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/we_connect.py

@@ -0,0 +1,36 @@
+import logging
+import sys
+
+try:
+    from weconnect import weconnect
+except ImportError:
+    print("weconnect is not installed.  Run:  pip install weconnect", file=sys.stderr)
+    sys.exit(1)
+
+log = logging.getLogger(__name__)
+
+
+def connect(username: str, password: str):
+    wc = weconnect.WeConnect(
+        username=username,
+        password=password,
+        updateAfterLogin=False,
+        loginOnInit=True,
+    )
+    wc.login()
+    wc.update()
+    return wc
+
+
+def select_vehicle(wc, vin: str | None):
+    """Return (vehicle, error_message). error_message is None on success."""
+    vehicles = list(wc.vehicles.values())
+    if not vehicles:
+        return None, "No vehicles found in this WeConnect account"
+    if vin:
+        vehicle = next((v for v in vehicles if v.vin.value == vin), None)
+        if not vehicle:
+            available = [v.vin.value for v in vehicles]
+            return None, f"VIN {vin} not found.  Available: {available}"
+        return vehicle, None
+    return vehicles[0], None