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/node_api_gateway/PROJECT_META.md

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+# node_api_gateway
+
+- stack: node
+- validator: node test/server.test.js
+- common_failure_modes: route mismatch, status/body drift, invalid json
+
+## Scope
+
+Small representative project for training data generation.