feat(ide): add browser VS Code for course notebooks

ide/Dockerfile

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+# Compose передаёт результат сборки jupyter через additional_contexts.
+FROM jupyter-runtime
+
+USER root
+ARG CODE_SERVER_VERSION=4.141.0
+ARG PYTHON_EXTENSION_VERSION=2026.4.0
+ARG JUPYTER_EXTENSION_VERSION=2025.9.1
+
+# Контрольные суммы .deb из выпуска code-server v4.141.0.
+RUN set -eux; \
+    arch="$(dpkg --print-architecture)"; \
+    case "$arch" in \
+      amd64) checksum=f384beb4f3ba207e0bca27d0dbd36dd825d5aa909d78c6d4baa8703eaf6b77ba ;; \
+      arm64) checksum=0bca33a9b01180ad88f0b8969a8e34ae1c76417df471697e7cd65c20ef5dd60d ;; \
+      *) echo "Unsupported architecture: $arch" >&2; exit 1 ;; \
+    esac; \
+    curl -fL --retry 3 \
+      "https://github.com/coder/code-server/releases/download/v${CODE_SERVER_VERSION}/code-server_${CODE_SERVER_VERSION}_${arch}.deb" \
+      -o /tmp/code-server.deb; \
+    echo "$checksum  /tmp/code-server.deb" | sha256sum -c -; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends /tmp/code-server.deb; \
+    rm -rf /tmp/code-server.deb /var/lib/apt/lists/*
+
+USER jovyan
+ENV HOME=/home/jovyan
+RUN code-server --install-extension "ms-python.python@${PYTHON_EXTENSION_VERSION}" \
+ && code-server --install-extension "ms-toolsai.jupyter@${JUPYTER_EXTENSION_VERSION}"
+
+COPY lakehouse.code-workspace /opt/lakehouse.code-workspace
+COPY --chown=jovyan settings.json /home/jovyan/.local/share/code-server/User/settings.json
+EXPOSE 8889
+CMD ["code-server", "--bind-addr", "0.0.0.0:8889", "--auth", "none", \
+     "--disable-telemetry", "--disable-update-check", \
+     "/opt/lakehouse.code-workspace"]

ide/lakehouse.code-workspace

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+{
+  "folders": [
+    { "name": "Ноутбуки", "path": "/opt/course/notebooks" },
+    { "name": "Примеры (только чтение)", "path": "/opt/course/src" },
+    { "name": "Документация (только чтение)", "path": "/opt/course/docs" }
+  ],
+  "settings": {
+    "python.defaultInterpreterPath": "/usr/bin/python3"
+  }
+}

ide/settings.json

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+{
+  "extensions.autoUpdate": false,
+  "extensions.autoCheckUpdates": false,
+  "telemetry.telemetryLevel": "off",
+  "workbench.startupEditor": "none",
+  "chat.disableAIFeatures": true,
+  "workbench.secondarySideBar.defaultVisibility": "hidden"
+}