Propagate web-search cancellation

docker/web-search/Dockerfile

@@ -3,6 +3,7 @@ FROM node:22-bookworm-slim@sha256:813a7480f28fdadac1f7f5c824bcdad435b5bc1322a596
 ARG MCP_WEB_SEARCH_VERSION=1.3.0
 ARG MCP_WEB_SEARCH_MAX_BYTES=52428800
 ARG MCP_PROXY_VERSION=0.12.0
+ARG MCP_PYTHON_SDK_VERSION=1.28.1
 
 # Chromium intentionally tracks Debian security updates inside the pinned base
 # image family; Bing's browser path is more likely to break with stale Chromium
@@ -15,8 +16,13 @@ RUN apt-get update \
     python3-venv \
   && rm -rf /var/lib/apt/lists/*
 
+COPY patch-mcp-proxy.py /tmp/patch-mcp-proxy.py
+
 RUN python3 -m venv /opt/mcp-proxy \
-  && /opt/mcp-proxy/bin/pip install --no-cache-dir "mcp-proxy==${MCP_PROXY_VERSION}" \
+  && /opt/mcp-proxy/bin/pip install --no-cache-dir \
+    "mcp-proxy==${MCP_PROXY_VERSION}" \
+    "mcp==${MCP_PYTHON_SDK_VERSION}" \
+  && /opt/mcp-proxy/bin/python /tmp/patch-mcp-proxy.py \
   && /opt/mcp-proxy/bin/mcp-proxy --version
 
 COPY patch-mcp-web-search.mjs /tmp/patch-mcp-web-search.mjs
@@ -35,7 +41,7 @@ RUN npm install -g "@zhafron/mcp-web-search@${MCP_WEB_SEARCH_VERSION}" \
   && cp /tmp/context-kit-fetch/browser-fetch.js /usr/local/lib/node_modules/@zhafron/mcp-web-search/dist/src/fetch/browser.js \
   && cp /tmp/context-kit-fetch/bounds.mjs /usr/local/lib/node_modules/@zhafron/mcp-web-search/dist/src/fetch/bounds.js \
   && node /tmp/patch-mcp-web-search.mjs \
-  && rm -rf /tmp/patch-mcp-web-search.mjs /tmp/context-kit-bing-provider.js /tmp/context-kit-providers /tmp/context-kit-fetch \
+  && rm -rf /tmp/patch-mcp-proxy.py /tmp/patch-mcp-web-search.mjs /tmp/context-kit-bing-provider.js /tmp/context-kit-providers /tmp/context-kit-fetch \
   && npm cache clean --force
 
 RUN chmod -R a+rX /usr/local/lib/context-kit \