Move server modules into server/ package

data_model, log_config, network, storage_helpers, we_connect are now
under server/. collect.py stays in the project root and imports via
the server package.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/log_config.py

@@ -0,0 +1,8 @@
+import logging
+
+
+def setup(verbose: bool) -> None:
+    logging.basicConfig(
+        level=logging.DEBUG if verbose else logging.INFO,
+        format="%(asctime)s %(levelname)s %(message)s",
+    )