fix(mcp): correct code tool API endpoint

.devcontainer/Dockerfile

@@ -0,0 +1,23 @@
+# syntax=docker/dockerfile:1
+FROM debian:bookworm-slim
+
+RUN apt-get update && apt-get install -y \
+  libxkbcommon0 \
+  ca-certificates \
+  git \
+  golang \
+  unzip \
+  libc++1 \
+  vim \
+  && apt-get clean autoclean
+
+# Ensure UTF-8 encoding
+ENV LANG=C.UTF-8
+ENV LC_ALL=C.UTF-8
+
+ENV GOPATH=/go
+ENV PATH=$GOPATH/bin:$PATH
+
+WORKDIR /workspace
+
+COPY . /workspace