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/go_worker_pool/PROJECT_META.md

@@ -0,0 +1,9 @@
+# go_worker_pool
+
+- stack: go
+- validator: go test ./...
+- common_failure_modes: dependency order, wrong package path, nil handling
+
+## Scope
+
+Small representative project for training data generation.