Propagate web-search cancellation

scripts/release-check

@@ -170,12 +170,28 @@ if (actual !== expected) process.exit(1);
 const serverPath = "/usr/local/lib/node_modules/@zhafron/mcp-web-search/dist/src/server.js";
 const server = fs.readFileSync(serverPath, "utf8");
 if (!server.includes("max_download_bytes: z.number().int().min(1).max(MAX_BYTES).optional()")) process.exit(1);
+if (!server.includes("provider, signal)")) process.exit(1);
+if (!server.includes("max_download_bytes,\n        signal")) process.exit(1);
 
 const bingPath = "/usr/local/lib/node_modules/@zhafron/mcp-web-search/dist/src/providers/bing.js";
 const bing = fs.readFileSync(bingPath, "utf8");
 if (!bing.includes("Context Kit override for @zhafron/mcp-web-search 1.3.0")) process.exit(1);
 if (!bing.includes("waitForSelector")) process.exit(1);
 if (!bing.includes("decodeBingRedirect")) process.exit(1);
+' >/dev/null
+
+  docker run --rm --entrypoint /opt/mcp-proxy/bin/python \
+    "${CONTEXT_KIT_WEB_SEARCH_IMAGE}" \
+    -c '
+from pathlib import Path
+
+root = Path("/opt/mcp-proxy/lib/python3.11/site-packages")
+session = (root / "mcp/shared/session.py").read_text()
+proxy = (root / "mcp_proxy/proxy_server.py").read_text()
+transport = (root / "mcp/client/streamable_http.py").read_text()
+assert "Context Kit: forward cancellation" in session
+assert "downstream client disconnected" in proxy
+assert "_request_cancel_scopes" in transport
 ' >/dev/null
 
   docker run --rm --entrypoint /usr/bin/test \
@@ -249,6 +265,7 @@ assert_web_search_backend_supervision() {
 git diff --check HEAD
 git show --check --format= HEAD >/dev/null
 git ls-files --cached --error-unmatch \
+  docker/web-search/patch-mcp-proxy.py \
   docker/web-search/patch-mcp-web-search.mjs \
   docker/web-search/overrides/bing.js \
   docker/docs/constraints.txt \
@@ -258,7 +275,10 @@ git ls-files --cached --error-unmatch \
   scripts/smoke-repomix.mjs \
   scripts/test-compose-upgrade.sh \
   scripts/test-lifecycle.sh \
+  scripts/test-web-search-candidate.sh \
   scripts/test-web-search-http.mjs \
+  scripts/test-web-search-quality.mjs \
+  scripts/test-web-search-stdio-cancellation.mjs \
   docker/web-search/mcp-probe.mjs \
   docker/web-search/http-entrypoint.mjs \
   scripts/release-check >/dev/null
@@ -267,7 +287,8 @@ bash -n scripts/release-check
 bash -n scripts/test-compose-upgrade.sh
 bash -n scripts/test-lifecycle.sh
 sh -n docker/docs/entrypoint.sh
-check_node docker/web-search/patch-mcp-web-search.mjs docker/web-search/overrides/bing.js docker/web-search/overrides/brave.js docker/web-search/overrides/browser-fetch.js docker/web-search/overrides/registry.js docker/web-search/mcp-probe.mjs docker/web-search/http-entrypoint.mjs scripts/docs-rebuild.mjs scripts/mcp-smoke-client.mjs scripts/smoke-web-search.mjs scripts/smoke-docs.mjs scripts/smoke-repomix.mjs scripts/test-docs-candidate.mjs scripts/test-web-search-candidate.mjs scripts/test-web-search-http.mjs scripts/test-web-search-quality.mjs
+check_node docker/web-search/patch-mcp-web-search.mjs docker/web-search/overrides/bing.js docker/web-search/overrides/brave.js docker/web-search/overrides/browser-fetch.js docker/web-search/overrides/registry.js docker/web-search/mcp-probe.mjs docker/web-search/http-entrypoint.mjs scripts/docs-rebuild.mjs scripts/mcp-smoke-client.mjs scripts/smoke-web-search.mjs scripts/smoke-docs.mjs scripts/smoke-repomix.mjs scripts/test-docs-candidate.mjs scripts/test-web-search-candidate.mjs scripts/test-web-search-http.mjs scripts/test-web-search-quality.mjs scripts/test-web-search-stdio-cancellation.mjs scripts/fixtures/web/mock-server.mjs
+python3 -c 'import ast, pathlib; ast.parse(pathlib.Path("docker/web-search/patch-mcp-proxy.py").read_text())'
 
 node -e 'const fs=require("node:fs"); JSON.parse(fs.readFileSync("snippets/opencode.json", "utf8")); JSON.parse(fs.readFileSync("snippets/claude.mcp.json", "utf8"));'
 CONTEXT_KIT_WEB_SEARCH_HTTP_URL="http://127.0.0.1:8777/mcp" CONTEXT_KIT_DOCS_HTTP_URL="http://127.0.0.1:8776/mcp" bin/context-kit install opencode > "${tmp_dir}/opencode-default.json"