table structure docs are made

common/Makefile

@@ -0,0 +1,11 @@
+DOC_OUT := docs/grpc_reference.html
+
+.PHONY: docs
+
+docs:
+	@echo "Generating gRPC documentation..."
+	mkdir -p $(dir $(DOC_OUT))
+	protoc \
+	  --doc_out=html,index.html:$(dir $(DOC_OUT)) \
+	  --proto_path=proto proto/*.proto
+	@echo "✅ Docs written to $(DOC_OUT)"