feat: add learner intent xpert api endpoint

enterprise_access/apps/api/serializers/__init__.py

@@ -37,6 +37,7 @@
     TransactionResponseSerializer,
     TransactionsListResponseSerializer
 )
+from .learner_pathways import LearningIntentRequestSerializer, LearningIntentResponseSerializer
 from .provisioning import (
     ProvisioningRequestSerializer,
     ProvisioningResponseSerializer,

enterprise_access/apps/api/serializers/learner_pathways.py

@@ -0,0 +1,38 @@
+"""
+Request and documentation-only response serializers for the Learner Pathways API.
+"""
+from rest_framework import serializers
+
+LEARNER_PATHWAYS_API_TAG = 'Learner Pathways'
+
+
+class LearningIntentRequestSerializer(serializers.Serializer):
+    """
+    Validates the request body for the learning-intent endpoint.
+    """
+    selected_goals = serializers.CharField(allow_blank=False)
+    free_text = serializers.CharField(allow_blank=False)
+    known_context = serializers.CharField(allow_blank=False)
+
+    def create(self, validated_data):
+        return validated_data
+
+    def update(self, instance, validated_data):
+        return validated_data
+
+
+class LearningIntentResponseSerializer(serializers.Serializer):
+    """
+    Documents the expected HTTP 200 response shape for the learning-intent endpoint.
+
+    For OpenAPI schema generation only — never instantiated at runtime.
+    """
+    skills_required = serializers.ListField(child=serializers.CharField())
+    skills_preferred = serializers.ListField(child=serializers.CharField())
+    condensed_algolia_query = serializers.CharField()
+
+    def create(self, validated_data):
+        return validated_data
+
+    def update(self, instance, validated_data):
+        return validated_data