chore: update task statuses completed

tasks/meta-analysis-layer.md

@@ -1,7 +1,7 @@
 ---
 id: meta/analysis-layer
 name: Complete analysis layer — type compatibility, ordering, template/graph validation, defaults
-status: pending
+status: completed
 depends_on:
   - analysis/type-compat
   - analysis/build-type-edges

tasks/meta-graph-layer.md

@@ -1,7 +1,7 @@
 ---
 id: meta/graph-layer
 name: Complete graph layer — FlowGraph class, all construction paths, queries, validation
-status: pending
+status: completed
 depends_on:
   - graph/flowgraph-class
   - graph/construction-operation

tasks/reactive-node-status.md

@@ -1,7 +1,7 @@
 ---
 id: reactive/node-status
 name: Implement node status signal management and computed preconditions + blockedByFailure
-status: pending
+status: completed
 depends_on:
   - reactive/workflow-root
   - schema/enums