spr migrated books, and tester

artery/shunts/__init__.py

@@ -0,0 +1,18 @@
+"""
+Shunts - Fake connectors for testing.
+
+A shunt redirects flow when the real service isn't available.
+Each shunt mimics a vein's interface with configurable responses.
+
+Structure:
+    shunts/<service>/
+    ├── main.py         # FastAPI with config UI
+    ├── depot/
+    │   └── responses.json  # Configurable fake responses
+    └── README.md
+
+Usage:
+    1. Start the shunt instead of the real vein
+    2. Configure responses via the UI or responses.json
+    3. Run tests against the shunt
+"""