redesign fully scaffolded and web login works

client-py/config.example.yaml

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+# Example configuration file for DexOrder user container
+# Mount this at /app/config/config.yaml in k8s
+
+# User-specific settings
+user:
+  timezone: "UTC"
+
+# Data sources
+data:
+  iceberg:
+    catalog_name: "dexorder"
+    # Catalog properties loaded from secrets
+
+  relay:
+    endpoint: "tcp://relay:5560"
+    timeout_ms: 5000
+
+# Strategy settings
+strategies:
+  max_concurrent: 5
+  default_timeout_minutes: 60
+
+# Alert settings
+alerts:
+  max_active: 100
+
+# Logging
+logging:
+  level: "INFO"
+  include_timestamps: true