```

chore: refactor logging module, update genesis timestamp, remove model relationships, and reorganize routers

- Rename logging.py to logger.py and update import paths in poa.py and main.py
- Update devnet genesis timestamp to 1766828620
- Remove SQLModel Relationship declarations from Block, Transaction, and Receipt models
- Add SessionDep type alias and get_session dependency in coordinator-api deps
- Reorganize coordinator-api routers: replace explorer/registry with exchange, users, marketplace

assets/tailwind.config.js

@@ -0,0 +1,13 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: [
+    "./apps/trade-exchange/index.html",
+    "./apps/marketplace-ui/index.html",
+    "./website/*.html"
+  ],
+  darkMode: 'class',
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}