diff --git a/backend/.claude/settings.local.json b/backend/.claude/settings.local.json
new file mode 100644
index 00000000..c0d67991
--- /dev/null
+++ b/backend/.claude/settings.local.json
@@ -0,0 +1,11 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(git add:*)",
+      "Bash(git commit:*)",
+      "Bash(git push:*)"
+    ],
+    "deny": [],
+    "ask": []
+  }
+}
diff --git a/backend/mpc-system/Makefile b/backend/mpc-system/Makefile
index f8992db2..a56f6be6 100644
--- a/backend/mpc-system/Makefile
+++ b/backend/mpc-system/Makefile
@@ -37,7 +37,11 @@ init: ## Initialize the project (install tools)
 
 proto: ## Generate protobuf code
 	@echo "Generating protobuf..."
-	$(PROTOC) --go_out=. --go-grpc_out=. api/proto/*.proto
+	@mkdir -p api/grpc/coordinator/v1
+	@mkdir -p api/grpc/router/v1
+	$(PROTOC) --go_out=. --go_opt=paths=source_relative \
+		--go-grpc_out=. --go-grpc_opt=paths=source_relative \
+		api/proto/*.proto
 	@echo "Protobuf generated successfully!"
 
 fmt: ## Format Go code