```

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

README.md

@@ -2,6 +2,23 @@
 
 This repository houses all components of the Artificial Intelligence Token Blockchain (AITBC) stack, including coordinator services, blockchain node, miner daemon, client-facing web apps, SDKs, and documentation.
 
+## Directory Structure
+
+```
+aitbc/
+├── apps/              # Main applications (coordinator-api, blockchain-node, etc.)
+├── packages/          # Shared packages and SDKs
+├── scripts/           # Utility scripts
+│   └── testing/       # Test scripts and utilities
+├── tests/             # Pytest test suites
+├── docs/              # Documentation
+│   ├── guides/        # Development guides
+│   └── reports/       # Generated reports and summaries
+├── infra/             # Infrastructure and deployment configs
+├── dev-utils/         # Development utilities
+└── .windsurf/         # Windsurf IDE configuration
+```
+
 ## Getting Started
 
 1. Review the bootstrap documents under `docs/bootstrap/` to understand stage-specific goals.
@@ -10,3 +27,10 @@ This repository houses all components of the Artificial Intelligence Token Block
 4. Explore the new Python receipt SDK under `packages/py/aitbc-sdk/` for helpers to fetch and verify coordinator receipts (see `docs/run.md` for examples).
 5. Run `scripts/ci/run_python_tests.sh` (via Poetry) to execute coordinator, SDK, miner-node, and wallet-daemon test suites before submitting changes.
 6. GitHub Actions (`.github/workflows/python-tests.yml`) automatically runs the same script on pushes and pull requests targeting `main`.
+
+## Testing
+
+- Test scripts are located in `scripts/testing/`
+- Run individual tests: `python3 scripts/testing/test_block_import.py`
+- Run pytest suite: `pytest tests/`
+- See `docs/guides/WINDSURF_TESTING_GUIDE.md` for detailed testing instructions