WIP: stage all uncommitted work — sprints 46-221, graduation headers, specialist fleet, test steps 909-1988

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

example_projects/terraform_vpc_stack/PROJECT_META.md

@@ -0,0 +1,9 @@
+# terraform_vpc_stack
+
+- stack: terraform
+- validator: terraform validate
+- common_failure_modes: resource drift, provider/schema mismatch
+
+## Scope
+
+Small representative project for training data generation.