feat: establish reproducible FreeCAD web compatibility baseline

native/camotics-wasm/build.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root=$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)
+source_root="$repo_root/CAMotics/src"
+output_dir="$repo_root/public/vendor/camotics"
+
+test -f "$source_root/camotics/sim/ConicSweep.cpp"
+test -f "$source_root/camotics/sim/SpheroidSweep.cpp"
+command -v em++ >/dev/null
+mkdir -p "$output_dir"
+
+em++ \
+  "$repo_root/native/camotics-wasm/camotics_sweep.cpp" \
+  "$source_root/camotics/sim/Sweep.cpp" \
+  "$source_root/camotics/sim/ConicSweep.cpp" \
+  "$source_root/camotics/sim/SpheroidSweep.cpp" \
+  -I"$repo_root/native/camotics-wasm/include" \
+  -I"$source_root" \
+  -std=c++17 -O3 -flto -fno-exceptions \
+  -sSTANDALONE_WASM=1 \
+  -sERROR_ON_UNDEFINED_SYMBOLS=1 \
+  -sEXPORTED_FUNCTIONS='["_camotics_sweep_abi_version","_camotics_conic_depth","_camotics_spheroid_depth","_camotics_conic_bbox_count"]' \
+  -Wl,--no-entry \
+  -o "$output_dir/camotics-sweep.wasm"