Local patched WASM PPTX exporter

export-pptd.mjs — Node entry (official WASM glue, --no-sign)
Patched WASM canonical path (repo / npm package):
editor/neo-ppt/assets/pptd_wasm_bg-DPPWdROu.wasm
Skill install copies it to scripts/local-export/pptd_wasm_bg.wasm.
Used by ../export_pptx.py as the default export path

# from repo: resolves editor/neo-ppt/assets/… automatically
node export-pptd.mjs /path/to/project -o out.pptx --no-sign

# or pass explicitly
node export-pptd.mjs /path/to/project -o out.pptx --no-sign \
  --wasm ../../../../editor/neo-ppt/assets/pptd_wasm_bg-DPPWdROu.wasm