujsx component tasks. Once complete, the `@alkdev/flowgraph/component` sub-path provides all five workflow components for template authoring.
+
+## Acceptance Criteria
+
+- [ ] All component tasks completed
+- [ ] `@alkdev/flowgraph/component` exports Operation, Sequential, Parallel, Conditional, Map
+- [ ] Each component produces correct UElement shape with WorkflowTag type
+
+## References
+
+- docs/architecture/workflow-templates.md
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion