Structure data diagnosis service (#518)

* Import flow tech spec

* Structured diag service

* Plumbed into API gateway

* Type detector

* Diag service

* Added entry point

trustgraph-base/trustgraph/schema/services/__init__.py

@@ -9,4 +9,5 @@ from .library import *
 from .lookup import *
 from .nlp_query import *
 from .structured_query import *
-from .objects_query import *
+from .objects_query import *
+from .diagnosis import *

trustgraph-base/trustgraph/schema/services/diagnosis.py

@@ -0,0 +1,30 @@
+from pulsar.schema import Record, String, Map, Double
+from ..core.primitives import Error
+
+############################################################################
+
+# Structured data diagnosis services
+
+class StructuredDataDiagnosisRequest(Record):
+    operation = String()  # "detect-type", "generate-descriptor", or "diagnose"
+    sample = String()     # Data sample to analyze (text content)
+    type = String()       # Data type (csv, json, xml) - optional, required for generate-descriptor
+    schema_name = String() # Target schema name for descriptor generation - optional
+
+    # JSON encoded options (e.g., delimiter for CSV)
+    options = Map(String())
+
+class StructuredDataDiagnosisResponse(Record):
+    error = Error()
+
+    operation = String()         # The operation that was performed
+    detected_type = String()     # Detected data type (for detect-type/diagnose) - optional
+    confidence = Double()        # Confidence score for type detection - optional
+
+    # JSON encoded descriptor (for generate-descriptor/diagnose) - optional
+    descriptor = String()
+
+    # JSON encoded additional metadata (e.g., field count, sample records)
+    metadata = Map(String())
+
+############################################################################