diff --git a/.gitignore b/.gitignore
index 0127ee7..828f237 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,7 +12,6 @@ CLAUDE.local.md
 __pycache__/
 .pytest_cache/
 
-# Local wheel builds (build-local-wheels.sh)
+# Wheel and sdist build output
 /dist/
-/.xbuild/
 /datahub_python_bindings/dist/
diff --git a/build-local-wheels.sh b/build-local-wheels.sh
deleted file mode 100755
index e54b05d..0000000
--- a/build-local-wheels.sh
+++ /dev/null
@@ -1,74 +0,0 @@
-#!/usr/bin/env bash
-#
-# Build portable Linux wheels for this SDK locally, for every architecture, without CI,
-# without root and without a system cross-toolchain.
-#
-#   ./build-local-wheels.sh                 # x86_64 + aarch64 -> dist/
-#   ./build-local-wheels.sh x86_64          # just one
-#   TARGETS="x86_64 aarch64 musl-x86_64" ./build-local-wheels.sh
-#
-# Why this exists: the wheels are the only way to install this SDK today. `pip install
-# intellistream-datahub-sdk` 404s because the publish job in .github/workflows/release.yml
-# is gated on a vX.Y.Z tag and no tag has ever been pushed, so anything that needs the
-# Python bindings — a container image, a colleague's laptop, a demo — has to be handed a
-# built wheel. CI produces them on every push, but only as Actions artifacts, which needs
-# `gh` and access to this private repo.
-#
-# It also fixes a portability trap in the obvious local build. A plain `maturin build`
-# links against the build host's glibc and emits a `linux_x86_64` wheel, which then refuses
-# to install on any older distribution — a wheel built on Fedora 43 (glibc 2.34) will not
-# run on Debian 12 (2.36 is fine, but 2.31 is not) and cannot be uploaded to PyPI at all.
-# Building through zig targets glibc 2.17 and produces a real `manylinux_2_17` wheel, which
-# installs essentially anywhere, and cross-compiles to aarch64 from an x86_64 host as a
-# side effect — so Apple Silicon is covered without an ARM machine.
-#
-# Once the SDK is published to PyPI this script is a convenience rather than the only route.
-set -euo pipefail
-cd "$(dirname "$0")"
-
-TARGETS="${TARGETS:-${*:-x86_64 aarch64}}"
-OUT="${OUT:-$PWD/dist}"
-VENV="${VENV:-$PWD/.xbuild}"
-
-rust_target() {
-  case "$1" in
-    x86_64)      echo x86_64-unknown-linux-gnu ;;
-    aarch64)     echo aarch64-unknown-linux-gnu ;;
-    musl-x86_64) echo x86_64-unknown-linux-musl ;;
-    musl-aarch64) echo aarch64-unknown-linux-musl ;;
-    *)           echo "$1" ;;   # allow a full rust triple
-  esac
-}
-
-command -v rustup >/dev/null || { echo "rustup is required (https://rustup.rs)" >&2; exit 1; }
-
-# maturin + ziglang both come from pip, so this needs no dnf/apt and no sudo.
-if [ ! -x "$VENV/bin/maturin" ]; then
-  echo "==> creating build venv at $VENV"
-  python3 -m venv "$VENV"
-  "$VENV/bin/pip" install --quiet --upgrade pip
-  "$VENV/bin/pip" install --quiet maturin ziglang
-fi
-
-# maturin shells out to a `zig` BINARY, but the pip package only exposes the module, so it
-# reports "Failed to find zig" unless we put a shim on PATH.
-if [ ! -x "$VENV/bin/zig" ]; then
-  printf '#!/bin/sh\nexec %s -m ziglang "$@"\n' "$VENV/bin/python" > "$VENV/bin/zig"
-  chmod +x "$VENV/bin/zig"
-fi
-export PATH="$VENV/bin:$PATH"
-
-mkdir -p "$OUT"
-for t in $TARGETS; do
-  triple=$(rust_target "$t")
-  echo "==> $triple"
-  rustup target add "$triple" >/dev/null
-  (cd datahub_python_bindings && maturin build --release --zig --target "$triple" --out "$OUT")
-done
-
-echo
-echo "wheels in $OUT:"
-ls -1 "$OUT"/*.whl 2>/dev/null || echo "  (none — the build produced nothing)"
-echo
-echo "Sanity-check one before shipping it:"
-echo "  python3 -c \"import zipfile,sys; z=zipfile.ZipFile(sys.argv[1]); print([n for n in z.namelist() if n.endswith('.so')])\" <wheel>"