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-map.md

@@ -0,0 +1,39 @@
+---
+id: component/map
+name: Implement <Map> ujsx component
+status: pending
+depends_on:
+  - schema/edge-attrs
+  - setup/project-init
+scope: narrow
+risk: low
+impact: component
+level: implementation
+---
+
+## Description
+
+Implement the `Map` ujsx component function. Represents mapping over an array — creates one child instance per array item. Structurally equivalent to a dynamically-generated Parallel group.
+
+## Acceptance Criteria
+
+- [ ] `src/component/map.ts` exports `Map` component function
+- [ ] `Map` produces `UElement` with `type: "map"`
+- [ ] Props: `over: Signal<unknown[]> | unknown[] | ((results: Record<string, CallResult>) => unknown[])` (required), `as: string` (required), `children: UNode` (required — template rendered per item)
+- [ ] The `as` prop names the variable each item is bound to
+- [ ] Aggregate completion semantics: all mapped nodes must reach satisfying terminal state for Map to be "completed"; any failed/aborted child makes Map failed/aborted
+- [ ] Re-exported from `src/component/index.ts`
+- [ ] Unit tests: correct UElement shape with each over form (static, function), as prop preserved
+
+## References
+
+- docs/architecture/workflow-templates.md — Map component, aggregate completion semantics, edge type
+- docs/architecture/reactive-execution.md — Map reactive behavior, maxConcurrency interaction
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion