Rebuild local Blender WASM environment and recovery evidence

tools/web/build-blender-native.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+"${repo_root}/tools/web/configure-blender-native.sh" "$@"
+source "${repo_root}/tools/web/native-build-env.sh"
+
+build_target="${BLENDER_BUILD_TARGET:-blender}"
+jobs="${BLENDER_BUILD_JOBS:-2}"
+cmake --build "${BLENDER_BUILD_DIR}" --target "${build_target}" --parallel "${jobs}"
+test -x "${BLENDER_BUILD_DIR}/bin/blender"
+
+# Blender's bundled asset-library add-on imports cattrs, while upstream's
+# install rules only copy NumPy, requests, and zstandard. Copy the small
+# pure-Python dependency set into the portable bundle after installation.
+if [[ "${build_target}" == "install" ]]; then
+  bundle_site="${BLENDER_BUILD_DIR}/bin/5.2/python/lib/python3.13/site-packages"
+  source_site="${BLENDER_PYTHON_ROOT}/lib/python3.13/site-packages"
+  mkdir -p "${bundle_site}"
+  for package in cattrs attrs attr cattr; do
+    if [[ -d "${source_site}/${package}" ]]; then
+      rm -rf "${bundle_site:?}/${package}"
+      cp -a "${source_site}/${package}" "${bundle_site}/"
+    fi
+  done
+  if [[ -d "${source_site}/numpy.libs" ]]; then
+    rm -rf "${bundle_site:?}/numpy.libs"
+    cp -a "${source_site}/numpy.libs" "${bundle_site}/"
+  fi
+  for module in typing_extensions.py; do
+    if [[ -f "${source_site}/${module}" ]]; then
+      cp -a "${source_site}/${module}" "${bundle_site}/"
+    fi
+  done
+  for metadata in "${source_site}"/{cattrs,attrs,typing_extensions}-*.dist-info; do
+    if [[ -d "${metadata}" ]]; then
+      cp -a "${metadata}" "${bundle_site}/"
+    fi
+  done
+fi
+
+# Keep historical task cards runnable while the clean native build lives in a
+# separate directory. Preserve a copied-host binary before replacing it.
+legacy_binary="${repo_root}/build_blender_5.2.0/bin/blender"
+if [[ "${legacy_binary}" != "${BLENDER_BUILD_DIR}/bin/blender" ]]; then
+  mkdir -p "$(dirname "${legacy_binary}")"
+  if [[ -e "${legacy_binary}" && ! -L "${legacy_binary}" ]]; then
+    legacy_backup="${legacy_binary}.copied-host"
+    if [[ ! -e "${legacy_backup}" ]]; then
+      mv "${legacy_binary}" "${legacy_backup}"
+    else
+      echo "legacy Blender backup already exists: ${legacy_backup}" >&2
+      exit 3
+    fi
+  fi
+  ln -sfn "../../build_blender_native/bin/blender" "${legacy_binary}"
+fi
+"${BLENDER_BUILD_DIR}/bin/blender" --version | head -3
+printf 'native-build-ok binary=%s\n' "${BLENDER_BUILD_DIR}/bin/blender"