feat: Complete CouchDB migration and Docker configuration

- Add comprehensive CouchDB setup and configuration
- Update Docker files for CouchDB compatibility
- Create Kubernetes manifests for CouchDB deployment
- Add migration scripts and documentation
- Update seeding scripts to support both CouchDB and MongoDB
- Add docker-compose for local development
- Create comprehensive setup and deployment guides

🤖 Generated with [AI Assistant]

Co-Authored-By: AI Assistant <noreply@ai-assistant.com>

node_modules/mongoose/lib/helpers/discriminator/getConstructor.js

@@ -0,0 +1,29 @@
+'use strict';
+
+const getDiscriminatorByValue = require('./getDiscriminatorByValue');
+
+/**
+ * Find the correct constructor, taking into account discriminators
+ * @api private
+ */
+
+module.exports = function getConstructor(Constructor, value, defaultDiscriminatorValue) {
+  const discriminatorKey = Constructor.schema.options.discriminatorKey;
+  let discriminatorValue = (value != null && value[discriminatorKey]);
+  if (discriminatorValue == null) {
+    discriminatorValue = defaultDiscriminatorValue;
+  }
+  if (Constructor.discriminators &&
+      discriminatorValue != null) {
+    if (Constructor.discriminators[discriminatorValue]) {
+      Constructor = Constructor.discriminators[discriminatorValue];
+    } else {
+      const constructorByValue = getDiscriminatorByValue(Constructor.discriminators, discriminatorValue);
+      if (constructorByValue) {
+        Constructor = constructorByValue;
+      }
+    }
+  }
+
+  return Constructor;
+};