Update mcp tool universe

Add rag utility

test-data/docs/syntax_guide.md

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+# DSL Syntax Guide: DiagnosticService
+
+To define a diagnostic service in the OTX/ODX abstraction layer, use the `DiagnosticService` keyword.
+
+## Syntax
+```dsl
+DiagnosticService <ServiceName> {
+    request: <HexCode>
+    response: <HexCode>
+    timeout: <Integer> ms
+}
+```
+
+## Rules
+* The service name must be UpperCamelCase.
+* Timeouts are strictly defined in milliseconds.
+* Use the `extends` keyword to inherit properties from a base service.