resolve mechanical architecture review issues (C-01,C-02,C-03,W-01,W-09,W-10,W-12)

- C-01: fix broken README link (call-graph-runtime.md → call-graph.md)
- C-02: add CallEdgeAttrs union type alias in schema.md
- C-03/W-12: rename TypedEdgeAttrs → OperationEdgeAttrs for consistent
  {GraphType}EdgeAttrs naming pattern, update all references
- W-01: standardize terminology — prerequisites=structural/graph,
  preconditions=reactive/computed, rename WorkflowNode.prerequisites
  to preconditions, rename computePrerequisites to computePreconditions
- W-09: update ADR-001/002/003 status from Proposed to Accepted
- W-10: clarify call graph mutation API — addCall creates triggered
  edges automatically, addDependency creates depends_on edges
- update review checklist with resolved items

docs/architecture/build-distribution.md

@@ -25,7 +25,7 @@ Package structure, exports map, dependencies, and platform targets.
 │   ├── schema/
 │   │   ├── enums.ts           # CallStatus, EdgeType, NodeCategory, NodeStatus
 │   │   ├── node.ts            # OperationNodeAttrs, CallNodeAttrs
-│   │   ├── edge.ts            # TypedEdgeAttrs, CallEdgeAttrs, TemplateEdgeAttrs
+│   │   ├── edge.ts            # OperationEdgeAttrs, CallEdgeAttrs, TemplateEdgeAttrs
 │   │   ├── graph.ts           # SerializedGraph, FlowGraphSerialized
 │   │   └── index.ts
 │   ├── graph/