```

chore: remove obsolete payment architecture and integration test documentation

- Remove AITBC_PAYMENT_ARCHITECTURE.md (dual-currency system documentation)
- Remove IMPLEMENTATION_COMPLETE_SUMMARY.md (integration test completion summary)
- Remove INTEGRATION_TEST_FIXES.md (test fixes documentation)
- Remove INTEGRATION_TEST_UPDATES.md (real features implementation notes)
- Remove PAYMENT_INTEGRATION_COMPLETE.md (wallet-coordinator integration docs)
- Remove WALLET_COORDINATOR_INTEGRATION.md (payment

pytest.ini

@@ -0,0 +1,26 @@
+[tool:pytest]
+# pytest configuration for AITBC
+
+# Test discovery
+python_files = test_*.py *_test.py
+python_classes = Test*
+python_functions = test_*
+
+# Custom markers
+markers =
+    unit: Unit tests (fast, isolated)
+    integration: Integration tests (may require external services)
+    slow: Slow running tests
+
+# Additional options for local testing
+addopts = 
+    --verbose
+    --tb=short
+
+# Warnings
+filterwarnings =
+    ignore::UserWarning
+    ignore::DeprecationWarning
+    ignore::PendingDeprecationWarning
+    ignore::pytest.PytestUnknownMarkWarning
+    ignore::pydantic.PydanticDeprecatedSince20